JP6293903B2 - Electronic device and method for displaying information - Google Patents

Description

  The embodiments described herein relate to techniques for sharing information between devices.

  In recent years, various electronic devices such as tablets, PDAs, and smartphones have been developed. Many electronic devices of this type are equipped with a touch screen display to facilitate an input operation by a user.

  Recently, a system for sharing information among several users using technologies such as an electronic information board and an intelligent whiteboard has been developed.

JP 2012-168794 A

  However, the current situation is that no consideration is given to a technique for allowing a user to easily view the same part as the part that another user is paying attention to.

  An object of one embodiment of the present invention is to provide an electronic device and a method that can present to a user a portion that another user is paying attention to.

According to the embodiment, the electronic device logs in to the collaboration server system including at least the first electronic device that is the owner and the second electronic device that is the participant connected to the network by using the device ID or the user ID. An electronic device including a plurality of display areas in order to realize a canvas wider than a physical screen size of the electronic device, wherein each display area is input in the first electronic device and the second electronic device. A display on which the canvas that functions as a shared screen capable of displaying the information is displayed , and processing means for executing a shared application program including a shared collaboration function , wherein the processing means changes the display area. Any one of the plurality of display areas according to a moving operation for And displayable on the display, in a state where the first area in synchronization with the display and the first first display area displayed on the electronic device is being displayed, the display of the first electronic device is the first 1 when it is changed from the display area to the second display area, executes the processing for changing the display area by following the change are displayed on the display from the first display area on the second display area and, the first is not synchronized with the first display area displayed on the electronic device, in a state wherein the Viewing area that is different from said the display first display area is displayed, the first electronic device If the display is changed from the first display area on the second display area, the display area being displayed on the display from the first display area a second collar It does not execute the process for changing to.

FIG. 1 is an exemplary perspective view showing an appearance of an electronic apparatus according to the embodiment. FIG. 2 is an exemplary diagram illustrating a connection between electronic devices using the handwriting sharing service. FIG. 3 is an exemplary diagram for explaining an outline of a data flow between the electronic device (handwriting collaboration server system) of FIG. 1 and other electronic devices. FIG. 4 is an exemplary diagram showing a screen (canvas) for sharing information among a plurality of electronic devices. FIG. 5 is an exemplary diagram illustrating a handwritten document handwritten on the touch screen display of the electronic apparatus of FIG. 1. FIG. 6 is an exemplary diagram for explaining processing executed by the handwriting sharing service. FIG. 7 is an exemplary diagram showing a canvas including a plurality of display areas for sharing information between a plurality of electronic devices. FIG. 8 is an exemplary diagram showing how the display area displayed on the organizer's device is changed to another display area by the operation of the organizer. FIG. 9 is an exemplary diagram showing a state where the organizer and the participant are viewing different display areas. FIG. 10 is an exemplary diagram for explaining a canvas tracking process executed by the electronic apparatus of FIG. FIG. 11 is an exemplary diagram showing how the display area is changed to another display area by the canvas tracking process. FIG. 12 shows a forced synchronization process executed in response to an operation of a button displayed on the organizer's device and a self-synchronization process executed in response to an operation of a button displayed on each participant's device. It is an exemplary figure to explain. FIG. 13 is an exemplary diagram for explaining a menu displayed on the screen. FIG. 14 is an exemplary diagram showing a preview screen displaying the entire canvas. FIG. 15 is an exemplary diagram showing another preview screen displaying the entire canvas. FIG. 16 is an exemplary block diagram showing a configuration of the electronic apparatus of FIG. FIG. 17 is an exemplary block diagram showing a configuration of a handwriting sharing application program executed by the electronic device of FIG. FIG. 18 is an exemplary flowchart showing the procedure of the follow-up process executed by the electronic apparatus of FIG. FIG. 19 is an exemplary flowchart showing a preview process executed by the electronic apparatus of FIG.

Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 is a perspective view illustrating an external appearance of an electronic apparatus according to an embodiment. This electronic device is, for example, a pen-based portable electronic device that can execute handwriting input using a pen (stylus) or a finger. This electronic device can be realized as a tablet computer, a notebook personal computer, a smartphone, a PDA, or the like. Below, the case where this electronic device is implement | achieved as the tablet computer 10 is assumed. The tablet computer 10 is a portable electronic device that is also called a tablet or a slate computer. As shown in FIG. 1, the tablet computer 10 includes a main body 11 and a touch screen display 17. The touch screen display 17 is attached to be superposed on the upper surface of the main body 11.

  The main body 11 has a thin box-shaped housing. The touch screen display 17 incorporates a flat panel display and a sensor. The sensor detects a position (contact position) on the screen of the flat panel display that is in contact with the pen or the finger. The flat panel display may be, for example, a liquid crystal display (LCD). As the sensor, for example, a capacitive touch panel, an electromagnetic induction digitizer, or the like can be used. In the following, it is assumed that two types of sensors, a digitizer and a touch panel, are incorporated in the touch screen display 17.

  The touch screen display 17 can detect the position on the screen in contact with the finger, and can also detect the position on the screen in contact with the pen. The pen 100 may be, for example, an electromagnetic induction pen (digitizer pen). The user can write characters on the screen of the touch screen display 17 using the pen 100. During the handwriting input operation, the locus of movement of the pen 100 on the screen, that is, the stroke input by handwriting is drawn on the screen in real time. The locus of movement of the pen 100 while the pen 100 is in contact with the screen corresponds to one stroke. A set of many strokes corresponding to handwritten characters or figures constitutes a handwritten document.

  One stroke is expressed by a set of a plurality of point data corresponding to each of a plurality of points on the stroke. Each point data indicates the coordinates (X coordinate, Y coordinate) of the corresponding point.

  Furthermore, the tablet computer 10 has a handwriting collaboration function. This handwriting collaboration function executes a handwriting sharing service that allows various electronic documents to be shared among a plurality of electronic devices. The various electronic documents may be, for example, handwritten documents, text data, presentation data, word processing data, image data, spreadsheet data, combinations thereof, and the like. The handwritten sharing service allows users of each electronic device to view shared information, exchange information between electronic devices, and collaborate with users of other electronic devices to create electronic documents containing handwritten information. Allows editing.

  This handwriting sharing service distributes information (including handwritten data) input in electronic devices participating (logged in) to this service in real time to other electronic devices participating (logged in) in this service. To do. As a result, the contents of the electronic documents displayed on the display screens of these electronic devices can be synchronized. Information input by different users, for example, text, strokes input by handwriting, etc., may be displayed in different forms (for example, different colors).

  The handwriting sharing service is used by a group of multiple people. The group of a plurality of people who use the handwriting sharing service may include one group owner (organizer) and one or more participants.

