JP6722240B2 - Information processing apparatus, information processing program, information processing method, and information processing system - Google Patents

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 who is viewing the video displayed on the display screen are displayed. On the basis of this, a video that attracts interest of a plurality of viewers is detected, and when the detected video is displayed in the sub display area, the videos are switched so that the video is displayed in the main display area.

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

JP 2006-119408 A JP, 2002-268868, A

However, in Patent Document 1, 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 it is assumed that the display contents are switched (switched) between a plurality of apparatuses. It has not been.

In this regard, in Patent Document 2, since the main monitor and the plurality of sub-monitors are provided, the display content can be switched between the main monitor and the sub-monitors or between the sub-monitors. If multiple monitors are installed separately 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.) becomes longer and block noise easily occurs due to transmission loss.

Therefore, in place 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 exchange video (image) data between the video display devices to switch the display contents. However, in such a case, as the display content increases, the amount of video (image) data transmitted and received between the video display devices increases, so that traffic is mixed and the video (image) data is transmitted and received. It takes time. That is, it takes time to switch the display contents between the 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 that can switch screens between a plurality of devices in a short time.

An information processing apparatus according to a first aspect of the invention includes an input detection unit that detects an input instruction from a user and a communication unit that communicates with another information processing apparatus, and draws drawing data about a handwritten image handwritten by the user. An information processing device that stores a handwritten image on a display device while storing the data in a distinguishable manner, and receives the drawing data transmitted from another information processing device. Data storage means for storing drawing data in a storage device so as to be distinguishable for each other information processing apparatus, data transmission means for transmitting at least drawing data of the own apparatus to another information processing apparatus, and input detected by input detection means A screen switching unit that displays a handwritten image of another information processing device on the display device by using the drawing data stored in the storage device according to the instruction is provided, and the data transmission unit transmits the second time and thereafter up to the previous time. The difference data regarding the difference from the drawing data is transmitted to another information processing apparatus.

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

In the information processing apparatus of the second invention, when the screen switching unit displays the handwritten image of the other information processing apparatus on the display device, the data requesting unit requests the other information processing apparatus to transmit the drawing data of the handwritten image. Is further provided. Further, the data transmitting unit transmits at least the drawing data of the own device to another requesting information processing device in response to a request from another information processing device.

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

In the second and third inventions as well, similar to the first invention, the screens can be switched between other information processing devices in a short time.

In the information processing apparatus of the fourth invention, the screen switching means displays at least a selection image for selecting a handwritten image of another information processing apparatus on the display device according to the input instruction detected by the input detection means. A display device including a selection image display unit for displaying, and a handwritten image of another information processing device instructed by the selection image according to the input instruction detected by the input detection unit, using the drawing data stored in the storage device. To display.

In the information processing device of the fifth invention, the selected image is a thumbnail of a handwritten image of another information processing device 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.

A sixth aspect of the present invention includes an input detection unit that detects an input instruction from a user and a communication unit that communicates with another information processing apparatus, and stores drawing data of a handwritten image handwritten by the user in a distinguishable manner. An information processing program executed by an information processing device that stores a handwritten image on a display device while being stored in the device, and is a drawing transmitted from one or a plurality of other information processing devices to a processor of the information processing device. A data receiving step of receiving data, a data storing step of storing the drawing data received in the data receiving step in a storage device so as to be distinguishable for each of the other information processing devices, and at least transmitting the drawing data of the own device to the other information processing device And a screen switching step of displaying a handwritten image of another information processing device on the display device using the drawing data stored in the storage device according to the input instruction detected by the input detection means. In the data transmission step, after the second time, difference data regarding the difference from the drawing data transmitted up to the previous time is transmitted to another information processing apparatus.

A seventh aspect of the invention includes an input detection unit that detects an input instruction from the user and a communication unit that communicates with another information processing device, and stores drawing data of a handwritten image handwritten by the user in a distinguishable manner. An information processing method for an information processing device, which stores a handwritten image on a display device while storing the image in a device, comprising: (a) receiving drawing data transmitted from one or more other information processing devices; ) The drawing data received in step (a) is stored in a storage device so as to be distinguishable for each of the other information processing devices, (c) at least the drawing data of its own device is transmitted to the other information processing device, and (d) In response to the input instruction detected by the input detection means, a handwritten image of another information processing device is displayed on the display device using the drawing data stored in the storage device. The difference data regarding the difference from the drawing data transmitted up to this point is transmitted to another information processing apparatus.

An eighth aspect of the present invention includes an input detection unit that detects an input instruction from the user and a communication unit that communicates with another information processing apparatus, and stores drawing data of a handwritten image handwritten by the user in a distinguishable manner. An information processing system comprising a plurality of information processing devices for storing handwritten images on a display device while storing the same in a device, wherein one first information processing device that functions as a master unit among the plurality of information processing devices, and A first data receiving means for receiving drawing data transmitted from the second information processing device, the first information processing device including at least one second information processing device functioning as a child device of the second information processing device, 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 distinguishable for each second information processing device, the drawing data of the first information processing device and other second information A first data transmission unit that transmits the drawing data of the processing device to the second information processing device, and a handwritten image of another second information processing device according to the input instruction detected by the input detection unit of the own device. A first screen switching means for displaying on the display device of the own device by using the drawing data of the other second information processing device stored in the storage device of the first data transmission device, The difference data regarding the difference from the drawing data transmitted to the second information processing apparatus, and the second information processing apparatus transmits the drawing data displayed on the display device of the second information processing apparatus to the first information processing apparatus. 2 data transmitting means, 2nd data receiving means for receiving drawing data transmitted by the 1st data transmitting means, drawing data received by the 2nd data receiving means for the first information processing device and other second information processing device A second data storage unit that stores the data in a storage device of its own device so that the first information processing device or another second information processing device can be identified according to an input instruction detected by the input detection device of the own device. A second screen switching means for displaying the handwritten image on the display device of the own device by using the drawing data of the first information processing device or the other second information processing device stored in the storage device of the own device; From the second time onward, the data transmitting means transmits to the first information processing device difference data regarding the difference from the drawing data transmitted up to the previous time.

