JP2014146233A - Material sharing program, terminal device, material sharing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material sharing program, a terminal device and a material sharing method for making a computer execute processing of: if a location of a note attached to a material at another terminal device is outside a display range, noticing a reception of the note; and storing the current display range so as to enable a return to the original display range after displaying the note.SOLUTION: A CPU is capable of: noticing a reception of a note; and if an operation by a user associated to the notification is detected (S17: YES), storing information of a current display range (S37); and changing to a display range including the note (S39). If the operation by the user is for displaying a display range of a material stored in the past, after the user has browsed the note (S21: YES), the CPU 11 is capable of storing the current display range (S27) and displaying the past display range read-out from a history table (S29).

Description

  The present invention relates to a data sharing program, a terminal device, and a data sharing method that can be executed by a computer of a terminal device that transmits and receives various data between a plurality of terminal devices connected via a network.

  A program such as a remote conference product for sharing materials between a plurality of terminal devices via a network is known. These programs are executed by a computer of a terminal device such as a personal computer, a smartphone, or a tablet terminal. The user of the terminal device can display the shared material on the display unit and perform a remote conference or work while referring to the material. The size and resolution of the display unit of these terminal devices vary depending on the terminal device. Therefore, users of some terminal devices can read the material even if the entire material is displayed on the display unit as the display range. In addition, when the entire document is displayed on the display unit as a display range, some terminal device users may not be able to read the document due to the size of the display unit. In this case, the user can read the material by enlarging the material so that a part of the material falls within the display range.

  When the first user adds an annotation or the like to the material, there is a display method in which the display unit can indicate a range common to the display range of the material in another terminal device (see, for example, Patent Document 1). In Patent Document 1, the first user adds an annotation within the range, so that the second user using another terminal device can refer to the annotation without changing the display range.

JP-A-9-198228

  However, when the user enlarges the material, there may be a region that is not common in the display range of the material in each terminal device. For example, when the position where the annotation is added by the first user is outside the display range on the terminal device of the second user, the second user may not notice that the annotation is added to the material. In such a case, the computer of the terminal device may display the entire document as a display range on the display unit so that the second user can refer to the annotation. However, the second user is interrupted to read the document because the entire document is displayed despite being enlarged to read the document. After the second user refers to the annotation that is displayed in a reduced size together with the material, it is necessary to perform an operation for enlarging the material to return the display on the display unit to the original display range. There's a problem.

  The present invention has been made to solve the above-described problems. When the position of the annotation added to the document is out of the display range in another terminal device, the reception of the annotation is reported, and after the annotation is displayed. An object of the present invention is to provide a material sharing program, a terminal device, and a material sharing method for causing a computer to execute processing for storing a current display range so that the original display range can be restored.

  According to the first aspect of the present invention, there is provided a program executable by a computer of the terminal device that transmits and receives various types of data between a plurality of terminal devices connected via a network. A first display step of displaying on the display unit of the terminal device a display range indicating at least a part of the material based on the material data indicating the material shared between the terminal devices; and adding to the material in another terminal device In the receiving step of receiving the annotation data indicating the performed annotation, the first determination step of determining whether or not the position of the annotation based on the annotation data is included in the display range, and the first determination step When it is determined that the position of the annotation is not included in the display range, a notification indicating that the annotation data has been received in the reception step A notification step of outputting a signal, a second determination step of determining whether or not the operation information acquired from the operation unit that receives an operation input by a user is operation information indicating an operation corresponding to the notification signal, When the operation information is determined to indicate an operation corresponding to the notification signal in two determination steps, a first memory that stores the current display range of the material as a first display range in a storage device included in the terminal device And a second display step in which a position including the annotation based on the annotation data is set as a new display range as a second display range and displayed on the display unit. A shared program is provided.

  By executing the material sharing program of the first aspect, the computer can output a notification signal to inform the user of the reception of the annotation. Furthermore, when the user performs an operation corresponding to the notification signal, the computer can store the current display range as the first display range. Therefore, the computer can set the display range to the second display range including the annotation, and return the display range to the first display range after the user views the annotation. In other words, after viewing the annotation included in the second display range, the user displays the display range equivalent to the original first display range, so that it is stored in the storage device without having to perform multi-step operations. If the first display range is called, the first display range can be easily browsed again.

  In the first aspect, in the computer, a third determination step for determining whether the operation information is operation information indicating an operation corresponding to re-display of the first display range stored in the first storage step; A second storage step of storing the second display range in the storage device when the operation information is determined to indicate an operation corresponding to the re-display of the first display range in the third determination step; After the second display range is stored in the storage device in the second storage step, the first display range is set to the display range again and displayed on the display unit. May be. The user can stop browsing the first display range that is currently displayed, browse the annotations included in the second display range, and then browse the original first display range again. The trouble of performing multi-stage operation can be reduced.

  In the first aspect, when the operation information is determined to indicate an operation corresponding to the notification signal in the second determination step, the first display range and the second display range are displayed on the computer. A fourth display step for displaying on the part, and a fourth determination step for determining whether the operation information is operation information indicating an operation corresponding to the second display range displayed in the fourth display step. Further, it may be executed. In this case, when it is determined in the fourth determination step that the operation information is an operation corresponding to the display of the second display range, the first storage step stores the first display range in the storage device. In the second display step, the second display range may be set as the display range and displayed on the display unit. By displaying the first display range and the second display range at the same time, the user can select which display range to display. You can browse annotations later.

  In the first aspect, a fifth determination step for determining whether the operation information is operation information indicating a change in at least one of a position and a size of the display range in the material, and the fifth determination in the first aspect. A third storage step of storing the current display range of the material in the storage device as a third display range when the operation information is determined to indicate the change of the display range in a step; The changed range may be set as a new display range as a fourth display range, and a fifth display step of displaying on the display unit may be further executed. Even if the position and size of the display range are changed, the display range before the change can be stored, so that the user can easily perform an operation when the user wants to display the display range displayed in the past again. .

  In the first aspect, when the computer determines that the position of the annotation is not included in the display range in the first determination step, the position of the annotation based on the annotation data is different from the annotation. A sixth determination step for determining whether or not the position of another annotation is a predetermined distance may be further executed. In this case, the notification step does not have to output the notification signal when it is determined in the sixth determination step that the position of the annotation is not separated from the position of the other annotation by a predetermined distance. Good. When the positions of a plurality of received annotations are close to each other, the annotations are likely to be a group of annotations in which adjacent annotations have a single meaning. If the computer does not output the notification signal when the annotations are close to each other, the notification signal is not output every time the annotations constituting such an annotation group are received, and the user is bothered. I don't feel.

