JP6018595B2 - Display control device, operation method of display control device, and computer program - Google Patents

Description

  The present invention suppresses operations that are not reflected in the operation result when the same content is displayed on a plurality of screens and the operation result is reflected on all screens when the operation is performed on any screen. It is related to the technology.

  Conventionally, a technique is known in which the same content is displayed on a plurality of screens, and if an operation is performed on any of the screens, the operation result is reflected on all the screens.

Toshiaki Kamikata, Takahiro Hara, Masahiko Tsukamoto, Hiroaki Kanno, Akihiro Nishio "Access Control Mechanism for Simultaneous Use of Multiple Users in Remote Display Environments" IPSJ Journal Vol.43 No. 2 Feb. 2002

  As shown in FIG. 6 (a), the terminals 4 and 5 display a content called synchronization content 110 whose display contents can be changed, and the user of the terminal 4 inputs “live” in the text input area 11A. When the search button 11B is operated, the search results corresponding to “live” are displayed in the screen areas 111 of the terminals 4 and 5. Making the display content of each screen the same in this way is called “synchronization”.

  However, as shown in FIG. 6B, the terminal 4 user inputs “live” in the text input area 11A, the terminal 5 user inputs “movie” in the text input area 11A, and the terminal 5 user When the search button 11B is operated first, the search results corresponding to “movie” are displayed in the screen areas 111 of the terminals 4 and 5 as shown in FIG.

  That is, the user of the terminal 4 loses the convenience of the “live” input operation by himself / herself.

  The present invention has been made in view of the above-described problems.When the same content is displayed on a plurality of screens and an operation is performed on any screen, the operation result is reflected on all screens. An object is to suppress an operation that is not reflected in the operation result.

In order to solve the above problems, a first aspect of the present invention is a display control apparatus connected to a plurality of terminals via a communication line, and has a record for each terminal, and the record is stored in the corresponding terminal. When the exclusive operation right is granted, the exclusive operation right management unit includes a flag that is set to a valid value when it is not granted, and an invalid value when the exclusive operation right is not granted. The exclusive operation right management unit reflects the operation on the terminal corresponding to the record including the flag set to the valid value in the content of the terminal, while the exclusive operation right management unit sets the invalid value. The operation on the terminal corresponding to the record including the flag is invalidated.

A second aspect of the present invention is an operation method of a display control apparatus connected to a plurality of terminals via a communication line, wherein the display control apparatus has a record for each terminal, and the record is stored in the corresponding terminal. Exclusive operation right is attached
An exclusive operation right management unit including a flag set to a valid value when given, and an invalid value when not given, and the operation method transmits the same content to each terminal Display and reflect the operation on the terminal corresponding to the record including the flag set to the valid value in the exclusive operation right management unit to the content of the terminal, while setting the invalid value in the exclusive operation right management unit The operation on the terminal corresponding to the record including the flag is invalidated.

  According to the present invention, if the same content is displayed on a plurality of screens and an operation is performed on any of the screens, an operation that is not reflected in the operation results is performed when the operation results are reflected on all the screens. Can be suppressed.

It is a figure which shows an example of a structure of the display control system which concerns on this Embodiment. 3 is a diagram illustrating an example of an exclusive operation right management unit configured in the display control device 1. FIG. FIG. 3 is a diagram illustrating an example of HTML data 100 that the display control device 1 receives from a web server 2. It is a figure which shows an example of transition of the screen display content in each terminal. It is a flowchart which shows operation | movement of the display control apparatus 1 when event information is received. It is a figure which shows the subject in a prior art.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a configuration of a display control system according to the present embodiment.

  In the display control system, for example, the display control device 1 is connected to the web server 2 and the terminals 4 and 5 via a communication line. Each terminal 4 and 5 has a browser capable of WebSocket communication, for example.

  The web server 2 holds content. Content refers to a set of data composed of information technology technologies such as HTML data, JavaScript (registered trademark), and CSS (Cascading Style Sheets).