Also in the sixth to eighth inventions, the screens can be switched between a plurality of information processing devices in a short time, similarly to the first invention.

According to the present invention, it is possible to switch screens between other information processing devices in a short time.

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

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

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

Referring to FIG. 1, an information processing device 10 according to a 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 illustration is omitted, the information processing apparatus 10 is also provided with a non-volatile memory such as an HDD and a ROM, and is connected to the CPU 12 via the bus 30.

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

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

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

The touch panel control circuit 16 applies a necessary voltage or 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 type such as a capacitance type, an electromagnetic induction type, a resistive film type, an infrared type can be used. In the first embodiment, as the touch panel 20, a capacitance type 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, and under the instruction of the CPU 12, the GPU uses the handwriting input data and the image generation data 332 (see FIG. 5) stored in the RAM 14 to display a screen on the display 22. Screen data for displaying (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.

Another information processing apparatus 10 is communicably connected to the I/F (interface) circuit 24 via a communication cable (for example, a LAN cable or the like). (See Figure 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 the touch coordinate data corresponding to the touch position to the CPU 12. The CPU 12 draws (displays) a handwritten character or the like 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, the drawing control circuit 18 draws a handwritten character or the like on the VRAM, and the image data corresponding to the image including the handwritten character or 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 will be referred to as a “handwritten image” on the assumption that the user handwrites the character.

FIG. 2A is an illustrative view showing an example of the touch screen 100 (initial screen) before handwriting is started. That is, FIG. 2A is an example of the touch screen 100 displayed on the display 22 by executing the drawing application, and shows the initial touch screen 100 when the handwriting input mode is started. Further, 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 the line is handwritten (blackboard).

As shown in FIG. 2A, for example, at the beginning of the handwriting input mode, the touch screen 100 of a blank page on which a handwritten image is not displayed is displayed on the display 22. However, when the stored drawing data of the 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 below.

Further, as shown in FIG. 2A, an image (icon) of a button (function button) exhibiting a predetermined function is displayed at the left end portion of the touch screen 100. In the first embodiment, the 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 device 10.

Although illustration is omitted, on the touch screen 100, attribute buttons for selecting drawing attributes such as line type, line width (thickness), and line color, and other functions (open new page, open 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. Operations (inputs) using the touch panel 20 include taps (short press), slides (drag), flicks, long touches (long press), etc. In the first embodiment, these are referred to as “touch input” or simply. Collectively referred to as "input". In addition, the change from the state where the touch panel 20 is not touched to the touch state is called touch-on (pen down), and the change from the state where the touch panel 20 is touched to the non-touch state is called touch-off (pen Up). In response to continuous touch input, that is, input by sliding or flicking, the touch panel 20 outputs the touch coordinate data corresponding to the current touch position in a cycle shorter than a predetermined cycle. For example, the predetermined cycle is one to several frames, and one frame is 1/30 second, 1/60 second or 1/120 second.

In a general electronic blackboard, which is an example of the information processing device 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, it is assumed that a plurality of information processing devices 10 as described above are used in a large classroom or the like. When a lesson is advanced by a user such as a teacher or a student using these information processing devices 10, for example, it may be 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 the front of the classroom wants to proceed with the lesson according to the content displayed on the screen of the information processing apparatus 10 installed in the rear of the classroom, the content is installed in the front of the classroom. This is because if the screen is displayed on screen 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 devices 10 installed in the classroom are communicatively connected using a LAN cable (and HUB (router)). Then, when it is desired to switch the screen of a certain information processing device 10 to the screen of another information processing device 10, the certain information processing device 10 displays data of the content displayed on the screen of the other information processing device 10. (Screen data) may be received and the received screen data may be output to the display 22 of the certain information processing device 10.

However, when the screen of a certain information processing device 10 is switched to the screen of another information processing device 10, if the amount of screen data to be transmitted and received is large, it takes time to transmit and receive the screen data. Therefore, it takes time to switch the screen. When the screen of a certain information processing device 10 and the screen of another information processing device 10 are exchanged, it takes more time to transmit and receive the screen data. In this way, the class may not be able to proceed smoothly.

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

FIG. 3 is an illustrative view showing one example of the 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 devices 10, and each of the three information processing devices 10 is a LAN (in some cases, the Internet). A communicable connection is made via a simple network 202. In the first embodiment, the three information processing apparatuses 10 include one main information processing apparatus 10a (hereinafter, referred to as "parent apparatus 10a") and two sub information processing apparatuses 10b (hereinafter, referred to as "main apparatus 10a"). , "Child device 10b") and an information processing device 10c (hereinafter, "child device 10c"). In the first embodiment, the master unit 10a, the slave unit 10b, and the slave unit 10c are connected to the network 202 via a LAN cable. However, the master device 10a, the slave device 10b, and the slave device 10c may be wirelessly connected to the network 202.

