JP2016029531A - Touch input system and display terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display terminal that prevents malfunction when a plurality of touch pens are used.SOLUTION: A processing that is executed by a control part of a display terminal capable of receiving a plurality of touch inputs includes a step of, when the writing pressure newly acquired from a touch panel matches the writing pressure associated with a touch ID stored in a memory (YES in step S540), managing writing pressure information in association with the touch ID as a history (S560); and a step of, when these writing pressures do not match with each other (NO in step S540) and the writing pressure of another touch ID matches the acquired writing pressure (step S550), replacing information on a pen ID that has been associated with the touch ID to correct the history (S555).SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to touch input control, and more particularly to input using a plurality of touch pens.

  A technique for drawing on a touch panel using a touch pen such as an electronic pen is known. For example, Japanese Patent Application Laid-Open No. 2011-145663 (Patent Document 1) discloses a technique for “allowing a user to switch and use attributes of each of a plurality of electronic pens as needed”. (See [Problem] in [Summary]). According to the technology, “the electronic pen 1 includes a rotary operation switch 44 that allows the user to select an attribute, and sends the pen information to which the attribute information selected by the operation switch and its own identification information are added to the control device. The control device displays an image corresponding to the attribute information acquired from the pen information received from the electronic pen on the display device ”(see [Solution] in [Summary]).

JP 2011-145663 A

  According to the technique disclosed in Patent Document 1, an ID is transmitted from the pen to the control unit at the timing of the start point and end point of the pen locus, and the attributes (such as pen color) are distinguished. In such a configuration, when a plurality of contact points (touch coordinates) collide (match or approach), the touch ID on the touch panel is switched, for example, the colors between the pens are reversed, etc. There is a possibility of malfunction. Therefore, there is a need for a technique that prevents malfunction.

  This indication is made in order to solve the above-mentioned problem, and the objective in a certain situation is to provide the touch input system by which the malfunctioning in a display terminal is prevented at the time of use of a plurality of touch pens. The objective in another situation is to provide the display terminal by which the malfunctioning in a display terminal is prevented at the time of use of a some touch pen.

  According to one embodiment, a touch input system is provided. The touch input system includes a plurality of touch pens and a display terminal that performs display in response to a touch by each of the plurality of touch pens. The display terminal is configured to detect a touch panel that receives a touch input from each of the plurality of touch pens, a display unit configured to perform display according to the touch input, and a writing pressure of the touch pen with respect to the touch panel. A detection unit configured as described above, pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen A memory for storing, and a control unit for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information.

  According to another embodiment, a display terminal is provided. The display terminal receives a touch input from each of a plurality of touch pens, a display unit configured to perform display according to each touch input, and detects a pen pressure of the touch pen with respect to the touch panel. Stores a configured detection unit, pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen And a control unit for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information.

According to an aspect, a malfunction in the display terminal can be prevented when the touch pen is used.
The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

FIG. 2 is a diagram conceptually showing a configuration of a touch input system using a touch pen 400. It is a figure showing the aspect in which touch ID is replaced, and the aspect which is not interchanged when multi-touch is performed. 3 is a block diagram showing a hardware configuration of touch panel 110. FIG. 4 is a diagram illustrating a state in which touch pens 401 and 402 are touching display terminal 100. FIG. It is a flowchart showing a part of process which CPU330 performs. It is a flowchart showing a part of process which CPU330 performs. It is a flowchart showing a part of process which CPU330 performs. It is a flowchart showing a part of process which CPU330 performs. 6 is a diagram illustrating an example of a warning displayed when drawing with a plurality of touch pens is performed on the display device 120. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[First Embodiment]
<Outline of system configuration>
With reference to FIG. 1, the outline | summary of the touch input system which concerns on 1st Embodiment is demonstrated. FIG. 1 is a diagram conceptually showing the configuration of a touch input system using a touch pen 400. The touch input system includes a software area and a hardware area. The software area includes an application layer 130, software 131, an OS (Operating System) 140, a kernel layer 150, a driver layer touch panel control unit 160, and a driver layer display control unit 170.

  The hardware area includes the touch panel 110 and the display device 120. The touch panel 110 and the display device 120 constitute the display terminal 100.

