CN103399672B - Optical touch screen system and felt pen combined system - Google Patents
Optical touch screen system and felt pen combined system Download PDFInfo
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- CN103399672B CN103399672B CN201310185668.3A CN201310185668A CN103399672B CN 103399672 B CN103399672 B CN 103399672B CN 201310185668 A CN201310185668 A CN 201310185668A CN 103399672 B CN103399672 B CN 103399672B
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Abstract
The system of optical touch screen system and felt pen combination relates to touch-screen system field, is specifically related to a kind of optical touch screen systems.Optical touch screen system, including touch pad, signal processing system, also includes that light-sensitive element group, light-sensitive element group include a plurality of light-sensitive element, and a plurality of light-sensitive elements connect signal processing system.Optical touch screen system source, including a light source, the more uniform outer surface that is radiated at of light that light source produces has on the touch pad of transparent medium, and transmission outside touch pad.Contact felt pen, including switch and light-emitting component, the luminous situation of on-off control light-emitting component.Remote touch pen includes laser instrument, power supply, also includes that one is easy to hand-held shell, and described laser instrument, power supply are arranged in the enclosure, are provided with switch between described laser instrument and described power supply, and described switch is arranged on the housing.Capacity of resisting disturbance is strong, be not afraid of greasy dirt, it is adaptable to the occasion that the greasy dirt such as factory floor, mining area is heavier.The conversion between remote touch pattern and contact touch mode can be realized easily.
Description
The filing date of the original application of this divisional application: on August 17th, 2009, Application No.: 2009101663237,
Entitled: optical touch screen and optical touch screen light source and felt pen.
Technical field
The present invention relates to touch-screen system field, be specifically related to a kind of optical touch screen systems.
Background technology
The existing touch-screen system utilizing optical characteristics to make mainly has two kinds, and one is infrared touch panel
System；A kind of touch-screen system being called electronic laser blank being to be mainly used in projector, utilizes and swashs
Light tracking technique surface sweeping touches person's handwriting.
Existing Infrared touch screen systems, is provided with optics including correlation type infrared touch screen system and the back side and receives
The Infrared touch screen systems of element.Infrared touch screen systems, relative to other touch-screen systems, has performance
The series of advantages such as stable, capacity of resisting disturbance is strong, life-span length, precision height.Almost with overwhelming advantage,
Gradually capture the market of other touch-screen systems.
But Infrared touch screen systems still has a fatefulue weakness to be difficult to overcome, it is simply that infrared window is afraid of dirty.
Should not use at uncleanly environment, such as can not apply in the heavier field of the greasy dirt such as factory floor, mining area
Close；Such as can not apply the public arena in the opening such as train Waiting Lounge, extramural cash dispenser.Additionally
Infrared emission pipe to be filled outside screen, has had influence on the compactedness of structure, and on small-sized screen, inconvenience is adopted
With, as inconvenience is used on the screen of mobile phone and palm PC.Additionally Infrared touch screen systems cost is the most relatively
Height, resolution is the most relatively low.
The main uses of electronic laser whiteboard system is to cooperate with projector and uses.Projecting apparatus screen both sides respectively fill
There is the generating laser for scanning projector screen.After electronic laser blank starts, generating laser is sent out
Go out laser scanning projection's instrument screen surface.The photosensitive pen supporting with it has the function of sensing laser, so
When user uses photosensitive pen to operate on electronic whiteboard, generating laser can scan the position of photosensitive pen.
Electronic laser whiteboard system is interacted with computer by the positional information of photosensitive pen.
Electronic laser whiteboard system structure is complex, so cost is the highest, general price is at 3000 yuan
To 7000 yuan.Installation and debugging difficulty, needs professional to carry out its laser scanning part fixed during installation
Position, positions and inaccurate or slightly mobile in using the most easily causes maloperation, and even can cause can not be just
Often using, therefore use occasion is very limited.
Comprehensive existing touch-screen system, as the most not occurring that a kind of sensitive paper is opened, permissible
People is allowed to lie prone the touch-screen system write above.People cannot obtain original write by touch-screen system
Feel and convenient.Existing touch-screen system yet suffers from poor anti jamming capability, resolution is low, be not easy to
The shortcomings such as long-range control.
Summary of the invention
It is an object of the invention to provide a kind of optical touch screen system, the property of touch-screen system can be effectively improved
Energy.
The present invention also aims to provide and the felt pen of optical touch screen system support, described felt pen,
Including contact felt pen and remote touch pen.Contact felt pen, coordinates optical touch screen system to connect
Touch touches.Remote touch pen, coordinates optical touch screen system to realize remote touch.
The present invention is by the following technical solutions for achieving the above object:
Optical touch screen system and felt pen combined system, including optical touch screen system and felt pen, light touches
Screen system includes touch pad, signal processing system, also includes light-sensitive element group, described light-sensitive element group bag
Including a plurality of light-sensitive element, a plurality of light-sensitive elements connect signal processing system, the light in light-sensitive element group
Quick element is connected by light with touch pad；
When using optical touch screen system, presenting a relevant luminous point on a touchpad, light-sensitive element is arrived
From the irradiation of the light of described luminous point, it is reflected as the signal of telecommunication being correlated with.
Presenting a relevant luminous point on a touchpad, light-sensitive element group is by the light from described luminous point
Irradiate, be reflected as the signal of telecommunication being correlated with, the intensity of the described signal of telecommunication and light-sensitive element to described luminous point away from
From relevant；The signal of telecommunication that light-sensitive element produces is sent to signal processing system, and signal processing system is by dividing
Analyse the information including intensity of a plurality of signals of telecommunication that a plurality of light-sensitive element produces, it is thus achieved that described light
Point positional information on a touchpad.
It is also possible that described optical touch screen system includes a plurality of light-sensitive element group, before described light-sensitive element group
Side is provided with a plus lens.By plus lens by light collection to the photosurface of described light-sensitive element group.
Plus lens can be by luminous point clearly as being presented on photosurface, it is also possible to simply passing through of luminous point is converged
Poly-light is radiated on photosurface, it is not necessary to imaging.
After have employed plus lens, the signal of telecommunication that described light-sensitive element group produces, with luminous point relative to institute
The distance stating light-sensitive element group is relevant with angle.Allow to be integrated in less by the light-sensitive element of light-sensitive element group
Space in, can reduce manufacture difficulty, and reduce cost.Additionally introduce light-sensitive element group and light
Angular relationship between point, aids in determining whether the position of luminous point.
The signal of telecommunication that light-sensitive element produces is sent to signal processing system, and signal processing system is by analyzing light
The electrical signal information that quick element group produces, it is thus achieved that described luminous point positional information on a touchpad.At signal
Reason system processes the signal of telecommunication produced in described light-sensitive element group, can process in the signal of telecommunication with distance dependent
Information, it is also possible to process information relevant with angle in the signal of telecommunication, it is also possible to integrated treatment.
Light-sensitive element group can be formed by a plurality of independent light-sensitive element sequential combination, it is also possible to will be multiple
Several light-sensitive elements are integrated on an integrated package, it is also possible to directly use the figure being integrated with a large amount of light-sensitive element
As sensor.
When described luminous point flashes with certain frequency, light-sensitive element is relevant to the optical signal frequency of luminous point by producing
The signal of telecommunication of vibration, the signal of telecommunication of vibration is easy to amplify, frequency-selecting, has more preferable anti-interference, because of
This described luminous point is selected with the luminous point of certain frequency flicker, and signal processing system includes that one dodges with described luminous point
The frequency-selecting module that bright frequency is corresponding.Present on a touchpad can by the luminous point of optical touch screen system identification,
It is considered the luminous point relevant to optical touch screen system.Generally relevant luminous point needs to meet, flicker
Frequency is corresponding with the frequency-selecting module of optical touch screen system, the wavelength of light of luminous point and the reception ripple of light-sensitive element
Long correspondence.
Being not involved with the requirement to touch pad shape in technique scheme, the shape of touch pad is not had
Body limits.Screen owing to currently using is mostly the screen of tetragon, referring to the touch of tetragon
Plate is explained.
Signal processing system in the present invention, can be by comparing luminous point to light-sensitive element in light-sensitive element group
Distance difference relation obtain the position of described luminous point, the difference of distance is received by each light-sensitive element
Difference from the light signal strength of described luminous point is reflected.Touch pad for plane, it is only necessary to two
The light-sensitive element of row's cross arrangement both can determine that the position of luminous point.The light-sensitive element that one row is transversely arranged is logical
Cross the relevant signal of telecommunication difference relationship that each light-sensitive element produces, determine the lateral coordinates of luminous point；One row indulges
To the light-sensitive element of arrangement, the relevant signal of telecommunication difference relationship produced by each light-sensitive element, determine light
The longitudinal coordinate of point, so that it is determined that the position that luminous point is on a touchpad.Described " the light in light-sensitive element group
Quick element is connected by light with touch pad " refer in the light of touch pad, at least Ray Of Light warp
Cross light-sensitive element.Light-sensitive element in light-sensitive element group need not be all connected by light with touch pad, but
At least two light-sensitive elements are connected by light with touch pad.
Signal processing system in the present invention, it is also possible to by the angular relationship between luminous point and light-sensitive element group
Obtain the position of described luminous point.The present invention passes through plus lens by light collection to described light-sensitive element group
On photosurface.The optical signal of described luminous point is converged in light-sensitive element group by angular relationship by plus lens
Position reflected.For the touch pad of plane, two groups of light-sensitive element groups with plus lens are permissible
Determine the position of luminous point.One light-sensitive element group determines polar coordinate relevant with angle, two light
Quick element group determines two interlaced polar coordinate relevant with angle.By including two polar coordinate
The information determined, determines the position of luminous point.
Signal processing system obtains the position of described luminous point by the angular relationship between luminous point and light-sensitive element group
Time, it is also possible to the difference relationship of the light signal strength on light-sensitive element in light-sensitive element group is analyzed,
To improve precision.