In the following, if it is not necessary to distinguish between the parent device 10a, the child device 10b, and the child device 10c, the information processing device 10 will be simply referred to.

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

Further, in the master unit 10a, the slave unit 10b, and the slave unit 10c of the first embodiment, drawing data other than that of the own unit are periodically saved. That is, the drawing data of the child device 10b and the child device 10c are periodically stored in the parent device 10a. Further, the drawing data of the parent device 10a and the child device 10c is periodically stored in the child device 10b, and the 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 operate from the master unit 10a to the master unit 10a and other slave units. The drawing data of the machine (10c or the child machine 10b) is acquired.

More specifically, the master device 10a sends a signal requesting a handwritten image to the slave devices 10b and 10c at fixed time intervals T1 (for example, several minutes to 5 minutes) (hereinafter, “first master device request”). Signal))). In response to this, the child device 10b and the child device 10c transmit the drawing data to the parent device 10a. However, the parent device 10a does not transmit the first parent device request signal to the child device 10b and the child device 10c, but the child device 10b and the child device 10c draw the drawing data in the parent device 10a at regular time intervals 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, the slaves 10b and 10c transmit all of their drawing data (hereinafter referred to as "base data") when the drawing data is transmitted for the first time (when the first master request signal is received). Is transmitted, and after the second time, 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 is transmitted. Further, in the parent device 10a, the drawing data (base data and difference data) is stored in the RAM 14 in a distinguishable manner for each of the parent device 10a, the child device 10b, and the child device 10c. This also applies to the slaves 10b and 10c described later.

The child device 10b transmits a signal requesting drawing data (hereinafter, referred to as “first child device request signal”) to the parent device 10a at regular time intervals T2. In response to this, the parent device 10a transmits the drawing data of the parent device 10a and the other child device (here, the child device 10c) to the child device 10b. However, instead of the slave 10b transmitting the first slave request signal to the master 10a, the master 10a may transmit the drawing data to the slave 10b at regular time intervals T2. The child device 10b receives each drawing data of the parent device 10a and the child device 10c transmitted from the parent device, and stores each received drawing data in the RAM 14. However, when the master device 10a transmits the drawing data (receives the first slave device request signal) for the first time, it transmits the base data of its own device and the base data of 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 child device is transmitted.

Although detailed description is omitted, the slave 10c is similar to the slave 10b.

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

As described above, since the parent device 10a, the child device 10b, and the child device 10c transmit and receive only the difference data after the second time, the data amount can be reduced. Further, since the master device 10a, the slave device 10b, and the slave device 10c each store drawing data of another information processing device 10, it is necessary to acquire drawing data from another information processing device 10 when switching screens. The screen can be switched in a short time without any problem.

Next, the screen switching will be specifically described. 4A, 4B, and 4C are touch screens 100 (100a, 100b, 100c) displayed on the respective displays 22 of the master device 10a, the slave device 10b and the slave device 10c in the information processing system 200. It is an illustration figure which shows the example of. However, FIGS. 4A to 4C only show how the screens are switched, so a handwritten image with a small amount of data is shown. In addition, hereinafter, screens displayed on the displays 22 of the master device 10a, the slave device 10b, and the slave 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 the touch screens 100a, 100b, and 100c, the touch screens 100 will be simply referred to as the touch screen 100.

For example, as shown in FIG. 4(A), when the screen switching button 102 is touched (selected) on the master device 10a, the first selection button 120 is displayed at the top of the touch screen 100a as shown in FIG. 4(B). , 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 of the touch screens 100a, 100b, and 100c, respectively.

Then, 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, a child device is displayed. The same screen as the touch screen 100b of 10b is displayed. That is, the screen of the master device 10a is switched to the screen of the slave device 10b.

Although detailed description is omitted, the same applies when switching the screen of the master device 10a to the screen of the slave device 10c.

Here, as described above, since the master device 10a is configured to acquire drawing data (difference data) from the slave device 10b and the slave device 10c at regular time intervals T1, the time point when the screen switching is instructed. In the above, the drawing data of the child devices 10b and 10c may not be the latest data. Therefore, in the first embodiment, when the master device 10a is instructed to switch the screen, the master device 10a sends a signal (hereinafter, referred to as “the 2 parent device request signal”), the difference data is received from the child device 10b or the child device 10c, and the drawing data of the child device 10b or the child device 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 uses the drawing data to generate screen data corresponding to the touch screen 100, and the generated screen data is output to the display 22. .. The same applies hereinafter in this specification.

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

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

Here, when the user touches (selects) the first selection button 120, the child device 10b transmits the second child device request signal to the parent device 10a and receives the difference data from the parent device 10a. The drawing data for the machine 10a is updated to the latest data, and the updated drawing data is output to the display 22. Therefore, the screen of the child device 10b is switched to the screen of the parent device 10a.

The same applies when the screen of the child device 10c is switched to the screen of the parent device 10a.

Also, the screen can be switched between the child device 10b and the child device 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 displays the other child device 10c or the child device 10b first. 2 The slave unit request signal is transmitted, and the difference data is directly received (acquired) from the other slave unit 10c or slave unit 10b. Then, the child device 10b or the child device 10c updates the drawing data for the other child device 10c or the child device 10b to the latest data, and outputs the updated drawing data to the display 22.