(Single touch)
In a certain aspect, when a touch operation with one touch pen 400, that is, a single touch is performed, for example, the following processing is executed. In step S1, the touch panel 110 detects a touch on the touch panel 110 with the touch pen 400, and acquires coordinate data x, y (111, 123) of the touch position. In step S2, the display terminal 100 transmits the coordinate data (111, 123) of the detected touch position to the driver layer touch panel control unit 160 in the software area. In step 3, the driver layer touch panel control unit 160 assigns the touch ID (= 1) to the coordinate data (111, 123). In step S4, the touch panel control unit 160 transmits touch data (ID: 0, X: 111, Y: 123) to software 131 (for example, drawing software) of the application layer 130. Steps 2 to 4 are repeated until the touch pen 400 leaves the touch panel 110, and periodically, touch data (touch ID, touch coordinates) is transmitted from the touch panel 110 to the driver layer touch panel control unit 160 to the application layer 130. .

(For multi-touch)
In another aspect, a plurality of touch operations, so-called multi-touch, may be performed simultaneously. As an example, when touch operations with a plurality of touch pens are performed on the touch panel 110, the touch panel 110 has a plurality of touch points. At this time, the touch panel 110 acquires two coordinate data (111, 123) and (333, 345) in response to the multi-touch (step S1), and transmits each coordinate data to the driver layer touch panel control unit 160. (Step S2). The driver layer touch panel control unit 160 assigns a touch ID (eg, 0, 1) to each coordinate data. Touch IDs are basically assigned in the order in which touches are detected. The driver layer touch panel control unit 160 sequentially generates the touch IDs so that the touch IDs are not switched while monitoring the coordinate values of the touches on the touch panel 110 until the touches on the touch panel 110 are canceled, Each is given to coordinate data (step S3). The driver layer touch panel control unit 160 transmits each touch data (ID: 0, x: 111, Y: 123), (ID: 1, X: 333, Y: 345) to the application layer 130.

<Change of touch ID>
As described with reference to FIG. 1, when multi-touch is performed, the touch panel 110 specifies each touch position, acquires touch coordinates, and transmits the touch coordinates to the driver layer touch panel control unit 160. However, for example, when the touch positions are close to each other, the acquired touch coordinate value may not be correctly processed by the driver layer touch panel control unit 160 in relation to the touch ID. Further, depending on the specifications of the software for realizing the driver layer touch panel control unit 160, each touch ID may not be accurately assigned to each touch coordinate, and may be given to the touch coordinates in a state where each touch ID is replaced. obtain.

  Therefore, the replacement of the touch ID will be described with reference to FIG. FIG. 2 is a diagram illustrating a mode in which touch IDs are switched and a mode in which touch IDs are not switched when multi-touch is performed.

  In one aspect 210 when multi-touch is performed, the driver layer touch panel control unit 160 causes the coordinate 1 and the coordinate 2 including a series of continuous touch positions to intersect each other only when the touch positions are close to each other. Judge that it is not. In another mode 220 in another aspect where multi-touch is performed, the driver layer touch panel control unit 160 determines that the coordinate 1 and the coordinate 2 intersect each other.

<Hardware configuration>
With reference to FIG. 3, a configuration of touch panel 110 according to the present exemplary embodiment will be described. FIG. 3 is a block diagram illustrating a hardware configuration of touch panel 110. Touch panel 110 includes an input unit 310, a control unit 320, and a display unit 360.

  Input unit 310 includes a wireless data receiving unit 311 and a touch panel control unit 312. The wireless data receiving unit 311 receives a signal transmitted by the touch pen 400. The touch panel control unit 312 detects a touch on the touch panel 110 with the touch pen 400 and acquires a coordinate value at which the touch is performed. The touch panel control unit 312 detects the writing pressure of the touch pen 400 on the touch panel 110.

The control unit 320 includes a CPU 330, a memory 340, and a program 350.
The CPU 330 executes instructions and controls the operation of the display terminal 100. The memory 340 holds data and a program for controlling the operation of the display terminal 100, data generated by the CPU 330, and data input to the display terminal 100. The memory 340 may be realized by a flash memory or other nonvolatile memory and a RAM (Random Access Memory or other volatile memory).

