CN101887327A

CN101887327A - Multi-input large-area writing method, device and system

Info

Publication number: CN101887327A
Application number: CN 201010218446
Authority: CN
Inventors: 廖明忠
Original assignee: Individual
Current assignee: Shenzhen Yuheng Interactive Technology Development Co ltd
Priority date: 2010-07-02
Filing date: 2010-07-02
Publication date: 2010-11-17
Anticipated expiration: 2030-07-02
Also published as: CN101887327B

Abstract

The invention provides a multi-input large-area writing method, a multi-input large-area writing device and a multi-input large-area writing system. The method comprises the following steps that: a handwriting input detection device detects whether a light spot enters a plane monitoring area or not; when detecting that the light spot enters the plane monitoring area, the handwriting input detection device sends trigger information to a receiver; the receiver acquires the motion trace data sensed by a luminous device generating the light spot, wherein the motion trace data is sensed by a motion sensing unit in the luminous device; and a control host computer acquires or erases the handwriting information according to the motion trace data acquired by the receiver. The method, the device and the system can remarkably reduce the requirements on the precision and speed of an independently used CMOS sensor, lower the cost, improve the accuracy and speed of inputting and erasing the handwriting information and greatly improve the cost and performance while ensuring that multiple electronic light pens and electronic erasers are used at the same time.

Description

A kind of multi-input large-area writing method, Apparatus and system

Technical field

The present invention relates to electronic technology field, relate in particular to a kind of multi-input large-area writing method, Apparatus and system.

Background technology

Electronic whiteboard is a kind of multimedia presentation equipment, has been widely used in occasions such as modernized multimedia office and teaching.Electronic whiteboard positions devices such as all types of electronic pen in the monitored area, corresponding plane or electronics blackboard erasers by various monitoring equipments, and the line data of going forward side by side is handled can obtain corresponding literal or image etc.If according to the positioning principle of electronic whiteboard, that electronic whiteboard can be divided into is induction, six kinds of infrared types, ultrasonic type, resistance pressure-sensitive, laser positioning type, CCD (Charge-coupled Device, charge coupled cell) video camera.What wherein application at present was more is following several.

1, infrared type.Receive and power valve constitutes the scanning grid of level and vertical direction by the infrared ray around gathering in the viewing area, form a plane of scanning motion net, when object blocks is lived in the grid certain to level and vertical scan line, just can determine coordinate by the level that is blocked and the infrared ray position of vertical direction.

2, resistance pressure-sensitive.Principle of work: touch-screen is a kind of man-machine interactive input equipment of finishing the work of appointment with shown option on finger or style of writing and the screen.Whiteboard surface is covered on the conductive layer of a rigidity by a resilient membrane of conducting layer, when certain a bit is under pressure, two membranes causes short circuit in this, controller detects the coordinate figure (position that finger or style of writing reach) of pressure spot, send into computing machine through interface, this is the touch-screen that belongs to the resistance membrane type.

3, linear array CCD camera.Ultimate principle: when the luminous electron pen enters the camera watch region of linear array CCD camera, the one or more triangles of corresponding formation between luminous electron pen and a plurality of ccd video camera, the angle of the relative ccd video camera of luminous electron pen can be detected by ccd video camera, the position of luminous electron pen can be obtained according to described angle by the mode of asking leg-of-mutton intersection point.

The inventor finds that mainly there is following defective in above-mentioned various existing scheme:

1, infrared type:, therefore have influence on the accuracy of location because floating dust also can stop in the grid certain to level and vertical scan line.

2, resistance pressure-sensitive: because whiteboard surface is to be covered on the conductive layer of a rigidity by a resilient membrane of conducting layer to constitute, therefore, its poor durability, be afraid of to scratch, reaction velocity is slower, can't do overlarge area, and cost is higher, is unfavorable for popularizing of electronic whiteboard.

3, linear array CCD camera: because present video cameras such as line array CCD are relatively more expensive, make that the cost of electronic whiteboard is higher, be unfavorable for popularizing of electronic whiteboard.

Summary of the invention

Embodiment of the invention technical matters to be solved is, a kind of multi-input large-area writing method, writing input detector for hand, receiver and system are provided, can be directly motion sensor by luminous electron pen or luminous electron blackboard eraser inside carry out obtaining of motion trace data, thereby improve the input of user's hand-written information and the accuracy of wiping of corresponding information, the cost of electronic whiteboard can also be reduced, and a plurality of electronic pens can be satisfied simultaneously or the electronics blackboard eraser carries out work simultaneously.

In order to solve the problems of the technologies described above, the invention provides a kind of multi-input large-area writing method, comprising:

Whether the writing input detector for hand detection exists luminous point to enter the monitored area, plane;

When detecting when existing luminous point to enter monitored area, described plane, send trigger message to receiver;

Described receiver is according to described trigger message, obtains the motion trace data that the luminescent device that produces described luminous point senses, and described motion trace data is obtained by the motion sensing unit senses of described luminescent device inside;

The motion trace data that main control system gets access to according to described receiver is carried out the processing of wiping of obtaining of hand-written information or hand-written information.

Wherein, described receiver is according to described trigger message, obtains before the step of the motion trace data that the luminescent device that produces described luminous point senses, and also comprises:

Whether described receiver detects the luminescent device that produces described luminous point in running order;

When the result who detects is the luminescent device that produces described luminous point when in running order, carries out the step of the motion trace data that the described luminescent device that obtains the described luminous point of generation senses.

Wherein, whether in running order described receiver detect luminescent device the step that produces described luminous point, comprising:

When receiving the trigger message of described writing input detector for hand transmission, described receiver judges whether to receive the vibration data of the luminescent device that produces described luminous point, if can judge that then described luminescent device is in running order;

Wherein, the vibration data of described luminescent device is that motion sensing unit senses by described luminescent device inside obtains.

Wherein, whether in running order described receiver detect before the luminescent device that produces described luminous point the step, also comprises:

Described writing input detector for hand obtains the positional information of luminous point, and by described positional information is calculated, obtains the coordinate information of described luminous point in monitored area, described plane, and described coordinate information is sent to described receiver;

Described receiver is according to the number information of at least one luminescent device that presets, successively to the corresponding luminescent device of described number information send control information so that the corresponding illuminants part by or the flicker mode switch be work flicker pattern;

Described receiver is according to the coordinate information of the described luminous point that obtains, the numbering that identification enters the luminescent device in the monitored area, described plane, and according to the described type that enters the luminescent device in the monitored area, plane of described numbering identification, the type of described luminescent device comprises: write type and wipe type.

Wherein, the motion trace data that main control system gets access to according to described receiver carry out obtaining of hand-written information or hand-written information wipe processing before, also comprise:

Described writing input detector for hand obtains the positional information of luminous point, determines approximate center and writes edge coordinate, and described edge coordinate is sent to described receiver;

Described receiver is according to the described edge coordinate of writing, and what writing input detector for hand was determined in computing effectively writes the zone, and the effective coverage is sent to main control system;

Described main control system is according to the described zone of effectively writing, and portion forms effective mapping within it.