FIG. 2 shows a connection example between electronic devices using the handwriting sharing service.
The electronic device 10A is a tablet computer used by the user A. The electronic device 10B is a tablet computer used by the user B. The electronic device 10 </ b> C is a tablet computer used by the user C. Each of these electronic devices 10A, 10B, and 10C has a handwriting collaboration function equivalent to that of the tablet computer 10 of the present embodiment.

  The electronic devices 10A, 10B, and 10C are connected to each other via a wired network or a wireless network. In the following, it is assumed that the electronic devices 10A, 10B, and 10C are connected to each other via a wireless network. As a method for wirelessly connecting electronic devices 10A, 10B, and 10C to each other, any wireless connection standard capable of wirelessly connecting a plurality of devices to each other can be used. For example, Bluetooth (registered trademark), Wi-Fi Direct (registered trademark), or the like may be used.

  Any one of the electronic devices 10A, 10B, and 10C can function as a server (handwriting collaboration server system) configured to manage the handwriting sharing service. The electronic device of the group owner may serve as a server (handwriting collaboration server system). The group owner is equivalent to the organizer of the handwriting sharing service.

  In this server (handwriting collaboration server system), each electronic device requesting participation in the handwriting sharing service participates in the handwriting sharing service (group), that is, logs in to the handwriting collaboration server system (handwriting sharing service). , It may be determined whether or not to allow. Only a device that has received permission for participation (login) from the handwriting collaboration server system may be permitted to log in to the handwriting sharing service, that is, to participate in this group.

  Here, as a method for each device to log in to the handwriting collaboration server system (handwriting sharing service), a method of logging in to the handwriting sharing service using the ID (account) of the device itself may be used. Or you may use the method of logging in to a handwriting sharing service using ID (account) of the user who uses this apparatus. That is, the login and logout for the handwriting sharing service may be either login and logout using the ID (account) of the electronic device itself or login and logout using the user ID (account).

  Assume that the electronic devices 10A, 10B, and 10C are currently logged in to the handwriting sharing service, that is, the electronic devices 10A, 10B, and 10C are participating in the same handwriting sharing service. In each of the electronic devices 10A, 10B, and 10C, a shared screen (canvas) that allows browsing of shared information is displayed. This screen (canvas) is used as a display area common to the electronic devices 10A, 10B, and 10C. This screen (canvas) enables visual communication between the electronic devices 10A, 10B, and 10C. Visual communication enables information such as text, images, handwritten characters, handwritten figures, diagrams, etc. to be shared and exchanged between devices in real time.

  Data (text, handwritten data, etc.) input by each of the users A, B, and C to the canvas of his / her electronic device is not only displayed on the shared screen (canvas) of his / her electronic device, but also It is also reflected in real time on the shared screen (canvas) of the user's electronic device. As a result, information (text, handwritten data, etc.) input by each of the users A, B, and C can be exchanged and shared between the users A, B, and C.

  Furthermore, the electronic devices 10A, 10B, and 10C can display the same content such as conference materials on the canvas. In this case, handwritten data input by handwriting in each electronic device is displayed on this content. Users A, B, and C can exchange and share handwritten characters, handwritten figures, and the like handwritten on the content among the users A, B, and C while viewing the same content.

  The visual communication is not necessarily bidirectional communication, and may be unidirectional transmission in which information is transmitted from the electronic device 10A to the electronic devices 10B and 10C. In this case, the canvas displayed on each electronic device functions as a display area capable of displaying information input in another electronic device. The canvas displayed on each electronic device may include a plurality of display areas (also referred to as pages).

  FIG. 3 shows a data flow between the handwriting collaboration server system and each electronic device.

  In FIG. 3, it is assumed that the electronic device 10A operates as a handwriting collaboration server system. That is, the user A of the electronic device 10A is a group owner, the user B of the electronic device 10B is a participant (participant 1), and the user C of the electronic device 10C is another participant (participant 2).

  In the following, although not limited, the flow of data between the handwriting collaboration server system and each electronic device will be described by exemplifying a case where handwritten data is exchanged / shared between electronic devices.

  The handwriting collaboration server system (electronic device 10A) receives handwritten data input by handwriting in the electronic device 10B from the electronic device 10B. The handwriting collaboration server system (electronic device 10A) receives handwritten data input by handwriting in the electronic device 10C from the electronic device 10C.

  Further, the handwriting collaboration server system (electronic device 10A) transmits handwritten data input by handwriting in the electronic device 10A and handwritten data received from the electronic device 10C to the electronic device 10B. Furthermore, the handwriting collaboration server system (electronic device 10A) transmits handwritten data input by handwriting in the electronic device 10A and handwritten data received from the electronic device 10B to the electronic device 10C.

  Therefore, on the display of the electronic device 10A, not only the handwritten data of the group owner is displayed, but also the handwritten data of the participant 1 and further the handwritten data of the participant 2 are displayed.

  Similarly, on the display of the electronic device 10B, not only the handwritten data of the participant 1 is displayed, but also the handwritten data of the group owner and further the handwritten data of the participant 2 are displayed.

  Similarly, on the display of the electronic device 10C, not only the handwritten data of the participant 2 is displayed, but also the handwritten data of the group owner and further the handwritten data of the participant 1 are displayed.

  The electronic device 10 </ b> A stores handwritten data input by handwriting in each electronic device in the database 12. This database 12 is used to manage handwritten information created and edited by collaborative work.

  FIG. 4 shows an example of a shared screen (canvas). In the canvas 30A of each electronic device, a transparent layer (handwriting layer) 30B capable of handwriting input is set. The handwritten data of each user is displayed on the handwriting layer 30B.

  Regarding the electronic device 10B, in the canvas 30A of the electronic device 10B, handwritten data 40 input by the participant 1 using the pen 100B on the canvas 30A is displayed. Furthermore, on the canvas 30A, handwritten data input by handwriting in other electronic devices is displayed. The handwritten data input by handwriting in each of the other electronic devices includes handwritten data 42 input by handwriting in the electronic device 10C of the participant 2 and handwritten data 44 input by handwriting in the electronic device 10A of the group owner. .

  Information exchanged and shared between the handwriting collaboration server system and each electronic device is not limited to handwritten data, and may be presentation data or word processor data.

  Next, stroke and point data will be described with reference to FIG.

  In FIG. 5, it is assumed that the handwritten character string “ABC” is handwritten in the order of “A”, “B”, and “C”.

  The handwritten character “A” is represented by two strokes (“∧” shape trajectory, “−” shape trajectory) handwritten using the pen 100 or the like.

