JP2019023870A - Information processing device, information processing program, information processing method and information processing system - Google Patents

Abstract

To provide an information processing device, an information processing program, an information processing method and an information processing system switching screens among a plurality of devices in a short time.SOLUTION: An information processing device (a master machine 10a, slave machines 10b, 10c) includes a CPU, and when a user handwrites a character or the like by using a touch pen 110 on a touch panel, the handwritten image is displayed on a display. The information processing device sends a first request signal requesting data (drawing data) corresponding to the handwritten image to other information processing device. The information processing device saves (updates), when receiving the drawing data from the other information processing device receiving the first request signal, the received drawing data. The other information processing device sends, in the second and subsequent times, difference data from the drawing data sent until previous time. Further, the information processing device updates the saved drawing data of the other information processing device according to an instruction from the user, and outputs the handwritten image on the display by using the updated drawing data.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an information processing device, an information processing program, an information processing method, and an information processing system, and in particular, for example, an information processing device, an information processing program, and an information processing method for displaying characters handwritten using a touch panel on a display And an information processing system.

  In the video display device disclosed in Patent Document 1, a main display area and a sub display area are provided on the display screen, and the line-of-sight information and the position information of the face image of the viewer watching the video displayed on the display screen are provided. Based on this, when a video in which a plurality of viewers are interested is detected, and the detected video is displayed in the sub display area, the video is switched so that the video is displayed in the main display area.

  Further, in a multi-monitor system in which a main monitor and a plurality of sub-monitors are connected in Patent Document 2, a window registered to be displayed on a designated sub-monitor screen is displayed in accordance with the designated sub-monitor connection state. Is displayed.

JP 2006-119408 A JP 2002-268868 A

  However, in Patent Document 1, it is assumed that the video is switched between the main display area and the sub display area obtained by dividing one display screen of the video display apparatus, and the display contents are switched (switched) among a plurality of apparatuses. It has not been.

  In this regard, since Patent Document 2 has a main monitor and a plurality of sub-monitors, the display content can be switched between the main monitor and the sub-monitors or between sub-monitors. When installing multiple monitors apart from each other, a digital or analog video cable (for example, HDMI (registered trademark) cable, DVI cable, D terminal cord, USB cable, D-sub cable) that connects the personal computer and the monitor. Etc.) and block noise is likely to occur due to transmission loss.

  Therefore, instead of the multi-monitor system, for example, it is conceivable to construct a network in which a plurality of video display devices are connected, and to switch display contents by transmitting and receiving video (image) data between the video display devices. However, in such a case, as the display content increases, the amount of video (image) data transmitted / received between the video display devices increases, so traffic is mixed, and video (image) data is transmitted / received. It takes time. That is, it takes time to switch display contents between monitors.

  Therefore, a main object of the present invention is to provide a novel information processing apparatus, information processing program, information processing method, and information processing system.

  Another object of the present invention is to provide an information processing device, an information processing program, an information processing method, and an information processing system capable of switching screens between a plurality of devices in a short time.

  An information processing apparatus according to a first aspect of the present invention includes an input detection unit that detects an input instruction by a user and a communication unit that communicates with another information processing apparatus, and includes drawing data about a handwritten image handwritten by the user. An information processing apparatus that stores information in a storage device in an identifiable manner and displays a handwritten image on a display device. The information reception device receives drawing data transmitted from another information processing device. Data storage means for storing drawing data in a storage device so as to be identifiable for each other information processing device, at least data transmission means for sending drawing data of the own device to other information processing devices, and input detected by the input detection means An image that displays a handwritten image of another information processing apparatus on a display device using drawing data stored in the storage device in response to an instruction A it is switching means, the data transmission means, the second and subsequent transmitting the differential data for the difference between the drawing data transmitted up to the previous to another information processing apparatus.

  According to the first aspect, since the updated handwritten image of the other information processing apparatus is displayed on the display device of the information processing apparatus, the screen can be switched between the other information processing apparatuses in a short time.

  In the information processing apparatus according to the second aspect of the invention, when the handwritten image for the other information processing apparatus is displayed on the display device by the screen switching means, the data requesting means for requesting the other information processing apparatus to transmit the handwritten image drawing data. Is further provided. Further, the data transmission means transmits at least the drawing data of the own apparatus to the other information processing apparatus that has made the request in response to a request from the other information processing apparatus.

  In the information processing apparatus of the third invention, the screen switching means receives the difference data transmitted from the other information processing apparatus in response to the request by the data requesting means, and draws data for the other information processing apparatus. And the handwritten image of the other information processing apparatus is displayed on the display device using the updated drawing data.

  Also in the second and third inventions, similarly to the first invention, the screen can be switched between other information processing apparatuses in a short time.

  In the information processing apparatus according to the fourth aspect of the invention, the screen switching means displays at least a selection image for selecting a handwritten image for another information processing apparatus in accordance with the input instruction detected by the input detection means. Display device including selected image display means for displaying, using drawing data stored in storage device for handwritten image of other information processing device indicated by selection image in accordance with input instruction detected by input detection means To display.

  In the information processing apparatus of the fifth invention, the selected image is a thumbnail of a handwritten image of another information processing apparatus generated using the drawing data stored in the storage device.

  According to the fourth and fifth aspects, the user can easily recognize the display content displayed on the screen of another information processing apparatus.

  6th invention is equipped with the input detection means which detects the input instruction by a user, and the communication means which communicates between other information processing apparatuses, and memorize | stores drawing data about the handwritten image handwritten by the user so that identification is possible An information processing program stored in a device and executed by an information processing device that displays a handwritten image on a display device, the drawing being transmitted from one or more other information processing devices to a processor of the information processing device A data receiving step for receiving data, a data storing step for storing the drawing data received in the data receiving step in a storage device so that each other information processing device can be identified, and at least sending the drawing data of the own device to the other information processing device The data transmission step and the other information processing apparatus according to the input instruction detected by the input detection means. The screen switching step of displaying the handwritten image of the image on the display device using the drawing data stored in the storage device is executed, and the data transmission step is difference data about the difference from the drawing data transmitted until the previous time for the second and subsequent times. Is transmitted to another information processing apparatus.

  7th invention is equipped with the input detection means which detects the input instruction | indication by a user, and the communication means which communicates between other information processing apparatuses, and memorize | stores drawing data about the handwritten image handwritten by the user so that identification is possible An information processing method of an information processing apparatus for storing a handwritten image on a display device while storing the image in the device, (a) receiving drawing data transmitted from one or more other information processing devices, and (b ) Storing the drawing data received in step (a) in a storage device so as to be identifiable for each other information processing device, (c) transmitting at least drawing data of the own device to the other information processing device, and (d) In accordance with the input instruction detected by the input detection means, a handwritten image for another information processing device is displayed on the display device using the drawing data stored in the storage device, and step (c) Is, the second and subsequent to send the difference data of the difference between the drawing data transmitted until the last time to the other information processing apparatus.

  8th invention is equipped with the input detection means which detects the input instruction by a user, and the communication means which communicates between other information processing apparatuses, and memorize | stores drawing data about the handwritten image handwritten by the user so that identification is possible An information processing system including a plurality of information processing devices that store information in a device and display a handwritten image on a display device, the first information processing device functioning as a parent device among the plurality of information processing devices, and a plurality of information processing devices A first data receiving means for receiving drawing data transmitted from the second information processing device, including one or more second information processing devices functioning as slave units among the information processing devices of The first data storage means for storing the drawing data received by the first data receiving means in the storage device of its own so as to be identifiable for each second information processing device, the drawing of the first information processing device And other second information processing according to the input instruction detected by the input detecting means of the own device and the first data transmitting means for transmitting the drawing data of the data and the other second information processing apparatus to the second information processing apparatus First screen switching means for displaying a handwritten image of the apparatus on a display apparatus of the own apparatus using drawing data of another second information processing apparatus stored in the storage apparatus of the own apparatus, and first data transmission means Transmits the difference data about the difference from the drawing data transmitted until the previous time to the second information processing apparatus from the second time, and the second information processing apparatus displays the drawing data displayed on its own display device as the first data. 1 second data transmitting means for transmitting to the information processing device, second data receiving means for receiving drawing data transmitted by the first data transmitting means, and drawing data received by the second data receiving means for the first information. Second data storage means for storing the processing apparatus and other second information processing apparatus in the storage apparatus of the own apparatus in an identifiable manner, and the first information processing apparatus according to the input instruction detected by the input detection means of the own apparatus Alternatively, the handwritten image of the other second information processing apparatus is displayed on the display apparatus of the own apparatus using the drawing data of the first information processing apparatus or the other second information processing apparatus stored in the storage apparatus of the own apparatus. A second screen switching unit is provided, and the second data transmission unit transmits difference data about the difference from the drawing data transmitted until the previous time to the first information processing apparatus after the second time.