Wherein, the motion trace data that described main control system receives according to described receiver is carried out the step of wiping processing of obtaining of hand-written information or hand-written information, comprising:

If described receiver identify enter the luminescent device in the monitored area, described plane type for writing type, described main control system obtains handwritten input information according to the motion trace data that described receiver receives;

If described receiver identify enter the luminescent device in the monitored area, described plane type for wiping type, described main control system is wiped handwritten input information according to the motion trace data that described receiver receives.

Wherein, the motion trace data that described main control system receives according to described receiver is carried out wiping before the processing of obtaining of hand-written information or hand-written information, also comprises:

Described receiver utilizes writing input detector for hand to obtain the positional information of luminous point, by calculating the calibration coordinate as the motion trace data of the motion sensing unit of writing luminescent device inside in the zone.

Wherein, also comprise:

The luminescent device that produces described luminous point is to receiver transmit operation order, so that described main control system carries out format analysis processing according to the described operational order that described receiver receives to corresponding handwritten input information.

Correspondingly, the embodiment of the invention also provides a kind of writing input detector for hand, comprising: CMOS optical alignment sensor, and processing unit, notification unit, wherein,

Whether described CMOS optical alignment sensor is used for detecting and exists luminous point to enter the monitored area, plane, and when detecting when existing luminous point to enter monitored area, described plane, obtains the positional information of described luminous point;

Described processing unit is used for calculating the coordinate information of the described luminous point of acquisition in monitored area, described plane by the described positional information that described optical alignment sensor is obtained;

Notification unit is used for sending trigger message and described coordinate information when detecting when existing luminous point to enter monitored area, described plane to receiver.

Correspondingly, the embodiment of the invention also provides a kind of receiver, comprising:

Transmit-Receive Unit, be used to preset the planar obit simulation data that luminescent device internal motion sensor sensing that the number information of at least one luminescent device, the trigger message that receives writing input detector for hand and coordinate information, reception produce luminous point obtains, and other operational order and calibration coordinate;

Processing unit is used for according to described number information and described coordinate information, the type that identification enters the luminescent device in the monitored area, described plane, and the type of described luminescent device comprises: write type and wipe type; The coordinate that also is used to judge the validity of coordinate information and produces correction luminescent device internal motion sensor error according to coordinate information.

Wherein, described Transmit-Receive Unit also is used for the number information according at least one luminescent device of presetting, successively to the corresponding illuminants part send described control information with the luminescent device of controlling the described luminous point of described generation by or the flicker mode switch be work flicker pattern;

Judging unit is used to judge whether the luminescent device that produces luminous point is in running order.

Wherein, described processing unit is judged the validity of the coordinate information receive, and effectively writes the zone with what this determined writing input detector for hand, and the effective coverage is sent to main control system so that described main control system within it portion form effective mapping.

Described processing unit also utilizes the coordinate information of receiving, produces to proofread and correct the coordinate of writing the luminescent device internal motion sensor error in the zone;

Correspondingly, the embodiment of the invention also provides a kind of hand-written input system, comprising:

A writing input detector for hand, described writing input detector for hand, whether be used for detecting exists at least one luminous electron pen and luminous electron blackboard eraser institute luminous point to enter the monitored area, plane, and, send trigger message to described receiver when detecting when existing luminous point to enter monitored area, described plane;

At least one Zhi Suoshu luminous electron pen when entering the monitored area, plane at hand-written pick-up unit place, can be detected, and launches number information and movement locus coordinate simultaneously to receiver;

At least one Zhi Suoshu luminous electron blackboard eraser when entering the monitored area, plane at hand-written pick-up unit place, can be detected, and launches number information and movement locus coordinate simultaneously to receiver;

A described receiver, be used for when receiving the trigger message of described writing input detector for hand, obtain described luminous electron pen that produces described luminous point or the motion trace data that described luminous electron blackboard eraser senses, wherein, described motion trace data is obtained by the motion sensing unit senses of described luminous electron pen or described luminous electron blackboard eraser inside;

A described main control system carries out the processing of wiping of obtaining of hand-written information or hand-written information according to the motion trace data that described receiver receives.

Wherein, described writing input detector for hand also is used to obtain the positional information of luminous point, and by described positional information calculation being obtained the coordinate information of described luminous point in monitored area, described plane, and send described coordinate information to described receiver;

Whether described receiver also is used to detect the luminescent device that produces described luminous point in running order, and according at least one number information that presets, successively to and the corresponding luminescent device of described number information send control information with control corresponding illuminants part by or the flicker mode switch be work flicker pattern, and the numbering that identification enters the luminescent device in the monitored area, described plane according to the coordinate information of described writing input detector for hand, according to the quantity of the luminescent device of described type that enters the luminescent device in the monitored area, plane of described numbering identification and present use.Also be used to judge the validity of the coordinate information of receiving, and effectively write the zone, and the effective coverage is sent to main control system, form effectively mapping in that main control system is inner with what this determined writing input detector for hand.Described receiver produces and proofreaies and correct the coordinate of writing the luminescent device internal motion sensor error in the zone also according to the coordinate information of receiving;

Wherein, described luminous electron pen or described luminous electron blackboard eraser comprise: luminescent device, and motion sensor, the sense data processing unit, wireless transmit/receive units, control module, wherein,

Described motion sensor is used for the motion sensing data of sensing self, and the vibration data when being used for sensing self and contacting with monitored area, described plane;

Described sense data processing unit is used for calculating motion trace data according to described sense data;

Described wireless transmit/receive units is used for sending described motion trace data and described vibration data to receiver, and is used to receive control information and the order that described receiver sends;

Control module, be used for the control information controlling light emitting device that receives according to described wireless transmit/receive units by or the flicker mode switch be work flicker pattern.

Wherein, described luminous electron pen or luminous electron blackboard eraser further comprise:

The operational order generation unit is used for the generating run order;

Described Transmit-Receive Unit also is used for sending described operational order to described receiver, and the error correction coordinate and the invalid coordinates order that receive the motion sensor of receiver emission;

The operational order that described main control system also is used for receiving according to described receiver is carried out corresponding format analysis processing to described handwritten input information.