  The display unit 360 includes the display device 120. The display device 120 is realized by a liquid crystal monitor, an organic EL (Electro Luminescence) monitor, or the like.

  The program 350 includes a touch control unit 351, a pen attribute management unit 352, and a pen determination drawing processing unit 353. The touch control unit 351, the pen attribute management unit 352, and the pen determination drawing processing unit 353 are realized by the CPU 330 executing instructions included in the program 350, respectively.

  Based on the touch operation with the touch pen 400, the touch control unit 351 controls a drawing process and other processes in the display device 120, which are predefined according to the touch operation.

  In one aspect, the touch control unit 351 manages pen attributes. For example, the touch control unit 351 manages line type, thickness, color, display mode (blinking, continuous display, etc.) and other drawing attribute information when drawing with the touch pen 400 is performed. More specifically, in one aspect, the touch control unit 351 holds attribute information associated with the pen ID of the touch pen 400 in the memory 340. In another aspect, in response to the touch operation of the touch pen 400, the touch control unit 351 reads the attribute information from the memory 340, and uses the read information as information for drawing on the display device 120 for pen determination / drawing processing. The data is sent to the unit 353.

  In another aspect, touch control unit 351 generates a touch ID in accordance with a predetermined generation criterion in response to detection that touch panel 110 is touched with touch pen 400 (touch DOWN). For example, the touch control unit 351 can individually generate a touch ID for each of the plurality of touch pens based on a certain generation criterion. The touch control unit 351 can generate a series of touch IDs for a plurality of touch pens based on another generation criterion.

  In another aspect, the touch control unit 351 detects the writing pressure when the touch operation on the touch panel 110 by the touch pen 400 is performed. The method for detecting the writing pressure is not particularly limited.

  The pen determination / drawing processing unit 353 identifies a touch pen that is touching the touch panel 110 and executes a drawing process in the display device 120 using attribute information associated with the pen ID of the touch pen.

<Pen configuration>
With reference to FIG. 4, the structure of the touch pen according to the present embodiment will be described. FIG. 4 is a diagram illustrating a state where touch pens 401 and 402 are touching display terminal 100. When collectively referred to, the touch pen 400 is used. The touch pen 400 includes a rechargeable battery 410, a wireless device 420, an attribute information transmission unit 430, a control unit 440, and an attribute information storage unit 450.

The rechargeable battery 410 supplies power to the touch pen 400.
The wireless device 420 communicates with the display terminal 100 wirelessly. The mode of wireless communication is, for example, Bluetooth (registered trademark), Zigbee (registered trademark), or the like, but is not limited thereto, and any method capable of short-range wireless communication may be used. Further, in another aspect, a configuration in which the touch pen 400 and the display terminal 100 are wired and communicated by a cable may be used. Furthermore, in another aspect, the configuration may be such that information on the touch pen 400 is preliminarily input to the display terminal 100 and registered using a software keyboard (not shown) or other input device as necessary.

  The attribute information transmission unit 430 transmits drawing attribute information (line type, thickness, color, display mode, etc.) of the touch pen 400 stored in the attribute information storage unit 450 via the wireless device 420.

  The control unit 440 controls the operation of the touch pen 400. The control unit 440 is realized by a microcontroller, for example. In one aspect, the control unit 440 turns on the power in response to pressing of a switch (not shown) of the touch pen 400, and switches the state of the touch pen 400 to a state of waiting for a touch operation on the touch panel 110 of the display terminal 100. The control unit 440 further establishes communication between the touch pen 400 and the display terminal 100. In another aspect, the control unit 440 sends a command to the attribute information transmission unit 430 to transmit pen identification information and drawing attribute information of the touch pen 400 to the display terminal 100 via the wireless device 420.

  The attribute information storage unit 450 holds attribute information (for example, pen identification information, drawing attribute information, etc.) associated with the touch pen 400. The attribute information storage unit 450 is realized by a flash memory, for example.

<Control structure>
With reference to FIG. 5, the control structure of display terminal 100 according to the first embodiment will be described. FIG. 5 is a flowchart showing a part of processing executed by CPU 330.