  In the sixth to eighth inventions, similarly to the first invention, the screen can be switched between a plurality of information processing apparatuses in a short time.

  According to this invention, the screen can be switched between other information processing apparatuses in a short time.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

FIG. 1 is a block diagram showing an electrical configuration of the information processing apparatus according to the first embodiment. FIG. 2A is an illustrative view showing one example of a touch screen displayed on the display, and FIG. 2B is an illustrative view showing a second example of the touch screen displayed on the display. It is. FIG. 3 is an illustrative view showing one example of an information processing system in the first embodiment. 4A is an illustrative view showing one example of a touch screen displayed on the display of each information processing apparatus in the information processing system of the first embodiment, and FIG. 4B is a touch screen displayed on each display. FIG. 4C is an illustrative view showing another example of a touch screen displayed on each display. FIG. 5 is an illustrative view showing one example of a memory map of a RAM of the parent device shown in FIG. FIG. 6 is a flowchart showing a part of an example of the drawing control processing of the CPU of the parent device shown in FIG. FIG. 7 is another part of the drawing control process of the CPU of the master unit shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 8 is another part of the drawing control process of the CPU of the master unit shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 9 is another part of the drawing control process of the CPU of the parent device shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 10 is a flowchart showing the storage processing of the CPU of the parent device shown in FIG. FIG. 11 is a flowchart showing a part of an example of the drawing control process of the CPU of the slave shown in FIG. 12 is another part of the drawing control processing of the CPU of the slave shown in FIG. 1, and is a flowchart subsequent to FIG. FIG. 13 is a flowchart showing the storage processing of the CPU of the slave shown in FIG. FIG. 14A is an illustrative view showing one example of a touch screen displayed on the display in the information processing system of the second embodiment, and FIG. 14B is another touch screen displayed on the display in the information processing system. It is an illustration figure which shows the example. FIG. 15 is a part of the drawing control processing of the CPU of the parent device in the second embodiment, and is a flowchart subsequent to FIG. FIG. 16 is a part of the drawing control process of the CPU of the slave unit in the second embodiment, and is a flowchart subsequent to FIG. FIG. 17A is an illustrative view showing one example of a touch screen displayed on the display in the information processing system of the third embodiment, and FIG. 17B is another touch screen displayed on the display in the information processing system. It is an illustration figure which shows the example. FIG. 18 is a part of the drawing control process of the CPU of the parent device in the third embodiment, and is a flowchart subsequent to FIG. FIG. 19 is a part of the drawing control process of the CPU of the slave unit in the third embodiment, and is a flowchart subsequent to FIG.

<First embodiment>
FIG. 1 is a block diagram showing an electrical configuration of the information processing apparatus 10 according to the first embodiment.

  Referring to FIG. 1, information processing apparatus 10 according to the first embodiment of the present invention includes a CPU 12. A RAM 14, a touch panel control circuit 16, a drawing control circuit 18, and an I / F circuit 24 are connected to the CPU 12 via a bus 30. A touch panel 20 is connected to the touch panel control circuit 16, and a display 22 is connected to the drawing control circuit 18.

  Although not shown, the information processing apparatus 10 is also provided with a nonvolatile memory such as an HDD or a ROM, and is connected to the CPU 12 via the bus 30.

  In the first embodiment, the information processing apparatus 10 is applied to various information devices or electronic devices such as an electronic blackboard, a tablet terminal, a smartphone, and a PC.

  In the first embodiment, a case where the touch panel 20 is used as an example of the input unit will be described. However, as an input unit other than the touch panel 20, a pointing device such as a computer mouse, a touch pad, or a pen tablet is used. Also good. The information processing apparatus 10 may be provided with a hardware key such as an operation panel or a hardware keyboard as other input means.

  Returning to FIG. 1, the CPU 12 governs overall control of the information processing apparatus 10. The RAM 14 is used as a work area and a buffer area for the CPU 12.

  The touch panel control circuit 16 applies necessary voltage and the like to the touch panel 20, detects a touch operation (touch input) within the touch effective range of the touch panel 20, and outputs touch coordinate data indicating the position of the touch input to the CPU 12. Output to.

  The touch panel 20 is a general-purpose touch panel, and an arbitrary system such as an electrostatic capacity system, an electromagnetic induction system, a resistance film system, and an infrared system can be used. In the first embodiment, as the touch panel 20, a capacitive touch panel is provided on the display surface of the display 22.

  The drawing control circuit 18 includes a GPU, a VRAM, and the like. Under the instruction of the CPU 12, the GPU displays a screen on the display 22 using handwritten input data and image generation data 332 (see FIG. 5) stored in the RAM 14. Screen data for displaying (a touch screen 100 described later) is generated in the VRAM, and the generated screen data is displayed on the display 22. As the display 22, for example, an LCD or an EL (Electro-Luminescence) display can be used.

  The other information processing apparatus 10 is communicably connected to the I / F (interface) circuit 24 via a communication cable (for example, a LAN cable). (See FIG. 3).

  In the information processing apparatus 10 having such a configuration, in the handwriting input mode, the user uses the touch panel 20 to input characters, figures, symbols, and the like (hereinafter sometimes referred to as “characters”) by handwriting (touch input). Then, the touch panel control circuit 16 detects the touch input and outputs touch coordinate data corresponding to the touch position to the CPU 12. The CPU 12 draws (displays) handwritten characters on the display 22 based on the touch coordinate data output from the touch panel control circuit 16. That is, under the instruction of the CPU 12, handwritten characters and the like are drawn on the VRAM in the drawing control circuit 18, and image data corresponding to an image including the handwritten characters and the like drawn on the VRAM is output to the display 22. Therefore, an image including characters handwritten by the user is displayed on the display 22. Hereinafter, in this specification, an image including a handwritten character is referred to as a “handwritten image” on the premise that the user handwrites the character.

  FIG. 2A is an illustrative view showing an example of a touch screen 100 (initial screen) before handwriting is started. That is, FIG. 2A shows an example of the touch screen 100 that executes the drawing application and is displayed on the display 22 and that has started the handwriting input mode. FIG. 2B is a second example of the touch screen 100 displayed on the display 22 and shows the touch screen 100 in a state where lines are handwritten (board writing).

  As shown in FIG. 2A, for example, at the beginning of the handwriting input mode, a blank screen touch screen 100 on which a handwritten image is not displayed is displayed on the display 22. However, when the drawing data of the stored handwritten image is read, the touch screen 100 including the handwritten image is displayed. As described above, the touch panel 20 is provided on the display surface of the display 22. The same applies hereinafter.

  As shown in FIG. 2A, an image (icon) of a button (function button) that performs a predetermined function is displayed at the left end of the touch screen 100. In the first embodiment, a screen switching button 102 is displayed. The screen switching button 102 is a button for switching the handwritten image displayed on the display 22 to the handwritten image displayed on the display 22 of another information processing apparatus 10.

  Although illustration is omitted, on the touch screen 100, an attribute button for selecting drawing attributes such as line type, line width (thickness), line color, and other functions (open a new page, open an image). Icons such as buttons for selecting (insert), save, undo, etc. are also displayed.

  For example, the user operates the touch panel 20 with the dedicated touch pen 110. However, the user can also operate with fingers. The operation (input) using the touch panel 20 includes tap (short press), slide (drag), flick, long touch (long press), etc. In the first embodiment, these are “touch input” or simply They are generically named as “input”. Further, changing from a state where the touch panel 20 is not touched to a state where the touch panel 20 is touched is referred to as touch-on (pen down), and changing from a state where the touch panel 20 is touched to a state where the touch panel 20 is not touched is referred to as touch-off (pen). Say up). For continuous touch input, that is, input by sliding or flicking, the touch panel 20 outputs touch coordinate data corresponding to the current touch position at a cycle shorter than a predetermined cycle. For example, the predetermined period is 1 to several frames, and one frame is 1/30 second, 1/60 second or 1/120 second.

  In a general electronic blackboard that is an example of the information processing apparatus 10, when a user handwrites a character or the like, the handwritten character or the like is displayed (drawn) on the touch screen 100. That is, a handwritten image including handwritten characters and the like is displayed on the display 22 (touch screen 100). At this time, the handwritten image is drawn (displayed) according to the set attribute information (line type, line color, line width).

  For example, in a large classroom, it is assumed that a plurality of information processing apparatuses 10 as described above are used. When a lesson is advanced by a user such as a teacher or a student using these information processing devices 10, there is a case where it is desired to switch the screen of the information processing device 10 to the screen of another information processing device 10. Conceivable. This is because when a teacher in front of a classroom wants to proceed with a lesson in accordance with the content displayed on the screen of the information processing device 10 installed behind the classroom, the content is installed in front of the classroom. This is because if it is displayed on the screen of 10, the class can be smoothly advanced without moving to the back of the classroom.