  In the first aspect, the annotation data may include additional time data indicating a time when the annotation is added to the material in another terminal device. A seventh determination step of determining whether or not the addition time of the annotation data received this time in the reception step has elapsed from the addition time of the annotation data received last time in the computer; It may be executed. In this case, in the notification step, in the seventh determination step, it is determined that the addition time of the annotation data received this time has not passed a predetermined time from the addition time of the annotation data received last time. In this case, the notification signal need not be output. A computer may receive a plurality of annotations in succession by adding a plurality of annotations to a document continuously in another terminal device or by adding annotations to a document in a plurality of terminal devices at the same time. is there. Even in such a case, since the notification signal is not output every time an annotation is received, the user does not feel bothered.

  According to the second aspect of the present invention, a terminal device that transmits and receives various data between a plurality of terminal devices connected via a network, the material data indicating a material shared between the plurality of terminal devices First display means for displaying on the display unit of the terminal device a display range showing at least a part of the material based on the receiving means, and receiving means for receiving the annotation data indicating the annotation added to the material in another terminal device First determination means for determining whether or not the position of the annotation based on the annotation data is included in the display range, and the position of the annotation is included in the display range by the first determination means. If it is determined that the operation information acquired from the notification unit that outputs a notification signal indicating that the reception unit has received the annotation data and an operation unit that receives an operation input by a user, Second determination means for determining whether or not the operation information indicates an operation corresponding to the intelligence signal; and when the second determination means determines that the operation information indicates an operation corresponding to the notification signal, First storage means for storing the current display range as a first display range in a storage device included in the terminal device, and a position including the annotation based on the annotation data as a second display range as a new display range And a second display unit configured to display on the display unit.

  According to a third aspect of the present invention, there is provided a material sharing method executable by a computer of the terminal device for transmitting and receiving various data between the plurality of terminal devices connected via a network, the plurality of terminal devices. A first display step of displaying on the display unit of the terminal device a display range indicating at least a part of the material based on the material data indicating the material shared between, and added to the material in another terminal device A receiving step of receiving annotation data indicating an annotation, a first determination step of determining whether or not the position of the annotation based on the annotation data is included in the display range, and the display in the first determination step When it is determined that the position of the annotation is not included in the range, a notification that outputs a notification signal indicating that the annotation data has been received in the reception step In the second determination step for determining whether or not the operation information acquired from the operation unit that receives an operation input by the user is operation information indicating an operation corresponding to the notification signal, and in the second determination step, When it is determined that the operation information indicates an operation corresponding to the notification signal, a first storage step of storing the current display range of the material as a first display range in a storage device included in the terminal device, and the annotation And a second display step of setting the position where the annotation based on the data is included as a second display range to the new display range and displaying the position on the display unit. .

  By using the terminal device of the second aspect or sharing the material according to the material sharing method of the third aspect, the same effect as that of the first aspect can be obtained.

It is a figure which shows the schematic structure of the system which the terminal device in which the document sharing program was installed, and the electrical structure of the smart phone 1. It is a figure which shows the mode of the document 5 displayed on the display. It is a figure which shows the mode of the document 5 displayed on the monitor. It is a flowchart which shows the data display process of a data sharing program. It is a flowchart which shows the data change process of a data sharing program. It is a flowchart which shows the annotation addition process of a document sharing program. It is a figure which shows the mode of the document 5 enlargedly displayed on the display. It is a figure which shows a mode that the display area 61 of the display 16 was divided | segmented into 2 screens of the upper area | region 61A and the lower area | region 61B. It is a figure which shows the mode of the document 5 enlargedly displayed on the display.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. With reference to FIG. 1, the system which the terminal device in which the data sharing program based on this invention was installed comprises is demonstrated. In the present embodiment, as an example of a terminal device, a smartphone 1, a tablet terminal 3, and a personal computer (hereinafter referred to as “PC”) 4 shown in FIG. The smartphone 1 and the tablet terminal 3 include touch panels 19 and 31 each having a display unit and an input unit integrated. The PC 4 includes a monitor 41 as a display unit, and includes a mouse 42 and a keyboard 43 as input units. The smartphone 1, the tablet terminal 3, and the PC 4 can be connected to each other via the network 9 so that they can communicate with each other.

The network 9 is connected to a server 2 constructed using a PC having a known configuration. The server 2 logs in to the computer of the smart phone 1, the tablet terminal 3, and the PC 4, and constructs a system that can share materials (described later).
Any terminal device of the smartphone 1, the tablet terminal 3, or the PC 4 can be set as an organizer terminal device used by the organizer of the conference using the materials. The user of the organizer terminal device stores the material data of the material used in the conference in the storage device of the organizer terminal device by means such as reading from the recording medium and downloading via the network 9. The user operates the organizer terminal device to transmit the material data of the material used in the conference to the server 2. The server 2 transmits the received material data to each logged-in terminal device via the network 9. The computers of the smartphone 1, the tablet terminal 3, and the PC 4 each execute a material sharing program and display the material data received from the server 2 on each display unit. In this way, sharing of materials is realized. Note that the document data may be stored in advance in a storage device (not shown) included in the server 2. Similarly, annotation data indicating an annotation to be described later is transmitted from the terminal to which the annotation is input to the server 2. Then, the server 2 transmits the received annotation data to each logged-in terminal device, whereby it is possible to display the annotation for the shared material in each terminal device. Note that the annotation data may be transmitted and received by direct communication between terminal devices.

  The storage device of the server 2 stores a material sharing program to be described later. The smartphone 1, the tablet terminal 3, and the computer of the PC 4 logged into the server 2 via the network 9 can download and install the material sharing program. When a program download server is provided separately from the server 2, each terminal device can download and install the material sharing program from the program download server. The document sharing program is provided by being compiled into a code corresponding to each terminal device. Since the display method of the data in each terminal device or the operation method for the material conforms to the input / output device of each terminal device, it may be different. However, the results obtained by the computer of each terminal device executing the material sharing program are substantially the same. In the following, focusing on the smartphone 1 for convenience, the electrical configuration of the smartphone 1 and the operation associated with the execution of the document sharing program will be described.