The gist of the technical idea according to the present embodiment is as follows when shown as a processing flow.
(Process A1) When the touch panel 110 detects a touch-down event, the touch panel 110 simultaneously receives the pen ID transmitted from the touch pen 400, associates the touch ID generated on the touch panel 110 with the pen ID, and stores the memory 340. To store.
(Processing A2) The control unit 320 detects the pen pressure detected by the touch panel control unit 312 until it detects a touch release event based on a signal from the touch panel control unit 312 (also referred to as pen pressure value or writing pressure information as appropriate). ) And the touch ID are associated and stored in the memory 340.
(Process A3) When the control unit 320 receives the latest pen ID from the touch pen 400 via the wireless data reception unit 311 and receives the pen pressure value from the touch panel control unit 312, the control unit 320 refers to the memory 340, Check the history of past pen pressure values.
(Process A4) If the control unit 320 determines that the pen pressure value sent from the touch panel control unit 312 is the same as the pen pressure value held in the memory 340 as a result of the check, the data is added to the history as it is. Then, based on the drawing attribute information assigned to the pen ID, the image is displayed on the display device 120 while setting the color and thickness of the diagram.
(Process A5) On the other hand, when it is determined that the writing pressures are different, the control unit 320 searches for a writing pressure value from the past history. Specifically, the control unit 320 searches for a pen pressure value associated with another touch ID stored in the memory 340.
(Process A6) When the touch ID associated with the writing pressure is retrieved, the control unit 320 corrects the association between the pen ID and the received touch ID, and associates the pen ID with the retrieved touch ID. .

  Referring to FIG. 5, in step S <b> 510, CPU 310 of display terminal 100 determines whether a touch UP event (touch end) has been detected based on an output from touch panel control unit 312. When CPU 330 determines that a touch-up event has been detected (YES in step S510), control is switched to step S515. If not (NO in step S510), CPU 330 switches control to step S520.

  In step S515, if the association information (step S525) and the pen pressure history (step S560) with the pen ID exist, the CPU 330 deletes the association information and the pen pressure history. Thereafter, control is returned to step S510.

  In step S520, CPU 330 determines whether a touch DOWN event (touch start) is detected based on a signal from touch panel control unit 312. For example, when a writing pressure equal to or higher than a predetermined value is detected at a certain coordinate value, the CPU 330 determines that a touch DOWN event has been detected. When CPU 330 determines that a touch DOWN event has been detected (YES in step S520), CPU 330 switches control to S525. If not (NO in step S520), CPU 330 switches control to step S530.

  In step S530, CPU 330 determines whether a touch MOVE event (touch continuation) has been detected. For example, when a writing pressure equal to or higher than a predetermined value is detected at a plurality of positions, the CPU 330 determines that a touch MOVE event has been detected. When CPU 330 determines that a touch MOVE event has been detected (YES in step S530), CPU 330 switches control to step S535. If not (NO in step S530), CPU 330 returns control to step S510.

  In step S <b> 535, CPU 330 obtains writing pressure information (writing pressure value) from touch panel 110 via touch panel control unit 312.

  In step S540, CPU 330 determines whether or not the pen pressure newly acquired from touch panel 110 matches the pen pressure associated with the touch ID stored in memory 340. When CPU 330 determines that these writing pressures match (YES in step S540), control is switched to step S560. If not (NO in step S540), CPU 330 switches control to step S545.

  In step S545, CPU 330 determines that the tendency of writing pressure on touch panel 110 has changed, and checks the writing pressure history of another touch ID. Specifically, in step S550, CPU 330 determines whether or not there is a writing pressure in memory 340 that matches the acquired writing pressure. When CPU 330 determines that such writing pressure is in memory 340 (YES in step S550), CPU 330 switches control to step S555. If not (NO in step S550), CPU 330 switches control to step S560.

  In step S560, CPU 330 associates the writing pressure acquired in step S535 with the touch ID, and stores them in memory 340 as a new history.

  In step S565, in response to a touch operation using the touch pen 400, the CPU 330 draws on the display device 120 using the drawing attribute information (color, line width, etc.) of the pen ID associated with the touch ID.