  In such a case, it is conceivable that a plurality of information processing apparatuses 10 installed in a classroom are communicably connected using a LAN cable (and a HUB (router)). Then, when it is desired to switch the screen of a certain information processing apparatus 10 to the screen of another information processing apparatus 10, the data of the content displayed on the screen of the other information processing apparatus 10 is displayed by the certain information processing apparatus 10. (Screen data) may be received and the received screen data may be output to the display 22 of the certain information processing apparatus 10.

  However, when switching the screen of one information processing apparatus 10 to the screen of another information processing apparatus 10, if the amount of screen data to be transmitted / received is large, it takes time to transmit / receive screen data. For this reason, it takes time to switch screens. When the screen of one information processing apparatus 10 and the screen of another information processing apparatus 10 are switched, it takes more time to transmit and receive screen data. In this way, the class may not be able to proceed smoothly.

  In order to avoid such inconvenience, in the first embodiment, the amount of data transmitted / received at the same time between other information processing apparatuses 10 is suppressed, and between other information processing apparatuses 10 installed at remote locations, The screen can be switched in a short time. This will be specifically described below.

  FIG. 3 is an illustrative view showing one example of an information processing system 200 in the first embodiment.

  In the first embodiment, as shown in FIG. 3, the information processing system 200 includes three information processing apparatuses 10, and each of the three information processing apparatuses 10 is a LAN (in some cases, the Internet). The network 202 is communicably connected. In the first embodiment, the three information processing apparatuses 10 include one main information processing apparatus 10a (hereinafter referred to as “base unit 10a”) and two sub information processing apparatuses 10b (hereinafter referred to as “main unit 10a”). , “Slave unit 10b”) and information processing apparatus 10c (hereinafter referred to as “slave unit 10c”). In the first embodiment, the parent device 10a, the child device 10b, and the child device 10c are connected to the network 202 via a LAN cable. However, the parent device 10a, the child device 10b, and the child device 10c may be connected to the network 202 wirelessly.

  In the following description, when it is not necessary to distinguish the parent device 10a, the child device 10b, and the child device 10c, they are simply referred to as the information processing device 10.

  In the parent device 10a, the child device 10b, and the child device 10c of the first embodiment, data corresponding to a handwritten image handwritten by a user's touch input (hereinafter referred to as “drawing data”) is stored (stored). The

  Further, in the parent device 10a, the child device 10b, and the child device 10c of the first embodiment, drawing data other than the own device is periodically saved. That is, drawing data of the slave unit 10b and the slave unit 10c is periodically stored in the master unit 10a. In addition, drawing data of the parent device 10a and the child device 10c is periodically saved in the child device 10b, and drawing data of the parent device 10a and the child device 10b is periodically saved in the child device 10c.

  However, in the first embodiment, the master unit 10a acquires the respective drawing data from the slave unit 10b and the slave unit 10c, and the slave unit 10b and the slave unit 10c are connected to the master unit 10a and other slave units from the master unit 10a. The drawing data of the machine (10c or child machine 10b) is acquired.

  More specifically, the base unit 10a receives a signal (hereinafter referred to as “first base unit request”) that requests a handwritten image from the slave unit 10b and the slave unit 10c every certain time T1 (for example, several minutes to 5 minutes). Signal "). In response to this, the slave unit 10b and the slave unit 10c transmit drawing data to the master unit 10a. However, the master unit 10a does not transmit the first master unit request signal to the slave unit 10b and the slave unit 10c, but the slave unit 10b and the slave unit 10c perform drawing data in the master unit 10a at a certain time T1. May be transmitted. Then, the parent device 10a receives the drawing data transmitted from the child device 10b and the child device 10c, and stores the received drawing data in the RAM 14. However, when the slave device 10b and the slave device 10c transmit the drawing data (the first master device request signal is received) for the first time, all of the drawing data of the own device (hereinafter referred to as “base data”). In the second and subsequent times, difference data between the drawing data of the own device transmitted so far and the current drawing data of the own device stored in the RAM 14 is transmitted. Further, in the parent device 10a, the drawing data (base data and difference data) is stored in the RAM 14 so that each of the parent device 10a, the child device 10b, and the child device 10c can be identified. This is the same also about the subunit | mobile_unit 10b and the subunit | mobile_unit 10c mentioned later.

  The subunit | mobile_unit 10b transmits the signal (henceforth a "1st subunit | mobile_unit request signal") which requests drawing data to the main | base station 10a for every fixed time T2. In response to this, the parent device 10a transmits drawing data of the parent device 10a and another child device (here, the child device 10c) to the child device 10b. However, the slave unit 10b may not transmit the first slave unit request signal to the master unit 10a, but the master unit 10a may transmit drawing data to the slave unit 10b at a certain time T2. The subunit | mobile_unit 10b receives each drawing data of the main | base station 10a and the subunit | mobile_unit 10c transmitted from the main | base station, and memorize | stores each received drawing data in RAM14. However, when the master device 10a transmits the drawing data (receives the first slave device request signal) for the first time, the master device 10a transmits the base data of the own device and the base data of the other slave devices, and the second and subsequent times. Is the difference data between the drawing data of the own device transmitted up to the previous time and the current drawing data of the own device stored in the RAM 14, the drawing data of other child devices transmitted up to the previous time and the current data stored in the RAM 14. The difference data of the drawing data of the other slave unit is transmitted.

  Although a detailed description is omitted, the slave unit 10c is the same as the slave unit 10b.

  Further, the above-described fixed time T1 and fixed time T2 may be the same time or different times.

  As described above, in the parent device 10a, the child device 10b, and the child device 10c, only the difference data is transmitted and received after the second time, so that the data amount can be reduced. In addition, since each of the parent device 10a, the child device 10b, and the child device 10c also stores drawing data of the other information processing device 10, it is necessary to acquire drawing data from the other information processing device 10 when the screen is switched. There is no, you can switch the screen in a short time.

  Next, switching of the screen will be specifically described. 4A, 4 </ b> B, and 4 </ b> C are touch screens 100 (100 a, 100 b, 100 c) displayed on the respective displays 22 of the parent device 10 a, the child device 10 b, and the child device 10 c in the information processing system 200. It is an illustration figure which shows the example. However, in FIGS. 4A to 4C, only the manner in which the screen is switched is described, and thus a handwritten image with a small amount of data is shown. In the following, the screens displayed on the display 22 of the parent device 10a, the child device 10b, and the child device 10c are referred to as a touch screen 100a, a touch screen 100b, and a touch screen 100c, respectively. However, when it is not necessary to distinguish between the touch screens 100a, 100b, and 100c, the touch screen 100 is simply referred to.

  For example, as shown in FIG. 4A, when the screen switching button 102 is touched (selected) in the parent device 10a, as shown in FIG. 4B, the first selection button 120 is displayed at the top of the touch screen 100a. A second selection button 122 and a third selection button 124 are displayed. As can be seen from FIG. 4B, the first selection button 120, the second selection button 122, and the third selection button 124 are thumbnails for the touch screens 100a, 100b, and 100c, respectively.

  As shown in FIG. 4B, when the user touches (selects) the second selection button 122, as shown in FIG. 4C, as a touch screen 100a of the parent device 10a, The same screen as the touch screen 100b of 10b is displayed. That is, the screen of the parent device 10a is switched to the screen of the child device 10b.

  Although not described in detail, the same applies to the case where the screen of the parent device 10a is switched to the screen of the child device 10c.

  Here, as described above, the master unit 10a obtains drawing data (difference data) from the slave unit 10b and the slave unit 10c at every predetermined time T1, and therefore, when the screen switching is instructed. The drawing data of the slave unit 10b and the slave unit 10c may not be the latest data. Therefore, in the first embodiment, when the switching of the screen is instructed, the parent device 10a requests a difference data (hereinafter referred to as “second”) from the child device 10b or the child device 10c that displays the switching screen. 2), the difference data is received from the slave unit 10b or the slave unit 10c, and the drawing data of the slave unit 10b or the slave unit 10c is updated to the latest data. The drawing data is output to the display 22. However, strictly speaking, the updated drawing data is output to the drawing control circuit 18, the GPU generates screen data corresponding to the touch screen 100 using the drawing data, and the generated screen data is output to the display 22. . The same applies hereinafter.

  The same applies to the case where the slave unit 10b or the slave unit 10c is instructed to switch to the screen of the master unit 10a. In this case, a signal requesting differential data (hereinafter referred to as “second slave unit request signal”) is transmitted from the slave unit 10b or the slave unit 10c to the master unit 10a.

