JP2019124817A - Display device, display control system, display control method, and program - Google Patents

Abstract

To provide a display device capable of performing detailed display control.SOLUTION: A display device (100) comprises: an image data generation unit (162) for generating image data (153) for an own device to be displayed on a display unit (130) of the own device and image data (154) for an external display apparatus to be displayed on the external display apparatus (200) connected with the own device; and an image data output unit (163) for displaying image data for the own device and image data for the external display apparatus on respective object devices. The image data for the external display apparatus is image data in which at least part of an area of the image data for the own device is made difficult to read.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device and the like capable of displaying learning materials and the like for learning on an external display device.

  A display device capable of displaying content information on an external display device arranged outside the device itself is known as a prior art. In such a display device, there is also known a technique for displaying processed content information on an external display device. For example, in Patent Document 1, information on the state of the transmitting side is added and a message is transmitted to the receiving side, or when the receiving side receives a message, a restricted message is output based on the state of the receiving side. Message communication system is disclosed. Patent Literature 2 discloses a class support system which prohibits the display of the text on the student terminal when the text display mode for displaying only the text of the textbook is selected on the electronic blackboard.

Patent No. 5893 049 (released on March 4, 2016) Unexamined-Japanese-Patent No. 2012-203154 (October 22, 2012 publication)

  However, the above-described conventional techniques can not perform detailed display control such as processing and displaying only a portion intended by the user in the content information. For example, according to the invention described in Patent Document 1, when the teacher causes the external display device such as the electronic blackboard to display a message with a restriction using the display device and displays the message to a plurality of students, the display device side You can not specify the range to be limited by. Also in the invention described in Patent Document 2, the same page of the textbook is displayed on the electronic blackboard and the student terminal, and only a part of the page can not be displayed or not displayed.

  One aspect of the present invention is made in view of the above problems, and it is an object of the present invention to provide a display device capable of detailed display control.

  In order to solve the above problems, a display device according to an aspect of the present invention is a display device capable of displaying content information on an external display device connected to the own device, and the display device is a device of the own device. An image data generation unit for generating image data for the own device to be displayed on the display unit and image data for the external display device to be displayed on the external display device, each of the image data for the device and the image data for the external display device An image data output unit to be displayed on a target device, wherein the image data for the external display device is image data in which at least a part of the image data for the own device is difficult to read .

  A display control method according to an aspect of the present invention is a display control method of a display device capable of displaying content information on an external display device connected to the own device, and an image for the own device to be displayed on a display unit of the own device. Image data generating step of generating data and image data for external display device to be displayed on the external display device, and image data output for displaying the image data for own device and the image data for external display device on a target device The image data for the external display device is a method in which at least a part of the image data for the own apparatus is difficult to read.

  According to one embodiment of the present invention, it is possible to provide a display device or the like which can perform detailed display control.

It is a block diagram showing an example of the principal part composition of the display control system concerning Embodiment 1 of the present invention. It is a schematic diagram which shows the outline | summary of the display control in the display control system which concerns on Embodiment 1 of this invention, (a) shows the example which made the preview area the black-painted area, (b) shows the jump destination preview area black-painted. An example of the area is shown. The display control system which concerns on Embodiment 1 of this invention WHEREIN: A display apparatus is a schematic diagram which shows the outline | summary which performs display control of the apparatus for students. It is a flowchart which shows an example of the process which the display apparatus which concerns on Embodiment 1 of this invention performs. It is a flowchart which shows an example of the process which the display apparatus which concerns on Embodiment 2 of this invention performs. It is a schematic diagram which shows the outline | summary of the display control in the display control system which concerns on Embodiment 3 of this invention, (a) shows the state in which the image data is synchronized and displayed between the display apparatus and the external display apparatus. (B) shows a state in which updating of the display content on the external display device is stopped. It is a schematic diagram which shows the outline | summary of the display control in the display control system which concerns on Embodiment 3 of this invention, (a) shows the state which stopped the update of the display content in an external display apparatus, (b) shows a display apparatus and the exterior It shows a state in which image data is displayed in synchronization with the display device. It is a schematic diagram which shows the outline | summary of the display control in the display control system which concerns on Embodiment 3 of this invention, (a) shows the case where update of the display content in an external display apparatus is stopped, and a black area is cancelled | released b) shows the case where the update of the display content of the external display device is resumed after (a). It is a flowchart which shows an example of the process which the display apparatus which concerns on Embodiment 3 of this invention performs.