  As described above, according to the present embodiment, while the touch pen 400 is touching the touch panel 110, the control unit 320 performs the writing pressure information (writing pressure) at the point where each of the touch pens 401 and 402 is touching. Value) regularly. Even if the same value is acquired as the coordinate values of the two touch pens 401 and 402 (even if the touch positions of the touch pens 401 and 402 collide), the control unit 320 analyzes the pen pressure associated with each touch ID. By determining whether or not the writing pressure is based on a series of touch operations, the association between the pen ID and the touch ID is corrected as necessary. As a result, it is possible to reduce an event such as switching of drawing attribute information (for example, line color, width, type, etc.) of the touch pen.

[Second Embodiment]
Hereinafter, a second embodiment will be described. Note that the touch pen system according to the present embodiment has the same configuration as the hardware of the touch pen system according to the first embodiment. Therefore, the description of hardware will not be repeated.

The gist of the present embodiment is as follows when shown as the flow of processing. That is, the technical idea according to the second embodiment is different from the technical idea according to the first embodiment in that (Processing B1) is added and (Processing A5) is not included.
(Processing A1)
(Process A2)
(Process B1) When two or more touch coordinates exist on the touch panel 110 and they exist within a certain distance, process A3 and process A4 are executed. Otherwise, the control unit 320 executes process A2.
(Process A3)
(Process A4)
(Process A6)
<Control structure>
With reference to FIG. 6, the control structure of the display terminal according to the present embodiment will be described. FIG. 6 is a flowchart showing a part of processing executed by CPU 330. In addition, the same step number is attached | subjected to the process same as the process in 1st Embodiment. Therefore, the description of the same process will not be repeated.

  In step S610, CPU 330 determines whether or not a touch point having another touch ID is within a predetermined distance (for example, within 1 cm). When CPU 330 determines that there is such a touch point (YES in step S610), CPU 330 switches control to step S540. If not (NO in step S610), CPU 330 switches control to step S560.

(Effect of embodiment)
According to the present embodiment, the processing after step S540 is performed according to the result of the processing at step S610. As a result, the width of the writing pressure to be checked is reduced, so that judgment can be prevented and processing accuracy can be improved.

[Third Embodiment]
The third embodiment will be described below. The touch pen system according to the third embodiment has the same hardware configuration as the touch pen system according to the first embodiment. Therefore, the description of the hardware configuration will not be repeated.

The gist of the present embodiment is as follows when shown as the flow of processing. That is, the technical idea according to the third embodiment is different from the technical idea according to the first embodiment in that (Processing C1) is added.
(Processing A1)
(Process A2)
(Process C1) When the movement of the touch pen 400 is detected, the control unit 320 checks whether there is pen pressure information having another touch ID nearby, and displays a warning if there is any.
(Process A3)
(Process A4)
(Process A5)
(Process A6)
<Control structure>
A control structure of display terminal 100 according to the present embodiment will be described with reference to FIG. 7 and FIG. 7 and 8 are flowcharts showing a part of processing executed by the CPU 330. FIG. In addition, the same step number is attached | subjected to the process same as the process which concerns on 1st Embodiment. Therefore, the description of the same process will not be repeated.

  As shown in FIG. 7, in step S700, CPU 330 displays a warning for inducing writing pressure. When this process is executed, the display device 120 displays, for example, the characters “strongly” or “weakly” for a predetermined time.

  Referring to FIG. 8, in step S810, CPU 330 determines whether or not the writing pressure information to which another touch ID is assigned is within a predetermined range (for example, within 10 cm to 20 cm). When CPU 330 determines that the writing pressure information to which another touch ID is assigned is within a predetermined range (YES in step S810), control is switched to step S820. If not (NO in step S810), CPU 330 switches control to step S830.

  In step S820, CPU 330 displays character “approaching!” On display device 120 for a predetermined period of time.

  In step S830, CPU 330 determines whether or not the writing pressure information to which another touch ID is assigned is within a predetermined distance (for example, 10 cm). When CPU 330 determines that the pen pressure information to which another touch ID is assigned is within a predetermined distance (YES in step S830), CPU 330 switches control to step S840. If not (NO in step S830), CPU 330 returns control to the main process (FIG. 7).

  In step S840, CPU 330 determines whether the writing pressure of the other touch ID is higher than the writing pressure of the touch ID. When CPU 330 determines that the writing pressure of another touch ID is stronger than the writing pressure of that touch ID (YES in step S840), control is switched to step S850. If not, the CPU 330 switches the control to step S860.