  Further, in the example shown in FIGS. 4A to 4C, the screen of the parent device 10a is switched to the screen of the child device 10b. However, the present invention is not limited to this. For example, the screen of the slave unit 10b can be switched to the screen of the master unit 10a. In such a case, when the screen switching button 102 is touched (selected) by the user on the touch screen 100b displayed on the display 22 of the slave device 10b, the first to third selection buttons 120, 122 and 124 are displayed.

  Here, when the first selection button 120 is touched (selected) by the user, the slave unit 10b transmits the second slave unit request signal to the master unit 10a and receives the difference data from the master unit 10a. The drawing data for the machine 10 a is updated to the latest data, and the updated drawing data is output to the display 22. Therefore, the screen of the slave unit 10b is switched to the screen of the master unit 10a.

  The same applies when the screen of the slave unit 10c is switched to the screen of the master unit 10a.

  In addition, the screen can be switched between the slave unit 10b and the slave unit 10c. In such a case, when the user selects to switch to the screen of the other child device 10c or the child device 10b, the child device 10b or the child device 10c is assigned to the other child device 10c or the child device 10b. Two slave unit request signals are transmitted, and difference data is directly received (acquired) from the other slave unit 10c or slave unit 10b. Then, the slave unit 10 b or the slave unit 10 c updates the drawing data for the other slave unit 10 c or the slave unit 10 b to the latest data, and outputs the updated drawing data to the display 22.

  In addition, when switching the screen between the slave unit 10b and the slave unit 10c, the latest difference data is obtained directly from the slave unit 10c or the slave unit 10b. The second slave unit request signal may be transmitted to the slave unit 10c or the slave unit 10b, and the difference data may be acquired from the other slave unit 10c or the slave unit 10b via the master unit 10a.

  The above operations of the parent device 10a, the child device 10b, and the child device 10c are realized by the CPU 12 executing an information processing program stored in the RAM 14. However, as described above, since the functions of the parent device 10a are different from those of the child devices 10b and 10c, the information processing program stored in the RAM 14 of the parent device 10a is stored in the RAM 14 of the child devices 10b and 10c. It is partly different from the stored information processing program. In the first embodiment, as an example of an information processing program, a program (drawing control program) for a drawing application for drawing and saving handwritten characters and the like and switching the screen as described above is executed. The Specific processing will be described later with reference to a flowchart.

  FIG. 5 shows an example of the memory map 300 of the RAM 14 of the parent device 10a shown in FIG. As shown in FIG. 5, the RAM 14 includes a program storage area 302 and a data storage area 304. The program storage area 302 stores a drawing control program. The drawing control program includes an input detection program 310, an image generation program 312, a display program 314, a communication program 316, a difference transmission / reception program 318, a storage program 320, and a screen switching program 322.

  The input detection program 310 is a program for acquiring touch coordinate data 330 indicating the touch position on the touch panel 20 output from the touch panel control circuit 16 and storing it in the data storage area 304. However, the input detection program 310 is also a program for detecting an input from a hardware keyboard connected to the information processing apparatus 10 or a hardware operation panel or operation button provided in the information processing apparatus 10.

  The image generation program 312 uses the touch coordinate data 330 detected according to the input detection program 310 or the image generation data 332 described later to generate screen data corresponding to the touch screen 100. It is. Specifically, when the image generation program 312 is executed, the GPU draws screen data corresponding to the touch screen 100 in the VRAM in the drawing control circuit 18 under the instruction of the CPU 12.

  The display program 314 is a program for outputting drawing data generated according to the image generation program 312 to the display 22. Accordingly, the touch screen 100 is displayed on the display 22.

  The communication program 316 is a program for communicating with other information processing apparatuses 10 such as the slave units 10b and 10c.

  The differential transmission / reception program 318 transmits a first parent device request signal to the child device 10b and the child device 10c by communicating with the child device 10b and the child device 10c according to the communication program 316 when the predetermined time T1 has elapsed, In response to this, it is a program for receiving drawing data (base data or difference data) transmitted from the slave unit 10b and the slave unit 10c. The differential transmission / reception program 318 transmits a second parent device request signal to the child device 10b and the child device 10c by communicating with the child device 10b and the child device 10c according to the communication program 316 when the screen switching is instructed. In response to this, it is a program for receiving drawing data (base data or difference data) transmitted from the slave unit 10b and the slave unit 10c. Furthermore, the differential transmission / reception program 318 receives the first slave unit request signal or the second slave unit request signal from the slave unit 10b or the slave unit 10c by communicating with the slave unit 10b or the slave unit 10c according to the communication program 316, It is also a program for transmitting drawing data (base data or difference data) of the own device and another child device 10c or child device 10b to the child device 10b or child device 10c.

  The storage program 320 is a program for storing (saving) the touch coordinate data 330 for the handwritten image in the RAM 14 as drawing data (first drawing data 334 described later) of the parent device 10a (own device). In addition, the storage program 320 uses drawing data (base data and difference data) received from another information processing apparatus 10 (the child machine 10b and the child machine 10c) as drawing data (a later-described first data) of the other information processing apparatus 10. It is also a program for storing (saving) in the RAM 14 as the second drawing data 336 or the third drawing data 338).

  The screen switching program 322 converts the screen displayed on the display 22 of the own device (here, the parent device 10a) to the screen displayed on the other information processing apparatus 10 (here, the child device 10b or the child device 10c). This is a program for switching.

  Although illustration is omitted, the program storage area 302 also stores programs for selecting and executing various functions.

  The data storage area 304 stores touch coordinate data 330, image generation data 332, first display drawing data 334, second display drawing data 336, third display drawing data 338, a transmission / reception data buffer 340, and the like.

  The touch coordinate data 330 is current touch coordinate data (in the current frame) detected (acquired) according to the input detection program 310. When the touch coordinates indicated by the touch coordinate data 330 are included in the display area of a button (such as the screen switching button 102) displayed on the touch screen 100, a function assigned to the button is executed or an attribute (attribute information) is displayed. ). Further, when the touch coordinates indicated by the touch coordinate data 330 are not included in the display area of the button displayed on the touch screen 100, it is determined that the touch coordinates are included in handwritten characters and the like, The data is stored in the data storage area 304 as drawing data (here, first drawing data 334 described later).

  The image generation data 332 is data such as polygon data and texture data for generating image data corresponding to various screens such as the touch screen 100. The image generation data 334 also includes image data for various buttons (102, 120, 122, 124, etc.) displayed on the touch screen 100. However, since the image data of the designs of the buttons 120, 122, and 124 is generated from the drawing data (334, 336, 338), it is not included in the image generation data 332.

  The first drawing data 334 is drawing data of the parent device 10a (own device), and data on characters handwritten by touch input is managed for each locus (point or line) from touch-on to touch-off. In the first drawing data 334, touch coordinate data 330 detected for each frame from touch-on to touch-off is stored (arranged) in time series.

  The second drawing data 336 is drawing data of another information processing apparatus 10 (here, the child device 10b), and is drawing data received (acquired) from the child device 10b according to the storage program 320 and stored.

  The third drawing data 338 is drawing data of another information processing apparatus 10 (here, the child device 10c), and is received (acquired) from the child device 10c according to the storage program 320 and stored. The drawing data of the machine 10c.

  The second drawing data 336 and the third drawing data 338 are initially base data received from the slave unit 10b and the slave unit 10c, and thereafter every time differential data is received from the slave unit 10b and the slave unit 10c. The difference data is additionally stored and updated.

  The transmission / reception data buffer 340 is an area for temporarily storing data transmitted / received between the child device 10b and the child device 10c.

  In the data storage area 304, other data necessary for executing the drawing control program is stored, and a timer (counter) and a register necessary for executing the drawing control program are provided.

  Next, a memory map of the RAM 14 provided in the slave unit 10b and the slave unit 10c will be described. However, since the memory maps of the slave unit 10b and the slave unit 10c are the same as the memory map 300 of the master unit 10a except that the contents of the differential transmission / reception program 318, the storage program 320, and the screen switching program 322 are different, Explanation will be omitted, and repeated explanation will be omitted.

  The difference transmission / reception program 318 of the child device 10b or the child device 10c transmits the first child device request signal to the parent device 10a when the predetermined time T2 has elapsed, and in response to this, the parent device 10a transmits the parent device 10a. This is a program for receiving drawing data (base data or difference data) of the machine 10a and another child machine 10c or child machine 10b. Further, the difference transmission program 318 of the child device 10b or the child device 10c receives the drawing data (base data or difference data) when receiving the first parent device request signal or the second parent device request signal from the parent device 10a. It is also a program for transmitting to the machine 10a. Further, the difference transmission / reception program 318 of the child device 10b or the child device 10c receives the second child device request signal from the other child device 10c or the child device 10b, and draws drawing data (difference data) into the other child device. It is also a program for transmitting to 10c or the subunit | mobile_unit 10b.