  While the pen 100 is moving, the trajectory of the “∧” -shaped pen 100 is sampled in real time. Thereby, a plurality of point data (a plurality of coordinate data) PD11, PD12,... PD1m corresponding to the plurality of points on the trajectory of the “∧” -shaped pen 100 are obtained one after another. For example, point data indicating a new position may be obtained each time the position of the pen 100 on the screen moves by a predetermined amount. In FIG. 5, the density of the point data is drawn roughly for the sake of simplicity, but actually, a plurality of point data can be obtained at a higher density. These point data PD11, PD12,... PD1m are used to draw the trajectory of the “∧” -shaped pen 100 on the screen. The locus of the “∧” -shaped pen 100 is drawn on the screen in real time so as to follow the movement of the pen 100.

  Similarly, the trajectory of the “-” shaped pen 100 is also sampled in real time while the pen 100 is moving. Thereby, a plurality of point data (a plurality of coordinate data) PD21, PD22,... PD2n corresponding to each of a plurality of points on the trajectory of the “−” shaped pen 100 are obtained one after another.

  The handwritten character “B” is expressed by two strokes handwritten using the pen 100 or the like. The handwritten character “C” is expressed by one stroke handwritten using the pen 100 or the like.

  Next, a data flow for the handwritten information sharing service will be described with reference to FIG.

  In FIG. 6, a case is assumed in which a group of three persons, that is, a group owner (electronic device 10A), a participant 1 (electronic device 10B), and a participant 2 (electronic device 10C) performs a discussion. The group owner, participant 1, and participant 2 may gather in the conference room with their own electronic devices 10A, 10B, 10C. The group owner, the participant 1, and the participant 2 can perform a discussion while looking at the canvas of their own electronic devices or writing text or handwritten data on the canvas.

  Data (text, handwritten characters, handwritten figures, etc.) input on the canvas of the electronic device 10B by the participant 1 is transmitted to the electronic device 10A. Furthermore, the data input by the participant 1 is transferred to the electronic device 10C by the electronic device 10A. Therefore, the data input by the participant 1 is displayed on the respective canvases of the electronic device 10B, the electronic device 10A, and the electronic device 10C.

  Similarly, data (text, handwritten characters, handwritten figures, etc.) input by the participant 2 on the canvas of the electronic device 10C is also transmitted to the electronic device 10A, and further transferred to the electronic device 10B by the electronic device 10A. The Therefore, the data input by the participant 2 is displayed on the respective canvases of the electronic device 10B, the electronic device 10A, and the electronic device 10C.

  Furthermore, data (text, handwritten characters, handwritten graphics, etc.) input on the canvas of the electronic device 10A by the group owner is transmitted to the electronic device 10B and the electronic device 10C. Therefore, data input by the group owner is also displayed on the respective canvases of the electronic device 10A, the electronic device 10B, and the electronic device 10C.

  In this way, the group of three people can hold a discussion (conference) while looking at the contents of the canvas reflecting the data written by these three people.

  Below, the process which transmits the handwritten data input on the canvas of a certain electronic device to another electronic device is demonstrated.

  As a method for transmitting handwritten data input by handwriting in a certain electronic device to another electronic device, a method of transmitting the entire stroke data (stroke data) at a time every time one stroke is input by handwriting Can be used.

  Alternatively, the handwritten data may be transmitted not in units of stroke but in units of point data. In this case, for example, a plurality of point data corresponding to a stroke input by handwriting in the electronic device 10B is time-series from the electronic device 10B to the handwriting collaboration server system (electronic device 10A) while the stroke is input by handwriting. Sequentially transmitted sequentially. That is, the plurality of point data is transferred from the electronic device 10B to the handwriting collaboration server system (electronic device 10A) one by one in the order in which the plurality of point data corresponding to the stroke is input.

  When the former method of transmitting handwritten data in units of stroke data is used, it is possible to reduce the number of necessary communications.

  However, the stroke data is not transmitted until the handwriting input of the stroke is completed, that is, until the contact between the pen and the screen is released by lifting the pen from the screen. Therefore, for example, when three strokes are sequentially handwritten input in a certain electronic device, first, after completing the first stroke handwriting input, the shape of the entire first stroke is on the canvas of another electronic device. Are displayed at once. Then, after the handwriting input of the second stroke is completed, the shape of the entire second stroke is displayed at once on the canvas of another electronic device. After the handwriting input of the third stroke is completed, the shape of the entire third stroke is displayed at once on the canvas of another electronic device.

  Thus, on the canvas of another electronic device, the state in which individual strokes are written (the state in which lines are extended) is not reproduced, and only the shape of each stroke for which handwriting input has been completed is displayed at a time. .

  On the other hand, in an electronic device in which stroke handwriting input is actually performed, a state in which the stroke is written (a state in which a line extends) is displayed in real time.

  If the latter method of sending handwritten data in point data units is used, the number of communications will increase, but whatever strokes the handwriting is input on any electronic device will show that all other strokes are written. It can be reproduced on the canvas of electronic devices.

  Hereinafter, a specific flow of handwritten data will be described assuming that handwritten data is transmitted in units of point data.

  (1) The stroke is input by handwriting in the electronic device 10B of the participant 1. This stroke is displayed in real time on the canvas of the electronic apparatus 10B. That is, the stroke (line) is drawn so as to follow the movement of the pen on the canvas of the electronic device 10B.

  (2) A stroke is expressed as a set of a plurality of point data (a plurality of coordinates) from the start point to the end point.

  (3) The stroke data (stroke data) is transmitted to the group owner (electronic device 10A) in units of point data. That is, in the electronic device 10B, while the stroke is input by handwriting, a large number of point data corresponding to the stroke are sequentially transmitted to the group owner (electronic device 10A) in time series. Each point data is stored in the group owner (electronic device 10A) together with the stroke ID, user ID (or device ID), point type (start point / middle point / end point), pen attributes (pen type, color, etc.), etc. May be sent. The stroke ID is information that can identify a stroke input by handwriting. Each electronic device may generate a unique ID having a plurality of digits using a random number or the like, and use the value of the unique ID as a stroke ID for identifying a stroke input by handwriting first. For strokes handwritten after the second, a value obtained by incrementing the unique ID may be used as the corresponding stroke ID. The same stroke ID is given to each point data corresponding to the same stroke.

  (4) The group owner (electronic device 10A) receives a plurality of point data sequentially transmitted from the electronic device 10B in chronological order. Then, the group owner (electronic device 10A) stores the plurality of point data in the database 12 together with a time stamp indicating the reception time (reception timing) of the plurality of point data. Each time stamp may indicate the time when the corresponding point data is received by the group owner (electronic device 10A), or the corresponding point data is received from the time when the first point data in the same stroke is received. The relative time until the point in time may be indicated. Alternatively, each time stamp may indicate an input time when the corresponding point data is input. In this case, the electronic device 10B may transmit each point data to the group owner (electronic device 10A) together with time information indicating the input time when the point data is input.