Touch pad can select the screen of display, such as screen, the liquid crystal display screen of projecting display
Curtain, negative electrode display tube display (CRT) screen, the screen of light-emitting diode display, projecting apparatus screen；Also
The transparent protective plate in screen front can be selected.
When touch pad is screen, the light-sensitive element in light-sensitive element group can be arranged on screen periphery.Screen is
During the screen of printing opacity, such as the screen of projecting display, owing to the light of luminous point can penetrate screen, light
Light-sensitive element in light-sensitive element group can be arranged on except being arranged in screen front, it is also possible to is arranged in
Screen rear；When screen is the screen that front is transparent medium, transparent medium such as glass, transparent plastics,
The light of luminous point injection can be around transparent medium internal communication to transparent medium, therefore light-sensitive element group
In light-sensitive element except can be arranged in around screen front, it is also possible to be arranged in around light transmission medium edge.
Light-sensitive element group can arrange plus lens, it is also possible to is not provided with.The situation of plus lens is being set
Under, corresponding selection, by the information including the angular relationship between luminous point and light-sensitive element group, obtains
Obtain the signal processing system of described light spot position.In the case of being not provided with plus lens, corresponding selection,
The position of described luminous point is obtained to the distance difference relation of light-sensitive element in light-sensitive element group by comparing luminous point
Signal processing system.The situation that herein below emphasis is not provided with plus lens with light-sensitive element group is attached most importance to
Tell about.
When touch pad is transparent protective plate, the light of luminous point obviously can penetrate protective plate, thus photosensitive
Element group can be arranged on the front of protective plate；Can also be arranged between screen and protective plate, i.e. protect
After plate；Can also be arranged in around protective plate edge.According to above-mentioned design structure, optical touch screen system
System can make polytype optical touch screen system.
The present invention divides according to mode of operation difference, the optical touch screen system that touches including, contact, remotely
The optical touch screen system touched.
One, the optical touch screen system that contact touches
The light source of described luminous point has three kinds of forms, and a kind of form is that optical touch screen system itself does not have light source,
The extraneous device used with the collocation of optical touch screen system has light source, the device of collocation such as contact felt pen,
This light source produces described luminous point；A kind of form is that optical touch screen system itself has optical touch screen system source,
Optical touch screen system source has light source, and this light source is the light source of described luminous point；A kind of form is that light touches
Screen system itself has optical touch screen system source, and extraneous and the collocation of optical touch screen system device also has
Light source, the light source of described luminous point is any one light source therein.
(1) optical touch screen system itself does not have a light source:
Need the extraneous device used with the collocation of optical touch screen system and optical touch screen system with the use of, take
The device joined such as contact felt pen.
Contact felt pen is luminous when contacting with optical touch pad, forms a luminous point, luminous point on a touchpad
Mobile with the movement of contact felt pen, thus realize contact felt pen to light by the luminous point of movement
The touch operation of touch-screen system.
Contact felt pen, it is characterised in that include a shell, power supply, switch and light-emitting component, switch
Control the luminous situation of light-emitting component；Switch is connected with the touch end of contact felt pen, touches end and is touching
Triggering switch when touching touch pad, light-emitting component is luminous, forms luminous point on a touchpad.
The signal generating module producing electric oscillation signal can be accessed between power supply and light-emitting component, make luminous unit
Part produces the optical signal of flicker.
Touch pad Application Range is relatively wide, such as the screen of projecting display, liquid crystal display equipment screen, negative electrode
Display tube display (CRT) screen, the screen of light-emitting diode display, projecting apparatus screen；Can also select
The transparent protective plate in various screen fronts.
When touch pad is screen, in light-sensitive element group, light-sensitive element is arranged in screen periphery.Screen is for having
During the screen of photosensitiveness, such as the screen of projecting display, owing to luminous point can penetrate screen, light-sensitive element
In group, light-sensitive element is except being arranged in screen front, it is also possible to be arranged in screen rear；Screen is front
During for the screen of transparent medium, transparent medium such as glass, transparent plastics, the light of luminous point injection is permissible
At transparent medium internal communication to transparent medium periphery, therefore in light-sensitive element group, light-sensitive element removes and can arrange
Cloth side before screen, it is also possible to be arranged in around transparent medium edge, it is also possible to be embedded in transparent medium
Portion.
When touch pad is transparent protective plate, the light of luminous point obviously can penetrate protective plate, thus photosensitive
Element group can be arranged on the front of protective plate, and is arranged in around protective plate；Screen can also be arranged on
And between protective plate, i.e. after protective plate, it is arranged in around protective plate；Protective plate can also be arranged in
Around edge；It is also embedded within inside transparent medium.
(2) optical touch screen system itself has an optical touch screen system source:
Optical touch screen system also includes an optical touch screen system source, described in there is light source.Touch pad is anterior
For transparent medium, the more uniform outer surface that is radiated at of light that described light source produces has the touch of transparent medium
On plate, and transmission outside touch pad.
Light is derived from the more uniform irradiation in the touch pad back side or side on a touchpad, and outside touch pad relatively
Uniform transmission；Use a touch part contact touch pad, touch the part the irradiating of light by light source, formed
Luminous point.Described touch part refers to touch the object of touch pad, can be finger, pen etc..
Luminous point is with touching the movement of part and mobile, by the movement of luminous point, the presence or absence of luminous point and luminous point
The information realizations such as flicker frequency touch the part touch operation to optical touch screen system.
Touch pad can be selected for the protective plate of screen transparent front, it is also possible to selects screen.If selection screen,
Then needing screen front is transparent medium, as can be selected for liquid crystal display equipment screen, negative electrode display tube display
(CRT) screen.
With protective plate as touch pad:
Being provided with strip-shaped light source in the horizontal side of the close screen side of protective plate, another horizontal side is provided with
The light-sensitive element group of one row's light-sensitive element composition, the light of strip-shaped light source passes through protective plate, and direction of illumination is
Another horizontal side corresponding thereto, and slight oblique protective plate front；Close screen one at protective plate
Longitudinal side of side is provided with strip-shaped light source, and another longitudinal side is provided with the photosensitive unit of row's light-sensitive element composition
Part group, the light of strip-shaped light source passes through protective plate, and direction of illumination is another longitudinal side corresponding thereto,
And slight oblique protective plate front.Because strip-shaped light source is slight oblique protective plate front, so in protection
Can there is the light being in total reflection state in plate, these light are also beneficial to uniform light.
Two row's light-sensitive elements connect one, by comparing luminous point to the range difference of light-sensitive element in light-sensitive element group
Value relation obtains the signal processing system of the position of described luminous point.Above-mentioned two are by row's light-sensitive element group
The light-sensitive element group become, can replace to be provided with the light-sensitive element group of plus lens, and two are provided with convergence thoroughly
The light-sensitive element group of mirror connects through the information including the angular relationship between luminous point and light-sensitive element group,
Obtain the signal processing system of described light spot position.Two light-sensitive element groups being provided with plus lens, it is easy to
It is arranged on the corner of protective plate, can effectively reduce blind area.
Described strip-shaped light source, can be the light source of the strip being arranged in by multiple little sub-light sources, it is also possible to
Luminous body including a strip.
When touching part and touch touch pad, the light that light-sensitive element receives is more weak, on touch pad
Light intensity is more uniform, there is not luminous point；When touching touch pad with touch part, light is touching
Luminous point is formed in template.Luminous point moves with the movement touching part, thus by the movement of luminous point, luminous point
The information such as presence or absence, it is achieved touch the part touch operation to optical touch screen system.
Touch part is formed when contacting with touch pad luminous point principle illustrate, and proof is provided:
Touch part from touch pad farther out time, touch pad in the light appeared, only a small amount of light is radiated at tactile
Touch on part, only have the most again small part light to be reflected back touch pad again, and the light being reflected back is not concentrated,
Can not form luminous point, optical touch screen system is not responding to.Touch light when part contacts with touch pad can not penetrate
Touch pad, is directly touching part and touch pad contact position formation luminous point.The present invention is by comparing luminous point to light
In quick element group, the distance of each light-sensitive element obtains the position of described luminous point, even if the area of luminous point is relatively big also
Do not affect the determination to its position of the optical touch screen system.
Correctness with a simple experimental test above-mentioned principle of proof: dark night, at light
The things of the most invisible outside surface of glass window in the room that line is brighter, the glass of windowpane is as minute surface.
Assume there is a people outside glass window, he from windowpane farther out time, even if the light that windowpane appears can
Being irradiated to this people, we cannot see him, and it is little that this proves that the light of windowpane injection reflects.
When nose is pressed on glass by he, we can be appreciated that his nose is the brightest, forms a luminous point, face
Other position with glasses interval from increase the most dimmed.
Above-mentioned simple experimental test is contrasted with the present invention: make strip-shaped light source produce and have one
Determining the optical signal of flicker frequency, the frequency-selecting module of signal processing system is only chosen and strip-shaped light source flicker frequency
The relevant signal of telecommunication, i.e. optical touch screen system only identifies the light that strip-shaped light source produces, and touches relative to light
Screen system, the outside of touch pad is dark, is all consistent with the condition in above-mentioned experimental test.
Therefore can be to touch part analogy nose, the glass of touch pad analogy windowpane, light-sensitive element analogy eyes,
This proves to touch when part touches touch pad and can form a luminous point.
Plural number bar strip-shaped light source, simultaneously during injection light, the light of touch pad injection is difficult to uniformly, and having can
The determination to light spot position can be had influence on.