Adopt the present invention, the optical alignment sensor only is used to detect the luminous electron pen or whether the luminous electron blackboard eraser enters the monitored area, plane, determines the scope of writing, and the coordinate that provides its internal motion sensor error to proofread and correct for luminous electron light pen or blackboard eraser.And carry out obtaining of motion trace data by the motion sensor of described luminous electron pen or luminous electron blackboard eraser inside, therefore described motion trace data obtain the influence that can't be subjected to dust or particle, thereby simple, convenient, realized the input of user's hand-written information and wiping of corresponding information accurately.Because motion sensor comprises one or more combinations in acceleration transducer, gyroscope and the magnetometer, therefore the motion sensor vibration information that can not only provide the first stroke of a Chinese character to start to write can also provide handwriting trace to follow the tracks of, and does the requirement of high-speed, high precision location to the precision and the speed of cmos sensor thereby significantly alleviated independent use cmos sensor.Because the track that motion sensor provides is again continuous, therefore can accurately judge the moving region of different luminous electron pens or electronics blackboard eraser again, thereby judge the position and the track of many pens, again by the cycle detection of CMOS to different luminous electron pens or electronics blackboard eraser, again can between or provide reference coordinate for luminous electron pen or blackboard eraser, thereby, reduce requirement that infrared ray is disturbed and to the track following requirement of many pens for motion sensor provides the correction of track drift error.The scope of writing is determined and the error correction of motion sensor because cmos sensor is only done, therefore also reduced and set up, proofreaied and correct the difficulty that cmos sensor causes, reduced cost, and improve the input of user's hand-written information and accuracy and the speed that corresponding information is wiped, because the precision of motion sensor and arithmetic speed will be much higher than cmos sensor.Owing to used the vibration judgement and the track following technology of CMOS location technology and motion sensor simultaneously, multiple outside infrared ray interference problem, a many luminous electron interference problem have been solved, and start to write decision problem, each luminous electron pen or electronics blackboard eraser of positioning track drifting problem, the first stroke of a Chinese character enters the decision problem of effectively writing the zone etc., therefore guaranteeing all to have obtained unprecedented lifting at cost and aspect of performance under the situation that many electronics light pens and electronics blackboard eraser use simultaneously.The present invention is not owing to need the resilient membrane of conducting layer of special employing in the resistance pressure-sensitive electronic whiteboard to cover on the conductive layer of a rigidity and special blank zone, applicable to as on the various common plate faces such as glass, normal blackboard, conference table, and adopt mass-produced in the market miniaturization, cost CMOS optical alignment sensor and acceleration transducer, gyroscope and magnetometer low, low in energy consumption, reduce the cost of electronic whiteboard, helped popularizing of electronic whiteboard.In addition, between the corresponding illuminants part can use as required or flicker pattern or work flicker pattern, reduced power consumption.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is that the structure of the electronic whiteboard of the embodiment of the invention is formed synoptic diagram;

Fig. 2 is that the structure of the another kind of electronic whiteboard of the embodiment of the invention is formed synoptic diagram;

Fig. 3 is that the structure of the hand-written input system of the embodiment of the invention is formed synoptic diagram;

Fig. 4 is that the structure of the writing input detector for hand of the embodiment of the invention is formed synoptic diagram;

Fig. 5 is that the structure of the receiver of the embodiment of the invention is formed synoptic diagram;

Fig. 6 is the schematic flow sheet of multi-input large-area writing method first embodiment of the present invention;

Fig. 7 is the schematic flow sheet of multi-input large-area writing method second embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

Fig. 1 is that the structure of the electronic whiteboard of the embodiment of the invention is formed synoptic diagram, as shown in Figure 1, the monitored area, plane of the electronic whiteboard of the embodiment of the invention is a blank or blackboard, optical alignment sensors A that is provided with on the both sides with specific degree angle in described blank or blackboard and optical alignment sensor B, described optical alignment sensor can adopt CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor (CMOS)) optical alignment sensor, described CMOS optical alignment sensor is with miniaturization, cost advantage low and low in energy consumption is in the industrial scale of mass production that realized.

In addition, also can on four angles in described blank or blackboard the optical alignment sensor be set respectively, as shown in Figure 2, receiver only obtains wherein two the optical alignment sensor sensings and the data after hand-written input media is handled of placing with specific degree angle.For example: obtain wherein optical alignment sensors A and the data of optical alignment sensor B, perhaps data of optical alignment sensor B and optical alignment sensor C etc.

Fig. 3 is that the structure of the hand-written input system of the embodiment of the invention is formed synoptic diagram, and as shown in Figure 3, this system comprises: luminous electron pen 1, and luminous electron blackboard eraser 2, writing input detector for hand 3, receiver 4, main control system 5, wherein:

Described luminous electron pen 1 and described luminous electron blackboard eraser 2 include luminescent device and the wireless transmit/receive units that produces luminous point, the user can carry out the input of literal or image information by the control in the monitored area, plane of corresponding electronic whiteboard of described luminous electron pen 1, perhaps wipes the literal or the image information of previous input by described luminous electron blackboard eraser 2 controls.

Luminescent device in described luminous electron pen 1 and the described luminous electron blackboard eraser 2 can produce required luminous point, its light-emitting mode is identical, can be set to lower standby mode of flicker frequency and the higher mode of operation of flicker frequency, and the switching that the control corresponding unit is used to control light-emitting mode can be set, when the user adopts mode of operation in use, described luminous electron pen 1 or luminous electron blackboard eraser 2 can glimmer luminous faster; Between when not using, adopting or the standby mode of flicker, with saves energy.

Each luminous electron pen or luminous electron blackboard eraser all have unique number information, before using corresponding luminous electron pen or luminous electron blackboard eraser, each luminous electron pen or luminous electron blackboard eraser send to described receiver 4 with described number information separately respectively by described wireless transmit/receive units, so that the type (luminous electron pen or luminous electron blackboard eraser) that 4 identifications of described receiver enter the luminescent device of monitored area, plane.

Described luminous electron pen 1 and described luminous electron blackboard eraser 2 also comprise: motion sensor, the sense data processing unit, wherein, described motion sensor is used for the motion sensing data of described luminous electron pen 1 of sensing or described luminous electron blackboard eraser 2, it comprises: acceleration transducer and/or gyroscope and magnetometer, by described acceleration transducer and/or described gyroscope and magnetometer, can sense acceleration sensing data and/or the gyroscope and the magnetometer sense data of described luminous electron pen 1 or luminous electron blackboard eraser 2, according to described acceleration sensing data and/or gyroscope and magnetometer sense data, described sense data processing unit can calculate the coordinate figure data in described luminous electron pen 1 or the monitored area, plane of luminous electron blackboard eraser 2 in electronic whiteboard, when described luminous electron pen 1 or 2 motions of luminous electron blackboard eraser, described sense data processing unit can access a series of coordinate figure data, can obtain described luminous electron pen 1 or the motion trace data of luminous electron blackboard eraser 2 on monitored area, described plane by described a series of coordinate figure data.When described receiver 4 need obtain described motion trace data, receiver 4 as described in described luminous electron pen 1 or described luminous electron blackboard eraser 2 send to as bluetooth, purple honeybee or other low-power consumption short-distance wireless radio-frequency receiving-transmitting mode by described wireless transmit/receive units.

In addition, described luminous electron pen 1 or the luminous electron blackboard eraser 2 inner acceleration transducers that are provided with, be used for described luminous electron pen 1 of sensing or luminous electron blackboard eraser 2 in working order the time, contact the special vibration that produces with monitored area, described plane, and the generation vibration data sends to described receiver 4 by wireless transmitter.And the motion sensing unit that is arranged in the described luminous electron blackboard eraser 2 also can detect the attitude of described luminous electron blackboard eraser 2, so that carry out the follow-up processing of wiping accordingly.Concrete, the useful area in the time of can at first setting whole blackboard eraser areas and use is determined the contact area of different attitudes then, as preceding half section, one angle or the like, thereby realizes that accurately follow-up wiping handle operation.