  The storage program 320 of the child device 10b or the child device 10c uses the touch coordinate data 330 for the handwritten image as drawing data (second drawing data 336 or third drawing data 338) of the own device (the child device 10b or the child device 10c). This is a program for storing (saving) in the RAM 14. In addition, the storage program 320 of the slave unit 10b or the slave unit 10c receives drawing data (base data or difference data) received from another information processing apparatus 10 (parent unit, slave unit 10c, or slave unit 10b) It is also a program for storing (saving) in the RAM 14 as drawing data (first drawing data 334, third drawing data 338, or second drawing data 336) of the information processing apparatus 10.

  The screen switching program 322 of the child device 10b or the child device 10c displays the screen displayed on the display 22 of the own device (here, the child device 10b or the child device 10c) as another information processing apparatus 10 (here, the parent device). 10a, slave unit 10c, or slave unit 10b) is a program for switching to the screen displayed.

  6 to 9 are flowcharts showing the drawing control processing of the CPU 12 of the parent device 10a. For example, the drawing application is activated, and the handwriting input mode is selected according to a user instruction or a default setting. Then, as shown in FIG. 6, the CPU 12 of the parent device 10a starts the drawing control process, and executes the initial process in step S1. In the initial processing of step S1, the CPU 12 of the parent device 10a deletes the touch coordinate data 330 in the data storage area 304 or reads the image generation data 332 from the nonvolatile memory, and then the initial touch screen 100. Is displayed on the display 22. That is, the screen data of the initial touch screen 100 as shown in FIG. 2A is generated (drawn) by the drawing control circuit 18 under the instruction of the CPU 12 of the parent device 10 a and output to the display 22. However, when the user instructs to read the stored drawing data, the touch screen 100 including the handwritten image is displayed on the display 22.

  In the next step S3, a base unit storage process (see FIG. 10) described later is performed, and in step S5, it is determined whether or not a first handset request signal has been received from the handset 10b or handset 10c. Here, the CPU 12 of the parent device 10a determines whether or not the transmission / reception data buffer 340 stores the first child device request signal from the child device 10b or the child device 10c. The same applies to the case where it is determined whether other signals have been received.

  If “NO” in the step S5, that is, if the first slave unit request signal is not received from the slave unit 10b or the slave unit 10c, the process proceeds to a step S13 as it is. On the other hand, if “YES” in the step S5, that is, if the first slave unit request signal is received from the slave unit 10b or the slave unit 10c, it is determined whether or not it is the first request in a step S7. In step S7, the CPU 12 of the parent device 10a determines whether or not the number of times the first child device request signal has been received is the first time. However, the determination as to whether or not it is the first time is executed for each of the child device 10b and the child device 10c.

  If “NO” in the step S7, that is, if the number of times the first slave unit request signal is received is the second or later, the difference between the drawing data transmitted up to the previous time and the current first drawing data 334 in a step S9. The data is transmitted and the process proceeds to step S13.

  On the other hand, if “YES” in the step S7, that is, if the number of times the first slave unit request signal is received is the first, the base data (the current first drawing data 334) is transmitted in a step S11, Proceed to step S13.

  In step S13, it is determined whether a second slave unit request signal has been received from slave unit 10b or slave unit 10c. If “NO” in the step S13, that is, if the second slave unit request signal is not received from the slave unit 10b or the slave unit 10c, the process proceeds to a step S17 shown in FIG.

  On the other hand, if “YES” in the step S13, that is, if the second slave unit request signal is received from the slave unit 10b or the slave unit 10c, the difference data is transmitted in a step S15, and the process proceeds to the step S17.

  As shown in FIG. 7, in step S17, it is determined whether or not the touch is on. Here, the CPU 12 of the parent device 10 a determines whether or not the current (current frame) touch coordinate data 330 is stored in the data storage area 304.

  If “NO” in the step S17, that is, if not touch-on, the process returns to the step S3 shown in FIG. On the other hand, if “YES” in the step S17, that is, if the touch is on, it is determined whether or not the screen switching button 102 is touched in a step S19. Here, the CPU 12 of the parent device 10a determines whether or not the touch position indicated by the acquired touch coordinate data 330 indicates the display area of the screen switching button 102. The same applies to the case where it is determined whether or not the button displayed on the touch screen 100 has been touched.

  If “YES” in the step S19, that is, if the screen switching button 102 is touched, the process proceeds to a step S31 shown in FIG. On the other hand, if “NO” in the step S19, that is, if the screen switching button 102 is not touched, it is determined whether or not any button other than the screen switching button 102 is touched in a step S21.

  If “YES” in the step S21, that is, if a button other than the screen switching button 102 is touched, a process corresponding to the other button is executed in a step S23, and the process proceeds to the step S3 shown in FIG. Return. For example, in step S23, the CPU 12 changes line attribute information (line type, line color, line width), copies a handwritten image, or pastes the copied image in accordance with a user operation (instruction). The range of the handwritten image is designated, or the drawing data is stored in a non-volatile memory.

  On the other hand, if “NO” in the step S21, that is, if no buttons other than the screen switching button 102 are touched, it is determined that the handwriting is a touch input, and the touch coordinates are input in the handwriting in a step S25. Remember as. That is, in step S25, the CPU 12 stores the touch coordinate data 330 according to the touch input in the RAM 14 as the first drawing data 334.

  In the next step S27, a handwritten image is displayed according to the touch input. In step S27, under the instruction of the CPU 12, the drawing control circuit 18 draws the screen data of the touch screen 100 including the handwritten image on the VRAM using the image generation data 332 and the first drawing data 334, and outputs it to the display 22. . Accordingly, during handwriting input, a line is drawn by a plurality of points according to touch input, and a handwritten image such as a character is drawn by one or a plurality of lines.

  In step S29, it is determined whether or not the touch is off. Here, the CPU 12 refers to the data storage area 304 to determine whether or not the touch coordinate data 330 of the current frame is stored. If “NO” in the step S29, that is, if the touch-on state continues, the process returns to the step S29. Accordingly, the data about the line being drawn in the first drawing data 334 is updated, and the line is displayed (drawn) according to the touch input. On the other hand, if “YES” in the step S29, that is, if the touch is off, the process returns to the step S3.

  As shown in FIG. 8, in step S31, as shown in FIG. 4B, a thumbnail of the screen displayed on the display 22 of each information processing apparatus 10 is displayed. That is, in step S31, the CPU 12 of the parent device 10a generates thumbnails (first to third selection buttons 120, 122, and 124) using the screen data of the touch screens 100a, 100b, and 100c, and includes the generated thumbnails. The screen data of the touch screen 100a is output to the display 22.

  In the next step S33, it is determined whether or not the thumbnail has been touched. If “NO” in the step S33, that is, if the thumbnail is not touched, the process returns to the step S33 as it is. On the other hand, if “YES” in the step S33, that is, if the thumbnail is touched, it is determined whether or not to switch to the screen of another information processing apparatus 10 in a step S35. Here, CPU 12 of base unit 10a determines whether selection button 122 or 124 is touched.

  If “NO” in the step S35, that is, if the screen is not switched to the screen of the other information processing apparatus 10 (the own screen is displayed), the process proceeds to the step S45 shown in FIG. On the other hand, if “YES” in the step S35, that is, if switching to the screen of another information processing apparatus 10, the thumbnail is deleted in a step S37, and the information corresponding to the nth thumbnail in the step S39. A second master unit request signal is transmitted to the processing device 10. However, in the first embodiment, the first (n = 1) thumbnail is the first selection button 120, the second (n = 2) thumbnail is the second selection button 122, and the third (n = The thumbnail 3) is the third selection button 124, and n = 2 or 3 in step S39. Therefore, the CPU 12 of the parent device 10a transmits a second parent device request signal to the information processing apparatus 10 corresponding to the touched nth thumbnail (nth selection button).

  In step S41, it is determined whether difference data has been received from the slave (10b or 10c) that has transmitted the second master request signal. If “NO” in the step S41, that is, if difference data is not received, the process returns to the step S41 as it is. On the other hand, if “YES” in the step S41, that is, if difference data is received, the nth drawing data is updated in a step S43 shown in FIG. 9, and the process proceeds to a step S45. In step S43, for example, when n = 2, the CPU 12 of the parent device 10a updates the second drawing data 336.

  In step S45, the nth drawing data is output to the display 22. That is, the touch screen 100a of the display 22 of the parent device 10a is switched to the same screen as the touch screen 100b or 100c of the child device 10b or the child device 10c.

  In step S47, it is determined whether or not the process is completed. Here, the CPU 12 of the parent device 10a determines whether an instruction to end the drawing application (drawing control process) is given from the user. If “NO” in the step S47, that is, if not finished, the process returns to the step S3. On the other hand, if “YES” in the step S47, that is, if it is finished, the drawing control process is finished.