  The smartphone 1 includes a CPU 11 that controls the smartphone 1. The CPU 11 is electrically connected to the ROM 12, RAM 13, flash memory 14, communication interface (hereinafter referred to as “communication I / F”) 15, display 16, touch pad 17, and operation buttons 18. The ROM 12 stores a boot program, BIOS, and the like. The RAM 13 stores a timer, a counter, temporary data, and the like. The flash memory 14 stores a control program for the CPU 11. A material sharing program, which will be described later, and an operating system (OS) of the smartphone 1 are stored in the flash memory 14. Note that the timer stored in the RAM 13 is generated using a standard function of the OS.

  The communication I / F 15 is an interface for performing wireless communication according to a communication standard such as a wireless LAN such as WiFi (registered trademark) or 3G, LTE (Long Term Evolution), 4G. The smartphone 1 is connected to an access point (not shown) of the network 9. Similarly, the smartphone 1 communicates with the server 2, the tablet terminal 3, and the PC 4 connected to the network 9 via the network 9. The smartphone 1 may communicate directly with the server 2, the tablet terminal 3, and the PC 4 via the wireless LAN without going through the network 9. The communication I / F 15 may be an interface that performs wired communication.

  The display 16 is a display device such as a liquid crystal panel. For example, the display 16 has a size of 4 inches across and an aspect ratio of 16: 9. The display 16 may be a display device using other display methods such as an organic EL (Organic Electro-Luminescence) display. The touch pad 17 detects a position touched by a user's finger or the like. The touch pad 17 is, for example, a capacitance type position detection device. Note that the touch pad 17 may be a position detection device using other detection methods such as a pressure-sensitive touch pad. The display 16 and the touch pad 17 are formed in substantially the same size. The touch pad 17 is provided on the display 16 so that the touch panel 19 is configured. The operation button 18 is a physical switch that allows the user to perform an input operation on the smartphone 1 in addition to the touch pad 17. In the present embodiment, the operation button 18 is used to end the execution of the material sharing program (end of the application).

  The CPU 11 of the smartphone 1 having such a configuration is connected to the server 2, the tablet terminal 3, and the PC 4 via the network 9 in accordance with the execution of the material sharing program, and shares the material via the server 2. The material is, for example, information composed of text, graphics, tables, graphs, images, videos, or combinations thereof. The document is content that can be browsed by the computer of the terminal device (for example, the CPU 11 of the smartphone 1) displayed on the display unit (for example, the display 16 of the smartphone 1). The material is indicated by material data that is data in a format that can be handled by a computer. The document data is transmitted from the server 2 and stored in the storage device of the terminal device (for example, the flash memory 14 of the smartphone 1).

  Along with the execution of a material sharing program to be described later, the computer of the terminal device performs a material data reception process, a material display process based on the material data, a process corresponding to a user operation on the material, and the like. The computer also performs processing related to adding annotations to the material by the user of the terminal device. The terminal device shares the annotation in addition to the material. Since these processes are publicly known, the operation of the terminal device related to document browsing and annotation addition will be schematically described below using the smartphone 1 as an example. In the present embodiment, the computer notifies the reception of the annotation when receiving the annotation added to the document by the user of another terminal device. The processing related to the notification of the annotation reception and the display of the annotation will be described by taking the smartphone 1 as an example in the description of the flowchart of the material sharing program described later.

  The material based on the material data is displayed on the display unit of each terminal device. For example, as illustrated in FIG. 2, the CPU 11 of the smartphone 1 sets, on the display 16, a display area 61 that can display the document 5 and an operation area 62 that receives an operation input by the user, in accordance with the execution of the document sharing program. . The CPU 11 reads the material data from the flash memory 14 and displays the material 5 based on the material data in the display area 61. In the operation area 62, for example, a setting button 65, an annotation addition button 63, and the like are provided.

  The setting button 65 is a button operated when the user shifts to a setting mode for setting the operation of the material sharing program. In the setting mode, when a conference using a plurality of materials is performed using the material sharing program, the material displayed on the conference organizer's terminal device is displayed in the display area 61 of the conference participant's terminal device. The follow-up mode can be switched ON / OFF. The setting of ON / OFF of the tracking mode is stored in the flash memory 14. Further, the user can set the user's terminal device as the organizer terminal device in the setting mode. The computer of the terminal device set as the organizer terminal device can transmit the material data of the material shared in the conference to the server 2. The annotation addition button 63 is a button operated when the user shifts to a mode for adding an annotation to the material 5.

  The document 5 is assumed to be a substantially square drawing in which, for example, three figures 51, 52, and 53 are drawn without overlapping on a plane. Further, in the document 5, the figures 51 and 52 are arranged at the upper left part and the upper right part from the center of the document 5, respectively. The graphic 53 is arranged below the center. In the document 5, the part set as the display range is displayed in the display area 61 of the display 16. As shown in FIG. 2, when the entire document 5 is set as a display range 71 indicated by a one-dot chain line in the drawing, the entire document 5 is displayed so that the display range 71 is included in the display area 61 of the display 16. The Similarly, as shown in FIG. 3, the CPU (not shown) of the PC 4 can display the material 5 based on the material data on the monitor 41. The monitor 41 has a size of, for example, 19 inches across and an aspect ratio of 4: 3. Therefore, the user of the PC 4 can read the details of the material 5 displayed on the monitor 41 without enlarging the details.

  On the other hand, the display 16 of the smartphone 1 is smaller than the monitor 41 of the PC 4. As described above, the display 16 of the smartphone 1 is, for example, 4 inches across. As shown in FIG. 2, when the entire document 5 is set in the display range 71 and the entire document 5 is displayed in the display area 61 of the display 16, it is difficult for the user of the smartphone 1 to read details of the document 5. There is a case. In such a case, the user touches the touch pad 17 with a finger or the like, and for example, the display range 71 including the entire document 5 is changed to a display range 72 (indicated by a one-dot chain line in the figure) including only the graphic 51. A known pinch operation for narrowing is performed. The pinch operation is, for example, an operation of touching the touch pad 17 with two fingers and changing the interval between the two fingers on the touch pad 17. The pinch operation corresponds to enlargement when the interval between two fingers is widened, corresponds to enlargement when the interval is narrowed, and the change width of the interval corresponds to the magnification.

  The CPU 11 of the smartphone 1 detects the user's operation based on the position detection by the touch pad 17, and displays the part in the display range 72 of the document 5 in the display area 61, thereby displaying the document 5 on the display 16 in an enlarged manner. (See FIG. 7). Further, when the user performs a known swipe operation, the CPU 11 scrolls the document 5 in the display area 61 by changing the position of the display range 72 in the document 5 according to the operation while the document 5 is enlarged. Can be made. The swipe operation is an operation of moving the finger that touched the touch pad 17 on the touch pad 17 without releasing the finger from the touch pad 17.