Simultaneously, described motion trace data and described vibration data that described luminous electron pen 1 or described luminous electron blackboard eraser 2 send, also can make described receiver 4 can determine that the user is using described luminous electron pen 1 or described luminous electron blackboard eraser 2 to carry out the input of hand-written information or wipe processing, be that described luminous electron pen 1 or described luminous electron blackboard eraser 2 are in running order, main control system 5 just can carry out the input of hand-written information or wipe, otherwise, described main control system 5 is not done any operation, to get rid of the interference that other luminous points bring.

Described writing input detector for hand 3, comprise at least two optical alignment sensors, whether be used for detecting exists luminous point to enter the monitored area, plane, and when detecting when existing luminous point to enter monitored area, described plane, send trigger message to receiver 4, and obtain positional information simultaneously, by being calculated, described positional information obtains the coordinate information of described luminous point in monitored area, described plane, and to the described coordinate information of described receiver 4 transmissions, described optical alignment sensor comprises CMOS optical alignment sensor.

Concrete, monitored area, described plane can be a blank or blackboard, optical alignment sensors A that is provided with on the both sides with specific degree angle in described blank or blackboard and optical alignment sensor B, described optical alignment sensor can adopt CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor (CMOS)) optical alignment sensor.When using described luminous electron pen 2 or luminous electron blackboard eraser 3, the user on monitored area, described plane, writes or during erase operation, can detect the luminous point that corresponding luminous electron pen 1 or luminous electron blackboard eraser 2 produce, described writing input detector for hand 3 sends trigger message to notify described receiver 4 to described receiver 4, and obtain the coordinate information of the luminous point that described luminous electron pen 1 or luminous electron blackboard eraser 2 produce, the process of obtaining the coordinate information of luminous point by described optical alignment sensor can be maximal value and minimum value that coordinate can be set in the angular field of view of optical alignment sensor, and between maximal value and minimum value, divide uniform scale to quantize, by the value process calculating of receiving that two cmos sensors quantize, described writing input detector for hand just can obtain described positional information.

Described writing input detector for hand 3 can send described trigger message and coordinate information to described receiver 4 by corresponding bluetooth, purple honeybee or other low-power consumption short-distance wireless wireless radiofrequency transmitting-receiving mode.

Described receiver 4 is used for the trigger message according to described writing input detector for hand 3 transmissions, obtain the motion trace data of the luminescent device that produces described luminous point, and carry out the processing of wiping of obtaining of corresponding hand-written information or hand-written information according to described motion trace data, wherein, described motion trace data is obtained by the motion sensing unit senses of described luminous electron pen or described luminous electron blackboard eraser inside.

Concrete, described receiver 4 is by bluetooth, purple honeybee or other low-power consumption short-distance wireless radio-frequency receiving-transmitting mode, receive trigger message and coordinate information that described writing input detector for hand 3 sends, and the motion trace data that senses of described luminous electron pen 1 or luminous electron blackboard eraser 2.

Described main control system 5 can be reduced to corresponding literal or image with the motion trace data that described luminous electron pen 1 senses by process software; Perhaps, wipe corresponding literal or image by the motion trace data of process software according to described luminous electron blackboard eraser 2.Described main control system 5 can adopt present existing all kinds of related softwares to carry out the reduction of literal or image, and perhaps literal or image wipes.

For described luminous electron pen 1 first stroke of a Chinese character or the detection of starting to write, described receiver 4 is realized by following steps:

When described hand input device 3 uses CMOS optical alignment sensor to sense perpendicular to the surveyed area panel data, can judge to exist luminous point to enter monitored area, described plane that at this moment, described hand input device 3 sends trigger message to described receiver 4;

Described receiver 4 has luminous point to enter the monitored area, plane by trigger message as can be known, but, in this case, the user may be just with the close monitored area, described plane of described luminous electron pen, do not write and start to write, thereby perhaps be that the CMOS optical alignment sensor that outside some other interference luminous point has influence on described hand input device 3 makes it produce erroneous judgement at this moment.

Therefore, when the trigger message that sends when existing luminous point to enter the monitored area, plane that described receiver 4 receives that described hand input device 3 sends, described receiver 4 needs also to judge whether user this moment starts to write enters the duty of writing, its deterministic process is: when described luminous electron pen 1 touch monitored area, described plane and the process of writing in, described luminous electron pen 1 can produce special vibration, promptly with the crash shock of blank, the acceleration transducer that is arranged at described luminous electron pen 1 inside can sense described special vibration, and the generation vibration data sends to described receiver 4, after described receiver 4 receives described vibration data and gets access to the motion trace data that the acceleration transducer of described luminous electron pen 1 inside senses, just can judge the duty that this moment, luminous electron pen 1 was write.At this moment, described receiver 4 just can carry out the reduction of hand-written information and handle according to the planar obit simulation data of described hand input device 3 transmissions.

Detect described luminous electron pen 1 first stroke of a Chinese character in the above described manner or start to write, can enter the monitored area, plane or leave the monitored area, plane and judge accurately luminous electron pen 1, the luminous point that can avoid being produced by other luminous objects be to the first stroke of a Chinese character that influence brought of CMOS optical alignment sensor or the erroneous judgement of starting to write.

Described receiver 4 also needed the luminescent device in the frontal plane monitored area is discerned before carrying out obtaining of hand-written information according to motion trace data or wiping, and promptly identification is luminous electron pen 1 or luminous electron blackboard eraser 2, and its identifying is as follows.

Whether described receiver 4 also is used to detect the luminescent device that produces described luminous point in running order, when the result who detects is the luminescent device that produces described luminous point when in running order, according at least one number information that presets, successively to the corresponding luminescent device transmitting control commands of described number information, so that the corresponding illuminants part by or the flicker mode switch be work flicker pattern, and according to the coordinate information of described writing input detector for hand 3, can identify when the pairing numbering of luminescent device that advances in the monitored area, described plane, according to the described type that enters the luminescent device in the monitored area, plane of described numbering identification.Simultaneously when identifying after the type of the luminescent device that advances into the monitored area, plane, the described luminescent device that enters the monitored area, plane is set to the higher work of flicker frequency flicker pattern, other light-emitting modes of numbering pairing luminescent device be between or the flicker pattern.

Described receiver 4 also is used to receive operational order, described operational order be the user as required, by the button on the described luminous electron pen 1 select in order to forms such as the font size of controlling described input information or font colors, described luminous electron pen 1 is accordingly to described receiver 4 transmit operation orders, and described main control system 5 carries out corresponding format analysis processing according to the described operational order that described receiver 4 receives to literal or the image that reduces.Concrete, described luminous electron pen 1 also can comprise: the operational order generation unit, be used for the generating run order, and Transmit-Receive Unit also is used for sending described operational order to described receiver 4.

Described receiver 4 also utilizes writing input detector for hand 3 to obtain the positional information of luminous point, as the calibration coordinate of the motion trace data of writing the luminescent device in the zone.

Concrete, the handwriting trace of luminous electron pen 1 or luminous electron blackboard eraser 2, motion sensor sensing by inside obtains, but because motion sensor in use can produce drift error, if service time is longer, drift error can influence writes precision, here after writing input detector for hand 3 detects the infrared light spot of luminous electron pen 1 or luminous electron blackboard eraser 2, by calculating the coordinate that can obtain luminous point, utilize the coordinates computed that this coordinate that can not drift about just can the correction of movement sensor, thereby realize the correction of sensor coordinates computed.