Embodiment 1
Embodiment 1 of the present invention will be described in detail with reference to FIGS. 1 to 4.

(Configuration of display control system)
The configuration of the display control system 1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing an example of the main configuration of the display control system 1. In the illustrated example, the display control system 1 includes a display device 100, an external display device 200, and three student devices 300a to 300c.

  The display control system 1 is a system that causes the external display device 200 and the student devices 300 a to 300 c to display image data using the display device 100. At this time, in the display device 100, the image data to be displayed on the external display device 200 by the display device 100 may be image data in which at least a part of the region is difficult to read.

(Configuration of display device)
The display device 100 is a device for displaying content information, and is connected to each of the external display device 200 and the student devices 300a to 300c. Here, the display device 100 is a device used by a teacher in, for example, a classroom, and the content information preferably includes information of a learning material. The display device 100 includes a connection unit 110, a communication unit 120, a display unit 130, an input unit 140, a storage unit 150, and a control unit 160. The storage unit 150 includes content information 151, black area information 152, image data for own device 153, image data for external display device 154, and input history 155. The control unit 160 includes a black area setting unit 161, an image data generation unit 162, an image data output unit 163, and an input content synchronization unit 164.

  The display device 100 can cause the external display device 200 connected to the display device 100 to display content information. For example, the display device 100 displays the image data generated by an arbitrary application as it is on its own device, and the external display device 200 displays another image data in which a partial area of the image data is blacked out in an difficult-to-understand manner Let In the black area, the content information included in the black area may be difficult to read. The area that is made difficult to read by blacking (hereinafter referred to as a hard-to-read area) may be a blacked area in which the area is blacked, or a specific color or pattern other than black is superimposed. Alternatively, another image may be superimposed. For example, the blackened area may be completely indistinguishable when viewed from a distance, but may be readable when viewed closely. In the following description, it is assumed that a black area is set as the hard-to-read area.

  The connection unit 110 is an interface that connects the display device 100 and the external display device 200. The connection unit 110 is, for example, an input / output port such as USB (Universal Serial Bus) or HDMI (High Definition Multimedia Interface: registered trademark).

  The communication unit 120 is an interface for transmitting and receiving data between the display device 100 and the student devices 300a to 300c. The communication unit 120 transmits and receives data using, for example, a wired LAN (Local Area Network), a wireless LAN, and Bluetooth (registered trademark).

  The display unit 130 is a display that displays the image data 153 for the own apparatus.

  The input unit 140 is an interface for the user to issue various instructions to the display device 100. The input unit 140 may be provided, for example, as a touch panel integrally formed with the display unit 130, or may be provided by a button, a mouse, or the like independent of the display unit 130. The display device 100 can set and cancel the black area in accordance with the user input to the input unit 140. Further, the input to the input unit 140 may be performed by the user's finger, or may be performed using a tool such as a touch pen.

  The storage unit 150 stores various information handled by the display unit 130. The storage unit 150 may have any configuration as long as it can store various types of information. For example, the storage unit 150 may be a combination of a plurality of hardware. Specifically, since the content information 151, the blackened area information 152, and the input history 155 are expected to be stored for a long time, it is preferable that the content information 151, the blackened area information 152, and the input history 155 be stored in a hard disk or non-volatile memory. On the other hand, since the image data for own device 153 and the image data for external display device 154 are considered to have a high update frequency, they may be stored in a display-only RAM (Random Access Memory) that can read and write data at high speed. It is suitable. The content information 151 includes the actual content information that the display device 100 handles. The content information 151 may include an application body such as an electronic dictionary application, and a database such as dictionary data used in the electronic dictionary application. Here, dictionary data may use a registered word / phrase as a keyword, and manage detailed contents related to the word / phrase as detailed information of the keyword.