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

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. However, as described above, since the functions of the parent device 10a are different from those of the child device 10b and the child device 10c, the information processing program stored in the RAM 14 of the parent device 10a is stored in the RAM 14 of the child device 10b and the child device 10c. It is partially different from the stored information processing program. In the first embodiment, as an example of an information processing program, a program (drawing control program) about a drawing application for drawing and saving handwritten characters and the like and switching the screen as described above is executed. It Specific processing will be described later using a flow chart.

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. A drawing control program is stored in the program storage area 302. 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 the touch coordinate data 330 indicating the touch position on the touch panel 20 output from the touch panel control circuit 16 and storing the touch coordinate data 330 in the data storage area 304. However, the input detection program 310 is also a program for detecting input from a keyboard of hardware connected to the information processing apparatus 10 or an operation panel or operation button of hardware provided in the information processing apparatus 10.

The image generation program 312 is a program for generating screen data corresponding to the touch screen 100 by using the touch coordinate data 330 detected according to the input detection program 310 or the image generation data 332 described later. 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 the drawing data generated according to the image generation program 312 to the display 22. Therefore, the touch screen 100 is displayed on the display 22.

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

The differential transmission/reception program 318 transmits the first parent device request signal to the child devices 10b and 10c by communicating with the child devices 10b and 10c according to the communication program 316 when the predetermined time T1 has elapsed, In response to this, the program is a program for receiving drawing data (base data or difference data) transmitted from the slaves 10b and 10c. In addition, when the screen switching is instructed, the differential transmission/reception program 318 communicates with the slaves 10b and 10c according to the communication program 316, thereby transmitting the second master request signal to the slaves 10b and 10c. Then, in response to this, it is a program for receiving the drawing data (base data or difference data) transmitted from the slaves 10b and 10c. Further, the difference 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 itself and another slave 10c or slave 10b to the slave 10b or slave 10c.

The storage program 320 is a program for storing (storing) the touch coordinate data 330 regarding the handwritten image in the RAM 14 as drawing data (first drawing data 334 described later) of the parent device 10a (own device). Further, the storage program 320 converts the drawing data (base data and difference data) received from the other information processing apparatus 10 (slave unit 10b and slave unit 10c) into the drawing data of the other information processing apparatus 10 (described later). 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 changes the screen displayed on the display 22 of its own device (here, the parent device 10a) to the screen displayed on another information processing device 10 (here, the child device 10b or the child device 10c). It 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, transmission/reception data buffer 340, and the like.

The touch coordinate data 330 is the current (in the current frame) touch coordinate data detected (acquired) according to the input detection program 310. When the touch coordinates indicated by the touch coordinate data 330 is included in the display area of the button (screen switching button 102 or the like) displayed on the touch screen 100, the function assigned to the button is executed or the attribute (attribute information ) Is set. If the touch coordinates indicated by the touch coordinate data 330 is not included in the display area of the button displayed on the touch screen 100, the touch coordinates are determined to be the touch coordinates included in the handwritten character and the like, and It is stored in the data storage area 304 as drawing data (here, first drawing data 334 to be 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 of various buttons (102, 120, 122, 124, etc.) displayed on the touch screen 100. However, since the image data of the patterns 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 about 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, the 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 handset 10b), and is drawing data received (acquired) from the handset 10b according to the storage program 320 and stored.

Further, the third drawing data 338 is drawing data of another information processing device 10 (here, the child device 10c), and the child data received (acquired) from the child device 10c according to the saving program 320 and saved. This is 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 child device 10b and the child device 10c, and thereafter, each time difference data is received from the child device 10b and the child device 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) or register necessary for executing the drawing control program is provided.

Subsequently, a memory map of the RAM 14 provided in the slaves 10b and 10c will be described. However, since the memory maps of the child device 10b and the child device 10c are the same as the memory map 300 of the parent device 10a except that the contents of the difference transmission/reception program 318, the storage program 320, and the screen switching program 322 are different, The description will be omitted, and the redundant description will be omitted.

The differential 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 accordingly, the parent device 10a sends the parent child device request signal. It is a program for receiving drawing data (base data or difference data) of the device 10a and the other device 10c or the device 10b. In addition, the differential transmission program 318 of the child device 10b or the child device 10c receives the drawing data (base data or difference data) as the parent 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 differential transmission/reception program 318 of the child device 10b or the child device 10c receives the drawing data (difference data) from the other child device when the second child device request signal is received from the other child device 10c or the child device 10b. It is also a program for transmitting to 10c or the handset 10b.

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

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

6 to 9 are flowcharts showing the drawing control process of the CPU 12 of the master device 10a. For example, the drawing application is started, and the handwriting input mode is selected by the user's instruction or by the 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 process of step S1, the CPU 12 of the master device 10a erases the touch coordinate data 330 in the data storage area 304, reads the image generation data 332 from the non-volatile memory, and then the initial touch screen 100. Is displayed on the display 22. That is, under the instruction of the CPU 12 of the parent device 10 a, the drawing control circuit 18 generates (draws) the screen data of the initial touch screen 100 as shown in FIG. 2A and outputs it to the display 22. However, when the user gives an instruction to read the saved drawing data, the touch screen 100 including the handwritten image is displayed on the display 22.

In the next step S3, a master storage process (see FIG. 10) described later is performed, and in step S5, it is determined whether or not the first slave request signal is received from the slave 10b or the slave 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 of determining whether or not another signal has been received.