Can so solve light and be difficult to uniform problem, the optical signal of a strip-shaped light source injection, by with
The light-sensitive element of correspondence be converted into the corresponding signal of telecommunication and be sent to signal processing system, signal processing system
Using this corresponding signal of telecommunication as obtaining described luminous point location dependent information on a touchpad.With other
The optical signal that this strip-shaped light source penetrates can not be sent to signal processing by the light-sensitive element that shape light source is corresponding
System, or the light letter that this strip-shaped light source can be penetrated by the light-sensitive element corresponding with other strip-shaped light sources
Number it is sent to signal processing system, but signal processing system is not described as obtaining using this corresponding signal of telecommunication
Luminous point location dependent information on a touchpad.
Specifically can solve light in the following way and be difficult to uniform problem: described plural number bar strip-shaped light source is handed over
For lighting, when wherein a strip-shaped light source is not lighted, the telecommunications of corresponding light-sensitive element group output
Number do not received.Article one, during strip light source igniting, the signal of telecommunication quilt of corresponding light-sensitive element group output
Signal processing system receives and processes.What the most each light-sensitive element group received is that a strip-shaped light source is penetrated
The light gone out, and the light of a strip-shaped light source injection is easy to be projected on a touchpad uniformly.
Specifically can also solve light in the following way and be difficult to uniform problem: plural number bar strip-shaped light source,
It is provided with light-sensitive element to deserved with each strip-shaped light source；Each strip-shaped light source is respectively provided with the flicker frequency that difference is bigger
Rate；The each light-sensitive element corresponding with each strip-shaped light source connects corresponding with this strip-shaped light source flicker frequency respectively
Frequency-selecting module.
(3) optical touch screen system itself has light source, and extraneous and the collocation of optical touch screen system device also has
There is a light source:
Optical touch screen system to be realized itself has light source, and the extraneous device arranged in pairs or groups with optical touch screen system is also
There is the situation of light source, as long as being equipped with and optical touch screen system to the optical touch screen system itself with light source
The device with light source that collocation uses, can have both of which simultaneously.Close optical touch screen system originally
The light source of body, optical touch screen system is the pattern that optical touch screen system itself does not have light source；Open light to touch
Touching the light source of screen system itself, optical touch screen system is the pattern that optical touch screen system itself has light source.
Two, the optical touch screen system of remote touch
Need the device that uses with the collocation of the optical touch screen system of remote touch with the use of.Collocation uses
Device, such as remote touch pen.
Remote touch pen includes laser instrument, power supply, also includes that one is easy to hand-held shell, described laser instrument,
Power supply is arranged in the enclosure, is provided with switch between described laser instrument and described power supply, and described switch is arranged on institute
State on shell.
Further, remote touch pen also includes a signal generating module, and power supply connects signal generating module,
Signal generating module connecting laser, signal generating module produces the signal of telecommunication of vibration, and drives laser instrument
Send the laser signal of the flicker corresponding with the signal of telecommunication.
Remote touch pen produces light beam, and this light beam forms a luminous point on a touchpad.Remote touch pen is led to
Process control luminous point too far, realizes corresponding remotely operation to optical touch screen system.
The optical touch screen system that the optical touch screen System Working Principle of remote touch and structure touch with contact
The form itself not having light source is essentially identical, and difference focuses on remote touch pen and can produce a light intensity
Stronger light beam, from touch pad farther out time, luminous point can be formed on a touchpad.Therefore by by remote
Journey felt pen is replaced by contact felt pen, can be by system converting for the optical touch screen of remote touch for contact
The optical touch screen system that formula touches, vice versa.The optical touch screen system of remote touch touches with contact
Optical touch screen system between can convert easily.
In the light-sensitive element group of remote touch, the setting of light-sensitive element is more free, can be arranged on screen
The front of curtain, it is also possible to be arranged on the front of protective plate.
Remote touch pen and contact felt pen, can be by the optical signal of flicker and optical touch screen system
Communicate, one coding lock system is set to optical touch screen system, to contact felt pen and remote touch
The signal generating module of pen arranges a supporting electron key system.Optical touch screen service system is realized lock
Fixed, prevent irrelevant personnel from operating.
As shown in the above, heretofore described optical touch screen system, do not touch with light during use
Touch the electronic device contact of screen system itself, so service life is long.Touch pad uses display original
Parts, are not take up space.Not only achieve remote touch, it is also possible to realize remote touch pattern easily
And the conversion between contact touch mode.The determination of the position of luminous point is the most relevant with the position of luminous point, with light
Put on the power of light intensity, touch pad unrelated with or without greasy dirt.So capacity of resisting disturbance is strong, be not afraid of greasy dirt, suitable
For the occasion that the greasy dirt such as factory floor, mining area is heavier.The optical touch screen system of remote touch and contact
Can convert easily between the optical touch screen system touched, and be easy to encryption.Allow existence many
Individual luminous point, it is possible to achieve multi-touch function.
Accompanying drawing explanation
In Fig. 1, a is contact felt pen overall diagram, and b is contact felt pen electrical schematic diagram；
In Fig. 2, a is remote touch pen overall diagram, and b is remote touch pen electrical schematic diagram；
Fig. 3 is front view and the lateral plan of the remote touch pen of the fixed structure with a ring shape；
Fig. 4 is the lateral plan of the remote touch pen of the fixed structure with two ring shape；
Fig. 5 is the touch pad structure chart being provided with two row's light-sensitive elements in specific embodiment one；
Fig. 6 is light-filtering channels structure chart；
In Fig. 7, a is light-sensitive element and signal processing system annexation schematic diagram, and b touches for improve light
The light-sensitive element of screen system resolution and signal processing system annexation schematic diagram；
In Fig. 8, a is that lateral coordinates region divides schematic diagram, and b is to improve optical touch screen systemic resolution
Lateral coordinates region divides schematic diagram；
Fig. 9 is the schematic diagram of the coordinates regional of the square block that lateral coordinates region is surrendered with longitudinal coordinate region；
Figure 10 is the structural representation that light source is arranged on the touch pad back side；
Figure 11 is the structural representation that light source is arranged on touch pad side；
Figure 12 be touch pad area bigger time light-sensitive element arrangement schematic diagram；
When Figure 13 is the screen that touch pad is the large screen back projection formula display being spliced to form by multiple the small screen
Light-sensitive element arrangement schematic diagram；
Figure 14 is touch pad photosensitive arrangement of elements schematic diagram when being the screen of light-emitting diode display；
Figure 15 uses front to divide schematic diagram equipped with the coordinates regional of the light-sensitive element group of plus lens.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be readily apparent from
Solve, below in conjunction with being specifically illustrating, the present invention is expanded on further.
Optical touch screen system and felt pen combined system, including optical touch screen system and felt pen, light touches
Screen system includes touch pad, signal processing system, also includes light-sensitive element group, described light-sensitive element group bag
Including a plurality of light-sensitive element, a plurality of light-sensitive elements connect signal processing system, the light in light-sensitive element group
Quick element is connected by light with touch pad；When using optical touch screen system, present a phase on a touchpad
The luminous point closed, light-sensitive element, by irradiating from the light of described luminous point, is reflected as the signal of telecommunication being correlated with.
Described felt pen, including at least one in contact felt pen and remote touch pen.
Felt pen presents a relevant luminous point on a touchpad, and light-sensitive element group is by from described luminous point
The irradiation of light, is reflected as the signal of telecommunication being correlated with, and the intensity of the described signal of telecommunication and light-sensitive element are to described light
The distance dependent of point；The signal of telecommunication that light-sensitive element produces is sent to signal processing system, signal processing system
By analyzing the information including intensity of a plurality of signals of telecommunication that a plurality of light-sensitive elements produce, it is thus achieved that
Described luminous point positional information on a touchpad.
It is also possible that described optical touch screen system includes a plurality of light-sensitive element group, before described light-sensitive element group
Side is provided with a plus lens.By plus lens by light collection to the photosurface of described light-sensitive element group.
Plus lens can be by luminous point clearly as being presented on photosurface, it is also possible to simply passing through of luminous point is converged
Poly-light is radiated on photosurface, it is not necessary to imaging.
After have employed plus lens, the signal of telecommunication that described light-sensitive element group produces, with luminous point relative to institute
The distance stating light-sensitive element group is relevant with angle.Allow to be integrated in less by the light-sensitive element of light-sensitive element group
Space in, can reduce manufacture difficulty, and reduce cost.Additionally introduce light-sensitive element group and light
Angular relationship between point, aids in determining whether the position of luminous point.
The signal of telecommunication that light-sensitive element produces is sent to signal processing system, and signal processing system is by analyzing light
The electrical signal information that quick element group produces, it is thus achieved that described luminous point positional information on a touchpad.At signal
Reason system processes the signal of telecommunication produced in described light-sensitive element group, can process in the signal of telecommunication with distance dependent
Information, it is also possible to process information relevant with angle in the signal of telecommunication, it is also possible to integrated treatment.
Light-sensitive element group can be formed by a plurality of independent light-sensitive element sequential combination, it is also possible to will be multiple
Several light-sensitive elements are integrated on an integrated package, it is also possible to directly use the figure being integrated with a large amount of light-sensitive element
As sensor.
When described luminous point flashes with certain frequency, light-sensitive element is relevant to the optical signal frequency of luminous point by producing
The signal of telecommunication of vibration, the signal of telecommunication of vibration is easy to amplify, frequency-selecting, has more preferable anti-interference, because of
This described luminous point is selected with the luminous point of certain frequency flicker, and signal processing system includes that one dodges with described luminous point
The frequency-selecting module that bright frequency is corresponding.Present on a touchpad can by the luminous point of optical touch screen system identification,
It is considered the luminous point relevant to optical touch screen system.Generally relevant luminous point needs to meet, flicker
Frequency is corresponding with the frequency-selecting module of optical touch screen system, the wavelength of light of luminous point and the reception ripple of light-sensitive element
Long correspondence.
The optical touch screen system touched due to contact and the operation principle of the optical touch screen system of remote touch
And structure is essentially identical, difference focuses on the generation type of described luminous point, forms the mode of luminous point
Form luminous point including by contact felt pen, formed luminous point by remote touch pen, by touching part shape
Becoming luminous point, described touch part is the object touching touch-screen system, and this object can not be luminous, Ke Yishi
Finger, pen etc..