  (5) The group owner (electronic device 10A) transmits a plurality of point data received from the electronic device 10B to the electronic device 10C.

  In this case, the plurality of point data may be sequentially transmitted to the electronic device 10C in chronological order at a timing based on the time stamp corresponding to the plurality of point data. Accordingly, the plurality of point data can be transmitted to the electronic device 10C at the same interval as the interval at which the plurality of point data is received.

  Each point data to be transmitted includes a stroke ID, a user ID (or device ID), a point type (start point / middle point / end point), a pen attribute (pen type, color, etc.), and the like.

  Alternatively, when the group owner (electronic device 10A) receives one piece of point data from the electronic device 10B, the group owner (electronic device 10A) may immediately transmit the point data to the electronic device 10C.

  Further, the group owner (electronic device 10A) may draw a locus corresponding to the stroke input by handwriting on the electronic device 10A in real time on the group owner's canvas based on a plurality of point data from the electronic device 10B. it can.

  FIG. 7 shows a canvas 30A used in this embodiment.

  The canvas 30A includes a plurality of display areas (also referred to as pages) in order to realize a canvas wider than the size (resolution) of the physical screen. Each display area can function as a shared screen capable of displaying information input in other devices.

  FIG. 7 illustrates a case where the canvas 30 </ b> A includes three display areas 111, 112, and 113 arranged in the horizontal direction. Each of the three display areas 111, 112, and 113 is used as a shared screen (canvas area) for enabling visual communication between devices. For example, information input to the display area 111 in the canvas 30A by the group owner (organizer) is reflected (displayed) in the display area 111 in the canvas 30A of each participant. Information input to the display area 112 in the canvas 30A by the group owner (organizer) is reflected (displayed) in the display area 112 in the canvas 30A of each participant. Similarly, information input to display area 111 in canvas 30A by a participant is reflected (displayed) in display area 111 in canvas 30A of the group owner and display area 111 in canvas 30A of each other participant. Is done.

  The user of each electronic device can display any display area in the three display areas 111, 112, and 113 on the display by a finger gesture for moving the canvas 30A. In FIG. 7, it is assumed that the display area 111 in the canvas 30A is displayed on the electronic device of each participant.

  Each user (participant, owner) can change the currently displayed display area to another display area by moving the canvas 30A with a finger gesture such as a swipe. In other words, each user can display an arbitrary part in the canvas 30A on the display. Each user can also write text and handwritten data in the currently displayed display area. Each user can view information written by himself or other users in the currently displayed display area.

  The default display area displayed on each electronic device when each electronic device logs in to the handwriting sharing service is, for example, the display area 111. Therefore, as long as a finger gesture for moving the canvas 30 </ b> A is not performed, all devices logged in to the handwriting sharing service can display the display area 111. That is, all devices logged in to the handwriting sharing service can use the display area 111 to execute visual communication for exchanging or sharing information.

  The configuration of the canvas 30A is not limited to the example of FIG. For example, the canvas 30A may be realized by one page wider than the size (resolution) of the physical screen. Even in this case, the user of each electronic device can display an arbitrary part in the canvas 30A on the display.

  FIG. 8 shows how the display area displayed on the device of the group owner (organizer) is changed to another display area by the operation of the group owner.

  To start another discussion, the group owner switches the displayed display area (a part in the canvas 30A) to another display area (a different part in the canvas 30A) by a finger gesture such as a swipe. 8 illustrates a case where the display area displayed on the device of the group owner (organizer) is changed from the display area 111 to the display area 112.

  In this case, as shown in FIG. 9, there is a possibility that the display area viewed by each participant is different from the display area viewed by the group owner (organizer). For this reason, each participant cannot pay attention to the display area in which the group owner is paying attention (the display area in which writing may be performed by the group owner). This can be a factor that impairs the original function of visual communication of sharing and exchanging information using a canvas 30A common to a plurality of people.

  Therefore, the handwriting collaboration function of this embodiment has a canvas tracking function. This canvas tracking function is a display area displayed on each participant's device while allowing each participant to view or edit any part of the canvas 30A (input text, handwritten data, etc.). Can be automatically changed (updated) so as to follow the transition (canvas movement) of the display area in the device of the group owner.

  For example, if the display area displayed on the device of the group owner is changed from the display area 111 to the display area 112, each participant's device displays the display area displayed on its own device display area. The display area 112 is automatically changed to the display area 112.

  In the present embodiment, the devices that follow the group owner's canvas movement are limited to the devices of participants who are viewing the same display area as the group owner. Participant's equipment viewing a display area different from the display area that the group owner was viewing does not follow the group owner's canvas movement. As a result, the canvas tracking function is applied only to the participant's equipment that satisfies the condition that the participant is viewing the same display area as the group owner without preventing each participant from freely viewing and editing any display area. can do.

  FIG. 10 shows the canvas tracking process executed by each participant's device.

  (1) The group owner changes the display area in the canvas 30 </ b> A displayed on the electronic device 10 </ b> A from the display area 111 to the display area 112 by a finger gesture such as swipe.

  (2) The electronic device 10A transmits canvas movement information indicating the movement amount of the canvas to each participant's electronic device, and notifies each participant's electronic device of the movement of the canvas and the movement amount. Or 10A of electronic devices may transmit the information which shows a movement origin display area and a movement destination display area to each participant's electronic device.

  (3) In the electronic device 10B, the display area 111 is displayed. Thus, when the display area displayed on the electronic device 10B is the same as the display area displayed on the group owner's electronic device 10A, that is, the display area displayed on the electronic device 10B and the group owner's When the display area displayed on the electronic device 10A is synchronized, the electronic device 10B moves the canvas 30A displayed on the display of the electronic device 10B based on the canvas movement information, for example. Thereby, the display area displayed on the display of the electronic device 10B is changed from the display area 111 to the display area 112.

  Various methods can be used as a method for determining whether or not the display area of the electronic device 10B and the display area of the electronic device 10A are synchronized. For example, a method of determining whether or not the movement of the canvas 30A by the finger gesture has already been performed in the electronic device 10B may be used. In this case, if the canvas 30A is not moved by the finger gesture of the participant 1 in the electronic device 10B, it is determined that the display area of the electronic device 10B and the display area of the electronic device 10A are synchronized. The If the movement of the canvas 30A by the finger gesture of the participant 1 has already been performed, it is determined that the display area of the electronic device 10B and the display area of the electronic device 10A are not synchronized.