  As described above, the user of each terminal device can add an annotation to the material. The annotation is information that can be drawn so that the user of the terminal device can use the input device (touch pad 17, mouse 42, keyboard 43, etc.) to be superimposed on the document. The computer of the terminal device displays the annotations in layers on the material. When the user adds an annotation to the material, the computer obtains information on a position where the annotation is drawn in the material, and generates annotation data in which the data of the rendered annotation is associated with the material. The annotation data may be raster image data in which dots (dots) are arranged at positions where the user touches the touch pad 17 when an annotation is added, and an aggregate of a plurality of dots is represented as an image. Alternatively, a vector that represents an image by recording a plurality of coordinate data of positions touched by the touch pad 17 when the user adds an annotation, connecting the coordinate data with a line, and painting a portion surrounded by the line It may be image data. Further, character data input using a character input function installed in the OS or data obtained by drawing a character as an image may be handled as annotation data.

  The computer of the terminal device that generated the annotation data simultaneously transmits the annotation data to the other terminal devices via the server 2. The computer constructs an annotation table (not shown) in the storage device (flash memory 14 in the smartphone 1) when executing the material sharing program. The computer of the terminal device that has received the annotation data receives the received annotation data (identification information of the associated material (file name, ID, etc. of the material data), position information in the material, image data) in the order received. To remember. In addition, in the annotation table, a flag (reception flag) indicating that it has been newly received for each annotation data, and a flag (undisplayed flag) indicating that no annotation is displayed based on the annotation data And an update time indicating a time when the user creates or updates the annotation is stored in association with each other.

  For example, as shown in FIG. 3, the CPU (not shown) of the PC 4 displays the material 5 on the monitor 41 in accordance with the execution of the material sharing program. The user of the PC 4 can draw the annotation 55 on the document 5 after operating the mouse 42 (see FIG. 1) to move the cursor 44 and clicking the annotation addition button 63. The annotation 55 is drawn, for example, from the lower left margin of the graphic 52 of the document 5 to the vicinity of the center of the graphic 53. The CPU of the PC 4 obtains position information in the document 5 of the annotation area 55A indicating the area where the annotation 55 is drawn. In the present embodiment, the annotation area is represented by a rectangle circumscribing the annotation. The coordinates of the four corner points of the rectangle obtained with reference to the material are positional information of the annotation area. Specifically, for example, the CPU of the PC 4 uses the upper left corner point of the document 5 as a reference (origin), and represents the entire document 5 in the XY coordinate system. The CPU of the PC 4 calculates the coordinates at which the four corner points of the annotation area 55A are located on the document 5, and obtains them as position information. The CPU of the PC 4 associates the drawn image data of the annotation 55 and the obtained position information with the material 5 to which the annotation 55 is added, adds an update time, and generates the annotation data. The CPU of the PC 4 transmits the annotation data to another terminal device, that is, the smartphone 1 and the tablet terminal 3 via the server 2. Specifically, the CPU of the PC 4 transmits the annotation data to the server 2 via the network 9. The server 2 transmits the annotation data received from the PC 4 to other terminal devices.

  The user can arbitrarily add an annotation to each of a plurality of materials. In addition, the user can add a plurality of annotations to one material. For example, when the user adds the annotation 56, the CPU of the PC 4 associates the position information of the annotation area 56A with the document 5 together with the image data of the annotation 56, adds the update time, and generates the annotation data. The CPU of the PC 4 transmits the generated annotation data to another terminal device via the server 2. The annotation 56 is drawn, for example, slightly lower right than the center of the graphic 53. As will be described later, when the CPU of the terminal device receives a plurality of annotations, it notifies the reception of the annotations according to the distance between the annotations and the update time.

  Specifically, the CPU notifies the previously received annotation and obtains the coordinates of the center point of the four corner points of the annotation area by calculation for the later received annotation. Similarly, the CPU obtains the coordinates of the center points of the four corner points of the annotation area by calculation for the previously received annotation. The CPU calculates a difference in distance between the two annotations, and when the distance from the previously received annotation is longer than a predetermined distance, the CPU notifies the reception of the received annotation received later. In addition, even when the distance between the annotations is within the predetermined distance, the CPU similarly applies when the update time of the later received annotation has passed the predetermined time based on the previously received annotation update time. , Notification to notify the receipt of annotations. It is assumed that the distance between the annotation area 55A of the annotation 55 and the annotation area 56A of the annotation 56 shown in FIG. 3 is within a predetermined distance.

  In the execution of the material sharing program described later, the computer of the terminal device further constructs a history table (not shown) in the storage device (flash memory 14 in the smartphone 1) when executing the material sharing program. When changing the display range of the material displayed on the display 16, the computer stores information on the display range currently displayed in the history table. The computer stores, in the history table, the identification information of the currently displayed material and the coordinates of the four corner points of the display range as a history each time the display range is changed. Therefore, the computer can read information on the display range of the material displayed in the past from the history table and display it again on the display 16.

  Next, a series of processing related to the notification of annotation reception and the display of the annotation will be described with reference to the flowcharts of FIGS. The material display process shown in FIG. 4 is one of the modules whose processing is started when the CPU 11 of the smartphone 1 executes the material sharing program based on a user operation. When the CPU 11 executes the document sharing program based on the user's operation, the CPU 11 sets the display area 61 and the operation area 62 on the display 16. The CPU 11 starts executing the material display process, reads the material data of the material transmitted from the organizer terminal device via the server 2 from the flash memory 14, and displays the material based on the material data in the display area 61 ( S9). The identification information of the displayed material data is stored in the RAM 13. When there are a plurality of materials, the CPU 11 performs processing for selecting a material (for example, the material 5) to be displayed to the user when reading the material data. Further, a series of processes relating to the above-described document browsing (processes corresponding to user operations on the displayed documents, etc.) are performed by the CPU 11 executing another module (not shown) of the document sharing program. It is assumed that the document 5 in which the entire document 5 is set as the display range 71 is displayed in the display area 61 of the display 16 of the smartphone 1 as shown in FIG.