Select contact felt pen or described touch part to use with optical touch screen system support, or select remote
Journey felt pen uses with optical touch screen system support, largely can directly determine this optical touch screen system
System is optical touch screen system or the optical touch screen system of remote touch of contact touch.
Contact felt pen, remote touch pen concrete structure as described below.
With reference to a and b in Fig. 1, contact felt pen, including a shell 101, power supply 102, switch 103
With light-emitting component 104, the signal generating module 105 of the signal of telecommunication that light-emitting component 104 is vibrated by generation is even
Connect power supply 102, the luminous situation of switch 103 control light-emitting component 104.Described light-emitting component 104 is permissible
It is the light-emitting component launching visible ray, it is also possible to be the light-emitting component launching black light.Power supply 102 is also
Can be directly by switch 103 connection light-emitting component 104.
Light-emitting component 104 uses light emitting diode, light emitting diode to be positioned at connecing of a shell 101 and touch pad
Contravention, light emitting diode upper end props up the button of switch 103.
When using contact felt pen, light emitting diode touches touch pad, and light emitting diode is under pressure triggering
The button of switch 103, light-emitting component is luminous, forms luminous point on a touchpad.This luminous point occurs with signal
Module 105 and switch 103 corresponding frequency scintillations.Switch 103 obviously can also is that pressure transducer shape
The switch of formula, or the known switch of some other small size.
Contact felt pen can also set up modifier key, such as button 106.Signal generating module 105 is provided with
The frequency corresponding with button 106.Pushing button 106, light emitting diode touches touch pad ON switch 103
Time light-emitting component 104 with the frequency scintillation corresponding with button 106.Optical touch screen system can be to this frequency
The optical response signal of rate flicker is for clicking on functions of mouse right key.In like manner, it is also possible to arrange corresponding to mouse left
The button of key.
Contact felt pen obviously can be integrated with the radio function of existing laser pen, infrared function,
As clicked on left mouse button function by radio function, infrared functional realiey, click on functions of mouse right key and unreal
Lamp sheet page-turning function.
The power supply 102 of contact felt pen can be charge power supply.Shell 101 is provided with charging inlet,
It is easy to the charging of contact felt pen.
Mobile phone, palm PC, palm such as it is applied to when contact felt pen is applied to portable electric appts
When game machine, notebook computer etc., portable electric appts is provided with contact felt pen slot, contact
Charging electrode it is provided with in felt pen slot, time in contact felt pen insertion contact felt pen slot, institute
State charging inlet to dock with charging electrode, charge power supply is charged.
Remote touch pen is used for producing light beam, and this light beam forms luminous point on a touchpad.Remote touch pen is led to
Process control luminous point too far, realizes corresponding remotely operation to optical touch screen system.With reference to a and b in Fig. 2,
Remote touch pen includes laser instrument 201, power supply 202, shell 203, and shell 203 has switch sections
204, tool power supply 202 in shell 203, power supply 202 connects signal generating module 205, signal generation mould
Block 205 connecting laser 201, signal generating module 205 produces the signal of telecommunication of vibration, and drives laser instrument
201 laser signals sending the flicker corresponding with the signal of telecommunication, and then in optical touch screen system, form flicker
Luminous point.Laser instrument 201 can be the laser instrument launching visible ray, it is also possible to be to launch black light
Laser instrument.
Switch sections 204 is provided with multiple button, and each button produces not corresponding to signal generating module 205
Same signal, therefore remote touch pen can produce the multiple laser signal with different information.Remote touch
The power supply of pen can be charge power supply.
Another structure of remote touch pen, with reference to Fig. 3, laser instrument has two 301,302, laser instrument
301 launch visible ray, and infrared ray launched by laser instrument 302, the light that two laser instrument 301,302 send
Parallel.Luminous ray is behaved provides visual feedback, and Infrared has relatively visible ray more as signal vehicle
Good anti-interference.
Signal generating module can produce the multiple signal of telecommunication, is connected with switch key, and switch has three
Button, each button is corresponding with a kind of signal of telecommunication.Every kind of signal of telecommunication drives laser instrument to produce corresponding laser
Signal.
There is on the shell 300 of felt pen the fixed structure 304 of ring shape.Can be by by fixed structure 304
Felt pen is fixed on finger, produces the luminous point following finger movement.Felt pen can be worn over right hand food
On finger, control button 303 with thumb.Because people's ordinary practice uses right hand forefinger refer to thing and make a gesture.
The forefinger of the right hand has good sense of direction, is the most all utilizing this point in the design of pistol.
Yet another structure of remote touch pen, with reference to Fig. 4, more comfortable in order to allow people use, outside
Changing as follows on shell, shell is provided with the fixed structure 401,402 of two ring shape, fixes for two
Connected by wire 403 between structure 401,402, ultrared sharp equipped with launching on fixed structure 401
Light device, another fixed structure 402 amplifies equipped with switch 404, power supply, signal generating module, signal
Module.
Equipped with the fixed structure 401 of laser instrument during use, it is worn on forefinger, equipped with the fixed structure of switch
402 are worn on middle finger, and the direction of illumination of laser instrument is towards finger tip, and the button of switch 404 is towards thumb.With
The button of thumb control switches 404, laser instrument is to the direction injection laser that forefinger points to.The action of forefinger
Drive laser action, and then handle the action of luminous point.
Remote touch pen obviously can also be integrated with the radio function of existing laser pen, infrared function,
As clicked on left mouse button function by radio function, infrared functional realiey, click on functions of mouse right key and unreal
Lamp sheet page-turning function.
For the present invention, the simple generation type according to luminous point, optical touch screen system is divided into contact
The optical touch screen system touched and the optical touch screen system of remote touch, it is simple to brief description, but be not easy to
Explain in detail.Touch pad selected by Main Basis is dissimilar below, and described light-sensitive element exists
Allocation method on touch pad carries out classifying explanation in detail.
Time in the present invention with protective plate for touch pad, the mounting means of described light-sensitive element has higher
Freedom, the producing method of luminous point also has the highest freedom, first with protective plate as touch pad
It is illustrated.Additionally at architecture basics and the principle base of the optical touch screen system with protective plate as touch pad
On plinth, the optical touch screen system with other objects as touch pad can be obtained easily.With other objects it is
The optical touch screen system of touch pad, is carried out subsequently based on the protective plate optical touch screen system as touch pad
Illustrate.
Specific embodiment one, with the protective plate of printing opacity before screen as touch pad:
Herein below emphasis is not provided with the situation of plus lens with light-sensitive element group and attaches most importance to and tell about.Right
In replacing to be provided with the situation of the light-sensitive element group of plus lens, before told about, the most excessively
Explanation in detail.
Light-sensitive element group is arranged on around touch pad.Around touch pad, including the front touched on edges of boards,
Rear and side.Concrete, with reference to Fig. 5, touch pad 501 be arranged over the light that a row is transversely arranged
The light-sensitive element group 502 of quick element composition, left is provided with the photosensitive of the light-sensitive element composition of row's longitudinal arrangement
Element group 503.Light-sensitive element group 502, light-sensitive element group 503 can be arranged on touch pad 501 front,
Touch pad 501 rear can be arranged on, it is also possible to be embedded in touch pad 501 in advance internal.
Light-sensitive element is the light-sensitive element that applicable wavelengths scope is narrower, utilizes light-sensitive element itself to optical signal
The selectivity of wavelength, eliminates the interference of other wavelength channels.As can be selected for uv-sensitive component, infrared
Light-sensitive element.
In the present embodiment, described light-sensitive element group 502, light-sensitive element group 503 use infrared optical sensor,
As can be selected for infrared light sensitive diode, infrared phototriode, light-sensitive element integrated package, or image passes
Sensor.
On light-sensitive element group 502, light-sensitive element group 503 radiator grille, filter glass can also be the most effective
Ground eliminates the interference of other wavelength channels.With reference to Fig. 6, light-sensitive element group is also provided with shading knot
Structure, described light-shielding structure is for blocking the light that irrelevant direction is penetrated.Described irrelevant direction, refers to
Control unrelated direction with optical touch screen system, generally refer to except the direction in addition to touch pad.
For this purpose, light-shielding structure can with flexible design, can be simply be positioned at above light-sensitive element or
The brake sack of lower section, it is also possible to be more complicated structure.
Such as, light-shielding structure uses light-filtering channels 600 to more complicated structure, by printing opacity in light-sensitive element group upper cover
Property difference the light-filtering channels 600 made of material, be used for filtering the light of directive light-sensitive element beyond touch pad 501
Line.As light-filtering channels can be made with opaque plastic material.It is provided with elongated on light-filtering channels 600
Light-transmitting opening 601, light-sensitive element group 502 is arranged in the position having certain distance away from light-transmitting opening 601.
Light-transmitting opening 601 is slightly towards touch pad 501.Light-transmitting opening 601 direction and the folder of touch pad 501
Angle reduces with the increase of the touch pad 501 width on light-transmitting opening 601 direction, in order to Ke Yijie
Receive the optical signal on the most whole touch pad of optical signal 501 of area the biggest on touch pad 501.
Light on touch pad 501 arrives light-sensitive element group 502 through light-transmitting opening 601.Beyond touch pad 501
Major part light is blocked by light-filtering channels 600.Filter glass may be mounted in light-transmitting opening 601.
With reference to Fig. 5, utilize the photosensitive unit being contained in the transversely arranged light-sensitive element composition of the row above touch pad
Part group 502, determines the abscissa of luminous point；Utilize the photosensitive unit of the row's longitudinal arrangement being contained in touch pad left
The light-sensitive element group 503 of part composition, determines the vertical coordinate of luminous point, and then by two row's light-sensitive elements to touch
On plate, the position of luminous point is determined.