  The blackened area information 152 is information set and updated by the blackened area setting unit 161. Specifically, the black area information 152 is set for each image data when the content information 151 is displayed on the display unit 130 and the external display device 200 as the image data 153 for the own device and the image data 154 for the external display device. Information on the identification information and the black area. The black area is set according to, for example, the type and content of the content information 151 included in the external display device-oriented image data 154, and the content information within the range of the black area can be made difficult to read. The identification information is information for distinguishing the area in the own-apparatus image data 153 corresponding to the black area in the external display apparatus-directed image data 154 from the other area in the own apparatus-directed image data 153. . The identification information is different from the black area, and the content information within the range indicated by the identification information is readable. A specific example of the identification information will be described later with reference to FIG.

  For example, when the image data for the external display device includes the screen of the electronic dictionary application, the blackened area information 152 is set for at least a part of the detailed information of the keyword managed by the dictionary data. Furthermore, the blackened area information 152 may include information for not setting the blackened area according to the content of the content information 151. For example, in the case of displaying the content that the user has all rights, such as dictionary data additionally registered by the user, the blackened area may not be set.

  The image data for own device 153 is image data generated by the image data generation unit 162 and displayed on the display unit 130 by the image data output unit 163. The image data 153 for own apparatus is image data in which identification information is set based on the blackened area information 152, and includes, for example, all contents of the content information 151 selected according to the user input to the input unit 140. The self-device directed image data 153 may include a keyword area including at least one keyword, and a detailed information area including detailed information of the keyword.

  The external display device oriented image data 154 is image data generated by the image data generation unit 162 and displayed on the external display device 200 by the image data output unit 163 via the connection unit 110. The image data for external display device 154 is image data in which a blackened area is set based on the blackened area information 152. That is, the external display device-oriented image data 154 is image data in which the content of the content information to be originally displayed in the black area is masked, for example, in an illegible manner. The image data for external display device 154 may include a keyword area and a detailed information area as well as the image data 153 for own apparatus.

  The input history 155 is history information of user input using the input unit 140. The input history 155 is stored by the control unit 160 for each user input, but may be stored in association with a specific event such as activation or termination of an application, for example.

  The control unit 160 generally controls each part of the display device 100. The control unit 160 transmits and receives data between the display device 100 and the external display device 200 and the student devices 300 a to 300 c according to a user input to the input unit 140.

  The black area setting unit 161 functions as an area setting unit that sets and cancels a black area as a difficult-to-read area. More specifically, the blackened area setting unit 161 updates the blackened area information 152 in accordance with a user input to the input unit 140. Then, the identification information and the blackened area are set and released according to the contents of the blackened area information 152 updated by the blackened area setting unit 161.

  The image data generation unit 162 generates image data for its own device displayed on the display unit 130 and image data for external display device displayed on the external display device 200. The image data generation unit 162 stores the generated image data for the own device and the image data for the external display device in the image data 153 for the own device and the image data 154 for the external display device. The image data generation unit 162 generates, based on the content information 151 and the black area information 152, the image data 153 for the own apparatus in which the identification information is set. Further, when the image data generation unit 162 detects an update trigger for updating the external display device image data 154, the identification information is a black area based on the image data 153 for itself and the black area information 152. The superimposed image data 154 for the external display device is generated. Here, the update trigger may be any type, for example, the presence or absence of a change in the image data 153 for the apparatus, the pressing of a specific button, and the elapse of a predetermined time.