Described writing input detector for hand 3 also needs to determine effectively to write the zone before normal the use.

Concrete, before not determining effectively to write the zone, the mode of operation of system also is in init state, also can be described as the verification state, this moment, described luminous electron pen 1 can be started to write writing regional approximate center zone, after having judged the electronic pen duty, the LED of luminous electron pen 1 enters permanent bright state by blink states, writing input detector for hand 3 obtains the positional information of luminous point, determine approximate center and write edge coordinate, when sensing margin is write in the arrival of luminous electron pen, because detected coordinate figure is incomplete, invalid coordinates that Here it is, this moment, hand-written pick-up unit hair side edge information and effective coordinate were before given described receiver, and LED does to lose efficacy and glimmers on the while luminous electron pen 1; If the edge of writing that luminous electron pen 1 is determined is not a sensing margin, then the coordinate farthest that arrived of luminous electron pen will be as writing the zone boundary coordinate.After the boundary coordinate on four limits is determined, effectively write the zone and just determined;

Described receiver 4 is effectively write the zone by what writing input detector for hand was determined in computing, and the effective coverage is sent to main control system 5, and main control system 5 forms effective mapping in inside.

Description by the foregoing description, the present invention has the following advantages: adopt the present invention, the optical alignment sensor only is used to detect the luminous electron pen or whether the luminous electron blackboard eraser enters the monitored area, plane, determine the scope of writing, and the coordinate that provides its internal motion sensor error to proofread and correct for luminous electron light pen or blackboard eraser.And carry out obtaining of motion trace data by the motion sensor of described luminous electron pen or luminous electron blackboard eraser inside, therefore described motion trace data obtain the influence that can't be subjected to dust or particle, thereby simple, convenient, realized the input of user's hand-written information and wiping of corresponding information accurately.Because motion sensor comprises one or more combinations in acceleration transducer, gyroscope and the magnetometer, therefore the motion sensor vibration information that can not only provide the first stroke of a Chinese character to start to write can also provide handwriting trace to follow the tracks of, and does the requirement of high-speed, high precision location to the precision and the speed of cmos sensor thereby significantly alleviated independent use cmos sensor.Because the track that motion sensor provides is again continuous, therefore can accurately judge the moving region of different luminous electron pens or electronics blackboard eraser again, thereby judge the position and the track of many pens, again by the cycle detection of CMOS to different luminous electron pens or electronics blackboard eraser, again can between or provide reference coordinate for luminous electron pen or blackboard eraser, thereby, reduce requirement that infrared ray is disturbed and to the track following requirement of many pens for motion sensor provides the correction of track drift error.The scope of writing is determined and the error correction of motion sensor because cmos sensor is only done, therefore also reduced and set up, proofreaied and correct the difficulty that cmos sensor causes, reduced cost, and improve the input of user's hand-written information and accuracy and the speed that corresponding information is wiped, because the precision of motion sensor and arithmetic speed will be much higher than cmos sensor.Owing to used the vibration judgement and the track following technology of CMOS location technology and motion sensor simultaneously, multiple outside infrared ray interference problem, a many luminous electron interference problem have been solved, and start to write decision problem, each luminous electron pen or electronics blackboard eraser of positioning track drifting problem, the first stroke of a Chinese character enters the decision problem of effectively writing the zone etc., therefore guaranteeing all to have obtained unprecedented lifting at cost and aspect of performance under the situation that many electronics light pens and electronics blackboard eraser use simultaneously.The present invention is not owing to need the resilient membrane of conducting layer of special employing in the resistance pressure-sensitive electronic whiteboard to cover on the conductive layer of a rigidity and special blank zone, applicable to as on the various common plate faces such as glass, normal blackboard, conference table, and adopt mass-produced in the market miniaturization, cost CMOS optical alignment sensor and acceleration transducer, gyroscope and magnetometer low, low in energy consumption, reduce the cost of electronic whiteboard, helped popularizing of electronic whiteboard.In addition, between the corresponding illuminants part can use as required or flicker pattern or work flicker pattern, reduced power consumption.

For clearer explanation the present invention, below relevant apparatus of the present invention is carried out corresponding introduction.

Fig. 4 is that the structure of the writing input detector for hand of the embodiment of the invention is formed synoptic diagram.Described writing input detector for hand can be writing input detector for hand shown in Figure 33, and as shown in Figure 4, described writing input detector for hand comprises: optical alignment sensor 31, and processing unit 32, notification unit 33, wherein,

Whether described optical alignment sensor 31 is used for detecting and exists luminous point to enter the monitored area, plane, and when detecting when existing luminous point to enter monitored area, described plane, obtains the positional information of described luminous point.Described optical alignment sensor 31 can be CMOS optical alignment sensor, and comprises two at least, is respectively applied for the positional information of obtaining both direction.

Concrete, can on two limits that become special angle on the monitored areas, plane such as corresponding blank or blackboard, described optical alignment sensor 31 be installed respectively, also can be as required on the four edges of monitored area, described plane or described optical alignment sensor 31 only is installed on the diagonal angle of monitored area, described plane.

Described processing unit 32 is used for calculating the coordinate information of the described luminous point of acquisition in monitored area, described plane by the described positional information that described optical alignment sensor 31 is obtained.

Concrete, described processing unit 32 can be a single-chip microcomputer, described positional information is carried out component calculating can get access to corresponding coordinate information.

Notification unit 33 is used for sending trigger message and described coordinate informations when detecting when existing luminous point to enter monitored area, described plane to receiver 4.

Concrete, described notification unit 33 can pass through bluetooth, purple honeybee or other low-power consumption short-distance wireless radio-frequency receiving-transmitting mode, sends trigger message and positional information to described receiver 4.

Fig. 5 is that the structure of the receiver of the embodiment of the invention is formed synoptic diagram.Described receiver can be the receiver among Fig. 34, and as shown in Figure 5, described receiver comprises: Transmit-Receive Unit 41, and processing unit 42, judging unit 43, wherein,

Described Transmit-Receive Unit 41 is used to preset planar obit simulation data and operational order that luminescent device sensing that the number information of at least one luminescent device, the trigger message that receives writing input detector for hand and coordinate information, reception produce luminous point obtains;

Processing unit 42 is discerned the type that enters the luminescent device in the monitored area, described plane according to described number information and described coordinate information, and the type of described luminescent device comprises: write type and wipe type;

Described Transmit-Receive Unit 41 also is used for the number information according at least one luminescent device of presetting, successively to the corresponding illuminants part send described control information with the luminescent device of controlling the described luminous point of described generation by or the flicker mode switch be work flicker pattern; Also be used to judge the validity of coordinate information, and produce the coordinate of proofreading and correct luminescent device internal motion sensor error according to coordinate information.Also be used to judge the validity of the coordinate information of receiving, and effectively write the zone, and the effective coverage is sent to main control system with what this determined writing input detector for hand so that described main control system within it portion form effective mapping;

Described processing unit 41 also utilizes the coordinate information of receiving, produces to proofread and correct the coordinate of writing the luminescent device internal motion sensor error in the zone.