The one row's light-sensitive element determination method to the wherein one-dimensional coordinate of luminous point, with transversely arranged photosensitive unit
It is described as follows as a example by part group 502:
With reference to a in Fig. 7, to the light-sensitive element serial number of transversely arranged light-sensitive element group 502 it is,
Light-sensitive element 000,001,010,011,100, connects 700,5 frequency-selecting modules of frequency-selecting module respectively
The outfan of 700 connects seeks difference module 701, asks difference module 701 to include 4 operational amplifiers 702, right
The signal of telecommunication of 5 frequency-selecting module 700 outputs asks poor the most two-by-two.
Operational amplifier 702 outfan connects microprocessor system 703, microprocessor system 703
According to the difference of each operational amplifier 702 output signal, be converted to the digital signal of correspondence.
Microprocessor system 703 is subject to the light-sensitive element connected on the left of each operational amplifier 702
The signal of telecommunication produced when light intensity is stronger is " 1 ", otherwise is " 0 ", and by the precedence number of permutations from left to right
According to.And then the region at luminous point place is divided into coordinates regional as shown in a in Fig. 8 1111,0111,
0011、0001、0000。
The raising of optical touch screen systemic resolution obviously can be achieved by increasing light-sensitive element quantity.
With reference to the figure b in Fig. 7, the raising of optical touch screen systemic resolution, it is also possible to by increasing operational amplifier
The quantity of 702, the signal of telecommunication again produced alternate light-sensitive element group 502 asks poor, with to coordinate
Region is segmented further, reaches to put forward high-resolution effect.To the coordinates regional 1111 shown in a in Fig. 8,
0111,0011,0001,0000, it is further subdivided into the coordinates regional shown in b in Fig. 8, from left to right
Be followed successively by 11111,11110,01111,01110,00111,00110,00011,00010,00001,
00000。
Improve optical touch screen systemic resolution, it is also possible to by the electrical signal intensity that each light-sensitive element is produced
Carry out A/D conversion, be compared to each other after being converted into digital information and be achieved.Its principle with above by collection
The principle becoming amplifier to realize is similar, and difference is that one is to be compared by hardware, and one is logical
Cross software to compare.
Photosensitive unit with reference to Fig. 9, the region that transversely arranged light-sensitive element group 502 marks off and longitudinal arrangement
The region that part group 503 marks off, intersects to form the coordinates regional of square block, the coordinate district of each square block
Territory represents different digital information.When luminous point is positioned at the coordinates regional of a square block, optical touch screen system
Reflect the digital information that the coordinates regional of this square block represents, obtain the position of luminous point.
Said method is limited by hardware facility, and resolution easily reaches the limit.With reference to b in Fig. 8,
Illustrate that one utilizes analog quantity to put forward high-resolution method.
Utilize analog quantity to put forward high-resolution method based on the hardware device shown in b in Fig. 8, pass through software
Improve resolution.
Software is utilized to put forward high-resolution method, based on the idea that luminous point moves on touch pad 501
Time, its light intensity smooth change is if luminous point is when crossing over coordinates regional 11110, right with coordinates regional 11110
Transversely arranged two light-sensitive element answered, the light intensity difference reflected is changed to β, then laterally
When crossing over the coordinates regional 01111 adjacent with coordinates regional 11110, the horizontal stroke corresponding with coordinates regional 01111
To two light-sensitive elements of arrangement, the light intensity difference reflected is changed to Ф, Ф=β+Δ, if Δ
Negligible.
Set multiplication constant on an axis of abscissas as n, a length of l of abscissa of a coordinates regional.
When luminous point is positioned at coordinates regional 01111, with the luminous point light intensity when crossing over coordinates regional 11110
Difference change β is reference.In coordinates regional 01111 corresponding with coordinates regional 01111 transversely arranged
Two light-sensitive elements, the light intensity reflected often changesIt is considered as luminous point to move on the horizontal scaleBy
Negligible in Δ, coordinates regional 01111 can be divided into n part by said method, will 01111
Abscissa on resolution increase n times.When luminous point is by coordinates regional 01111, enter adjacent coordinate district
Territory, such as coordinates regional 01110, coordinates regional 00111, then with luminous point when crossing over coordinates regional 01111
Light intensity difference change Ф be reference.Assume again that the multiplication constant on axis of ordinates is also n, the most whole
The resolution of optical touch screen system will rise to original n2Times.
It is summarized as: described optical touch screen system includes row's light-sensitive element, described row's light-sensitive element foundation
Its position relationship, is divided into a plurality of coordinates regional by touch pad；Luminous point described in signal processing system record
Move to the light intensity difference that opposite side causes from a former coordinates regional side and be set to β；Luminous point moves to
During adjacent coordinates region, adjacent coordinates zonal ray Strength Changes situation is compared with β, and according to
Adjacent coordinates peak width and former coordinates regional wide association, determine luminous point position on adjacent coordinates region
Put.
Carry out measurement and the calculating of above-mentioned light intensity difference, can be by first light intensity difference being led to
Cross A/D and be converted into digital information, microprocessor system pass through software to digital information according to upper
State formula and method processes.
With reference to Figure 15, for the light-sensitive element being made up of rows of light-sensitive element shown in Fig. 8 and Fig. 9
Group 502 and light-sensitive element group 503, can two with front equipped with plus lens 510, plus lens 520
Light-sensitive element group 502 and light-sensitive element group 503 replace.Signal processing system, passes through deserved employing
Angular relationship between luminous point and light-sensitive element group 502 and light-sensitive element group 503 obtains the letter of the position of luminous point
Number processing system.The two kinds of signal processing systems mentioned in the present invention, can include photosensitive by judgement
The strength information of the signal of telecommunication relevant to luminous point that a plurality of light-sensitive elements in element group produce is at interior letter
Breath, determines the position of luminous point.Determine that the strongest one or several of the associated electrical signals intensity of generation are photosensitive
Element, determines that the key of light spot position.The most above-mentioned summary utilizing software to put forward high-resolution method
Conclusion, is equally applicable to, and is obtained the position of luminous point by the angular relationship between luminous point and light-sensitive element group
Signal processing system.Signal processing system is by luminous point and light-sensitive element group 502 and light-sensitive element group 503
Between angular relationship when obtaining the position of luminous point, stronger to the optical signal on light-sensitive element in light-sensitive element group
The difference relationship of degree is analyzed, and is favorably improved precision.Signal processing system time specifically used, will ginseng
Examine coordinate and be modified to polar coordinate, then by corresponding coordinate figure in microprocessor system with relevant information
Carry out correspondence, i.e. available required signal processing system.The most no longer describe in detail.
Remote touch pen can be selected, it is also possible to select contact felt pen during use.For in the present invention
The difference of two kinds of felt pens, it is preferred that emphasis is the producing method of luminous point is different.
When using contact felt pen, if touch pad 501 keeps flat on the table, only contact felt pen
The tip of the brushstyle of a writing or painting just can produce response when contacting with touch pad 501.This effect and the effect write on paper
Quite.
Following design makes the present embodiment realize operating with non-luminous touch part:
The present embodiment operates according to non-luminous touch part, then needs to increase a set of optical touch screen
System source.The light source of optical touch screen system source can be more uniform from touch pad 501 back side or side
It is radiated on touch pad 501.The light that light source produces is more uniform from the injection of touch pad 501 front.
Use a touch part contact touch pad 501, irradiating of the light that touch part is produced by light source, formed
Luminous point.Touching part is the object touching touch pad 501, can be finger, pen etc..
Luminous point moves with the movement touching part, by the movement of luminous point, the presence or absence of luminous point, and luminous point
The information realization such as flicker frequency touch the part touch operation to optical touch screen system.
Touch pad 501 back side can be arranged on reference to Figure 10, light source 101a；With reference to Figure 11, light source 101b
Touch pad 501 side can also be arranged on.
It is two strip-shaped light sources with reference to Figure 10, light source 101a, described strip-shaped light source, a rule can be included
The luminous body of shape, it is also possible to be the light source of the strip being arranged in by multiple little sub-light sources.It is arranged on touch
Plate 501 back side, direction of illumination is slightly towards touch pad 501 front.Light-sensitive element group 502, photosensitive unit
Part group 503 is arranged on touch pad 501 back side, and photosurface is slightly towards touch pad 501 front.The most not
Light-sensitive element group 502 to be made, light-sensitive element group 503 photosurface by the direct irradiation of light source 101a.
It is two strip-shaped light sources with reference to Figure 11, light source 101b, described strip-shaped light source, a rule can be included
The luminous body of shape, it is also possible to be the light source of the strip being arranged in by multiple little sub-light sources.It is arranged on touch
Plate 501 side, is embedded in protective plate (touch pad 501) internal, and direction of illumination is slightly towards touch pad
501 fronts.Light-sensitive element group 503, light-sensitive element group 502 (not shown in Figure 11) are arranged on touch pad
Side, is embedded in protective plate (touch pad 501) internal, and photosurface is oriented slightly towards touch pad 501
Front.Try not to make light-sensitive element group 502, light-sensitive element group 503 photosurface by light source 101b
Direct irradiation.
Two strip-shaped light sources in Figure 10 and Figure 11, simultaneously during injection light, touch pad 501 penetrates
Light be difficult to uniformly, influence whether the determination to light spot position.
Solving light in the following way and be difficult to uniform problem, two strip-shaped light sources are alternately lighted, one
During shape light source igniting, the signal of telecommunication of corresponding row's light-sensitive element output is not received.The most often arrange
What light-sensitive element received is all the light of simply corresponding strip-shaped light source injection, and a strip-shaped light source injection
Light be easy to be projected on a touchpad uniformly, thus solve the problems referred to above.
Can also solve light in the following way and be difficult to uniform problem, two strip-shaped light sources select respectively
Differing bigger flicker frequency, corresponding two row's light-sensitive elements connect and the sudden strain of a muscle of each bar strip-shaped light source respectively
The frequency-selecting module that bright frequency is corresponding, thus solve the problems referred to above.