  Even if the canvas 30A is already moved by the finger gesture, after the forced synchronization process or the self-synchronization process described later in FIG. 12 is executed once, the display area of the electronic device 10B and the electronic device 10A It can be determined that the display area is synchronized.

  In the electronic device 10C, a display area 111 is displayed. As described above, when the display area displayed on the electronic device 10C is the same as the display area displayed on the group owner's electronic device 10A, that is, the display area displayed on the electronic device 10C and the group owner's When the display area displayed on the electronic device 10A is synchronized, the electronic device 10C moves the canvas 30A displayed on the display of the electronic device 10C based on the canvas movement information, for example. Thereby, the display area displayed on the display of the electronic device 10 </ b> C is changed from the display area 111 to the display area 112.

  (4) In the electronic device 10D, the display area 113 is displayed. That is, in the electronic device 10D, the canvas 30A has already been moved by the finger gesture of the participant 3. In this case, the electronic device 10D determines that the display area of the electronic device 10D and the display area of the electronic device 10A are not synchronized. And electronic device 10D does not perform the process which moves canvas 30A currently displayed on the display of electronic device 10D. Thereby, the display area displayed on the display of the electronic apparatus 10 </ b> D is maintained in the display area 113.

  FIG. 11 shows a display area displayed on each participant's electronic device after the canvas tracking process is executed. As can be seen from FIG. 11, the display areas (locations in the canvas 30A) displayed on the electronic devices 10B and 10C are automatically changed so as to follow the movement of the canvas in the electronic device 10A. On the other hand, in the electronic device 10D that is a participant's device viewing a display area different from the display area that the group owner was viewing, the displayed display area (location in the canvas 30A) is the canvas in the electronic device 10A. Does not follow movement.

  Next, forced synchronization processing and self-synchronization processing will be described with reference to FIG.

  In the forced synchronization process, the display area in the canvas that is displayed on the electronic devices of all participants is matched with the display area in the canvas that is currently displayed on the electronic device 10A of the group owner. It is a process that makes it possible. The group owner can instruct execution of forced synchronization processing by operating (tapping) the forced synchronization button 51 which is a user interface displayed on the electronic device 10A of the group owner. When the button 51 is tapped, the electronic device 10A transmits a forced synchronization request that requests display of the same display area as the display area currently displayed on the electronic device 10A to each of the electronic devices of all participants. . In each participant's electronic device, regardless of which display area is currently displayed on the display, a process for displaying on the display the same display area as that currently displayed on the group owner's electronic device 10A Is executed. Information for specifying the display area currently displayed on the group owner electronic device 10A may be included in the forced synchronization request.

  In the self-synchronization process, at the intention of each participant, the display area in the canvas displayed on the electronic device of the participant is matched with the display area in the canvas currently displayed on the group owner electronic device 10A. It is a process that enables.

  The participant can instruct execution of the self-synchronization process by operating (tapping) the synchronization button 52 that is a user interface displayed on the electronic device of the participant. Assume that the button 52 displayed on the electronic device 10D is tapped. The electronic device 10D executes a process for specifying a display area currently displayed on the group owner's electronic device 10A. For example, the electronic device 10D may inquire about the display area currently displayed on the group owner electronic device 10A. And electronic device 10D performs the process for changing the display area currently displayed on the display of electronic device 10D into the specified display area.

  The button 52 may be displayed on the display of the electronic device 10D on the condition that the movement of the canvas 30A by the finger gesture of the participant 3 has been performed. By the appearance of the button 52, the participant 3 can understand that the current display area of the electronic device 10D is not synchronized with the display area of the group owner.

  Next, a preview process executed by each electronic device will be described with reference to FIGS.

Here, it is assumed that the electronic device 10B executes the preview process. Participants 2, to de-spool Tray of electronic devices 10B, it is possible to display the menu. This menu includes a “Preview” button. The “Preview” button is a software button for starting preview processing for displaying the entire canvas 30A in a form that can identify which display area of the canvas 30A is currently displayed by each electronic device. .

  When the “Preview” button is tapped by the user, as shown in FIG. 14, a preview image of the canvas 30A obtained by reducing the entire canvas 30A is displayed on the display of the electronic device 10B. The electronic device 10B specifies the display area currently displayed in each of the other electronic devices by inquiring the display area currently displayed to the other electronic devices or the electronic device of the group owner. Then, the electronic device 10B displays a frame F1 that surrounds the display area 111 viewed by the group owner, the participant 1, and the participant 2. Furthermore, the electronic device 10 </ b> B displays a frame F <b> 2 that surrounds the display area 113 viewed by the participant 3.

  The frame F1 may be provided with a tag that functions as an indicator for identifying each user who is viewing the display area surrounded by the frame F1. In this case, three tags including a tag corresponding to the participant 1, a tag corresponding to the participant 2, and a tag corresponding to the group owner may be attached to the frame F1. The tag corresponding to the participant 1 may display the user ID of the participant 1 or the device ID of the participant 1 device. The tag corresponding to the participant 2 may display the user ID of the participant 2 or the device ID of the device of the participant 1. The tag corresponding to the group owner may display the user ID of the group owner or the device ID of the device of the group owner.

  A tag corresponding to the participant 3 may be attached to the frame F2.

  In FIG. 14, for simplification of illustration, the tag corresponding to the participant 1 displays “1”, the tag corresponding to the participant 2 displays “2”, and the tag corresponding to the participant 3. Displays “3”, and the tag corresponding to the group owner displays “Owner”.

  When the user (participant 2) of the electronic device 10B selects a display area on the preview image of the canvas 30A, the display area displayed on the electronic device 10B is changed to the display area selected on the preview image. Is done. Accordingly, the participant 2 can easily change the display area displayed on the electronic device 10B to a display area viewed by other participants or a display area viewed by the group owner, as necessary. .

  FIG. 15 shows another example of a preview image of the canvas 30A.

  In FIG. 15, it is assumed that the canvas 30A is realized by one page wider than the size (resolution) of the physical screen of each electronic device. Each electronic device can display an arbitrary portion (an arbitrary one of a plurality of display areas included in the canvas 30A) in the canvas 30A on a display.

  In the preview image of the canvas 30A, a frame F11 with a tag for displaying “1” indicates a portion (display area) in the canvas 30A that the participant 1 is currently viewing. A frame F12 with a tag indicating “2” indicates a portion (display area) in the canvas 30A that the participant 2 is currently viewing. A frame F13 with a tag indicating “3” indicates a portion (display area) in the canvas 30A that the participant 3 is currently viewing. A frame F14 with a tag displaying “4” indicates a portion (display area) in the canvas 30A that the participant 4 is currently viewing. A frame F15 to which a tag indicating “Owner” is attached indicates a portion (display area) in the canvas 30A that the group owner is currently viewing.