Judging unit 43 is used to judge whether the luminescent device that produces luminous point is in running order.

Concrete, described judging unit 43 is according to described trigger message, judge whether to receive the vibration data of luminescent device transmission and whether in described luminescent device, get access to motion trace data, judge with this whether the luminescent device that produces described luminous point is in running order.

According to the number information that presets, described Transmit-Receive Unit 41 generates corresponding control information, to described luminous electron pen 1 or luminous electron blackboard eraser 2 send control information with control described luminous electron pen 1 or luminous electron blackboard eraser 2 by or the flicker mode switch be work flicker pattern, and according to the described coordinate information that receives, identify when the pairing numbering of luminescent device that advances into the monitored area, plane, thereby identify described type when the luminescent device that advances into the monitored area, plane according to described numbering.

Wherein, the process of differentiating the type of described luminescent device is: with the luminous electron blackboard eraser different numberings is set for corresponding luminous electron pen in advance, for example the numbering of first the luminous electron pen numbering that is set to 1.1, second luminous electron pens is set to 1.2, by that analogy, the numbering that the numbering of first luminous electron blackboard eraser is set to 2.1, second luminous electron blackboard erasers is set to 2.2, and numbering that will be separately sends to described receiver and stores.User this moment will write by being numbered 1.2 luminous electron pen, corresponding optical alignment sensor at first sends control information to the luminescent device that is numbered 1.1 according to number information to trigger described Transmit-Receive Unit 41 to described Transmit-Receive Unit 41 transmission trigger messages after having luminescent device to enter the monitored area, plane, described be numbered 1.1 luminescent device according to described control information with self light-emitting mode by or the flicker mode switch be work flicker pattern, at this moment, because the luminous point of described optical alignment sensor sensing is to be numbered 1.2 luminous electron pen to send, therefore, the coordinate information that writing input detector for hand gets access to does not change, luminous point is discontinuous, hence one can see that for described receiver, when what advance into the monitored area, plane is not to be luminous electron pen 1.1, then described receiver sends control information to the luminescent device of luminous electron pen 1.2 successively, described be numbered 1.2 luminescent device according to described control information with self light-emitting mode by or the flicker mode switch be work flicker pattern, described optical alignment sensor will sense continuous luminous point this moment, described receiver 4 can judge in view of the above that just the luminescent device that identifies when advancing in the monitored area, described plane is to be in to write the zone, and determines the type of luminescent device by numbering.Vibration data when simultaneously, described judging unit 43 is according to the motion trace data of the described luminous electron pen that obtains and special vibration can confirm that just this moment described luminous electron pen is in running order.Behind intact all luminescent devices of cycle detection, all the other do not have the luminescent device of special vibration data can continue to preserve holding state.Described Transmit-Receive Unit 41 can send control information to the luminescent device that remaining does not enter in the monitored area, described plane according to number information so that the light-emitting mode of luminescent devices such as corresponding luminous electron pen or luminous electron blackboard eraser still be between or light-emitting mode.

When described receiver gets access to motion trace data and judges the type of luminescent device, after confirming that simultaneously described luminescent device is in running order, the main control system that is connected with described receiver just can carry out the processing of wiping of obtaining of corresponding hand-written information or hand-written information according to the motion trace data that described receiver receives.

Concrete, described main control system comprises: the hand-written information processing unit, be used for the type that identifies when receiver when writing type, and the operational order and the plane track data that receive according to described receiver obtain handwritten input information; Or be used for the type that identifies when receiver when wiping type, the corresponding handwritten input information of planar obit simulation data erase that receives according to described receiver.

Described hand-written information processing unit can adopt restoring operation that default software carries out corresponding literal or image to obtain handwritten input information, perhaps carries out the erase operation of corresponding literal or image.

In addition, described luminous electron pen or described luminous electron blackboard eraser in the present embodiment comprise: luminescent device, and motion sensor, the sense data processing unit, wireless transmit/receive units, control module and operational order generation unit, wherein,

Described luminescent device is used to launch required luminous point, for example infrared light etc.

Described motion sensor, be used for the motion sensing data of described luminous electron pen of sensing or described luminous electron blackboard eraser self, and the vibration data when being used for the described luminous electron pen of sensing or described luminous electron blackboard eraser self and contacting with monitored area, described plane; Described motion sensor comprises: acceleration transducer and/or gyroscope and magnetometer, the described motion sensing data that obtain comprise: acceleration information and/or gyroscope and magnetometer data.In described luminous electron pen or luminous electron blackboard eraser and monitored area, the described plane contact process, can produce special vibration, acceleration transducer senses described special vibration, thereby obtains corresponding vibration data.Described vibration data is sent to receiver, can make described receiver according to trigger message and described vibration data, judge the first stroke of a Chinese character of luminous electron pen exactly or start to write, the luminous electron blackboard eraser begins the work of wiping or work is wiped in end, thereby the CMOS optical alignment sensor of avoiding outside some other interference luminous point to have influence on described hand input device 3 makes it produce erroneous judgement, thereby generates unnecessary input information.

Described sense data processing unit is used for calculating motion trace data according to described sense data; Described acceleration information and/or gyroscope and magnetometer data are carried out twice integration can obtain straight-line displacement and/or angular displacement, can obtain corresponding coordinate points according to described straight-line displacement and/or angular displacement, connect each coordinate points and can obtain motion trace data.

Described wireless transmit/receive units is used for sending described motion trace data and described vibration data to receiver, and is used to receive the control information that described receiver sends;

Control module, be used for according to the control information that described wireless transmit/receive units receives control described luminescent device by or the flicker mode switch be work flicker pattern; Wherein, the difference of described or flicker pattern and described work flicker pattern is, between or the flicker frequency of flicker pattern be lower than the frequency of described work flicker pattern, between carrying out or the effect of the switching of flicker pattern and described work flicker pattern be: save electric energy, and the type that makes things convenient for the luminescent device of receiver identification in the monitored area, plane that advance into electronic whiteboard.

The operational order generation unit is used for the generating run order; Described operational order is the user by the usefulness of button setting so that main control system when the obtaining of literal or image, carries out accordingly the format analysis processing as forms such as font size or colors.

For the verification of the drift error of luminescent device internal motion sensor with effectively write determining as mentioned above of zone, do not giving unnecessary details here;

Described Transmit-Receive Unit also is used for sending described operational order to described receiver;

Described Transmit-Receive Unit can be formed for bluetooth, purple honeybee or other low-power consumption short-distance wireless radio-frequency (RF) receiving/transmission device.

For clearer explanation the present invention, below multi-input large-area writing method of the present invention is described in detail.

Fig. 6 is the schematic flow sheet of multi-input large-area writing method first embodiment of the present invention.As shown in Figure 6, this method comprises:

S601: whether the writing input detector for hand detection exists luminous point to enter the monitored area, plane.

Concrete, can adopt CMOS optical alignment sensor whether to exist luminous point to enter the monitored area, plane.

S602:, send trigger message to receiver when detecting when existing luminous point to enter monitored area, described plane.