With reference to Figure 10 and Figure 11, when touching part and touch pad 501 not being touched, light source 101a
Or the light that light source 101b produces only has little partial illumination to light-sensitive element group 502 and light-sensitive element group
503.Owing to being formed without luminous point, the light that light-sensitive element group 502 and light-sensitive element group 503 receive is equal
Even, operational amplifier can not compare the obvious difference of the light that each light-sensitive element receives, and reacts for not having
There is generation touch event.
When touching part and touch pad 501 being touched, touch pad 501 produces luminous point, light source 101a
Or the light that light source 101b produces is reflected back, there is diffuse-reflectance in light in reflection, is irradiated to photosensitive
Element group 502 and light-sensitive element group 503.The light that each light-sensitive element receives is uneven, operational amplifier
By the difference of the relatively light that each light-sensitive element receives, reflect corresponding touch event.
The problem that the protective plate that following design solution the present embodiment employing area is bigger is potential when being touch pad:
With reference to Figure 12, when touch pad 501 area is bigger, light-sensitive element group may not well receive
It is positioned on touch pad 501 signal of luminous point everywhere.For solving the problems referred to above, use described in Figure 12
Design, by touch pad 501 surrounding fill light-sensitive element, one piece of touch pad 501 is divided into four pieces
Sub-touch pad 12a, 12b, 12c, 12d.By compiling the light-sensitive element group on four pieces of sub-touch pads is unified
Four pieces of sub-touch pads are combined by code, thus sensitivity are improved.
The following security of system problem being designed for solving the present embodiment:
With reference to Fig. 1 b, Fig. 2, Fig. 3, Fig. 4, contact felt pen and remote touch pen all can arrange letter
Number there is module, and the signal of telecommunication that signal generating module produces is converted into optical signal sends optical touch screen to
System.One coding lock system is set to optical touch screen system, to contact felt pen and remote touch pen
Signal generating module arranges a supporting electron key system.Make the most supporting contact felt pen with remote
Journey felt pen could operate optical touch screen system, beneficially security of system.
In order to increase the versatility of contact felt pen and remote touch pen, i.e. in order to make a contact touch
Touch pen or remote touch pen can operate multiple optical touch screen system, signal generating module can be made to comprise many
Group unlocking information.Contact felt pen or remote touch pen, send the light letter carrying many group unlocking information
Number to optical touch screen system, one of which unlocking information meets the unlocking requirements of optical touch screen system can be complete
Become to unlock.
Described one group of unlocking information can be included in the digital information in carrier wave, it is also possible to is with specific frequency
The signal of rate vibration.
Contact felt pen and remote touch pen constantly send to optical touch screen system in use and carry
The optical signals organizing unlocking information, produce luminous point more.Optical touch screen system is to carry many group unlocking information
The luminous point that optical signal produces is relevant luminous point.
In order to easy to use, many groups unlocking information that signal generating module comprises should be easy to user voluntarily
Update.Therefore signal generating module should be provided with the function that can in good time edit unlocking information, and this function can be led to
Cross and signal generating module is connected realization with a flash memory communication.
Specific embodiment two, with the screen of projecting display as touch pad:
Referring to figs. 1 through Fig. 9, optical touch screen system with the screen of projecting display for touch pad 501 with
Protective plate is that touch pad 501, structure and principle are essentially identical.
One of different, if the screen of projecting display is not transparent medium, then light can not be at back projection type
The inside screen ordered propagation of display, so being not easy to realize operating with non-luminous touch part.
The two of difference, the screen of projecting display is generally large, for ensureing the optical signal of injection at luminous point
Can be received smoothly, needed design further.
The screen of existing large screen back projection formula display is typically spliced to form by multiple the small screen.With reference to figure
13, the screen (touch pad 501) of large screen back projection formula display by 4 the small screen 13a, 13b, 13c,
13d is spliced to form.Regarding the small screen 13a, 13b, 13c, 13d as sub-touch pad, every sub-touch pad is equal
Use structure as shown in figure 12, every sub-touch pad is again divided into 4 little sub-touch pads, from
And touch pad 501 is divided into 16 sub-touch pads.
Light-sensitive element is arranged on the back side of the screen (touch pad 501) of large screen back projection formula display, with
Exempt to affect visual effect.
Specific embodiment three, with liquid crystal display equipment screen or negative electrode display tube display (CRT) screen be tactile
Template:
Referring to figs. 1 through Fig. 9, and Figure 11 and Figure 12, optical touch screen system with liquid crystal display equipment screen is
Touch pad 501 or be touch pad 501 with negative electrode display tube display (CRT) screen, with protective plate be
Touch pad 501, structure and principle are essentially identical.
Difference: liquid crystal display equipment screen and negative electrode display tube display (CRT) screen are relative to protection
The difference of plate, before and after being liquid crystal display equipment screen and negative electrode display tube display (CRT) screen
Light transmission between two sides is bad, i.e. light is difficult to penetrating LCD device screen and negative electrode display tube display
(CRT) screen.Light-sensitive element group 502, light-sensitive element group 503 are suitably arranged on the side of touch pad 501
Face, or above.
When making the present embodiment realize operating with non-luminous touch part, should not use as shown in Figure 10
Structure, the suitable structure used as shown in figure 11.
Specific embodiment four, with the screen of light-emitting diode display as touch pad:
Referring to figs. 1 through Fig. 9, and Figure 12, optical touch screen system is with the screen of light-emitting diode display for touching
Plate 501 is essentially identical with protective plate for touch pad 501, structure and principle.
One of different, the screen of light-emitting diode display, relative to the difference of protective plate, is that LED shows
Before and after the screen of device, the light transmission between two sides is bad, i.e. light is difficult to penetrate the screen of light-emitting diode display.
Light-sensitive element group 502, light-sensitive element group 503 are suitably arranged on before touch pad 501.
With reference to Figure 14, the screen of most light-emitting diode displays is formed by substantial amounts of single led 141, photosensitive
Element group 502, light-sensitive element group 503 can also be arranged between substantial amounts of single led 141, i.e. light
Quick original paper is embedded in touch pad.Due to light-sensitive element group 502, light-sensitive element group 503 small volume, and
Transparent do not interfere with visual effect.Light-sensitive element group 502, light-sensitive element group 503 are arranged on substantial amounts of single
Between LED 141, it is simple to increase light-sensitive element group 502, light-sensitive element group 503 quantity, and then increase
The degree of accuracy of optical touch screen system.For the ease of receiving optical signal, light-sensitive element group 502, light-sensitive element group
The height of the photosurface of 503 should be higher than that single led 141 height.
For the touch pad that other fronts are transparent, it would however also be possible to employ light-sensitive element is embedded within touch pad
Structure, such as the liquid crystal display equipment screen of giant-screen, light-sensitive element group 502, light-sensitive element group 503 can also
It is embedded in as in the liquid crystal display equipment screen of the giant-screen of touch pad.Due to light-sensitive element group 502, photosensitive
Element group 503 small volume, and transparent do not interfere with visual effect.Such structure is compacter, steady
Fixed.
The two of difference, light can not be at the inside screen ordered propagation of light-emitting diode display, so being not easy to reality
Now operate with non-luminous touch part.
Specific embodiment five, with projecting apparatus screen as touch pad:
Referring to figs. 1 through Fig. 9, and Figure 12, optical touch screen system is with projecting apparatus screen for touch pad 501
Essentially identical with protective plate for touch pad 501, structure and principle.
Difference, projecting apparatus screen is not transparent medium, and light can not be at the screen of projecting display
Internal order is propagated, so being not easy to realize operating with non-luminous touch part.Light-sensitive element group 502,
Light-sensitive element group 503 is suitably arranged on projecting apparatus screen front or behind.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, the present invention is not limited by above-mentioned using method, above-mentioned using method and
The principle that the present invention is simply described described in description, in the premise without departing from spirit and scope of the invention
Under, the present invention also has various changes and modifications, and these changes and improvements both fall within claimed this
In bright scope.Claimed scope is defined by appending claims and equivalent thereof.
Claims (80)
1. optical touch screen system and the system of felt pen combination, including optical touch screen system and felt pen, optical touch screen system includes touch pad, signal processing system, also include light-sensitive element group, described light-sensitive element group includes a plurality of light-sensitive element, a plurality of light-sensitive elements connect signal processing system, and the light-sensitive element in light-sensitive element group is connected by light with touch pad；
When using optical touch screen system, presenting a relevant luminous point on a touchpad, light-sensitive element, by irradiating from the light of described luminous point, is reflected as the signal of telecommunication being correlated with；
Felt pen includes a contact felt pen, and contact felt pen includes a shell, power supply, switch and light-emitting component, the luminous situation of on-off control light-emitting component；Switch is connected with the touch end of contact felt pen, touches end and triggers switch when touching touch pad, and light-emitting component is luminous, forms luminous point on a touchpad；
Access the signal generating module producing electric oscillation signal between the power supply of described contact felt pen and light-emitting component, make light-emitting component produce the optical signal of flicker；
Contact felt pen, is communicated with optical touch screen system by the optical signal of flicker, and contact felt pen, by the optical signal carrying unlocking information is sent to touch screen, completes the unblock of optical touch screen.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterized in that, touch pad select, the screen of projecting display, liquid crystal display equipment screen, negative electrode display tube indicator screen, the screen of light-emitting diode display, projecting apparatus screen, screen front transparent protective plate in one.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterized in that, remote touch pen includes laser instrument, power supply, also include that one is easy to hand-held shell, described laser instrument, power supply are arranged in the enclosure, being provided with switch between described laser instrument and described power supply, described switch is arranged on the housing.