  FIG. 2 is a diagram illustrating an example of the exclusive operation right management unit configured in the display control apparatus 1.

  The exclusive operation right management unit is configured in the display control device 1 by, for example, JavaScript in the content received by the display control device 1 from the web server 2.

  The exclusive operation right management unit has a record for each terminal, and the record is a terminal ID indicating the corresponding terminal, and if the exclusive operation right is granted to the terminal, a valid value (for example, 1) indicating that is given If not, a flag set to an invalid value (for example, 0) indicating that is included. That is, the terminal corresponding to the terminal ID in the record including the valid value has the exclusive operation right. Each flag is initially set to an invalid value. That is, at the beginning, none of the terminals has an exclusive operation right.

  FIG. 3 is a diagram illustrating an example of the HTML data 100 that the display control device 1 receives from the web server 2.

  The display control device 1 receives content from the web server 2. Here, the HTML data 100 of the received content is the operation used when invalidating the operation of the synchronization content 110 and the terminals 4 and 6 used when the screens of the terminals 4 and 5 are synchronously displayed. The invalid content 120 is included.

  The synchronization content 110 includes a screen area 111 in which search results are displayed, a text input area 11A in which search terms are input, and a search button 11B that is operated during the search.

  The operation disabling content 120 includes a screen area 121 in which search results are displayed, a text input area 12A in which search terms are input, and a search button 12B. These are so-called dummies and do not perform their original functions.

  FIG. 4 is a diagram illustrating an example of the transition of the screen display content in each terminal 4 and 5.

  For example, when receiving the content, the display control device 1 transmits the synchronization content 110 included in the HTML data 100 of the content to the terminals 4 and 5. The transmission destination of the synchronization content 110 is designated in advance in the synchronization content 110.

  As shown in FIG. 4A, when each of the terminals 4 and 5 receives the synchronization content 110, the received synchronization content 110 is displayed on the screen by the browser. Hereinafter, description that the display is based on the browser is omitted.

  As shown in FIG. 4B, for example, while the cursor is in the text input area 11A, the terminal 4 displays the terminal ID indicating the terminal 4 that has performed this operation and the text input area 11A that is the target of the operation. Event information including update information such as the target ID to be displayed and characters input in the text input area 11A is repeatedly transmitted to the display control device 1.

  The target ID is included, for example, as an ID indicating an element in which the operation occurs in HTML data. As a specific example, there is a method in which an attribute value of the element in HTML data is used as a target ID.

  Similarly, while the cursor is in the text input area 11A, other terminals also display event information including the terminal ID of the terminal where the operation has been performed, the target ID indicating the target of the operation, and update information. Send to repeatedly.

  In the text input area 11A, the operation, that is, the text input does not end instantaneously like a button operation, and a relatively long time is required. Therefore, event information is repeatedly transmitted for such an operation target. On the other hand, event information about an operation target that ends operation instantaneously like a button is transmitted only at the time of operation.

  FIG. 5 is a flowchart showing the operation of the display control apparatus 1 when event information is received. This operation is executed, for example, by JavaScript in the content received by the display control device 1 from the web server 2.

  When receiving the event information, the display control device 1 determines whether there is a record including a flag set to a valid value in the exclusive operation right management unit (S1).

  If there is no record including a flag that is set to a valid value in the exclusive operation right management unit (S1: NO), the display control device 1 is operated instantaneously as if the target ID in the event information is the text input area 11A. It is determined whether or not it is the same as that indicating an operation target that does not end with (hereinafter referred to as “target target ID”) (S3). The target target ID is set in advance in, for example, HTML data, and collated with the target ID in the event information.

  If the target ID in the event information is the same as the target target ID (S3: YES), the display control device 1 retrieves the terminal ID from the event information, searches the exclusive operation right management unit for a record including the terminal ID, The record flag is changed to a valid value (S5).