  In step S850, CPU 330 displays “strongly” on display device 120 for a predetermined period of time. Thereafter, control is returned to the main process.

  In step S860, CPU 330 displays “weak” on display device 120 for a predetermined period of time. Thereafter, control is returned to the main process.

<Display mode>
With reference to FIG. 9, a warning display mode according to the present embodiment will be described. FIG. 9 is a diagram illustrating an example of a warning displayed when drawing with a plurality of touch pens is performed on the display device 120. In one aspect, the display device 120 may display a character that warns that two touch pens are approaching or a character that induces writing pressure.

  As shown in FIG. 9A, in a certain situation, the touch pen 401 and the touch pen 402 each draw. A trajectory 911 of the touch pen 401 holds each writing pressure that is periodically acquired together with the touch ID (= 1). Similarly, the trajectory 912 of the touch pen 402 holds each writing pressure that is periodically acquired together with the touch ID (= 2).

  With reference to FIG. 9B, each drawing with the touch pen 401 and the touch pen 402 may go to a certain place. The trajectory 921 of the touch pen 401 and the trajectory 922 of the touch pen 402 may each be in a certain direction.

  With reference to FIG. 9C, the touch pen 401 and the touch pen 402 may be drawn so as to move outward from a certain place.

  As illustrated in FIG. 9D, in a certain situation, the touch pen 401 and the touch pen 402 may approach each other and touch a certain position such as a locus 941 and a locus 942. At this time, the display device 120 may display, for example, a letter “approaching!” As a warning.

  As shown in FIG. 9E, in a certain aspect, the display device 120 displays a message that prompts the user to “weaken” the writing pressure of the touch pen 401. "Is displayed. By visually recognizing such a message, each user of the touch pens 401 and 402 can perform each touch operation of the touch pens 401 and 402 with a writing pressure corresponding to the message. Alternatively, each user can perform a touch operation on the touch panel 110 so that the touch pens 401 and 402 are separated from each other.

<Technology>
The technical idea according to the above-described embodiment is as follows.

  (Step 1) When each user simultaneously draws a line with a plurality of touch pens on the display terminal 100 including the touch panel 110, the display terminal 100 detects a plurality of touch points. In this case, the display terminal 100 continuously monitors the pen pressure information of each touch point detected by the touch panel 110 (for example, at regular intervals), and manages the association between the touch ID and the pen pressure information. To do.

  (Step 2) For the pen A, the first user designates black and starts writing a line. At this time, the control unit 320 of the display terminal 100 periodically acquires the pen pressure information on the pen A in addition to the touch coordinate information on the pen A, associates the touch ID with the pen pressure, The touch ID and writing pressure are stored in the memory 340.

  (Step 3) The second user designates red for pen B and starts to draw a line. At this time, similarly to the above (Step 2), the control unit 320 of the display terminal 100 periodically acquires the pen pressure information with the pen A in addition to the touch coordinate information with the pen A, and the touch ID and The pen ID, the touch ID, and the writing pressure are stored in the memory 340 in association with the writing pressure.

  (Step 4) By recognizing the coordinate value of the pen A and the coordinate value of the pen B as the same value, it becomes possible to determine that the pen A and the pen B collide with each other on the data. When the touch point is indicated, there is a possibility that an event in which the touch ID of the pen A and the touch ID of the pen B are interchanged may occur in the display terminal 100. At this time, the control unit 320 refers to the pen pressure information managed in association with the touch ID in the above (Step 2) and (Step 3), and detects the pen pressure managed as history information. It is determined whether or not the writing pressure is switched. When these writing pressures are switched, the control unit 320 corrects the association between the writing pressure and the touch ID, and uses the detected writing pressure as the touch ID so that the original association state is obtained. Associate.

[Constitution]
In summary, the technical idea according to the present embodiment can be realized with the following configuration.

[Claim 1]
A touch input system,
A plurality of touch pens 401, 402;
A display terminal 100 that performs display in response to a touch by each of a plurality of touch pens 401 and 402;
The display terminal 100
A touch panel 110 that receives a touch input from each of the plurality of touch pens 401 and 402;
A display unit 360 configured to display in response to each touch input;
A detection unit 312 configured to detect the pen pressure of the touch pen on the touch panel 100;
A memory 340 for storing pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen;
A touch input system comprising: a control unit 320 for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information.