Optical touch screen system the most according to claim 3 and the system of felt pen combination, it is characterized in that, remote touch pen also includes a signal generating module, power supply connects signal generating module, signal generating module connecting laser, signal generating module produces the signal of telecommunication of vibration, and drives laser instrument to send the laser signal of the flicker corresponding with the signal of telecommunication.
Optical touch screen system the most according to claim 3 and the system of felt pen combination, it is characterised in that remote touch pen produces light beam, and this light beam forms a luminous point on a touchpad；Remote touch pen, by remotely controlling luminous point, realizes corresponding remotely operation to optical touch screen system.
Optical touch screen system the most according to claim 4 and the system of felt pen combination, it is characterized in that, remote touch pen is communicated with optical touch screen system by the optical signal of flicker, contact felt pen, by the optical signal carrying unlocking information is sent to touch screen, completes the unblock of optical touch screen.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterised in that by plus lens by light collection to the photosurface of described light-sensitive element group.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterized in that, remote touch pen includes laser instrument, power supply, shell, there is on shell switch sections, tool power supply in shell, power supply connects signal generating module, signal generating module connecting laser, signal generating module produces the signal of telecommunication of vibration, and drives laser instrument to send the laser signal of the flicker corresponding with the signal of telecommunication, and then forms the luminous point of flicker in optical touch screen system.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterized in that, a relevant luminous point is presented on described touch pad, light-sensitive element group is by irradiating from the light of described luminous point, it is reflected as the signal of telecommunication being correlated with, the intensity of the described signal of telecommunication and the light-sensitive element distance dependent to described luminous point；The signal of telecommunication that light-sensitive element produces is sent to signal processing system, and signal processing system is by analyzing the information including intensity of a plurality of signals of telecommunication that a plurality of light-sensitive elements produce, it is thus achieved that described luminous point positional information on a touchpad.
Optical touch screen system the most according to claim 1 and the system of felt pen combination, it is characterised in that described optical touch screen system includes that a plurality of light-sensitive element group, described light-sensitive element group front are provided with a plus lens.
11. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, the signal of telecommunication that described light-sensitive element produces is sent to signal processing system, signal processing system is by analyzing the electrical signal information that light-sensitive element group produces, it is thus achieved that described luminous point positional information on a touchpad.
12. optical touch screen systems according to claim 11 and the system of felt pen combination, it is characterized in that, described signal processing system processes the signal of telecommunication produced in described light-sensitive element group, the information with distance dependent in the signal of telecommunication can be processed, or information relevant with angle in the process signal of telecommunication, or integrated treatment.
13. optical touch screen systems according to claim 10 and the system of felt pen combination, it is characterised in that described light-sensitive element group is formed by a plurality of independent light-sensitive element sequential combination.
14. optical touch screen systems according to claim 10 and the system of felt pen combination, it is characterised in that a plurality of light-sensitive elements are integrated on an integrated package by described light-sensitive element group.
15. optical touch screen systems according to claim 10 and the system of felt pen combination, it is characterised in that described light-sensitive element group directly uses the imageing sensor being integrated with a large amount of light-sensitive element.
16. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, when described luminous point flashes with certain frequency, light-sensitive element will produce the signal of telecommunication of the vibration relevant to the optical signal frequency of luminous point, and the signal of telecommunication of vibration is easy to amplification, frequency-selecting.
17. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described luminous point is selected with the luminous point of certain frequency flicker, and signal processing system includes a frequency-selecting module corresponding with described smooth dot flicker rate.
18. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, described signal processing system, obtaining the position of described luminous point by comparing luminous point to the distance difference relation of light-sensitive element in light-sensitive element group, the difference from the light signal strength of described luminous point that the difference of distance is received by each light-sensitive element is reflected.
19. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that for the touch pad of plane, need the light-sensitive element of two row's cross arrangements both to can determine that the position of luminous point.
20. optical touch screen systems according to claim 19 and the system of felt pen combination, it is characterised in that the light-sensitive element that a row is transversely arranged, the relevant signal of telecommunication difference relationship produced by each light-sensitive element, determine the lateral coordinates of luminous point；The light-sensitive element of one row's longitudinal arrangement, the relevant signal of telecommunication difference relationship produced by each light-sensitive element, determine the longitudinal coordinate of luminous point, so that it is determined that the position that luminous point is on a touchpad.
21. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, described " light-sensitive element in light-sensitive element group is connected by light with touch pad " refers to that, in the light of touch pad, at least Ray Of Light is through light-sensitive element.
22. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that at least two light-sensitive elements of the light-sensitive element in described light-sensitive element group are connected by light with touch pad.
23. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described signal processing system, obtain the position of described luminous point by the angular relationship between luminous point and light-sensitive element group.
24. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that for the touch pad of plane, two groups of light-sensitive element groups with plus lens may determine that the position of luminous point.
25. optical touch screen systems according to claim 24 and the system of felt pen combination, it is characterized in that, one light-sensitive element group determines polar coordinate relevant with angle, two light-sensitive element groups determine two interlaced polar coordinate relevant with angle, by including the information that two polar coordinate are determined, determine the position of luminous point.
26. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, when described signal processing system obtains the position of described luminous point by the angular relationship between luminous point and light-sensitive element group, it is also possible to the difference relationship of the light signal strength on light-sensitive element in light-sensitive element group is analyzed.
27. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, described light-sensitive element group is not provided with plus lens, obtains the signal processing system of the position of described luminous point by comparing luminous point to the distance difference relation of light-sensitive element in light-sensitive element group.
28. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that when described touch pad is transparent protective plate, the light of luminous point obviously can penetrate protective plate, so light-sensitive element group can be arranged on the front of protective plate；Can also be arranged between screen and protective plate, i.e. after protective plate；Can also be arranged in around protective plate edge.
29. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, the optical touch screen system that contact touches, the light source of described luminous point has following form, a kind of form is that optical touch screen system itself does not have light source, the extraneous device used with the collocation of optical touch screen system has light source, the device of collocation such as contact felt pen, and this light source produces described luminous point；A kind of form is that optical touch screen system itself has optical touch screen system source, and extraneous and the collocation of optical touch screen system device also has light source, and the light source of described luminous point is any one light source therein.
30. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described light-emitting component is the light-emitting component launching visible ray, or launches the light-emitting component of black light.
31. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described power supply directly can connect light-emitting component by switch.
32. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described light-emitting component uses light emitting diode, and light emitting diode is positioned at the contact jaw of a shell and touch pad, and light emitting diode upper end props up the button of switch.
33. optical touch screen systems according to claim 32 and the system of felt pen combination, it is characterized in that, when using contact felt pen, light emitting diode touches touch pad, and described light emitting diode is under pressure and triggers the button of switch, light-emitting component is luminous, forms luminous point on a touchpad.
34. optical touch screen systems according to claim 33 and the system of felt pen combination, it is characterised in that described luminous point with signal generating module with switch corresponding frequency scintillation.
35. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that the power supply of described contact felt pen is charge power supply, and a shell is provided with charging inlet.
36. optical touch screen systems according to claim 35 and the system of felt pen combination, it is characterized in that, when described contact felt pen is applied to portable electric appts, portable electric appts is provided with contact felt pen slot, it is provided with charging electrode in contact felt pen slot, time in contact felt pen insertion contact felt pen slot, described charging inlet docks with charging electrode, charges charge power supply.
37. optical touch screen systems according to claim 2 and the system of felt pen combination, it is characterised in that when described touch pad is screen, in light-sensitive element group, light-sensitive element is arranged in screen periphery.
38. optical touch screen systems according to claim 2 and the system of felt pen combination, it is characterized in that, when described screen is the screen with light transmission, luminous point can penetrate screen, in light-sensitive element group, light-sensitive element is except being arranged in screen front, or is arranged in screen rear.
39. optical touch screen systems according to claim 2 and the system of felt pen combination, it is characterized in that, when described screen is the screen that front is transparent medium, transparent medium such as glass, transparent plastics, the light of luminous point injection can be at transparent medium internal communication to transparent medium periphery, in described light-sensitive element group, light-sensitive element can be arranged in screen front, or is arranged in around transparent medium edge, or is embedded in inside transparent medium.
40. optical touch screen systems according to claim 2 and the system of felt pen combination, it is characterized in that, when described touch pad is transparent protective plate, the light of luminous point can penetrate protective plate, so light-sensitive element group can be arranged on the front of protective plate, and it is arranged in around protective plate.
41. optical touch screen systems according to claim 2 and the system of felt pen combination, it is characterized in that, when described touch pad is transparent protective plate, the light of luminous point can penetrate protective plate, so light-sensitive element group can be arranged between screen and protective plate, i.e. after protective plate, it is arranged in around protective plate；Or it is arranged in around protective plate edge；Or it is embedded in inside transparent medium.
42. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that optical touch screen system also includes an optical touch screen system source.
43. optical touch screen systems according to claim 42 and the system of felt pen combination, it is characterized in that, described touch pad front portion is transparent medium, and the more uniform outer surface that is radiated at of light that described light source produces has on the touch pad of transparent medium, and transmission outside touch pad.
44. optical touch screen systems according to claim 42 and the system of felt pen combination, it is characterised in that described light is derived from the more uniform irradiation in the touch pad back side or side on a touchpad, and more uniform transmission outside touch pad；Use a touch part contact touch pad, touch the part the irradiating of light by light source, form luminous point.
45. optical touch screen systems according to claim 44 and the system of felt pen combination, it is characterised in that described touch part refers to touch the object of touch pad, can be any one in finger, pen.
46. optical touch screen systems according to claim 44 and the system of felt pen combination, it is characterized in that, described luminous point moves with the movement touching part, touches the part touch operation to optical touch screen system by information realizations such as the flicker frequencies of the movement of luminous point, the presence or absence of luminous point and luminous point.