FIG. 16 shows a system configuration of the tablet computer 10.
As shown in FIG. 16, the tablet computer 10 includes a CPU 101, a system controller 102, a main memory 103, a graphics processing unit (GPU) 104, a BIOS-ROM 105, a nonvolatile memory 106, a wireless communication device 107, and an embedded controller (EC). 108 and the like.

  The CPU 101 is a processor that controls operations of various components in the tablet computer 10. The CPU 101 executes various programs loaded from the nonvolatile memory 106 that is a storage device to the main memory 103. These programs include an operating system (OS) 201 and various application programs. The application program includes a handwriting sharing application program 202. The handwriting sharing application program 202 can execute the above-described handwriting collaboration function for sharing handwritten information among a plurality of electronic devices.

  The CPU 101 also executes a basic input / output system (BIOS) stored in the BIOS-ROM 105. The BIOS is a program for hardware control.

  The system controller 102 is a device that connects the local bus of the CPU 101 and various components. The system controller 102 also includes a memory controller that controls access to the main memory 103. The system controller 102 also has a function of executing communication with the graphics processing unit (GPU) 104 via a PCI EXPRESS serial bus or the like.

  The GPU 104 is a display processor that controls the LCD 17 </ b> A used as a display monitor of the tablet computer 10. A display signal generated by the GPU 104 is sent to the LCD 17A. The LCD 17A displays a screen image based on the display signal. A touch panel 17B is disposed on the upper surface side of the LCD 17A. A digitizer 17C is disposed on the lower surface side of the LCD 17A. The touch panel 17B is a capacitance-type pointing device for inputting on the screen of the LCD 17A. The touch position on the screen where the finger is touched and the movement of the touch position are detected by the touch panel 17B. The digitizer 17C is an electromagnetic induction type pointing device for inputting on the screen of the LCD 17A. The digitizer 17C detects the contact position on the screen where the pen 100 is touched, the movement of the contact position, and the like.

  The wireless communication device 107 is a device configured to perform wireless communication. The EC 108 is a one-chip microcomputer including an embedded controller for power management. The EC 108 has a function of turning on or off the tablet computer 10 in accordance with the operation of the power button by the user.

  Next, the configuration of the handwriting sharing application program 202 will be described with reference to FIG.

  The handwriting sharing application program 202 includes a handwriting input interface 300, a display processing unit 301, a processing unit 302, a transmission control unit 303, a reception control unit 304, and the like as function execution modules for sharing handwritten information.

  The handwriting sharing application program 202 creates, displays, and edits handwritten page data by using stroke data that is input using the touch screen display 17. The digitizer 17C of the touch screen display 17 is configured to detect occurrence of events such as “touch”, “move (slide)”, “release” and the like. “Touch” is an event indicating that the pen has touched the screen. “Move (slide)” is an event indicating that the contact position has been moved while the pen is in contact with the screen. “Release” is an event indicating that the pen is released from the screen.

  The handwriting input interface 300 is an interface configured to perform handwriting input in cooperation with the digitizer 17 </ b> C of the touch screen display 17. The handwriting input interface 300 receives a “touch” or “move (slide)” event from the digitizer 17 </ b> C of the touch screen display 17, thereby detecting a handwriting input operation. The “touch” event includes the coordinates of the contact position. The “movement (slide)” event also includes the coordinates of the contact position of the movement destination. Therefore, the handwriting input interface 300 can receive a coordinate sequence (a plurality of point data) corresponding to the movement locus of the contact position from the touch screen display 17.

  The display processing unit 301 selectively displays any one of the display areas 111, 112, and 113 in the canvas 30A on the LCD 17A. Assume that the display area 111 is displayed on the LCD 17A. Based on the coordinate sequence from the handwriting input interface 300, the display processing unit 301 displays each stroke input by handwriting input operation using the pen 100 on the canvas 30A (display area 111). Further, the display processing unit 301 displays information written in the display area 111 in another electronic device on the display area 111 under the control of the processing unit 302.

  Under the control of the processing unit 302, the transmission control unit 303 uses the wireless communication device 107 to execute processing for transmitting information input to the display area on the LCD 17A to another electronic device. Under the control of the processing unit 302, the reception control unit 304 uses the wireless communication device 107 to execute processing for receiving information input to the display area of another electronic device from the other electronic device.

  The processing unit 302 executes a process for sharing handwritten information among a plurality of electronic devices. The processing unit 302 includes a member management unit 311, a storage processing unit 312, a follow-up processing unit 313, a preview processing unit 314, and the like.

  The member management unit 311 manages each member (electronic device) logged into the handwriting sharing service. The member management unit 311 can determine whether or not to permit login to an electronic device requesting login to the handwriting sharing service. The electronic device that has received permission from the member management unit 311 is permitted to log in to the handwriting sharing service, and is thereby connected to other electronic devices that are logged in to the handwriting sharing service. The function of the member management unit 311 may be executed only in an electronic device (group owner electronic device) operating as a handwriting collaboration server system.

  The storage processing unit 312 executes processing for storing data received from other electronic devices in the database 12. Each data may be stored in the database 12 in a state associated with the display area. As for the handwritten data, each point data is stored in the database 12 together with a time stamp.

  The tracking processing unit 313 switches the display area displayed on the LCD 17A between the display areas 111, 112, and 113 in response to switching of the display area displayed on another device (for example, a group owner device). Execute the process.

  Assume that a certain display area (first display area) is displayed on the LCD 17A. If the display area displayed by the group owner's electronic device 10A is changed from the first display area to another display area (second display area), the tracking processing unit 313 displays the display area displayed on the LCD 17A. Change from the first display area to the second display area. Thereby, the same display area as the display area newly displayed by the electronic device 10A of the group owner can be automatically displayed on the LCD 17A.

  Next, after the first display area displayed on the LCD 17A is changed to the third display area by the finger gesture, the display area displayed by the electronic device 10A of the group owner is changed from the first display area to the second display area. Assume a change. In this case, the display area displayed on the LCD 17A and the display area displayed by the group owner's electronic device 10A are not already synchronized. For this reason, the follow-up processing unit 313 does not execute a process for changing the display area displayed on the LCD 17A.

  Furthermore, the follow-up processing unit 313 also executes the above-described forced synchronization process and self-synchronization process.