  FIG. 10 is a flowchart showing the master storage process shown in step S3 of FIG.

  As shown in FIG. 10, when the CPU 12 of the parent device 10a starts the parent device storage process, it determines whether or not a predetermined time T1 has elapsed in step S61. However, when the drawing control process is started, a timer for counting the fixed time T1 starts counting, and is reset and started every time the fixed time T1 is counted.

  If “NO” in the step S61, that is, if the predetermined time T1 has not elapsed, the process returns to the drawing control process. On the other hand, if “YES” in the step S61, that is, if the predetermined time T1 has elapsed, the first parent device request signal is transmitted to each child device (the child device 10b and the child device 10c) in a step S63. In S65, it is determined whether drawing data (base data or difference data) has been received from each child device (child device 10b and child device 10c).

  If “NO” in the step S65, that is, if there is a slave unit that has not received the drawing data, the process returns to the step S65 as it is. On the other hand, if “YES” in the step S65, that is, if drawing data is received from each slave unit, the received drawing data is saved in a step S67, and the process returns to the drawing control process. However, in step S67, the drawing data is stored (saved) in the RAM 14 by identifying each slave.

  Next, the drawing control process of the CPU 12 of the slave unit 10b will be described. However, since it is the same as the drawing control process of the CPU 12 of the parent device 10a shown in FIGS. In the following, the drawing control process of the CPU 12 of the slave unit 10b will be described, but the same applies to the slave unit 10c.

  FIG. 11 is a flowchart showing a part of an example of the drawing control process of the CPU 12 of the slave unit 10b. FIG. 12 is another part of the drawing control process of the CPU 12 of the slave unit 10b, and is a flowchart subsequent to FIG. 11 and 12, the same processes as those shown in FIGS. 6 and 8 are denoted by the same reference numerals.

  In the drawing control process of the CPU 12 of the slave unit 10b, as can be seen from FIG. 11, the processes of step S91 and step S93 are executed instead of step S3 and step S5 shown in FIG. The process of step S95 is executed. Also, as can be seen from FIG. 12, the process of step S97 is executed instead of step S37 shown in FIG.

  As shown in FIG. 11, the CPU 12 of the child device 10b performs a child device storage process (see FIG. 13) described later in step S91, and receives the first parent device request signal from the parent device 10a in step S93. Determine whether or not.

  If “NO” in the step S93, that is, if the first parent device request signal is not received from the parent device 10a, the process proceeds to the step S95. On the other hand, if “YES” in the step S93, that is, if the first parent device request signal is received from the parent device 10a, the process proceeds to a step S7.

  In step S95, it is determined whether a second master unit request signal has been received from master unit 10a. If “YES” in the step S95, that is, if the second parent device request signal is received from the parent device 10a, the process proceeds to a step S15. On the other hand, if “NO” in the step S95, that is, if the second parent device request signal is not received from the parent device 10a, the process proceeds to the step S17 shown in FIG.

  Further, as shown in FIG. 12, in step S97, the second slave unit request signal is transmitted to the information processing apparatus 10 (here, the master unit 10a or the slave unit 10c) corresponding to the nth thumbnail, and step S39 is performed. Proceed to

  FIG. 13 is a flowchart showing the slave unit storage process of the CPU 12 of the slave unit 10b shown in step S91 of FIG.

  As shown in FIG. 13, when the CPU 12 of the child device 10b starts the child device saving process, in step S121, the CPU 12 determines whether or not a predetermined time T2 has elapsed. However, when the drawing control process is started, a timer for counting the fixed time T2 starts counting, and is reset and started every time the fixed time T2 is counted. If “NO” in the step S121, that is, if the predetermined time T2 has not elapsed, the process returns to the drawing control process of FIG.

  On the other hand, if “YES” in the step S121, that is, if the predetermined time T2 has elapsed, a first slave unit request signal is transmitted to the master unit 10a in a step S123, and drawing data is transmitted from the master unit 10a in a step S125. It is determined whether (base data or difference data) has been received.

  If “NO” in the step S125, that is, if drawing data is not received from the parent device 10a, the process returns to the step S125 as it is. On the other hand, if “YES” in the step S125, that is, if drawing data is received from the parent device 10a, the received drawing data is saved in the step S127, that is, the first drawing data 334 is stored in the RAM 14 or After updating, the process returns to the drawing control process of FIG.

  In addition, although detailed description about the drawing control process of CPU12 of the subunit | mobile_unit 10c is abbreviate | omitted, what is necessary is just to replace the subunit | mobile_unit 10b and the subunit | mobile_unit 10c in description of drawing control processing of CPU12 of said subunit | mobile_unit 10b.

  According to the first embodiment, in accordance with an instruction from the user, the drawing data of the other information processing apparatus 10 stored in the information processing apparatus 10 is output to the display 22, whereby the screen of the other information processing apparatus 10 is displayed. Can be displayed. Therefore, the screen of the information processing apparatus 10 can be switched to a screen displayed on another information processing apparatus 10 in a short time.

  Further, according to the first embodiment, after the base data is transmitted / received between the plurality of information processing apparatuses 10, the difference data of the drawing data transmitted / received up to the previous time is transmitted / received. The amount of data transmitted and received between them can be reduced.

  Furthermore, according to the first embodiment, since the plurality of information processing apparatuses 10 are connected by a LAN cable, even when the plurality of information processing apparatuses 10 are installed at remote locations, the screen can be easily switched. it can.

  In the first embodiment, the information processing system 200 including the three information processing apparatuses 10 has been described. However, as long as at least two information processing apparatuses 10 are included, four or more information processing systems 10 may be included. One of the plurality of information processing devices 10 functions as the parent device 10a.

  In the first embodiment, every time the predetermined time T1 elapses, the master unit 10a requests the slave unit 10b and the slave unit 10c to transmit drawing data (base data or difference data). It is not necessary to be limited to. The slave unit 10b and the slave unit 10c may transmit drawing data (base data or difference data) to the master unit 10a every predetermined time T1. Alternatively, the slave unit 10b and the slave unit 10c may transmit the base data and the difference data to the master unit 10a when the base data and the difference data reach a predetermined data amount, respectively.

In the first embodiment, the information processing apparatus 10 returns to the state before switching the screen (the original touch screen 100) by performing an operation of switching to the own screen after switching the screen once. However, after the screen is switched, a button for returning to the touch screen 100 may be displayed so that the screen can be returned to the original touch screen 100 by a single operation.
<Second embodiment>
The information processing apparatus 10 according to the second embodiment is the first implementation except that the screen of the master unit 10a and the screen of the slave unit 10b or the slave unit 10c are switched in response to a user operation on the master unit 10a. Since it is the same as the information processing apparatus 10 of the example, the contents different from those of the first embodiment will be described, and redundant description will be omitted.

  FIG. 14A is an illustrative view showing an example of the touch screen 100 displayed on the display 22 in the information processing system 200 of the second embodiment, and FIG. 14B is displayed on the display 22 in the information processing system 200. FIG. 10 is an illustrative view showing another example of the touch screen 100. However, FIG. 14A shows a touch screen 100a displayed on the display 22 of the parent device 10a after the screen switching button 102 is touched.

  As shown in FIG. 14A, for example, the user touches the second selection button 122 among the first to third selection buttons 120, 122, and 124 displayed on the touch screen 100a of the parent device 10a. As shown in FIG. 14B, the touch screen 100a of the parent device 10a and the touch screen 100b of the child device 10b are switched. That is, the same screen as the touch screen 100b of the slave unit 10b before replacement (change) is displayed as the touch screen 100a of the master unit 10a, and the touch screen 100a of the master unit 10a before replacement is displayed as the touch screen 100b of the slave unit 10b. The same screen is displayed. Accordingly, the touch screen 100a of the parent device 10a is switched to the touch screen 100b of the child device 10b, and the touch screen 100b of the child device 10b is switched to the touch screen 100a of the parent device 10a. As a result, the touch of the parent device 10a is performed. The screen 100a and the touch screen 100b of the child device 10b are switched.

  In the second embodiment, the parent device 10a not only requests the child device 10b or child device 10c, which is the partner to replace the screen, to transmit the difference data, but also sends the child device 10b or child device 10c to the own device (parent device). A signal for requesting switching to the screen of the device 10a) (hereinafter referred to as "third master device request signal") and the difference data of the own device in response to a request from the slave device 10b or the slave device 10c. Send.

  On the other hand, when receiving the third parent device request signal, the child device 10b or the child device 10c transmits the second child device request signal to the parent device 10a. In addition, when receiving the difference data from the parent device 10a, the child device 10b updates the first drawing data 334 of the parent device 10a and outputs the updated first drawing data 334 to the display 22.