  Next, the display control device 1 searches the exclusive operation right management unit for a record including a flag set to an invalid value, and transmits the operation invalid content 120 to the terminal corresponding to the terminal ID in the record. (S7). At this time, in the text input area 12A, as an indication that the operation on the screen of the terminal that is the destination of the operation invalid content 120 is invalid, “other user is inputting”, “operation is invalid” Characters such as may be set.

  If there is a record including a flag set to a valid value in the exclusive operation right management unit (S1: YES), the display control device 1 is a terminal corresponding to the terminal ID in the record (terminal having the exclusive operation right). Is reflected, or when the processing of step S7 is completed, the operation at the terminal (terminal having exclusive operation right) corresponding to the terminal ID in the record changed in the setting at the latest step S5 is reflected. Thus, the setting of the synchronization content 110 is changed (S9). For example, when a character is added to the text input area 11A, the character is added to the synchronization content 110 by the update information in the event information.

  Next, the display control apparatus 1 transmits the synchronization content 110 to the terminal (the terminal having the exclusive operation right) (S11), and ends the process.

  On the other hand, if the target ID in the event information is not the target target ID (S3: NO), the display control device 1 changes the setting of the synchronization content 110 so that the operation on the terminal is reflected (S13). For example, when the search button 11B is operated, the setting of the synchronization content 110 is changed so that the search result is displayed in the screen area 111 of the synchronization content 110.

  Next, the display control apparatus 1 transmits the synchronization content 110 to all terminals (S15), and ends the process.

  FIG. 4C shows a case where the terminal 4 is ahead of the terminal 5 when the cursor is moved to the text input area 11A. In this case, the terminal 4 has the exclusive operation right. In the terminal 4, the input operation to the text input area 11A is continuously performed.

  While the terminal 4 has the exclusive operation right, the terminal 4 receives the synchronization content 110 and displays the received synchronization content 110 on the screen. For example, an additional character (“live”) is displayed in the text input area 11A.

  On the other hand, since the terminal 5 does not have the exclusive operation right, the terminal 5 receives the operation invalid content 120. The terminal 5 displays the received operation invalid content 120 on the screen. In the text input area 12A, characters such as “other user is inputting” are displayed. However, the text input area 12A does not have an original function and cannot input characters. Therefore, the terminal 5 does not transmit event information. The same applies to the search button 12B.

  Thus, since the terminal 4 has the exclusive operation right, the character input to the text input area 11A is not wasted, and there is no need to rush the operation of the search button 11B.

  As shown in FIG. 4D, when the search button 11B is operated, for example, a search result corresponding to “live” is displayed in the screen area 111 of the terminal 4.

  Also, as shown in FIG. 4 (e), if a predetermined time has elapsed since the flag became an effective value, or because, for example, a condition such as detecting an event of pressing the search button is satisfied. The synchronization content 110 is transmitted. The terminal 5 receives the synchronization content 110 and displays it on the screen. In the screen area 111, for example, a search result by the terminal 4 (search result corresponding to “live”) is displayed. Thereafter, the terminal 5 transmits event information to the display control device 1 in operation.

(Modification)
In the above-described embodiment, the character input to the text input area is taken as an example of the operation that does not end instantaneously. Other examples of such an operation include inputting a voice and operating a slider. .

  In the above embodiment, an example in which a search result is displayed as a result of the operation has been described. However, the result of the operation is not limited to this, and for example, a predetermined application that outputs audio or video is activated. Anything is acceptable.

  Moreover, although the case where two users respectively use the terminals 4 and 5 has been described in the above embodiment, the number of terminals may be three or more. In addition, each user may share one terminal (for example, a large television), and the screen of the terminal may be divided so that each divided screen becomes the screen of each of the terminals 4 and 5 in the above embodiment.

  In addition, in some cases, a character such as “other user is inputting” may not be included in the operation invalidation content, and may be displayed by separately transmitted information.