  The CPU 11 executes a subroutine for material change processing (S11). When the user of the organizer terminal device changes the material used during the meeting, the CPU of the organizer terminal device transmits the material data of the new material to the server 2 based on the user's operation. The server 2 transmits the material data of the new material received from the organizer terminal device to each terminal device. As described above, when receiving new material data from the server 2, the CPU 11 stores the new material data in the flash memory 14. As shown in FIG. 5, in the material change process, the CPU 11 determines whether material data is newly received from the server 2 based on the storage in the flash memory 14 (S51). If the new material data has not been received (S51: NO), the CPU 11 returns the processing to the material display processing of FIG.

  As shown in FIG. 4, the CPU 11 performs an annotation data acquisition process (S13). As described above, the computer of the terminal device in which the annotation is added to the material by the user transmits the annotation data to the server 2. The server 2 broadcasts the received annotation data to other terminal devices. When the CPU 11 receives the annotation data transmission request from the server 2, the CPU 11 receives the annotation data from the server 2 via the communication I / F 15 in S13. The CPU 11 stores the annotation data in the annotation table (not shown) in the flash memory 14 and the annotation data in association with the reception flag, the non-display flag, and the update time in the order of reception.

  The CPU 11 executes a subroutine for annotation addition processing (S15). As shown in FIG. 6, in the annotation addition process, the CPU 11 refers to the annotation table in the flash memory 14 and determines whether annotation data is newly received based on the state of the reception flag (S61). If the CPU 11 has not received any new annotation data and there is no annotation data whose reception flag is ON (S61: NO), the CPU 11 returns the processing to the material display processing of FIG.

  As shown in FIG. 4, the CPU 11 detects a user operation based on position detection by the touch pad 17 (S17). When there is no operation by the user or when there is an operation by the user and the operation is not an operation associated with the notification (S17: NO), the CPU 11 advances the process to S19. The specific operation content of the “operation associated with the notification” will be described later.

  Further, the CPU 11 determines whether or not there is an operation by the user, and the operation is an operation in which the user changes the display range (display range 71) of the current document 5 (S19). The operation for changing the display range includes an operation for changing the position of the display range, an operation for changing the size of the display range, and a flick operation in the left-right direction. As described above, the operation for changing the position of the display range is a swipe operation, and the operation for changing the size of the display range is a pinch operation, a known tap operation, or a known double tap operation. The tap operation is an operation of touching an arbitrary place on the screen with a finger and releasing the finger from the screen within a short time at that position. The double tap operation is an operation in which the tap operation is continuously performed twice. The flick operation is an operation of performing a swipe operation in one direction at a speed equal to or higher than a predetermined speed faster than the swipe operation, and releasing the finger from the touch pad 17 before reaching the edge of the screen. As will be described later, the operation content of the “operation associated with the notification” includes a swipe operation. Of the swipe operations, the operation to be determined by the CPU 11 in S19 is an operation that does not correspond to the “operation associated with the notification” in S17.

  When there is no operation by the user or when there is an operation by the user and it is determined that the operation is not the operation for changing the display range 72 (S19: NO), the CPU 11 advances the process to S41. When the user presses the operation button 18 (S41: YES), the CPU 11 ends the execution of the material sharing program. If the operation button 18 is not operated (S41: NO), the CPU 11 returns the process to S11. The CPU 11 does not receive new document data, does not receive new annotation data, and repeats the processes of S11 to S19 and S41 unless an operation by the user is detected.

  Next, in S19, when there is an operation by the user and the operation is an operation in which the user changes the position of the display range 72 (S19: YES), the CPU 11 performs a flick operation in the left-right direction. It is determined whether it exists (S21). When the operation by the user is not a left / right flick operation (S21: NO), the CPU 11 performs a process of storing information regarding the display range 71 currently being displayed. That is, as described above, the CPU 11 stores the identification information of the document 5 being displayed and the coordinates of the four corner points of the display range 71 in the history table of the flash memory 14 (S23). CPU11 changes the present display range 71 according to a user's operation, and displays a new display range on the display area 61 (S25). In the following, it is assumed that the user performs, for example, a pinch operation for enlarging and displaying the graphic 51 of the document 5, and the display range 72 (see FIG. 2) of the document 5 is displayed in the display area 61. CPU11 advances a process to S41 and repeats a process similarly to the above.

  In S <b> 21, when there is an operation by the user and the operation is a flicking operation in the horizontal direction (S <b> 21: YES), the CPU 11 determines the identification information of the currently displayed document 5 and the four corner points of the display range 72. The coordinates are stored in the history table of the flash memory 14 (S27). The CPU 11 reads the history table and displays the display range of the material stored in the past. The CPU 11 traces the history back in the flick operation to the right, traces the history to the latest history in the flick operation in the left direction, and displays the display range selected by the flick operation in the display area 61 (S29). CPU11 advances a process to S41 and repeats a process similarly to the above.

  Next, in S <b> 13, it is assumed that the CPU 11 receives annotation annotation data added to the material 5 by the user of another terminal device from the server 2 and stores it in the annotation table of the flash memory 14. As shown in FIG. 6, when the annotation data is newly received and there is annotation data whose reception flag is ON (S61: YES), the CPU 11 turns off the reception flag of the annotation data. The CPU 11 determines whether or not the material 5 currently displayed in the display area 61 is a material (annotation target material) associated with the new annotation data (S63). Specifically, the CPU 11 determines whether or not the identification information of the document data associated with the annotation data newly stored in the annotation table matches the identification information of the displayed document stored in the RAM 13. To do.

  When the annotation based on the newly received annotation data is not an annotation corresponding to the document 5 being displayed (S63: NO), the CPU 11 performs a notification prompting the display of the annotation target material (S65). The CPU 11 notifies the user by displaying the notification content on a notification bar 81 (see FIG. 7) displayed by sliding the upper frame of the display area 61 downward. Note that the upper frame of the display area 61 is a frame portion located above in the direction in which the user is looking at the display 16 when the CPU 11 performs the notification process. For example, when the name of the document 5 currently displayed is the first document and the name of the annotation target document is the second document, the CPU 11 displays “Please display the second document” on the notification bar 81. To do. If the number of characters to be displayed on the notification bar 81 is large, the CPU 11 may scroll the display content on the notification bar 81, or may display the notification bar 81 by dividing the number of characters that can be displayed in order for a certain period of time. . Further, the CPU 11 notifies the user by displaying a frame line 82 (see FIG. 7) along the frame of the display area 61 and blinking the frame line. The CPU 11 returns the processing to the material display processing of FIG. 4 when the notification for prompting the display of the annotation target material is performed.