  The image data output unit 163 causes the display unit 130 to display the image data for the own apparatus acquired from the image data 153 for the own apparatus. The image data output unit 163 transmits the image data for external display device acquired from the image data for external display device 154 to the external display device 200 via the connection unit 110 and causes the display device 200 to display the image data. That is, the image data output unit 163 can display the image data 153 for the own device and the image data 154 for the external display device on the target device.

  The input content synchronization unit 164 acquires history information of user input made to the display device 100 during a predetermined period from the input history 155, and transmits the history information to the student devices 300a to 300c via the communication unit 120. Do. Details of the input content synchronization unit 164 will be described in the second embodiment.

  The external display device 200 is, for example, a liquid crystal monitor or a projector that can be connected to the display device 100 and can display the image data 154 for the external display device. In the illustrated example, the connection between the external display device 200 and the display device 100 is performed by the connection unit 110, but, for example, similarly to the student devices 300a to 300c, communication is performed using the communication unit 120. May be

  The student devices 300a to 300c are devices that can communicate with the display device 100 via the communication unit 120, and are, for example, tablet terminals used by students in a classroom during class. That is, the student devices 300 a to 300 c are second external display devices different from the external display device 200. The student devices 300a to 300c can receive image data from the display device 100, and can display the received image data on a display unit (not shown) included in the device. In the present embodiment, the student devices 300a to 300c may be configured to be able to communicate with the display device 100. For example, the display device 100 and the student devices 300a to 300c may be devices of different types.

(Specific example of display control)
A specific example in which the display device 100 performs display control on the external display device 200 in the display control system 1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a schematic view showing an outline of display control in the display control system 1. FIG. 2A shows an example in which the preview area is a black area, and FIG. 2B shows a jump destination preview area in the black area. An example is shown. In the following description, it is assumed that the connection between the display device 100 and the external display device 200 has already been established.

  (A) of FIG. 2 shows the display contents of the display unit 130 and the external display device 200 when the display device 100 is displaying the batch search screen of the electronic dictionary application. In the illustrated example, the collective search screen is configured of a search term input field, a search area including a list of terms that are search results, and a preview area that displays details of the selected term. In the external display device 200, the preview area is set to a black area, and the contents of the preview area are difficult to read. On the other hand, in the display unit 130, semi-transparent hatching is attached as identification information so that the preview area is recognized as a black area on the external display device 200. Note that, as shown in the figure, a notification message of “display restricted” is attached to the black area and the identification information in order to notify that the external display device 200 sets the area as a black area. It is also good. Further, the identification information need not be limited to semi-transparent hatching, and may be, for example, a red border surrounding an area corresponding to a black area, or a specific pattern (check pattern or the like) A stripe pattern etc. may be applied. Here, the color of the frame may be other than red. Also, the specific pattern is preferably, for example, a light color, and is preferably semi-transparent as in the case of hatching.

  (B) of FIG. 2 shows the display content of the display unit 130 and the external display device 200 when the display device 100 selects a specific word / phrase with the electronic dictionary application and displays the detail screen. In the illustrated example, the detail screen includes a detail area for displaying detailed information on a specific word and a jump destination preview area for displaying detailed information on another word focused from among the contents displayed in the detail area. It is done. In the external display device 200, the jump destination preview area is set to a black area, and the content of the jump destination preview area can not be read. On the other hand, in the display unit 130, semi-transparent hatching is attached as identification information so that the jump destination preview area is recognized as a black area on the external display device 200. Although the type of the displayed screen is different, the blackened area is set to a part of the screen displayed on the external display device 200, and the area corresponding to the blackened area is displayed on the screen displayed on the display unit 130. The point to which identification information is added is the same as (a) of FIG.

  Although display control between the display device 100 and the external display device 200 has been described in FIG. 2, the display device 100 performs display control with the external display device 200 and also performs communication with the student devices 300 a to 300 c. May perform another display control. An example in which the display device 100 performs another display control with the student devices 300a to 300c will be described with reference to FIG. FIG. 3 is a schematic view showing an outline of the display control of the display device 100 for controlling display of the student devices 300 a to 300 c in the display control system 1.