  The operations as described above of the parent device 10a, the child device 10b, and the child device 10c are realized by the CPU 12 executing the information processing program stored in the RAM 14 as in the first embodiment. However, in the second embodiment, the screen switching program 322 of the parent device 10a is also a program for transmitting a third parent device request signal when an instruction for screen switching is given from the user. In the second embodiment, when the slave unit 10b or the differential transmission / reception program 318 of the slave unit 10c receives the third master unit request signal from the master unit 10a, it transmits the second slave unit request signal to the master unit 10a. In response to this, it is also a program for receiving the difference data transmitted from the parent device 10a.

  Hereinafter, the drawing control process of the second embodiment will be described in detail. However, since the drawing control process is the same as that of the first embodiment shown in FIGS. Omitted. The same reference numerals are assigned to the same processes as the drawing control process of the first embodiment.

  FIG. 15 is a part of the drawing control process of the CPU 12 of the base unit 10a in the second embodiment, and is a flowchart subsequent to FIG.

  As can be seen from FIG. 15, in the second embodiment, in the drawing control process of the CPU 12 of the master unit 10a shown in FIGS. 6 to 9, the processes of steps S151, S153, and S155 are performed between steps S37 and S39. Is added.

  As shown in FIG. 15, when the CPU 12 of the parent device 10a deletes the thumbnail in step S37, in step S151, the CPU 12 transmits a third parent device request signal to the information processing apparatus 10 corresponding to the nth thumbnail.

  In step S153, it is determined whether the second slave unit request signal is received from the information processing apparatus 10 corresponding to the nth thumbnail. If “NO” in the step S153, that is, if the second slave unit request signal is not received, the process returns to the step S153 as it is.

  On the other hand, if “YES” in the step S153, that is, if the second slave unit request signal is received from the information processing apparatus 10 corresponding to the nth thumbnail, the information processing apparatus 10 corresponding to the nth thumbnail is received in a step S155. The difference data is transmitted to step S39, and the process proceeds to step S39.

  The processing other than the above is the same as the drawing control processing of the CPU 12 of the parent device 10a shown in the first embodiment.

  FIG. 16 is a part of the drawing control process of the CPU 12 of the slave unit 10b in the second embodiment, and is a flowchart subsequent to FIG. In the following, the drawing control process of the CPU 12 of the slave unit 10b will be described, but the same applies to the slave unit 10c.

  As can be seen from FIG. 16, in the second embodiment, in the drawing control process of the CPU 12 of the slave unit 10b shown in FIGS. 6, 9, 11, and 12, step S171 is performed between step S15 and step S17. , S173, S175, S177, and S179 are added.

  As shown in FIG. 16, the CPU 12 of the child device 10b determines whether or not a third parent device request signal has been received in step S171. If “NO” in the step S171, that is, if the third master request signal is not received, the process proceeds to a step S17 as it is.

  On the other hand, if “YES” in the step S171, that is, if the third parent device request signal is received, the second child device request signal is transmitted to the parent device 10a in a step S173, and the parent device 10a is transmitted in a step S175. It is determined whether or not difference data has been received. If “NO” in the step S175, that is, if difference data is not received from the parent device 10a, the process returns to the same step S175.

  On the other hand, if “YES” in the step S175, that is, if difference data is received from the parent device 10a, the first drawing data 334 is updated in a step S177, and the updated first drawing data 334 is displayed on the display 22 in a step S179. And proceed to step S17.

  The processing other than the above is the same as the drawing control processing of the CPU 12 of the slave unit 10b shown in the first embodiment.

  Although a detailed description of the drawing control process of the CPU 12 of the slave unit 10c is omitted, the slave unit 10b and the slave unit 10c may be interchanged in the description of the drawing control process of the CPU 12 of the slave unit 10b.

According to the second embodiment, each information processing apparatus 10 stores the drawing data of the other information processing apparatus 10 with each other. Therefore, by operating the master unit 10a, the screen of the master unit 10a and the slave unit 10b Or the screen of the subunit | mobile_unit 10c can be replaced in a short time.
<Third embodiment>
The information processing apparatus 10 according to the third embodiment is the same as the information processing apparatus 10 except that the screen of the master unit 10a and the screen of the slave unit 10b or the slave unit 10c are switched according to the operation of the slave unit 10b or the slave unit 10c. Since it is the same as the information processing apparatus 10 of the first embodiment, the contents different from the first embodiment will be described, and redundant descriptions will be omitted. Further, since the screen replacement is the same as that of the second embodiment, the description of the same content as that described in the second embodiment is omitted.

  FIG. 17A is an illustrative view showing one example of a touch screen 100 displayed on the display 22 in the information processing system 200 of the third embodiment. FIG. 17B is an illustrative view showing another example of the touch screen 100 displayed on the display 22 in the information processing system 200. However, FIG. 17A shows a touch screen 100b displayed on the display 22 of the child device 10b after the screen switching button 102 is touched. However, in the third embodiment, the screen of the master unit 10a and the screen of the slave unit 10b or the slave unit 10c are switched in accordance with the operation of the slave unit 10b or the slave unit 10c. Then, the thumbnail (third selection button 124) of the screen of the slave unit 10c) is not displayed.

  As shown in FIG. 17A, for example, when the user touches the first selection button 120 from the first selection button 120 and the second selection button 124 displayed on the touch screen 100b of the child device 10b, As shown in FIG. 17B, the touch screen 100a of the slave unit 10a and the touch screen 100b of the slave unit 10b are switched.

  Therefore, in the third embodiment, the slave unit 10b or the slave unit 10c not only requests the master unit 10a, which is the partner whose screen is to be changed, to transmit the difference data, but also transmits the difference data to the master unit 10a. A signal requesting switching to the screen of the slave unit 10c) (hereinafter referred to as “third slave unit request signal”) is transmitted, and difference data of the own unit is transmitted in response to a request from the master unit 10a.

  On the other hand, when receiving the third slave unit request signal, master unit 10a transmits the second slave unit request signal to slave unit 10b or slave unit 10c that is the transmission source of the third slave unit request signal. Further, when receiving the difference data from the child device 10b or the child device 10c, the parent device 10a updates the second drawing data 336 of the child device 10b or the third drawing data 338 of the child device 10c, and the updated drawing data ( 336 or 338) is output to the display 22.

  The above-described operations of the parent device 10a, the child device 10b, and the child device 10c are realized by the CPU 12 executing the information processing program stored in the RAM 14 as in the first and second embodiments. . However, in the third embodiment, when the differential transmission / reception program 318 of the parent device 10a receives the third child device request signal from the child device 10b or the child device 10c, the difference transmission / reception program 318 sends a request to the transmission child device 10b or child device 10c. It is also a program for transmitting the two master unit request signal and receiving the difference data transmitted from the slave unit 10b or the slave unit 10c in response to this. In the third example, the screen switching program 322 of the slave unit 10b or the slave unit 10c is also a program for transmitting a third slave unit request signal when an instruction to switch the screen is given by the user.

  FIG. 18 is a part of the drawing control process of the CPU 12 of the parent device 10a in the third embodiment, and is a flowchart subsequent to FIG. The drawing control process of the third embodiment will be described below, but the description of the same contents as those described in the first and second embodiments will be omitted.

  As can be seen from FIG. 18, in the third embodiment, in the drawing control process of the CPU 12 of the parent device 10a shown in FIGS. 6 to 9, steps S201, S203, S205, and S207 are performed between steps S15 and S17. And the process of S209 is added.

  Accordingly, as shown in FIG. 18, the CPU 12 of the parent device 10a determines whether or not a third child device request signal has been received in step S201. If “NO” in the step S201, that is, if the third slave unit request signal is not received, the process proceeds to a step S17 as it is.

  On the other hand, if “YES” in the step S201, that is, if a third slave unit request signal is received, a second slave unit request is sent to the slave unit 10b or the slave unit 10c that is the transmission source of the third slave unit request signal in a step S203. In step S205, it is determined whether difference data has been received from the child device 10b or the child device 10c. If “NO” in the step S205, that is, if difference data is not received from the child device 10b or the child device 10c, the process returns to the same step S205.

  On the other hand, if “YES” in the step S205, that is, if difference data is received from the child device 10b or the child device 10c, the second drawing data 336 or the third drawing data 338 is updated in a step S207, and in step S209, The updated second drawing data 336 or third drawing data 338 is output to the display 22, and the process proceeds to step S17.

  The processing other than the above is the same as the drawing control processing of the CPU 12 of the parent device 10a shown in the first embodiment.

  FIG. 19 is a part of the drawing control process of the CPU 12 of the slave unit 10b in the third embodiment, and is a flowchart subsequent to FIG. In the following, the drawing control process of the CPU 12 of the slave unit 10b will be described, but the same applies to the slave unit 10c.