Concrete, when detecting when existing luminous point to enter monitored area, described plane, send trigger message to described receiver by bluetooth, purple honeybee or other low-power consumption short-distance wireless radio-frequency receiving-transmitting mode.

S603: described receiver is according to described trigger message, obtains the motion trace data that the luminescent device that produces described luminous point senses, and described motion trace data is obtained by the motion sensing unit senses of described luminescent device inside.

Concrete, behind the trigger message that receives the writing input detector for hand transmission, obtain the luminous electron pen in the frontal plane monitored area or the motion trace data of luminous electron blackboard eraser, described motion trace data is that the motion sensing unit senses in described luminous electron pen or the luminous electron blackboard eraser obtains, wherein, the step that described motion sensing unit senses obtains described motion trace data is: the acceleration sensing data and/or gyroscope and the magnetometer sense data that obtain described luminous electron pen or luminous electron blackboard eraser by acceleration transducer and/or gyroscope and magnetometer, can obtain the coordinate figure data of described luminous electron pen or luminous electron blackboard eraser according to described acceleration sensing data and/or gyroscope and magnetometer sense data, when the user moves described luminous electron pen or luminous electron blackboard eraser, described motion sensing unit can access a series of coordinate figure data, can obtain the motion trace data of described luminous electron pen or luminous electron blackboard eraser according to described a series of coordinate figure data.

S604: the motion trace data that main control system gets access to according to described receiver is carried out the processing of wiping of obtaining of hand-written information or hand-written information.

Concrete, when be luminous electron, described main control system reduces according to described motion trace data and obtains hand-written informations such as corresponding literal or picture, and stores described literal or picture; When being the luminous electron blackboard eraser, described main control system is wiped processing according to described motion trace data to the handwritten input information of relevant position, promptly deletes the literal or the picture of respective stored.

Fig. 7 is the schematic flow sheet of multi-input large-area writing method second embodiment of the present invention.As shown in Figure 7, this method comprises:

S701: whether the writing input detector for hand detection exists luminous point to enter the monitored area, plane.

Concrete, produce the luminescent device that described luminous point is luminous electron pen or luminous electron blackboard eraser.Whether described writing input detector for hand can detect by optical alignment sensors such as CMOS has luminous point to enter the monitored area, plane, and whether promptly detect has luminous electron pen or luminous electron blackboard eraser to enter the monitored area, plane.And detect when existing luminous point to enter the monitored area, plane when described writing input detector for hand, send trigger message, execution in step S702, otherwise continue execution in step S701.

S702: described receiver judges whether to receive the vibration data of the luminescent device that produces luminous point and the motion trace data that gets access to described luminescent device, and whether detect the luminescent device that produces luminous point with this in running order;

Concrete, when receiving described trigger message, hence one can see that has luminous point to enter the monitored area, plane for described receiver, but, in this case, the user may be just with the luminous electron pen that produces described luminous point near monitored area, described plane, and do not start to write and promptly do not write, thereby perhaps be that the CMOS optical alignment sensor that outside some other interference luminous point has influence on described hand input device makes it produce erroneous judgement at this moment.

Therefore, when the trigger message that sends when existing luminous point to enter the monitored area, plane that described receiver receives that described writing input detector for hand sends, described receiver needs also to judge whether the user starts to write promptly whether enter the duty of writing this moment, its deterministic process is: when described luminous electron pen touch monitored area, described plane and the process of writing in, described luminous electron pen all can produce special vibration, the acceleration transducer that is arranged at described luminous electron pen inside can sense described special vibration, and the generation vibration data sends to described receiver, if described receiver receives described vibration data and gets access to the motion trace data of described luminous electron pen, just can judge the duty that this moment, the luminous electron pen was write in view of the above.

The mode of the motion trace data synchronised that adopts CMOS optical alignment sensor sensing luminous point and described acceleration transducer sense vibrations and get access to, can enter the monitored area, plane to the luminous electron pen accurately or leave the monitored area, plane and judge, the luminous point of avoiding being produced by other luminous objects is to the first stroke of a Chinese character that influence brought of CMOS optical alignment sensor or the erroneous judgement of starting to write.Equally, also can reach same effect to the luminous electron blackboard eraser.

When being judged as when being, execution in step S703, otherwise, continue execution in step S702.

S703: writing input detector for hand calculates the coordinate information that obtains described luminous point by the described positional information that described optical alignment sensor is obtained, described receiver is according to the number information of the luminescent device that presets, send control information to the pairing luminescent device of described number information so that the corresponding illuminants part by flicker frequency lower between or the flicker mode switch be the bigger work of flicker frequency flicker pattern.

Concrete, adopt at least two CMOS optical alignment sensors to obtain the positional information of luminous point in monitored area, described plane that described luminous electron pen or luminous electron blackboard eraser are sent respectively, calculate by described positional information being carried out component, just can obtain the coordinate information of described luminous point.

S704: described receiver obtains the motion trace data that the motion sensing unit senses of the luminescent device inside that produces described luminous point arrives.

Concrete, produce described luminous point luminescent device inside the motion sensing unit senses to the step of motion trace data comprise: can be by the motion sensing data of acceleration transducer and/or gyroscope and pairing luminous electron pen of the described luminescent device of magnetometer sensing or luminous electron blackboard eraser self, the described motion sensing data that obtain comprise: acceleration information and/or gyroscope and magnetometer data, and described acceleration information and/or gyroscope and magnetometer data are carried out twice integration can obtain straight-line displacement and/or angular displacement, can obtain corresponding coordinate points according to described straight-line displacement and/or angular displacement, connect each coordinate points and can obtain motion trace data.

S705: the coordinate information of the described luminous point that described receiver obtains according to described writing input detector for hand, the numbering that identification enters the luminescent device in the monitored area, described plane, and according to the described type that enters the luminescent device in the monitored area, plane of described numbering identification, the type of described luminescent device comprises: write type and wipe type.

Concrete, since or the flicker pattern under and under the work flicker pattern, the luminescent device glow frequency difference of luminous electron pen or luminous electron blackboard eraser, it is discontinuous and continuous two kinds of coordinate informations that writing input detector for hand described in the step S702 detects the luminous point that obtains, described writing input detector for hand obtains and sends in the positional information of described receiver, described receiver in view of the above and the numbering of the luminescent device of receiving just can judge and identify when advancing into the type of the luminescent device in the monitored area, described plane.After identifying the type that enters the luminescent device in the monitored area, described plane, described receiver also can according to number information to remaining luminescent device send control information so that in corresponding luminous electron pen or the luminous electron blackboard eraser light-emitting mode of luminescent device still be between or the flicker pattern.。

S706: if described receiver identify enter the luminescent device in the monitored area, described plane type for writing type, main control system obtains handwritten input information according to the motion trace data that described receiver gets access to; If described receiver identify enter the luminescent device in the monitored area, described plane type for wiping type, main control system is wiped handwritten input information according to the motion trace data that described receiver gets access to.

Concrete, described receiver can be reduced to corresponding literal or image with the motion trace data of described luminous electron pen by corresponding process software, and stores described literal or image; Motion trace data according to described luminous electron blackboard eraser is carried out wiping of corresponding literal or image, promptly deletes the literal or the image of respective stored.Described receiver can adopt present existing all kinds of related softwares to carry out the reduction of literal or image, and perhaps literal or image wipes.