  In the illustrated example, a detail screen is displayed on the display unit 130 of the display device 100 and the external display device 200 as in (b) of FIG. 2. At this time, the display device 100 can transmit the image data 154 for the external display device to the student devices 300a to 300c, and can display the image data 154 on each student device.

  The display device 100 may cause the student devices 300a to 300c to display the image data 154 for the external display device, for example, when it is difficult for the users (students) of the student devices 300a to 300c to view the external display device 200. it can. That is, the image data output unit 163 of the display device 100 can transmit the image data 154 for external display device to the student devices 300a to 300c using the communication unit 120, and can display the image data 154. Thereby, the content information can be properly grasped among the users.

(Flow of processing)
A flow of processing performed by the display device 100 according to the present embodiment will be described with reference to FIG. FIG. 4 is a flowchart illustrating an example of the flow of processing performed by the display device 100. In the following description, it is assumed that the display device 100 and the external display device 200 have already been connected, and that some screen is displayed on the display unit 130.

  First, the black area setting unit 161 sets a black area for the predetermined content information included in the image data 153 for the own device being displayed on the display unit 130 based on the user input, and the setting content is set. The black area information shown is stored in the black area information 152 (S1). Next, the image data generation unit 162 obtains predetermined content information from the content information 151, and further obtains blackened region information for the predetermined content information from the blackened region information 152. Then, the image data generation unit 162 generates image data for the own apparatus in which identification information is added to the area designated by the blackened area information from the image data obtained by expanding the predetermined content information, and the image data for the own apparatus Save to 153. (S2: image data generation step). Thereafter, the image data output unit 163 causes the display unit 130 to display the image data 153 for the own apparatus (S3: image data output step).

  After S3, the image data generation unit 162 determines whether an update trigger has been detected (S4). If it is determined that the update trigger has been detected (YES in S4), the image data generation unit 162 acquires the image data 153 for the own apparatus, and the area designated by the black area information acquired from the black area information 152 is black. Overlap in the fill area. Then, the image data generation unit 162 generates image data for an external display device, and stores the image data for the external display device 154 (S5). On the other hand, when the update trigger is not detected, the process proceeds to S1, and the processes of S1 to S4 are repeated.

  After S5, the image data output unit 163 causes the external display device 200 to display the image data 154 for the external display device via the connection unit 110 (S6). Thereafter, the control unit 160 determines whether to output the image data 154 for external display device to the student devices 300a to 300c based on the user input (S7). When it is determined that the external display device image data 154 is to be output (YES in S7), the image data output unit 163 transmits the external display device image data 154 to the student devices 300a to 300c via the communication unit 120, Display (S8). Then, the display device 100 ends the series of processes. On the other hand, when it is determined that the image data 154 for the external display device is not output (NO in S7), the display device 100 ends the series of processes.

  As a result of the above processing, the display device 100 includes the entire content of the content information in the own device, and in the external display, the image data 153 for the own device indicating that it is filled in a black filled area. indicate. The display device 100 further causes the external display device 200 to display image data 154 for the external display device in which at least a part of the region is difficult to read. Accordingly, for example, by setting a part of the content information as a black area, the interest of the user who is looking at the external display device 200 can be aroused. In addition, the user of the display device 100 can confirm which area is a black area together with the black area. Then, it is possible to output and display the image data 154 for the external display device on the student devices 300a to 300c as needed. Therefore, it is effective in providing the display apparatus 100 which can perform detailed display control of displaying only the part which the user intended using a black-painted area | region.

  The image data output unit 163 may transmit the image data 153 for the own apparatus or the image data 154 for the external display device to the student devices 300a to 300c for display. For example, the image data 154 for the external display device in which the black area is set first may be displayed on the student devices 300a to 300c, and the image data 153 for the own device may be displayed later.