  As can be seen from FIG. 19, in the drawing control processing of the CPU 12 of the child device 10b or the child device 10c shown in FIGS. 6, 9, 11, and 12, steps S221 and S223 are performed between steps S37 and S97. And the process of S225 is added.

  Accordingly, as shown in FIG. 19, when the CPU 12 deletes the thumbnail in step S37, the CPU 12 transmits a third child device request signal to the parent device 10a in step S221.

  In step S223, it is determined whether a second master unit request signal has been received from master unit 10a. If “NO” in the step S223, that is, if the second parent device request signal is not received from the parent device 10a, the process returns to the same step S223.

  On the other hand, if “YES” in the step S223, that is, if the second parent device request signal is received from the parent device 10a, the difference data is transmitted to the parent device 10a in a step S225, and the process proceeds to the step S97.

  The processing other than the above is the same as the drawing control processing of the CPU 12 of the slave unit 10b shown in the first embodiment.

  Although a detailed description of the drawing control process of the CPU 12 of the slave unit 10c is omitted, the slave unit 10b and the slave unit 10c may be interchanged in the description of the drawing control process of the CPU 12 of the slave unit 10b.

  Also in the third embodiment, as in the second embodiment, the screen of the parent device 10a and the screen of the child device 10b or the child device 10c can be switched in a short time.

  In the third embodiment, the screen of the master unit 10a and the screen of the slave unit 10b or the slave unit 10c are switched. However, the present invention is not limited to this. For example, the screen of the slave unit 10b and the screen of the slave unit 10c may be switched.

  In such a case, when the screen switching button 102 is operated, the first to third selection buttons 120 to 124 are displayed on the touch screen 100 of the child device 10b or the child device 10c (same as the parent device 10a). . Further, in the slave unit 10b and the slave unit 10c that are requested to switch the screen, the same processing as in steps S201 to S209 shown in FIG. 18 is further executed. Further, the slave unit 10b or the slave unit 10c requesting the screen replacement transmits a third slave unit request signal to the other slave unit 10c or the slave unit 10b, or from the other slave unit 10c or the slave unit 10b. It is determined whether the second handset request signal has been received or the difference data is transmitted to another handset 10c or handset 10b. That is, the contents of the processing in steps S221 to S225 in FIG. 19 are different from the case where the screen is exchanged with the parent device 10a.

  Specifically, the other handset 10c or handset 10b that is requested to replace the screen determines whether or not the third handset request signal has been received (S201), and has received the third handset request signal. Accordingly, the second slave unit request signal is transmitted to the slave unit 10b or the slave unit 10c that requested the third slave unit request signal (S203). Then, the other child device 10c or child device 10b determines whether or not the difference data has been received (S205), and updates the second drawing data 336 or the third drawing data 338 in response to the reception of the difference data. Then, the second drawing data 336 or the third drawing data 338 is output to the display (S209).

  Further, the child device 10b or the child device 10c transmits a third child device request signal to the other child device 10c or the child device 10b (S221), and the second child device request is transmitted from the other child device 10c or the child device 10b. It is determined whether or not a signal has been received (S223), and the difference data is transmitted to another child device 10c or child device 10b in response to the reception of the second child device request signal (S225).

  The modifications of the second embodiment and the third embodiment can be employed at the same time.

  The screen configurations and specific numerical values given in the above-described embodiments are examples, and can be appropriately changed according to the actual product. Moreover, when the same effect is acquired, the order of each step shown to the flowchart may be changed suitably.

10 ... Information processing device 12 ... CPU
14 ... RAM
DESCRIPTION OF SYMBOLS 16 ... Touch panel control circuit 18 ... Drawing control circuit 20 ... Touch panel 22 ... Display 100 ... Touch screen 102 ... Screen switching button 110 ... Touch pen 120 ... 1st selection button 122 ... 2nd selection button 124 ... 3rd selection button

Claims (10)

An information processing apparatus that includes an input detection unit that detects an input instruction by a user and a communication unit that communicates with another information processing apparatus, and displays an image on a display device,
Data receiving means for receiving data about the image transmitted from the other information processing apparatus;
Data transmitting means for transmitting at least data about the image of the own device to the other information processing apparatus; and displaying the image for the other information processing apparatus in response to an input instruction detected by the input detection means Comprising screen switching means for displaying on the device;
The screen switching means includes selection image display means for displaying at least a selection image for selecting an image for the other information processing apparatus on the display device in response to an input instruction detected by the input detection means. An information processing apparatus that displays an image of the other information processing apparatus instructed by the selected image in accordance with the input instruction detected by the input detection unit on the display apparatus.   The information processing apparatus according to claim 1, wherein the selected image is a thumbnail of an image of the other information processing apparatus. The information processing apparatus according to claim 1, wherein the image is a handwritten image handwritten by the user.   The information according to any one of claims 1 to 3, wherein the data transmission means transmits difference data about a difference from the data about the image transmitted until the previous time to the other information processing apparatus after the second time. Processing equipment. The information processing device stores drawing data for the image in a storage device so as to be identifiable,
Data storage means for storing data about the image received by the data receiving means in the storage device so as to be identifiable for each of the other information processing devices;
The said screen switching means displays the image about said other information processing apparatus on the said display apparatus using the data about the said image memorize | stored in the said memory | storage device. The information processing apparatus described in 1. When displaying an image about the other information processing device on the display device by the screen switching unit, the image processing device further includes a data requesting unit that requests the other information processing device to transmit data about the image,
6. The data transmission unit according to claim 1, wherein, in response to a request from the other information processing apparatus, the data transmission unit transmits at least data about the image of the own apparatus to the other information processing apparatus as a request source. The information processing apparatus described in 1.   The screen switching means receives the difference data transmitted from the other information processing apparatus in response to the request by the data requesting means, and updates the data on the image image for the other information processing apparatus. The information processing apparatus according to claim 6, wherein an image about the other information processing apparatus is displayed on the display device using the updated data about the image. An information processing program including an input detection unit that detects an input instruction by a user and a communication unit that communicates with another information processing device, and is executed by the information processing device that displays an image on a display device,
In the processor of the information processing apparatus,
A data receiving step of receiving data about the image transmitted from one or more other information processing apparatuses;
A data transmission step of transmitting data about at least the image of the own device to the other information processing apparatus;
In accordance with the input instruction detected by the input detection means, at least a selection image display step for displaying a selection image for selecting an image for the other information processing apparatus on the display device, and by the input detection means An information processing program for executing a screen switching step of displaying an image of the other information processing apparatus instructed by the selected image on the display device in accordance with a detected input instruction. An information processing method for an information processing device that includes an input detection unit that detects an input instruction by a user and a communication unit that communicates with another information processing device, and displays an image on a display device,
(A) receiving data about the image transmitted from one or more other information processing apparatuses;
(B) transmitting at least data about the image of the own device to the other information processing apparatus;
(C) In response to an input instruction detected by the input detection means, at least a selection image for selecting an image for the other information processing device is displayed on the display device, and (d) the input detection An information processing method for displaying, on the display device, an image of the other information processing apparatus designated by the selected image in response to an input instruction detected by the means. An information processing system comprising input detecting means for detecting an input instruction by a user and communication means for communicating with another information processing apparatus, and comprising a plurality of information processing apparatuses for displaying an image on a display device,
One first information processing device that functions as a parent device among the plurality of information processing devices, and one or more second information processing devices that function as slave devices among the plurality of information processing devices,
The first information processing apparatus
First data receiving means for receiving data about the image transmitted from the second information processing apparatus;
First data transmitting means for transmitting data about the image of the first information processing apparatus and data about the image of another second information processing apparatus to the second information processing apparatus; and the input detection of the own apparatus First screen switching means for displaying an image of the other second information processing device on the display device of the own device in response to an input instruction detected by the means;
The first screen switching means selects at least a selection image for selecting an image for the other second information processing apparatus according to the input instruction detected by the input detection means of the own apparatus. Including a first selection image display means for displaying on the display device, and an image of the other second information processing apparatus indicated by the selection image in response to an input instruction detected by the input detection means of the own device Display on your display device,
The second information processing apparatus
Second data transmission means for transmitting data about the image displayed on the display device of the own device to the first information processing device;
Second data receiving means for receiving data about the image transmitted by the first data transmitting means, and the first information processing apparatus or the other according to an input instruction detected by the input detecting means of the own device A second screen switching means for displaying an image of the second information processing device on the display device of the own device,
The second screen switching means is for selecting at least an image of the first information processing apparatus or the other second information processing apparatus according to an input instruction detected by the input detection means of the own device. The first information processing apparatus including second selection image display means for displaying a selected image on the display apparatus of the own apparatus, and instructed by the selection image according to an input instruction detected by the input detection means of the own apparatus Or the information processing system which displays the image about the said other 2nd information processing apparatus on the said display apparatus.

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