If "NO" in the step S5, that is, if the first handset request signal is not received from the handset 10b or the handset 10c, the process directly proceeds to the step S13. On the other hand, if “YES” in the step S5, that is, if the first handset request signal is received from the handset 10b or the handset 10c, it is determined in a step S7 whether or not it is the first request. In step S7, the CPU 12 of the master device 10a determines whether or not the number of times the first slave device request signal is received is the first time. However, the determination as to whether it is the first time is performed 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 device 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 is calculated in a step S9. Data is transmitted, and the process proceeds to step S13.

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

In step S13, it is determined whether the second slave unit request signal is received from the slave unit 10b or the slave unit 10c. If "NO" in the step S13, that is, if the second handset request signal is not received from the handset 10b or the handset 10c, the process proceeds to a step S17 shown in FIG. 7.

On the other hand, if "YES" in the step S13, that is, if the second handset request signal is received from the handset 10b or the handset 10c, the difference data is transmitted in a step S15, and the process proceeds to a 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 10a determines whether 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 it is not the 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 touch-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 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 is 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 in a step S21 whether any button other than the screen switching button 102 is touched.

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 the line attribute information (line type, line color, line width), copies a handwritten image, or pastes the copied image according to the user's operation (instruction). , Specify the range of handwritten images and save drawing data in non-volatile memory.

On the other hand, if “NO” in the step S21, that is, if any button other than the screen switching button 102 is not touched, it is determined that the touch input is for handwriting, and a touch coordinate is input by handwriting in a step S25. Memorize 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 this 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 in the VRAM using the image generation data 332 and the first drawing data 334 and outputs it to the display 22. .. Therefore, during handwriting input, a line is drawn by a plurality of points according to the touch input, and a handwritten image such as a character is drawn by one or a plurality of lines.

Then, in a step S29, it is determined whether or not the touch is off. Here, the CPU 12 refers to the data storage area 304 and determines 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. Therefore, of the first drawing data 334, the data regarding the line being drawn 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, a thumbnail of the screen displayed on the display 22 of each information processing device 10 is displayed, as shown in FIG. 4B. That is, in step S31, the CPU 12 of the parent device 10a generates thumbnails (first to third selection buttons 120, 122, 124) using the screen data of the touch screens 100a, 100b, 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 is touched. If "NO" in the step S33, that is, if the thumbnail is not touched, the process directly returns to the step S33. 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 device 10 in a step S35. Here, the CPU 12 of the parent device 10a determines whether the selection button 122 or 124 has been touched.

If “NO” in the step S35, that is, if the screen of the other information processing device 10 is not switched (the screen of the own device is displayed), the process proceeds to a 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 device 10, the thumbnail is deleted in a step S37, and the information corresponding to the n-th thumbnail in a step S39. The second parent device request signal is transmitted to the processing device 10. However, in this 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 of 3) is the third selection button 124, and n=2 or 3 in step S39. Therefore, the CPU 12 of the master device 10a transmits the second master device request signal to the information processing device 10 corresponding to the touched nth thumbnail (nth selection button).

Then, in step S41, it is determined whether or not difference data is received from the child device (10b or 10c) that has transmitted the second parent device request signal. If "NO" in the step S41, that is, if the difference data is not received, the process directly returns to the step S41. On the other hand, if “YES” in the step S41, that is, if the 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.

Then, in step S47, it is determined whether or not to end. Here, the CPU 12 of the master device 10a determines whether or not the user has given an instruction to end the drawing application (drawing control process). If "NO" in the step S47, that is, if it is not the end, 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 parent device saving process shown in step S3 of FIG.

As shown in FIG. 10, the CPU 12 of the parent device 10a, when starting the parent device saving process, determines in step S61 whether a predetermined time T1 has elapsed. However, when the drawing control process is started, the timer for counting the fixed time T1 is started, and is reset and started every time the fixed time T1 is counted.

If "NO" in the step S61, that is, if the fixed 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, in a step S63, the first parent device request signal is transmitted to each child device (child device 10b and child device 10c), and the step In S65, it is determined whether or not 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 child device that has not received the drawing data, the process directly returns to the step S65. On the other hand, if “YES” in the step S65, that is, if drawing data is received from each slave, 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 being identified by each child device.

Next, the drawing control process of the CPU 12 of the child device 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. 6 to 10 except for some differences, duplicated drawings and description will be omitted. The drawing control process of the CPU 12 of the child device 10b will be described below, but the same applies to the child device 10c.

FIG. 11 is a flowchart showing a part of an example of the drawing control process of the CPU 12 of the child device 10b. FIG. 12 is a flowchart showing another part of the drawing control processing of the CPU 12 of the child device 10b and subsequent to FIG. Further, in FIGS. 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 child device 10b, as can be seen from FIG. 11, instead of steps S3 and S5 shown in FIG. 6, steps S91 and S93 are executed, and instead of step S13, The process of step S95 is executed. Further, 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 saving 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

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 a 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.

Then, in a step S95, it is determined whether or not the second parent device request signal is received from the parent device 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 a step S17 shown in FIG. 7.

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

FIG. 13 is a flowchart showing the child device saving process of the CPU 12 of the child device 10b shown in step S91 of FIG.

As shown in FIG. 13, when the child device saving process is started, the CPU 12 of the child device 10b determines in step S121 whether a predetermined time T2 has elapsed. However, when the drawing control process is started, a timer for counting the fixed time T2 is started, and is reset and started each time the fixed time T2 is counted. If “NO” in the step S121, that is, if the fixed 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, the first slave device request signal is transmitted to the master device 10a in a step S123, and the drawing data is transmitted from the master device 10a in a step S125. Judge whether (base data or difference data) has been received.