  Returning to FIG. 6, in S63, when the annotation based on the newly received annotation data is an annotation corresponding to the document 5 being displayed (S63: YES), the CPU 11 determines whether the annotation area is included in the display range of the document. It is determined whether or not (S67). The CPU 11 acquires the position information of the annotation area included in the annotation data stored in the annotation table. As described above, the position information of the annotation area is indicated by the coordinates of the four corner points of the annotation area with reference to the material 5. Similarly, the display range is indicated by the coordinates of the four corner points with reference to the material 5. The CPU 11 obtains the location where the annotation area is located on the document 5 based on the position information. When the position of the annotation area is included within the display range 72 of the currently displayed document 5 (S67: YES), the CPU 11 displays the annotation based on the annotation data on the document 5 in a layered display (S69). That is, the annotation is displayed in the display area 61 of the display 16 of the smartphone 1. After displaying the annotation, the CPU 11 turns off the annotation data non-display flag and returns the processing to the material display processing of FIG.

  Next, returning to FIG. 6, when the position of the annotation area included in the newly received annotation data is outside the display range 72 of the currently displayed document 5 in S67 (S67: NO), the CPU 11 The process proceeds to S71. The CPU 11 reads the data with the non-display flag set to ON, with the annotation data received earlier than the newly received annotation data. If there is no data in which the undisplayed flag is ON in the annotation data received earlier than the newly received annotation data (S71: NO), the CPU 11 advances the process to S77.

  The CPU 11 performs a notification process for reporting the receipt of the annotation (S77). As illustrated in FIG. 7, the CPU 11 notifies the user by displaying the notification content on the notification bar 81. For example, the CPU 11 displays “Notice received” on the notification bar 81. Further, as described above, the CPU 11 notifies the user by displaying a frame line 82 in the display area 61 and blinking the frame line. The CPU 11 returns the process to the material display process of FIG.

  It is assumed that the CPU 11 receives new annotation data from the server 2 and stores it in the annotation table in S13 before detecting the “operation associated with the notification” by the user. For example, as shown in FIG. 3, the annotation data of the annotation 55 is received first, and the annotation data of the annotation 56 is received later. As shown in FIG. 6, in the process of S71, the CPU 11 advances the process to S73 because the undisplayed flag of the previous annotation data stored in the annotation table is ON (S71: YES). The CPU 11 obtains the distance difference between the position of the annotation area 56A of the annotation data based on the annotation 56 received this time and the position of the annotation area 55A of the annotation data received based on the previously undisplayed annotation 55 as described above. If the distance difference between the annotation area 56A and the annotation area 55A is, for example, more than a predetermined distance (S73: YES), the CPU 11 advances the process to S77. Similarly to the above, the CPU 11 performs notification processing and returns the processing to the material display processing of FIG.

  On the other hand, returning to FIG. 6, in S73, the distance difference between the annotation area 56A of the annotation data based on the annotation 56 received this time and the annotation area 56A of the annotation data based on the previously received annotation 55 is as shown in FIG. When it is within the predetermined distance (S73: NO), the CPU 11 advances the process to S75. The CPU 11 compares the update time of the annotation data based on the annotation 56 received this time with the update time of the annotation data based on the undisplayed annotation 55 received last time (S75). When the update time of the annotation data based on the annotation 56 received this time has passed a predetermined time based on the update time of the annotation data based on the previously received annotation 55 not received (S75: YES), the CPU 11 performs processing. Proceed to S77. Similarly to the above, the CPU 11 performs notification processing and returns the processing to the material display processing of FIG.

  Returning to FIG. 6, in S75, if the update time of the annotation data based on the annotation 56 received this time has not passed the predetermined time from the update time of the annotation data based on the previously received annotation 55 that is received (S75: NO). The CPU 11 returns the process to the material display process of FIG. As described above, the CPU 11 notifies the previously received annotation (the previously received annotation data), and for the later received annotation (the currently received annotation data), the distance between the annotation regions is a predetermined distance, If the update time does not elapse, a notification is not sent. This process is based on the fact that when the user browses the annotation based on the annotation data received last time, the annotation based on the annotation data received this time can be browsed simultaneously on the display of the annotation screen described later.

  As illustrated in FIG. 7, when the user touches the notification bar 81 with the finger 8 and detects a flick operation in which the user slides the finger 8 downward as it is, the CPU 11 determines that an “operation associated with the notification” has been performed. to decide. As shown in FIG. 4, when the operation associated with the notification is detected in S17 (S17: YES), the CPU 11 advances the process to S31.

  The CPU 11 displays in the display area 61 a display range 72 of the document 5 that is currently displayed (also referred to as “current screen” for convenience) and a display range 71 of the document 5 that can display the received annotations 55 and 56 ( For convenience, it is also referred to as “annotation screen”) (S31). Specifically, as shown in FIG. 8, the CPU 11 divides the display area 61 into two upper and lower areas. In the upper area 61A on the upper side, the display range 71 of the material 5 including the received annotations 55 and 56 is displayed. In the lower area 61B on the lower side, the display range 72 of the document 5 displayed so far is displayed. The display of the notification bar 81 and the frame line 82 (see FIG. 7) is deleted. In addition, the CPU 11 displays a position frame 72A indicating the position of the display range 72 displayed in the lower area 61B, overlaid on the material 5 displayed in the upper area 61A.

  The user performs a known tap operation on either the upper region 61A or the lower region 61B with the finger 8 (see FIG. 7). As shown in FIG. 4, the CPU 11 detects the coordinates of the position where the user's finger or the like touches the touch pad 17 in the user's tap operation (hereinafter referred to as “tap position coordinates”), and the current screen is displayed. If it is determined that the coordinates of the tap position are included in the lower area 61B (S33: NO), the display range 72 of the material 5 is displayed again on the entire display area 61 (S35). CPU11 advances a process to S41.

  On the other hand, when it is determined in S33 that the coordinates of the tap position are included in the upper area 61A on which the annotation screen is displayed (S33: YES), the CPU 11 displays information on the display range 72 of the document 5 that is the current screen. The storing process is performed (S37). That is, the CPU 11 stores the identification information of the material 5 and the coordinates of the four corner points of the display range 72 in the history table of the flash memory 14 as described above. The CPU 11 displays the display range 71 of the material 5 over the entire display area 61 (S39). The CPU 11 displays the annotations including the annotations 55 and 56 that are not displayed so as to be superimposed on the material 5 and are associated with the material 5 stored in the annotation table in a layered manner. The CPU 11 turns off the non-display flag associated with the annotation data of the annotations 55 and 56. CPU11 advances a process to S41.