The motion trace data that main control system gets access to according to described receiver carry out obtaining of hand-written information or hand-written information wipe processing before, also comprise:

In addition, before execution in step S701, the user can also be as required, select forms such as the font of described input information or font color by the mode of button, the luminous electron pen is correspondingly to described receiver transmit operation order, so that described main control system carries out corresponding format analysis processing according to the operational order that described receiver receives to literal or the image that reduces.

Description by the foregoing description, the present invention has the following advantages: the optical alignment sensor only is used to detect the luminous electron pen or whether the luminous electron blackboard eraser enters the monitored area, plane, determine the scope of writing, and the coordinate that provides its internal motion sensor error to proofread and correct for luminous electron light pen or blackboard eraser.And carry out obtaining of motion trace data by the motion sensor of described luminous electron pen or luminous electron blackboard eraser inside, therefore described motion trace data obtain the influence that can't be subjected to dust or particle, thereby simple, convenient, realized the input of user's hand-written information and wiping of corresponding information accurately.Because motion sensor comprises one or more combinations in acceleration transducer, gyroscope and the magnetometer, therefore the motion sensor vibration information that can not only provide the first stroke of a Chinese character to start to write can also provide handwriting trace to follow the tracks of, and does the requirement of high-speed, high precision location to the precision and the speed of cmos sensor thereby significantly alleviated independent use cmos sensor.Because the track that motion sensor provides is again continuous, therefore can accurately judge the moving region of different luminous electron pens or electronics blackboard eraser again, thereby judge the position and the track of many pens, again by the cycle detection of CMOS to different luminous electron pens or electronics blackboard eraser, again can between or provide reference coordinate for luminous electron pen or blackboard eraser, thereby, reduce requirement that infrared ray is disturbed and to the track following requirement of many pens for motion sensor provides the correction of track drift error.The scope of writing is determined and the error correction of motion sensor because cmos sensor is only done, therefore also reduced and set up, proofreaied and correct the difficulty that cmos sensor causes, reduced cost, and improve the input of user's hand-written information and accuracy and the speed that corresponding information is wiped, because the precision of motion sensor and arithmetic speed will be much higher than cmos sensor.Owing to used the vibration judgement and the track following technology of CMOS location technology and motion sensor simultaneously, multiple outside infrared ray interference problem, a many luminous electron interference problem have been solved, and start to write decision problem, each luminous electron pen or electronics blackboard eraser of positioning track drifting problem, the first stroke of a Chinese character enters the decision problem of effectively writing the zone etc., therefore guaranteeing all to have obtained unprecedented lifting at cost and aspect of performance under the situation that many electronics light pens and electronics blackboard eraser use simultaneously.The present invention is not owing to need the resilient membrane of conducting layer of special employing in the resistance pressure-sensitive electronic whiteboard to cover on the conductive layer of a rigidity and special blank zone, applicable to as on the various common plate faces such as glass, normal blackboard, conference table, and adopt mass-produced in the market miniaturization, cost CMOS optical alignment sensor and acceleration transducer, gyroscope and magnetometer low, low in energy consumption, reduce the cost of electronic whiteboard, helped popularizing of electronic whiteboard.In addition, between the corresponding illuminants part can use as required or flicker pattern or work flicker pattern, reduced power consumption.

Above disclosed only is preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that invention is contained.

Claims

1. a multi-input large-area writing method is characterized in that, comprising:

2. the method for claim 1 is characterized in that, described receiver is according to described trigger message, obtains before the step of the motion trace data that the luminescent device that produces described luminous point senses, and also comprises:

3. method as claimed in claim 2 is characterized in that, whether in running order described receiver detect luminescent device the step that produces described luminous point, comprising:

4. method as claimed in claim 2 is characterized in that, whether in running order described receiver detect before the luminescent device that produces described luminous point the step, also comprises:

5. the method for claim 1 is characterized in that, the motion trace data that main control system gets access to according to described receiver carry out obtaining of hand-written information or hand-written information wipe processing before, also comprise:

6. method as claimed in claim 4 is characterized in that, the motion trace data that described main control system receives according to described receiver is carried out the step of wiping processing of obtaining of hand-written information or hand-written information, comprising:

7. method as claimed in claim 6 is characterized in that, the motion trace data that described main control system receives according to described receiver is carried out wiping before the processing of obtaining of hand-written information or hand-written information, also comprises:

8. as each described method of claim 1-7, it is characterized in that, also comprise:

9. a writing input detector for hand is characterized in that, comprising: CMOS optical alignment sensor, and processing unit, notification unit, wherein,

10. a receiver is characterized in that, comprising:

Processing unit is used for according to described number information and described coordinate information, the type that identification enters the luminescent device in the monitored area, described plane, and the type of described luminescent device comprises: write type and wipe type; Also be used to judge the validity of coordinate information, and produce the coordinate of proofreading and correct luminescent device internal motion sensor error according to coordinate information.

11. receiver as claimed in claim 10 is characterized in that,

Described Transmit-Receive Unit also is used for the number information according at least one luminescent device of presetting, successively to the corresponding illuminants part send described control information with the luminescent device of controlling the described luminous point of described generation by or the flicker mode switch be work flicker pattern;

12. receiver as claimed in claim 9 is characterized in that,

Described processing unit is judged the validity of the coordinate information receive, and effectively writes the zone with what this determined writing input detector for hand, and the effective coverage is sent to main control system so that described main control system within it portion form effective mapping;

Described processing unit also utilizes the coordinate information of receiving, produces to proofread and correct the coordinate of writing the luminescent device internal motion sensor error in the zone.

13. a hand-written input system is characterized in that, comprising:

14. hand-written input system as claimed in claim 13 is characterized in that,

Described writing input detector for hand also is used to obtain the positional information of luminous point, and by described positional information calculation being obtained the coordinate information of described luminous point in monitored area, described plane, and send described coordinate information to described receiver;

Whether described receiver also is used to detect the luminescent device that produces described luminous point in running order, and according at least one number information that presets, successively to and the corresponding luminescent device of described number information send control information with control corresponding illuminants part by or the flicker mode switch be work flicker pattern, and the numbering that identification enters the luminescent device in the monitored area, described plane according to the coordinate information of described writing input detector for hand, according to the quantity of the luminescent device of described type that enters the luminescent device in the monitored area, plane of described numbering identification and present use; Also be used to judge the validity of the coordinate information of receiving, and effectively write the zone, and the effective coverage is sent to main control system, form effectively mapping in that main control system is inner with what this determined writing input detector for hand; Described receiver produces and proofreaies and correct the coordinate of writing the luminescent device internal motion sensor error in the zone also according to the coordinate information of receiving.

15. system as claimed in claim 13 is characterized in that, described luminous electron pen or described luminous electron blackboard eraser comprise: luminescent device, and motion sensor, the sense data processing unit, wireless transmit/receive units, control module, wherein,

16. system as claimed in claim 13 is characterized in that,

Described luminous electron pen or luminous electron blackboard eraser further comprise:

The operational order generation unit is used for the generating run order;