If "NO" in the step S125, that is, if the drawing data is not received from the parent device 10a, the process directly returns to the step S125. On the other hand, if “YES” in the step S125, that is, if the drawing data is received from the master device 10a, the received drawing data is saved in a 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.

Although detailed description of the drawing control process of the CPU 12 of the child device 10c is omitted, in the above description of the drawing control process of the CPU 12 of the child device 10b, the child device 10b and the child device 10c may be interchanged.

According to the first embodiment, the drawing data of the other information processing device 10 stored in the information processing device 10 is output to the display 22 according to the instruction from the user, so that the screen of the other information processing device 10 is displayed. Can be displayed. Therefore, the screen of the information processing device 10 can be switched to the screen displayed on another information processing device 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. It is possible to suppress the amount of data transmitted and received between the two.

Further, according to the first embodiment, since the plurality of information processing apparatuses 10 are connected by the LAN cable, the screens can be easily switched even when the plurality of information processing apparatuses 10 are installed in distant places. it can.

Although the information processing system 200 including the three information processing apparatuses 10 has been described in the first embodiment, four or more information processing apparatuses may be included as long as the information processing apparatus 200 includes at least two information processing apparatuses 10. Then, one of the plurality of information processing devices 10 functions as the master device 10a.

Further, in the first embodiment, the master unit 10a requests the slave unit 10b and the slave unit 10c to transmit the drawing data (base data or difference data) every time the predetermined time T1 elapses. Need not be limited to. The slaves 10b and 10c may transmit drawing data (base data or difference data) to the master 10a at regular time intervals T1. Alternatively, the child device 10b and the child device 10c may respectively transmit the base data and the difference data to the parent device 10a when the base data and the difference data have a predetermined data amount.

Further, in the first embodiment, the information processing apparatus 10 returns to the state before the screen switching (the original touch screen 100) by performing the operation of switching to the own screen after switching the screen once. However, it is also possible to display the button for returning to the touch screen 100 after switching the screens so that the original touch screen 100 can be returned by one operation.
<Second embodiment>
The information processing apparatus 10 according to the second embodiment is the first embodiment except that the screen of the master device 10a and the screen of the slave device 10b or the slave device 10c are switched according to the user's operation on the master device 10a. Since it is the same as the information processing apparatus 10 of the example, only the contents different from those of the first embodiment will be described, and the duplicated 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. 11 is an illustrative view showing another example of the touch screen 100 according to the present invention. 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 from the first to third selection buttons 120, 122, 124 displayed on the touch screen 100a of the parent device 10a. Then, as shown in FIG. 14B, the touch screen 100a of the master device 10a and the touch screen 100b of the slave device 10b are switched. That is, the same screen as the touch screen 100b of the child device 10b before replacement (change) is displayed as the touch screen 100a of the parent device 10a, and the touch screen 100a of the parent device 10a before replacement is displayed as the touch screen 100b of the child device 10b. The same screen as is displayed. Therefore, the touch screen 100a of the master device 10a is switched to the touch screen 100b of the slave device 10b, and the touch screen 100b of the slave device 10b is switched to the touch screen 100a of the master device 10a. As a result, the touch screen of the master device 10a is touched. The screen 100a and the touch screen 100b of the child device 10b are switched.

In the second embodiment, the master device 10a not only requests the slave device 10b or the slave device 10c, which is the other party to exchange the screens, to transmit the difference data, but also sends the slave device 10b or the slave device 10c to the master device (master device). A signal requesting switching to the screen of the device 10a) (hereinafter referred to as "third device request signal") is transmitted, and the difference data of the device itself is transmitted in response to a request from the device 10b or device 10c. Send.

On the other hand, when the child device 10b or the child device 10c receives 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. Further, when the slave device 10b receives the difference data from the master device 10a, it updates the first drawing data 334 of the master device 10a and outputs the updated first drawing data 334 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 embodiment. However, in the second embodiment, the screen switching program 322 of the parent device 10a is also a program for transmitting the third parent device request signal when the user instructs the screen switching. Further, in the second embodiment, the differential transmission/reception program 318 of the child device 10b or the child device 10c transmits the second child device request signal to the parent device 10a when the third parent device request signal is received from the parent device 10a. However, in accordance therewith, it is also a program for receiving the difference data transmitted from the master device 10a.

Hereinafter, the drawing control process of the second embodiment will be specifically described. However, the drawing control process is the same as the drawing control process of the first embodiment shown in FIGS. Omit it. The same reference numerals are attached to the same processes as the drawing control process of the first embodiment.

FIG. 15 is a flowchart showing a part of the drawing control processing of the CPU 12 of the parent device 10a in the second embodiment and sequel to FIG.

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

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

Then, in step S153, it is determined whether or not the second slave device request signal is received from the information processing device 10 corresponding to the n-th thumbnail. If “NO” in the step S153, that is, if the second slave device request signal is not received, the process directly returns to the step S153.

On the other hand, if “YES” in the step S153, that is, if the second slave device request signal is received from the information processing device 10 corresponding to the nth thumbnail, the information processing device 10 corresponding to the nth thumbnail is processed in a step S155. The difference data is transmitted to 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 flowchart showing a part of the drawing control processing of the CPU 12 of the child device 10b in the second embodiment and sequel to FIG. Note that the drawing control processing of the CPU 12 of the child device 10b will be described below, but the same applies to the child device 10c.