47. optical touch screen systems according to claim 44 and the system of felt pen combination, it is characterized in that, described touch part from touch pad farther out time, in the light appeared by touch pad, only a small amount of light is radiated on touch part, small part light is only had the most again to be reflected back touch pad again, and the light being reflected back is not concentrated, it is impossible to forming luminous point, optical touch screen system is not responding to.
48. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, with protective plate as touch pad, it is provided with strip-shaped light source in the horizontal side of the close screen side of protective plate, another horizontal side is provided with the light-sensitive element group of row's light-sensitive element composition, the light of strip-shaped light source passes through protective plate, and direction of illumination is another horizontal side corresponding thereto, and slight oblique protective plate front；It is provided with strip-shaped light source in longitudinal side of the close screen side of protective plate, another longitudinal side is provided with the light-sensitive element group of row's light-sensitive element composition, the light of strip-shaped light source passes through protective plate, and direction of illumination is another longitudinal side corresponding thereto, and slight oblique protective plate front.
49. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, two row's light-sensitive elements connect through and compare luminous point and obtain the signal processing system of the position of described luminous point to the distance difference relation of light-sensitive element in light-sensitive element group.
50. optical touch screen systems according to claim 49 and the system of felt pen combination, it is characterized in that, two light-sensitive element groups being made up of row's light-sensitive element, can replace to be provided with the light-sensitive element group of plus lens, two light-sensitive element groups being provided with plus lens connect through the information including the angular relationship between luminous point and light-sensitive element group, it is thus achieved that the signal processing system of described light spot position.
51. optical touch screen systems according to claim 48 and the system of felt pen combination, it is characterised in that described strip-shaped light source, is the light source of the strip being arranged in by multiple little sub-light sources, it is also possible to include the luminous body of a strip.
52. optical touch screen systems according to claim 48 and the system of felt pen combination, it is characterised in that plural number bar strip-shaped light source, simultaneously during injection light, the light of touch pad injection is difficult to uniformly, it is possible to have influence on the determination to light spot position.
53. optical touch screen systems according to claim 48 and the system of felt pen combination, it is characterized in that, article one, the optical signal of strip-shaped light source injection, be converted into the corresponding signal of telecommunication by corresponding light-sensitive element and be sent to signal processing system, signal processing system using this corresponding signal of telecommunication as obtain described luminous point location dependent information on a touchpad.
54. optical touch screen systems according to claim 52 and the system of felt pen combination, it is characterised in that described plural number bar strip-shaped light source is alternately lighted, when wherein a strip-shaped light source is not lighted, the signal of telecommunication of corresponding light-sensitive element group output is not received.
55. optical touch screen systems according to claim 48 and the system of felt pen combination, it is characterised in that during a strip light source igniting, the signal of telecommunication of corresponding light-sensitive element group output is received by signal processing system and processes.
56. optical touch screen systems according to claim 52 and the system of felt pen combination, it is characterised in that described plural number bar strip-shaped light source, be provided with light-sensitive element with each strip-shaped light source to deserved；Each strip-shaped light source is respectively provided with the flicker frequency that difference is bigger；The each light-sensitive element corresponding with each strip-shaped light source connects the frequency-selecting module corresponding with this strip-shaped light source flicker frequency respectively.
57. optical touch screen systems according to claim 3 and the system of felt pen combination, it is characterised in that laser instrument is the laser instrument launching visible ray, or launches the laser instrument of black light.
58. optical touch screen systems according to claim 3 and the system of felt pen combination, it is characterized in that, described switch sections is provided with multiple button, the unlike signal that each button produces corresponding to signal generating module, makes remote touch pen can produce the multiple laser signal with different information.
59. optical touch screen systems according to claim 3 and the system of felt pen combination, it is characterised in that the power supply of remote touch pen is charge power supply.
60. optical touch screen systems according to claim 3 and the system of felt pen combination, it is characterised in that described laser instrument has two, and visible ray launched by laser instrument, and laser instrument launches infrared ray, the light ray parallel that two laser instrument send.
61. optical touch screen systems according to claim 4 and the system of felt pen combination, it is characterized in that, the signal generating module of described remote touch pen produces the multiple signal of telecommunication, is connected with switch key, having three buttons on described switch, each button is corresponding with a kind of signal of telecommunication.
62. optical touch screen systems according to claim 61 and the system of felt pen combination, it is characterised in that described every kind of signal of telecommunication drives laser instrument to produce corresponding laser signal.
63. optical touch screen systems according to claim 3 and the system of felt pen combination, it is characterised in that there is on the shell of described remote touch pen the fixed structure of ring shape.
64. optical touch screen systems according to claim 63 and the system of felt pen combination, it is characterised in that felt pen can be fixed on finger by described fixed structure, produce the luminous point following finger movement.
65. optical touch screen systems according to claim 63 and the system of felt pen combination, it is characterized in that, described shell is provided with the fixed structure of two ring shape, connected by wire between two fixed structures, equipped with launching ultrared laser instrument on one fixed structure, equipped with switch, power supply, signal generating module, signal amplification module on another fixed structure.
66. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, described light-sensitive element is the light-sensitive element that applicable wavelengths scope is narrower, utilizes the light-sensitive element selectivity to wavelength of optical signal itself, eliminates the interference of other wavelength channels.
67. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterized in that, described light-sensitive element group, employing infrared optical sensor, for infrared light sensitive diode, infrared phototriode, light-sensitive element integrated package, or imageing sensor.
68. optical touch screen systems according to claim 1 and the system of felt pen combination, it is characterised in that described light-sensitive element group is provided with light-shielding structure, and described light-shielding structure is for blocking the light that irrelevant direction is penetrated.
69. optical touch screen systems according to claim 68 and the system of felt pen combination, it is characterised in that described irrelevant direction, refer to except the direction in addition to touch pad.
70. optical touch screen systems according to claim 68 and the system of felt pen combination, it is characterized in that, described light-shielding structure uses light-filtering channels, the light-filtering channels that the material that light-sensitive element group upper cover is differed from is made by light transmission, is used for filtering the light of directive light-sensitive element beyond touch pad.
71. optical touch screen systems according to claim 70 and the system of felt pen combination, it is characterised in that being provided with elongated light-transmitting opening on described light-filtering channels, light-sensitive element group is arranged in the position having certain distance away from light-transmitting opening.
72. systems combined according to the optical touch screen system described in claim 71 and felt pen, it is characterized in that, described light-transmitting opening is slightly towards touch pad, and the angle of light-transmitting opening direction and touch pad reduces with the increase of touch pad width on light-transmitting opening direction.
73. systems combined according to the optical touch screen system described in claim 72 and felt pen, it is characterised in that the light on described touch pad arrives light-sensitive element group through light-transmitting opening, and the most of light beyond touch pad is blocked by light-filtering channels.
74. optical touch screen systems according to claim 20 and the system of felt pen combination, it is characterised in that set multiplication constant on axis of abscissas as n, a length of l of abscissa of each coordinates regional.
75. systems combined according to the optical touch screen system described in claim 74 and felt pen, it is characterised in that when luminous point is positioned at coordinates regional, with the luminous point light intensity difference change β when crossing over coordinates regional as reference.
76. systems combined according to the optical touch screen system described in claim 75 and felt pen, it is characterised in that transversely arranged two light-sensitive element corresponding with coordinates regional in coordinates regional, the light intensity reflected often changesIt is considered as luminous point to move on the horizontal scale。
77. systems combined according to the optical touch screen system described in claim 76 and felt pen, it is characterised in that described optical touch screen system includes that touch pad, according to its position relationship, is divided into a plurality of coordinates regional by row's light-sensitive element, described row's light-sensitive element；Luminous point described in signal processing system record moves to the light intensity difference that opposite side causes and is set to β from a former coordinates regional side；When luminous point moves to adjacent coordinates region, adjacent coordinates zonal ray Strength Changes situation is compared with β, and according to adjacent coordinates peak width and former coordinates regional wide association, determine luminous point position on adjacent coordinates region.
78. optical touch screen systems according to claim 6 and the system of felt pen combination, it is characterized in that, the digital information that unlocking information entrained in the optical signal that contact felt pen and/or remote touch pen send is included in carrier wave, or the signal with frequency oscillation and specific frequency.
79. systems combined according to the optical touch screen system described in claim 78 and felt pen, it is characterised in that contact felt pen and/or remote touch pen constantly send to optical touch screen system in use and carry the optical signal organizing unlocking information more, produce luminous point.
80. systems combined according to the optical touch screen system described in claim 78 and felt pen, it is characterised in that the luminous point that described optical touch screen system produces with the optical signal carrying many group unlocking information is relevant luminous point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310185668.3A CN103399672B (en) | 2009-08-17 | 2009-08-17 | Optical touch screen system and felt pen combined system |
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| CN201310185668.3A CN103399672B (en) | 2009-08-17 | 2009-08-17 | Optical touch screen system and felt pen combined system |
| CN2009101663237A CN101630213B (en) | 2008-08-22 | 2009-08-17 | Optical touch screen, optical touch screen light source and touch pen |
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| CN2009101663237A Division CN101630213B (en) | 2008-08-22 | 2009-08-17 | Optical touch screen, optical touch screen light source and touch pen |
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| CN104615273A (en) * | 2014-12-08 | 2015-05-13 | 沈阳工业大学 | Wearable remote wireless controller |
| CN106534933A (en) * | 2016-11-23 | 2017-03-22 | 广州视源电子科技股份有限公司 | Interaction device, mode selection method and system |
| CN109521342A (en) * | 2018-12-29 | 2019-03-26 | 云南电网有限责任公司电力科学研究院 | A kind of method and system optically recording and diagnose switch breakdown |
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Application publication date: 20131120 Assignee: Jiashan Zhicheng Technology Intermediary Service Co.,Ltd. Assignor: Jiashan Taozhuang renewable resources Co.,Ltd. Contract record no.: X2022330000833 Denomination of invention: Optical touch screen system and touch pen combination system Granted publication date: 20161005 License type: Common License Record date: 20221223 |