  When the user performs a tap operation in the state where the entire document 5 is set to the display range 71 in S19 described above, the CPU 11 focuses on the position touched by the user's finger 8 by the tap operation. 5 is enlarged and displayed. When the tap operation is performed on the vicinity of the annotations 55 and 56 in a state where the display range 71 of the material 5 is displayed in the entire display area 61 by the process of S39 described above, the CPU 11 performs the operation as shown in FIG. Further, a display range 73 (see FIG. 2) in which the document 5 is enlarged and displayed around the vicinity of the annotations 55 and 56 is displayed in the display area 61. When the user performs a double-tap operation while the document 5 is displayed in an enlarged manner, the CPU 11 sets the entire document 5 in the display range 71 and displays it in the display area 61. Further, when the user performs a double tap operation, the CPU 11 reads information stored at the end of the history table and returns to the enlarged display of the document 5.

  By the way, when the user of the organizer terminal device provides new material as the conference proceeds, the computer of the organizer terminal device transmits the material data of the new material to the server 2. As shown in FIG. 5, when it is determined in the material change process that new material data is received based on the storage in the flash memory 14 (S51: YES), the CPU 11 follows up based on the storage in the flash memory 14. It is determined whether the mode is ON (S53). When the follow-up mode is OFF (S53: NO), the CPU 11 ends the material change process and returns the process to the material display process of FIG.

  Returning to FIG. 5, when the follow-up mode is ON in the process of S53 (S53: YES), the CPU 11 performs a process of storing information related to the display range (for example, display range 72) of the document 5 that is the current screen. (S55). That is, the CPU 11 stores the identification information of the material 5 and the coordinates of the four corner points of the display range 72 in the history table of the flash memory 14 as described above. The CPU 11 sets the entire material based on the newly received material data as a display range and displays it in the display area 61 (S57). The CPU 11 returns the process to the material display process of FIG. As described above, when the conference organizer changes the material displayed on the organizer terminal device to a new material, the computer of each terminal device displays the new material so that the conference is smoothly performed.

  As described above, the CPU 11 can notify the user of reception of a new annotation. When the user performs an operation associated with the notification, the CPU 11 can store information regarding the display range currently being displayed. Therefore, the CPU 11 can set the display range including the annotation in the display area 61 and return the original display range after the user browses the annotation. That is, after viewing the annotation, the user displays a display range equivalent to the original display range, so that without taking the trouble of performing a multi-step operation, based on the information about the display range stored in the history table, It is possible to easily browse the original display range again.

  In addition, since the display of the original display range and the display range including the annotation are displayed simultaneously on two screens, the user can select which display range to display, so that the annotation is immediately received when the annotation is received. It is possible to cancel the operation of browsing the document in the middle and browse the annotation later. In addition, even if the position and size of the display range are changed, the display range before the change can be stored, so that the user can easily perform an operation when the user wants to display the display range displayed in the past again. Can do. In addition, when the positions of a plurality of received annotations are close to each other, the annotations are likely to be an annotation group in which the adjacent annotations have a single meaning. If the CPU 11 does not notify when the annotations are close to each other, the user does not feel bothered because the notification is not made every time each annotation constituting such an annotation group is received. In addition, the CPU 11 receives a plurality of annotations in succession by adding a plurality of annotations to the material continuously in another terminal device or adding annotations to the material in a plurality of terminal devices at the same time. There is a case. Even in such a case, since the notification is not performed every time the annotation is received, the user does not feel bothered.

  In addition, this invention is not limited to the above-mentioned embodiment, A various change is possible. The CPU 11 displays the past display range stored in the history table in response to the flick operation. For example, a history display button is provided, and the past display range is selected from, for example, thumbnail images displayed in a tile shape. You may choose from a list display. What is displayed in the display area 61 is not only a document but also an image or video taken with a camera attached to a smartphone or the like. The server 2 may be omitted, and the terminal devices may be directly connected via the network 9 to share the material data stored in the respective storage devices. Further, the organizer terminal device need not be set.

  The CPU 11 notifies the reception of the annotation by the display of the notification bar 81 and the blinking of the frame 82. However, the present invention is not limited to this. You may go and notify. Or you may perform notification by means other than a screen display, such as an audio | voice output, a drive of a vibrator, and blinking of LED.

  In the process of S31, the CPU 11 displayed the current screen and the annotation screen using the upper and lower two screens, but the left and right two screens may be displayed. In addition to the two-screen display, one screen may be translucently displayed on one screen, and both screens may be toggled to be selected by a flick operation, and may be selected by a tap operation.

  In S75, the CPU 11 determines whether or not the update time of the annotation data received this time has passed a predetermined time with reference to the update time of the annotation data received last time, but is not limited to the update time. The reception time may be determined. In this case, when receiving the annotation data, the CPU 11 may store the annotation data in the annotation table in association with the annotation data and the annotation data in association with the reception flag, the non-display flag, and the reception time. The CPU 11 may use, for example, the time acquired when the annotation is received from a timer mounted as a standard function by the OS as the reception time. In S75, the CPU 11 may determine whether or not the reception time of the annotation data based on the currently received annotation has passed a predetermined time from the reception time of the annotation data based on the previously received undisplayed annotation.

  The process of S9 for displaying the material on the computer (CPU 11 or the like) corresponds to the “first display step” of the present invention. The process of S13 that causes the computer to receive the annotation data and store it in the storage device corresponds to the “reception step” of the present invention. The process of S67 that causes the computer to determine whether or not the display area of the received annotation is included within the display range being displayed corresponds to the “first determination step” of the present invention. The process of S77 that causes the computer to notify receipt of the annotation data corresponds to the “notification step” of the present invention. The process of S17 that causes the computer to determine whether or not the operation associated with the notification has been performed by the user corresponds to the “second determination step” of the present invention. The process of S37 that causes the computer to store information related to the currently displayed display range in the storage device (flash memory 14 or the like) corresponds to the “first storage step” of the present invention. The process of S39 for displaying the display range including the annotation on the computer corresponds to the “second display step” of the present invention.