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

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

On the other hand, if “YES” in the step S171, that is, if the third parent device request signal is received, in a step S173, the second child device request signal is transmitted to the parent device 10a, and in a step S175, from the parent device 10a. It is determined whether the difference data is received. If “NO” in the step S175, that is, if the 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 the 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. Output to step S17.

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

Although detailed description of the drawing control process of the CPU 12 of the child device 10c is omitted, the child device 10b and the child device 10c may be interchanged in the above description of the drawing control process of the CPU 12 of the child device 10b.

According to the second embodiment, since each information processing apparatus 10 stores drawing data of another information processing apparatus 10 with each other, operating the master device 10a causes the screen of the master device 10a and the slave device 10b to operate. Alternatively, the screens of the child device 10c can be replaced in a short time.
<Third embodiment>
The information processing apparatus 10 according to the third embodiment is different from the first embodiment except that the screen of the master device 10a and the screen of the slave device 10b or the slave device 10c are switched according to the operation on the slave device 10b or the slave device 10c. Since it is the same as the information processing apparatus 10 of the first embodiment, the contents different from those of the first embodiment will be described, and the duplicated description will be omitted. Also, since the screen replacement is the same as in the second embodiment, the description of the same contents as those described in the second embodiment will be omitted.

FIG. 17A is an illustrative view showing one example of the touch screen 100 displayed on the display 22 in the information processing system 200 of the third embodiment. 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, since the screen of the master device 10a and the screen of the slave device 10b or the slave device 10c are switched according to the operation of the slave device 10b or the slave device 10c, another slave device (FIG. 17A). Then, the thumbnail (third selection button 124) of the screen of the child device 10c) is not displayed.

As shown in FIG. 17A, 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, for example, FIG. As shown in FIG. 17(B), the touch screen 100a of the child device 10a and the touch screen 100b of the child device 10b are switched.

Therefore, in the third embodiment, the child device 10b or the child device 10c not only requests the parent device 10a, which is the other party to exchange the screens, to transmit the difference data, but also asks the parent device 10a itself (child device 10b or A signal requesting switching to the screen of the child device 10c) (hereinafter referred to as "third child device request signal") is transmitted, and the difference data of the own device is transmitted in response to the request from the parent device 10a.

On the other hand, when the master device 10a receives the third slave device request signal, the master device 10a transmits the second slave device request signal to the slave device 10b or the slave device 10c that is the transmission source of the third slave device request signal. When the parent device 10a receives 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 to update the updated drawing data ( 336 or 338) 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, the differential transmission/reception program 318 of the master device 10a sends the third slave device request signal to the slave device 10b or slave device 10c which is the transmission source when the third slave device request signal is received from the slave device 10b or slave device 10c. It is also a program for transmitting the two-master device request signal and receiving the differential data transmitted from the slave device 10b or the slave device 10c in response thereto. Further, in the third embodiment, the screen switching program 322 of the child device 10b or the child device 10c is also a program for transmitting the third child device request signal when the user instructs the screen switching.

FIG. 18 is a flowchart showing a part of the drawing control processing of the CPU 12 of the parent device 10a in the third embodiment, which is a sequel to FIG. Hereinafter, the drawing control process of the third embodiment will be described, 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 processing of the CPU 12 of the parent device 10a shown in FIGS. 6 to 9, between steps S15 and S17, steps S201, S203, S205, and S207 are performed. And the processing of S209 is added.

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

On the other hand, if “YES” in the step S201, that is, if the third slave unit request signal is received, in a step S203, the second slave unit request is transmitted to the slave unit 10b or the slave unit 10c which is the transmission source of the third slave unit request signal. A signal is transmitted, and it is determined in step S205 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 the 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 a 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 flowchart showing a part of the drawing control processing of the CPU 12 of the child device 10b in the third embodiment and sequel to FIG. Note that the drawing control processing of the CPU 12 of the child device 10b will be described below, but the same applies to the child device 10c.

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

Therefore, as shown in FIG. 19, when the CPU 12 erases the thumbnail in step S37, the CPU 12 transmits the third slave device request signal to the master device 10a in step S221.

Then, in step S223, it is determined whether or not the second parent device request signal is received from the parent device 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 a step S97.

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

Although detailed description of the drawing control process of the CPU 12 of the child device 10c is omitted, the child device 10b and the child device 10c may be replaced in the description of the drawing control process of the CPU 12 of the child device 10b.

In the third embodiment as well, similar to the second embodiment, the screen of the master device 10a and the screen of the slave device 10b or the slave device 10c can be switched in a short time.

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

In this 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 (the same applies to the parent device 10a). .. Further, in the slaves 10b and 10c that are requested to switch screens, the same processing as steps S201 to S209 shown in FIG. 18 is further executed. Further, the child device 10b or the child device 10c requesting the screen replacement transmits a third child device request signal to the other child device 10c or the child device 10b, or from the other child device 10c or the child device 10b. It is determined whether or not the second slave device request signal is received, and the difference data is transmitted to another slave device 10c or slave device 10b. That is, the content of the processing of steps S221 to S225 in FIG. 19 is different from the case where the screens are exchanged with the master device 10a.

Specifically, the other child device 10c or the child device 10b, which is requested to switch the screen, determines whether or not the third child device request signal is received (S201), and receives the third child device request signal. Accordingly, the second slave device request signal is transmitted to the slave device 10b or the slave device 10c that has requested the third slave device request signal (S203). Then, the other handset 10c or handset 10b determines whether or not the difference data is received (S205), and updates the second drawing data 336 or the third drawing data 338 according to the reception of the difference data. Then (S207), the second drawing data 336 or the third drawing data 338 is output to the display (S209).