  Assume that the tablet computer 10 functions as an electronic device of a participant. The follow-up processing unit 313 receives the above-described forced synchronization request from the group owner electronic device 10A. The follow-up processing unit 313 executes a process for displaying the same display area on the LCD 17A as the display area currently displayed on the electronic device 10A of the group owner, regardless of which display area is displayed on the LCD 17A. To do. The display area currently displayed in the group owner's electronic device 10A may be specified by a forced synchronization request. Alternatively, the tracking processing unit 313 may inquire the electronic device 10A about the display area currently displayed on the electronic device 10A.

  If the above-described button 52 displayed on the LCD 17A is operated by the user, the follow-up processing unit 313 executes processing for specifying a display area currently displayed on the group owner's electronic device 10A. In this case, the tracking processing unit 313 may inquire the electronic device 10A about the display area currently displayed on the electronic device 10A. Then, the follow-up processing unit 313 executes processing for changing the display area displayed on the LCD 17A to the specified display area.

  The preview processing unit 314 executes the above-described preview processing. If the “preview” button displayed on the LCD 17A is operated by the user, the preview processing unit 314 previews the entire canvas 30A in a form that can identify which display area is currently displayed by each electronic device. The image is displayed on the LCD 17A.

  The flowchart in FIG. 18 shows the procedure of the follow-up process.

  The processing unit 302 displays a first display area in the canvas 30A capable of displaying the shared electronic document on the LCD 17A (block B11). Information input to the first display area on the LCD 17A is transmitted to other electronic devices. Information input to the first display area by another electronic device is displayed on the first display area on the LCD 17A.

  The processing unit 302 determines whether or not a finger gesture for moving the screen is detected at a position on the LCD 17A (block B12). In block B12, it is detected whether or not a finger gesture (for example, swipe) for moving the screen has been performed according to the finger movement detected by the touch panel 17B. If this finger gesture is detected (YES in block B12), the processing unit 302 moves the canvas 30A to change the display area displayed on the LCD 17A from the first display area to another display area. (Block B13).

  Next, the processing unit 302 determines whether or not the display area displayed on another electronic device (for example, the electronic device of the group owner) has been changed (block B14). In block B14, the processing unit 302 may determine that the display area displayed on the electronic device of the group owner has been changed on the condition that the canvas movement information is received from the electronic device of the group owner.

  If the display area displayed on the group owner's electronic device is changed (YES in block B14), the processing unit 302 determines whether the display area on the LCD 17A is synchronized with the display area of the group owner's electronic device. It is determined whether or not (block B15). In block B15, it is determined that the display area on the LCD 17A is synchronized with the display area of the electronic device of the group owner until the display area displayed on the LCD 17A is changed by the finger gesture for moving the screen. May be. On the other hand, after the display area displayed on the LCD 17A is changed by the finger gesture for moving the screen, even if it is determined that the display area on the LCD 17A and the display area of the electronic device of the group owner are not synchronized. good. Even after the display area displayed on the LCD 17A is changed by the finger gesture for moving the screen, if the forced synchronization process or the self-synchronization process is executed, the display area on the LCD 17A and the electronic information of the group owner are displayed. The display area of the device is again synchronized.

  Alternatively, in block B15, the display area on the LCD 17A and the display of the electronic device of the group owner are displayed on the condition that the display area before the change in the electronic device of the group owner is the same as the display area currently displayed on the LCD 17A. It may be determined that the area is synchronized.

  If the display area on LCD 17A is synchronized with the display area of the group owner's electronic device (YES in block B15), processing unit 302 uses the display area displayed on LCD 17A as the electronic device of the group owner. The display area is changed to the same display area as currently displayed (block B16). For example, when the display area displayed by the electronic device of the group owner is changed from the first display area to the second display area while the first display area is displayed on the LCD 17A, the processing unit 302 In block B16, a process for changing the display area displayed on the LCD 17A from the first display area to the second display area is executed. On the other hand, when the display area displayed by the electronic device of the group owner is changed from the first display area to the second display area while a display area different from the first display area is displayed on the LCD 17A, The processing unit 302 does not execute a process for changing the display area displayed on the LCD 17A from the first display area to the second display area.

  Next, the processing unit 302 determines whether or not a forced synchronization request has been received from the electronic device of the group owner (block B17). If the processing unit 302 receives the forced synchronization request (YES in block B17), the processing unit 302 changes the display area displayed on the LCD 17A regardless of which display area is displayed on the LCD 17A. Then, the same display area as that currently displayed on the group owner's electronic device (that is, the display area specified by the forced synchronization request) is displayed on the LCD 17A (block B18).

  Next, the processing unit 302 determines whether the user interface (synchronization button 52) displayed on the LCD 17A has been operated by the user (block B19). If the synchronization button 52 is operated (YES in block B19), the processing unit 302 inquires the electronic device of the group owner about the currently displayed display area, and is currently displayed on the electronic device of the group owner. Specify the display area. Then, the processing unit 302 changes the display area displayed on the LCD 17A to the specified display area (block B20).

  The flowchart in FIG. 19 shows the procedure of the preview process.

  When the “preview” button is operated by the user, the processing unit 302 generates a preview image of the canvas 30A by reducing the entire canvas 30A (block B21). Furthermore, the processing unit 302 specifies the display area currently displayed on each of the other electronic devices by inquiring about the display area currently displayed on each of the other electronic devices or the electronic device of the group owner. Then, the processing unit 302 displays the preview image on the LCD 17A in a form that can identify which display area of the canvas 30A is currently displayed by each electronic device. In this case, the processing unit 302 may display a frame surrounding the display area viewed by each participant on the preview image. Further, the processing unit 302 may display information (for example, the tag described with reference to FIGS. 14 and 15) that can identify the user who is viewing each display area on the preview image.

  The processing unit 302 determines whether or not a display area (area surrounded by a frame) on the preview image has been selected by the user (block B22). If a certain display area on the preview image is selected by the user (YES in block B22), the processing unit 302 ends the process of displaying the preview image, and displays the selected display area on the LCD 17A in the normal size. Is displayed (block B23).

  As described above, in the present embodiment, a display area displayed by another device (for example, a device of a group owner) in a state where the first display area in the plurality of display areas is displayed on the LCD 17A. When the display area is changed from the first display area to the second display area, a process for changing the display area displayed on the LCD 17A from the first display area to the second display area is executed. Further, in a state where another display area different from the first display area is displayed on the LCD 17A, the display area displayed by another device (for example, a group owner device) is changed from the first display area to the second display area. When the display area is changed to, the process for changing the display area displayed on the LCD 17A from the first display area to the second display area is not executed.

Thus, when each device changes the display area without preventing each participant from freely browsing any display area in the plurality of display areas, each participant The display area displayed on the other device can be automatically changed to the same display area as the new display area displayed on the group owner device. Therefore, a part of attention by another user such as a group owner can be presented to each participant. The function of the handwriting collaboration server system (electronic device 10A) of the present embodiment is realized by one or more processors. it can.