  Moreover, in the said Example, although the display control apparatus 1 was provided separately from the terminal, the operation | movement of the display control apparatus 1 is made to be any terminal, and the display control apparatus 1 does not need to be provided separately.

  As described above, according to the present embodiment, while the first operation on the first screen (in the example, the operation of moving the cursor to the text input area 11A and the input operation on the terminal 4) is performed. In addition, if a second operation on the second screen (in the embodiment, an operation for moving the cursor to the text input area 11A and an input operation on the terminal 5) is performed, the first operation is performed on the first screen. Since it is reflected (S11) and the second operation is invalidated (S7), the first operation does not end halfway, so that the operation can be reflected in the operation result. That is, it is possible to suppress an operation that is not reflected in the operation result.

  For example, the first operation in disabling the second operation is an operation predetermined as an operation that does not end instantaneously.

  When the second operation is invalidated (S7), a display indicating that the operation on the second screen is invalid (in the example, “other user is inputting” or the like) is performed on the second screen. Therefore, it is possible to prevent an invalid operation, that is, a wasteful operation. Note that “other user is inputting” is an example, and for example, a symbol indicating that the operation is invalid may be displayed.

  A computer program for causing the display control device to execute the operation method of the display control device according to the present embodiment, that is, a computer program for causing the computer to function as the display control device includes a semiconductor memory, a magnetic disk, an optical disc, It can be recorded on a computer-readable recording medium such as a magneto-optical disk or a magnetic tape, and can be widely distributed by being transmitted via a communication network such as the Internet.

DESCRIPTION OF SYMBOLS 1 ... Display control apparatus 2 ... Web server 4, 5 ... Terminal 100 ... HTML data 110 ... Content for synchronization 111, 121 ... Screen area 11A, 12A ... Text input area 11B, 12B ... Search button 120 ... Content for operation invalidity

Claims (5)

A display control apparatus connected to a plurality of terminals via a communication line,
A record for each terminal, and the record includes a flag that is set to a valid value when the exclusive operation right is granted to the terminal, and an invalid value when the record is not granted. Part
Send and display the same content to each terminal,
While the exclusive operation right management unit reflects the operation on the terminal corresponding to the record including the flag set to the valid value in the content of the terminal, the exclusive operation right management unit sets the invalid value to the invalid value A display control device characterized by invalidating an operation at a terminal corresponding to a record including a character string.   When invalidating the operation on the terminal, the operation invalidation content is transmitted to the terminal and displayed.
  The display control apparatus according to claim 1.   When a flag in any record of the exclusive operation right management unit is changed from an invalid value to a valid value, the terminal corresponding to the record including the flag set to the invalid value in the exclusive operation right management unit Send and display invalid content for operations
  The display control apparatus according to claim 1, wherein the display control apparatus is a display control apparatus. An operation method of a display control apparatus connected to a plurality of terminals via a communication line,
The display control device includes:
A record for each terminal, and the record includes a flag that is set to a valid value when the exclusive operation right is granted to the terminal, and an invalid value when the record is not granted. Part
The operation method is as follows:
Send and display the same content to each terminal,
While the exclusive operation right management unit reflects the operation on the terminal corresponding to the record including the flag set to the valid value in the content of the terminal, the exclusive operation right management unit sets the invalid value to the invalid value An operation method of a display control device, characterized by invalidating an operation at a terminal corresponding to a record including . A computer program for causing the display control apparatus to execute an operation method of a display control apparatus connected to a plurality of terminals via a communication line,
A record for each terminal, and the record includes a flag that is set to a valid value when the exclusive operation right is granted to the terminal, and an invalid value when the record is not granted. Part
Sending and displaying the same content on each terminal;
While the exclusive operation right management unit reflects the operation on the terminal corresponding to the record including the flag set to the valid value in the content of the terminal, the exclusive operation right management unit sets the invalid value to the invalid value Disabling operations on devices that support records that contain
The computer program characterized by executing the display control device.

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