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

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

Further, the screen configurations, specific numerical values, and the like mentioned in each of the above-described embodiments are examples, and can be appropriately changed according to the actual product. Further, when the same effect is obtained, the order of the steps shown in the flowchart may be appropriately changed.

10... Information processing device 12... CPU
14... RAM
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... First selection button 122... Second selection button 124... Third selection button

Claims (9)

An information processing apparatus, comprising: an input detection unit that detects an input instruction from a user; and a communication unit that communicates with another information processing apparatus, and that displays an image on a display device.
Data receiving means for receiving data about the image transmitted from the other information processing device,
Data transmitting means for transmitting at least data regarding the image of the own device to the other information processing device,
A screen switching unit that displays the image of the other information processing device on the display device according to the input instruction detected by the input detection unit, and an image of the other information processing device by the screen switching unit. A data requesting means for requesting the other information processing device to transmit data of the image when displaying on the display device,
Equipped with
The screen switching unit includes a selection image display unit that displays at least a selection image for selecting an image of the other information processing device on the display device according to the input instruction detected by the input detection unit. Including, displaying on the display device an image of the other information processing device instructed by the selected image according to the input instruction detected by the input detection means,
An information processing apparatus, wherein the data transmitting unit transmits at least data regarding the image of the own apparatus to the other information processing apparatus that is a request source in response to a request from the other information processing 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 unit transmits, to the other information processing device, difference data regarding a difference from the data regarding the image transmitted up to the previous time after the second time. Processing equipment. The information processing device stores drawing data of the image in a storage device in a distinguishable manner,
Data storage means for storing the data about the image received by the data receiving means in the storage device in a distinguishable manner for each of the other information processing devices,
5. The screen switching means displays an image of the other information processing device on the display device by using data of the image stored in the storage device. The information processing device according to 1. The screen switching unit receives the difference data transmitted from the other information processing device in response to the request made by the data requesting unit, and updates the data about the image image of the other information processing device. Then, the information processing apparatus according to any one of claims 1 to 6, wherein an image of the other information processing apparatus is displayed on the display device by using the updated data of the image. An information processing program that is executed by an information processing device that displays an image on a display device, comprising: an input detection unit that detects an input instruction from a user; and a communication unit that communicates with another information processing device,
In the processor of the information processing device,
A data receiving step of receiving data about the image transmitted from one or more other information processing devices,
A data transmission step of transmitting at least data of the image of the own device to the other information processing device,
In accordance with the input instruction detected by the input detection means, at least a selection image display step of displaying a selection image for selecting an image of the other information processing device on the display device,
A data request step of requesting the other information processing apparatus to transmit data of the image when displaying the image of the other information processing apparatus on the display device,
In response to a request from the other information processing device, a data transmission step of transmitting at least data about the image of the own device to the other information processing device as a request source, and an input instruction detected by the input detection means. An information processing program that causes a screen switching step of displaying an image of the other information processing device instructed by the selected image on the display device according to the selected image. An information processing method for an information processing apparatus, comprising: an input detection unit that detects an input instruction from a user; and a communication unit that communicates with another information processing apparatus, and that displays an image on a display device.
(A) receiving data about the image transmitted from one or more other information processing devices,
(B) transmitting at least data about the image of its own device to the other information processing device,
(C) at least a selection image for selecting an image of the other information processing device is displayed on the display device in accordance with the input instruction detected by the input detection means,
(D) When displaying an image of the other information processing device on the display device, requesting the other information processing device to transmit data of the image,
(E) In response to a request from the other information processing device, at least data about the image of the own device is transmitted to the other information processing device as a request source, and
(F) An information processing method of displaying an image of the other information processing device instructed by the selected image on the display device according to the input instruction detected by the input detection means. An information processing system, comprising: an input detecting unit that detects an input instruction from a user; and a communication unit that communicates with another information processing device, and that includes a plurality of information processing devices that display images on a display device,
A 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 child devices among the plurality of information processing devices;
The first information processing device,
First data receiving means for receiving data about the image transmitted from the second information processing device,
First data transmission means for transmitting data about the image of the first information processing device and data about the image of another second information processing device to the second information processing device, and the input detection of the own device. A first screen switching means for displaying an image of the other second information processing device on the display device of the own device according to an input instruction detected by the means,
The first screen switching means of the self-device displays at least a selection image for selecting an image of the other second information processing device according to the input instruction detected by the input detection means of the self-device. An image of the other second information processing apparatus instructed by the selected image in accordance with an input instruction detected by the input detection means of the own machine, the image including the first selected image display means displayed on the display device; Display it on your own display device,
The second information processing device,
Second data transmitting means for transmitting data about the image displayed on the display device of the own device to the first information processing device,
A second data receiving unit that receives data about the image transmitted by the first data transmitting unit, and the first information processing device or the other unit according to an input instruction detected by the input detecting unit 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 unit selects at least an image of the first information processing device or the other second information processing device according to the input instruction detected by the input detection unit of the own device. The first information processing device including a second selection image display unit for displaying a selection image on the display device of the own device, and being instructed by the selection image according to the input instruction detected by the input detection unit of the own device. Alternatively, an information processing system that displays an image of the other second information processing device on the display device of the own device.

Images