  Moreover, since the function of the handwriting collaboration server system (electronic device 10A) of this embodiment can be realized by a computer program, the computer program is installed in the computer through a computer-readable storage medium storing the computer program. The effect similar to this embodiment can be easily realized only by executing.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

Claims (15)

A network-connected electronic device capable of logging in to a collaboration server system including at least a first electronic device that is an owner and a second electronic device that is a participant using a device ID or a user ID,
In order to realize a canvas wider than the physical screen size of the electronic device, the display device includes a plurality of display areas, and each display area is a shared screen capable of displaying information input in the first electronic device and the second electronic device. A display on which the functioning canvas is displayed;
Comprising processing means for executing the shared application program including the shared collaboration, to,
The processing means includes
According to the movement operation for changing the display area, any one display area of the plurality of display areas can be displayed on the display,
In a state where the first area in synchronization with the display and the first first display area displayed on the electronic device is being displayed, the second from the display is the first display area of the first electronic device When the display area is changed, a process for changing the display area displayed on the display following the change from the first display area to the second display area is executed.
Is not synchronized with the first display area being displayed on the first electronic device, while the Table shows the area that is different from said the display first display area is displayed, the display of the first electronic device If a is changed from the first display area on the second display area, it does not execute the processing for changing the display area displayed on the display from the first display area to the second area,
Electronics. The processing means includes
A forced synchronization request for requesting the display of the same display area as the display area currently being displayed in the first electronic device, the first electronic device in response to operation of the user interface displayed on the first electronic device and processing for receiving the forced synchronization request transmitted from,
When receiving the compulsory synchronization request, the display which regardless of whether the display area is displayed in, for displaying the same display area as the display area currently being displayed in the first electronic device on the display The electronic device according to claim 1, wherein the processing is executed. A process for specifying a display area currently displayed on the first electronic device in response to a self-synchronization operation of a user interface displayed on the display;
The electronic device according to claim 1, wherein processing for changing a display area displayed on the display to the same display area as the specified display area is executed. The processing means displays the entire canvas in a form that can identify which display area of the canvas is currently displayed by an individual electronic device in response to a preview operation of a user interface displayed on the display. The electronic device according to claim 1, wherein a process for displaying on the electronic device is executed. The user interface for performing the self synchronous operation - displaying in response to button face to the move operation, the current display area to be displayed on the display by the display of the button display area of the first electronic device explicit electronic device according to claim 3, wherein you that not synchronized. A network-connected electronic device capable of logging in to a collaboration server system including at least a first electronic device as an owner and a second electronic device as a participant using a device ID or a user ID, A plurality of display areas are included to realize a canvas wider than the physical screen size of the electronic device, and each display area functions as a shared screen capable of displaying information input in the first electronic device and the second electronic device A method executed by an electronic device comprising: a display on which the canvas is displayed; and processing means for executing a shared application program including a shared collaboration function ,
In response to a moving operation for changing the display area, one of the plurality of display areas can be displayed on the display;
In a state where the first area in synchronization with the display and the first first display area displayed on the electronic apparatus is displayed, the second display displays the first electronic device from the first display area When changing to an area, following the change, executing a process for changing the display area displayed on the display from the first display area to the second display area;
Is not synchronized with the first display area being displayed on the first electronic device, while the Table shows the area that is different from said the display first display area is displayed, the display of the first electronic device and it but not to execute a process for changing when it is changed from the first display area on the second display area, the display area being displayed on the display from the first display area to the second area,
A method comprising: A forced synchronization request for requesting the display of the same display area as the display area currently being displayed in the first electronic device, the first electronic device in response to operation of the user interface displayed on the first electronic device Receiving the forced synchronization request transmitted from the first electronic device;
When receiving the compulsory synchronization request, and displaying regardless of what display area on the display is being displayed, the same display area as the display area currently being displayed in the first electronic device on the display The method of claim 6, further comprising: Identifying a display area currently displayed on the first electronic device in response to a self-synchronization operation of a user interface displayed on the display;
The method according to claim 6, further comprising changing the display area displayed on the display to the same display area as the identified display area. In response to a preview operation of the user interface displayed on the display, the entire canvas is displayed on the display in a form that can identify which display area of the canvas is currently displayed by each electronic device. The method of claim 8, further comprising: The user interface for performing the self synchronous operation - displaying in response to button face to the move operation, the current display area to be displayed on the display by the display of the button display area of the first electronic device the method of claim 8, wherein you specify that not synchronized. A network-connected electronic device capable of logging in to a collaboration server system including at least a first electronic device as an owner and a second electronic device as a participant using a device ID or a user ID, A plurality of display areas are included to realize a canvas wider than the physical screen size of the electronic device, and each display area functions as a shared screen capable of displaying information input in the first electronic device and the second electronic device A program executed by a computer comprising a display on which the canvas is displayed and a processing means for executing a shared application program including a shared collaboration function ,
In accordance with a moving operation for changing the display area, a procedure for displaying any one display area of the plurality of display areas on the display;
In a state where the first area in synchronization with the display and the first first display area displayed on the electronic apparatus is displayed, the second display displays the first electronic device from the first display area If it is changed in the area, and how to change the display area by following the change are displayed on the display from the first display area on the second display area,
Is not synchronized with the first display area being displayed on the first electronic device, while the Table shows the area that is different from said the display first display area is displayed, the display of the first electronic device and procedures but do not change when it is changed from the first display area on the second display area, the display area being displayed on the display from the first display area to the second area,
A program comprising: A forced synchronization request for requesting the display of the same display area as the display area currently being displayed in the first electronic device, the first electronic device in response to operation of the user interface displayed on the first electronic device a step of receiving the forced synchronization request from said first electronic device to be transmitted from,
When receiving the compulsory synchronization request, the procedure for displaying regardless of what display area on the display is being displayed, the same display area as the display area currently being displayed in the first electronic device on the display further claim 11, wherein a program having a. In accordance with a self-synchronization operation of a user interface displayed on the display, a procedure for specifying a display area currently displayed on the first electronic device;
The program according to claim 11 , further comprising a step of changing a display area displayed on the display to the same display area as the specified display area. In accordance with a preview operation of the user interface displayed on the display, a procedure for displaying the entire canvas on the display in a form that can identify which display area of the canvas is currently displayed by an individual electronic device. The program according to claim 11, further comprising: The user interface for performing the self synchronous operation - displaying in response to button face to the move operation, the current display area to be displayed on the display by the display of the button display area of the first electronic device further to that claim 13 programs include a manifest procedures that are not synchronized.

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