  The process of S21 that causes the computer to determine whether or not the operation associated with the notification is an operation corresponding to the re-display of the original display range (an operation that goes back in the history) is the “third determination step” of the present invention. Is equivalent to. The process of S27 that causes the computer to store information on the display range including the annotation in the storage device corresponds to the “second storage step” of the present invention. The process of S29 for causing the computer to display the original display range stored in the storage device again corresponds to the “third display step” of the present invention. The process of S31 for causing the computer to display two display ranges, the display range currently displayed and the display range including the annotation, corresponds to the “fourth display step” of the present invention. The process of S33 that causes the computer to determine which of the two display ranges has been operated corresponds to the “fourth determination step” of the present invention. The process of S19 that causes the computer to determine whether or not an operation corresponding to the change of the display range has been performed corresponds to the “fifth determination step” of the present invention. The process of S23 that causes the computer to store information related to the display range currently being displayed in the storage device corresponds to the “third storage step” of the present invention. The process of S25 for causing the computer to display the changed display range corresponds to the “fifth display step” of the present invention. The process of S73 that causes the computer to determine whether the distance between the annotation regions is a predetermined distance corresponds to the “sixth determination step” of the present invention. The update time corresponds to “additional time”. The processing of S75 that causes the computer to determine whether or not the update time of the current annotation has passed a predetermined time from the previous time corresponds to the “seventh determination step” of the present invention.

1 Smartphone 2 Server 3 Tablet Terminal 5 Document 9 Network 11 CPU
14 Flash memory 16 Display 41 Monitor 55 Annotation 56 Annotation 71 Display range 72 Display range 73 Display range 81 Notification bar 82 Border

Claims (8)

A program executable by a computer of the terminal device that transmits and receives various data between a plurality of terminal devices connected via a network,
In the computer,
A first display step of displaying a display range indicating at least a part of the material based on material data indicating material shared between the plurality of terminal devices on a display unit of the terminal device;
A receiving step of receiving annotation data indicating the annotation added to the material in another terminal device;
A first determination step of determining whether or not the position of the annotation based on the annotation data is included in the display range;
When it is determined in the first determination step that the position of the annotation is not included in the display range, a notification step of outputting a notification signal indicating that the annotation data has been received in the reception step;
A second determination step of determining whether or not the operation information acquired from the operation unit that receives an operation input by the user is operation information indicating an operation corresponding to the notification signal;
When it is determined in the second determination step that the operation information indicates an operation corresponding to the notification signal, the current display range of the material is stored in a storage device included in the terminal device as a first display range. A memory step;
A second display step of setting the position where the annotation based on the annotation data is included in the new display range as a second display range, and displaying on the display unit;
A document sharing program characterized in that In the computer,
A third determination step of determining whether or not the operation information is operation information indicating an operation corresponding to the re-display of the first display range stored in the first storage step;
A second storage step of storing the second display range in the storage device when it is determined in the third determination step that the operation information indicates an operation corresponding to redisplay of the first display range;
After the second display range is stored in the storage device in the second storage step, the first display range is set to the display range again and displayed on the display unit;
The material sharing program according to claim 1, wherein: In the computer,
A fourth display step of displaying the first display range and the second display range on the display unit when it is determined in the second determination step that the operation information indicates an operation corresponding to the notification signal; ,
A fourth determination step for determining whether the operation information is operation information indicating an operation corresponding to the second display range displayed in the fourth display step;
Is executed further,
When it is determined in the fourth determining step that the operation information is an operation corresponding to the display of the second display range,
The first storage step stores the first display range in the storage device;
The material sharing program according to claim 1 or 2, wherein the second display step sets the second display range as the display range and displays the second display range on the display unit. In the computer,
A fifth determination step of determining whether the operation information is operation information indicating a change in at least one of a position and a size of the display range in the material;
A third storage step for storing the current display range of the material in the storage device as a third display range when the operation information is determined to indicate the change of the display range in the fifth determination step;
A fifth display step of setting the range after the change of the display range as a new display range as a fourth display range and displaying it on the display unit;
The material sharing program according to any one of claims 1 to 3, wherein the program is further executed. In the computer,
When it is determined in the first determination step that the position of the annotation is not included in the display range, the position of the annotation based on the annotation data is predetermined with respect to the position of another annotation different from the annotation. A sixth determination step for determining whether or not the distance is away is further executed,
The notification step does not output the notification signal when it is determined in the sixth determination step that the position of the annotation is not separated from the position of the other annotation by a predetermined distance. Item 5. A document sharing program according to any one of Items 1 to 4. The annotation data includes additional time data indicating the time when the annotation is added to the material in another terminal device,
In the computer,
A seventh determination step of determining whether or not the addition time of the annotation data received this time in the reception step has passed a predetermined time from the addition time of the annotation data received last time;
In the notification step, when it is determined in the seventh determination step that the addition time of the annotation data received this time has not passed a predetermined time from the addition time of the annotation data received last time, 6. The material sharing program according to claim 1, wherein the notification signal is not output. A terminal device that transmits and receives various data between a plurality of terminal devices connected via a network,
First display means for displaying a display range indicating at least part of the material based on material data indicating material shared between the plurality of terminal devices on a display unit of the terminal device;
Receiving means for receiving annotation data indicating the annotation added to the material in another terminal device;
First determination means for determining whether or not the position of the annotation based on the annotation data is included in the display range;
A notification means for outputting a notification signal indicating that the reception means has received the annotation data when the first determination means determines that the position of the annotation is not included in the display range;
Second determination means for determining whether operation information acquired from an operation unit that receives an input of an operation by a user is operation information indicating an operation corresponding to the notification signal;
When the second determination means determines that the operation information indicates an operation corresponding to the notification signal, the second display means stores the current display range of the material as a first display range in a storage device included in the terminal device. A memory means;
A second display means for setting a position where the annotation based on the annotation data is included in the new display range as a second display range, and displaying on the display unit;
A terminal device comprising: A material sharing method executable by a computer of the terminal device for transmitting and receiving various data between a plurality of terminal devices connected via a network,
A first display step of displaying a display range indicating at least a part of the material based on material data indicating material shared between the plurality of terminal devices on a display unit of the terminal device;
A receiving step of receiving annotation data indicating the annotation added to the material in another terminal device;
A first determination step of determining whether or not the position of the annotation based on the annotation data is included in the display range;
When it is determined in the first determination step that the position of the annotation is not included in the display range, a notification step of outputting a notification signal indicating that the annotation data has been received in the reception step;
A second determination step of determining whether or not the operation information acquired from the operation unit that receives an operation input by the user is operation information indicating an operation corresponding to the notification signal;
When it is determined in the second determination step that the operation information indicates an operation corresponding to the notification signal, the current display range of the material is stored in a storage device included in the terminal device as a first display range. A memory step;
A second display step of setting the position where the annotation based on the annotation data is included in the new display range as a second display range, and displaying on the display unit;
A material sharing method characterized by including:

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