[Configuration 2]
Each of the plurality of touch pens is
A transmission unit 430 configured to transmit the pen identification information of the touch pen to the display terminal;
The display terminal
The touch input system according to Configuration 1, further comprising a receiving unit 311 configured to receive the pen identification information of the touch pen from each of the plurality of touch pens.

[Configuration 3]
A display terminal 100,
A touch panel 110 that receives a touch input from each of the plurality of touch pens 400 and 401;
A display unit 360 configured to display in response to each touch input;
A detection unit 312 configured to detect the writing pressure of the touch pen with respect to the touch panel;
A memory 340 for storing pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen;
A control unit 320 is provided for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information.

[Configuration 4]
The display terminal according to Configuration 3, further comprising a reception unit 311 configured to receive the pen identification information of the touch pen transmitted from each of the plurality of touch pens.

[Configuration 5]
The pen identification information is associated with attribute information that defines the content of drawing with the touch pen,
The control unit 320
When the difference between the latest writing pressure detected by the detection unit and the writing pressure stored in the memory is within a predetermined range, the writing pressure associated with the touch identification information is set as the history information. Add to
An image is displayed based on the attribute information associated with the pen identification information.

  Each of the above-described configurations can be realized by a circuit element that realizes each configuration, or a combination of a program module that realizes each process and a processor that executes an instruction defined in the program module.

<Summary of Embodiment>
As described above, according to the present embodiment, while the touch pen 400 is touching the touch panel 110, the control unit 320 periodically displays the pen pressure information at the points touched by the touch pens 401 and 402, respectively. To check. Even when the coordinates of the two touch pens 401 and 402 collide, the control unit 320 analyzes and determines each writing pressure to correct the association between the pen ID information and the touch identification information as necessary. This can reduce malfunctions such as pen drawing attributes (for example, line type, width, color, etc.) being changed from the middle of drawing.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  100 display terminal, 110 touch panel, 120 display device, 130 application layer, 131 software, 150 kernel layer, 160 driver layer touch panel control unit, 170 driver layer display control unit, 310 input unit, 311 wireless data reception unit, 312 touch panel control unit 320, 440 control unit, 340 memory, 350 program, 351 touch control unit, 352 pen attribute management unit, 353 drawing processing unit, 353 pen determination drawing processing unit, 360 display unit, 400, 401, 402 touch pen, 410 rechargeable battery 420 wireless device, 430 attribute information transmission unit, 450 attribute information storage unit.

Claims (5)

A touch input system,
Multiple touch pens,
A display terminal that performs display according to a touch by each of the plurality of touch pens,
The display terminal is
A touch panel that receives a touch input from each of the plurality of touch pens;
A display unit configured to display in response to each touch input;
A detection unit configured to detect the pen pressure of the touch pen with respect to the touch panel;
A memory for storing pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen;
A touch input system comprising: a control unit for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information. Each of the plurality of touch pens is
A transmission unit configured to transmit the pen identification information of the touch pen to the display terminal;
The display terminal is
The touch input system according to claim 1, further comprising: a receiving unit configured to receive the pen identification information of the touch pen from each of the plurality of touch pens. A display terminal,
A touch panel for receiving touch input from each of a plurality of touch pens;
A display unit configured to display in response to each touch input;
A detection unit configured to detect the pen pressure of the touch pen with respect to the touch panel;
A memory for storing pen identification information for identifying each of the plurality of touch pens, touch identification information for identifying each touch by each of the plurality of touch pens, and writing pressure of the touch pen;
A display terminal comprising: a control unit for managing each touch by each touch pen based on the writing pressure of each touch pen, each pen identification information, and each touch identification information.   The display terminal according to claim 3, further comprising a receiving unit configured to receive the pen identification information of the touch pen transmitted from each of the plurality of touch pens. The pen identification information is associated with attribute information that defines the content of drawing with the touch pen,
The controller is
When the difference between the latest writing pressure detected by the detection unit and the writing pressure stored in the memory is within a predetermined range, the writing pressure associated with the touch identification information is stored in the memory. Add as history,
The display terminal of Claim 3 or 4 which displays an image based on the said attribute information linked | related with the said pen identification information.