Second Embodiment
Embodiment 2 of the present invention will be described below with reference to FIGS. 1 and 5. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

(Configuration of display control system)
The display control system 1 according to the second embodiment of the present invention is basically the same as the first embodiment, but the configuration is partially different. In the present embodiment, the student devices 300 a to 300 c have the same configuration as the display device 100. Specifically, the student devices 300 a to 300 c include content information (not shown) having the same content as the content information 151 included in the display device 100. Furthermore, when the student devices 300 a to 300 c perform the same input as the input to the display device 100, the student devices 300 a to 300 c can perform the same display as the display device 100. For example, the student devices 300a to 300c are preferably devices having the same hardware configuration and software configuration as the display device 100 (such as a tablet terminal having an electronic dictionary or an electronic dictionary application). In addition, when the student devices 300a to 300c receive input content from the display device 100 via the communication unit 120, the student devices 300a to 300c can execute various operations based on the received input content. In other words, the student devices 300a to 300c can treat the input content received from the display device 100 as a user input received by an input unit (not shown) provided in the student device.

(Configuration of display device)
The display device 100 according to the present embodiment is basically the same as that of the first embodiment, but the configuration is partially different. When the input content synchronization unit 164 receives a user input to synchronize the display content of the student device 300 a to 300 c with the display device 100 from the input unit 140, a history of the input content input to the display device 100 is input. Acquired from the input history 155. Then, the input content synchronization unit 164 transmits the history of the acquired input content to the student devices 300a to 300c, and synchronizes the display content of the student devices 300a to 300c with the display device 100. That is, the input content synchronization unit 164 acquires the history of the input content input to the display device 100 from the input history 155 in order to display the content information as the image data 153 for the own device on the display unit 130. The history is transmitted to the student devices 300a-300c. Then, the student devices 300a to 300c can reproduce the same display content as the display device 100 by correcting the image data according to the input content in chronological order based on the input content included in the received history. Thereby, the display content is synchronized between the display device 100 and the student devices 300a to 300c.

(Flow of processing)
The flow of processing performed by the display device 100 according to the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart illustrating an example of the flow of processing performed by the display device 100.

  The processes of S1 to S6 are the same as the contents described with reference to FIG. 4 in the first embodiment. After S6, the input content synchronization unit 164 determines whether a user input to synchronize the display content of the student devices 300a to 300c with the display device 100 has been received (S11). When it is determined that the user input for synchronizing the display content is received (YES in S11), the input content synchronization unit 164 acquires the input history necessary for synchronizing the display content from the input history 155, and the student device 300a Send to ~ 300c. Then, the student devices 300a to 300c correct the image data based on the input history, and reproduce the same display content as the display device 100 (S12).

  According to the above processing, the display device 100 according to the present embodiment causes the student devices 300a to 300c to operate according to the input content input to the display device 100, and synchronizes the display content with the display device 100. be able to.

  In the present embodiment, when the same input as that of the display device 100 is performed on the student devices 300a to 300c, the display device 100 and the student devices 300a to 300c can perform the same display. That is the premise. This is particularly effective, for example, when it is desired to display content information that is restricted to be developed to a third party on the student devices 300a to 300c. In addition, as for the content information having no restriction as described above, the image data 153 for the own apparatus may be transmitted from the display device 100 to the student devices 300a to 300c as in the first embodiment. In this case, the control unit 160 may select one of the methods based on the presence or absence of the restriction on the content information.

  When the student devices 300a to 300c reproduce the same display contents as the display device 100 based on the input history, the same contents as the image data 153 for the own device are displayed on the student devices 300a to 300c. That is, the images displayed on the student devices 300a to 300c are not blackened areas but images to which identification information is added. Therefore, in order to cause the student devices 300a to 300c to display the same content as the image data 154 for the external display device, the display device 100 may transmit additional additional information together with the input history. The additional information may be, for example, for causing the student devices 300a to 300c to execute the processing corresponding to S5 and S6 in FIG. 4 after generating the image data 153 for the own apparatus based on the input history.

Third Embodiment
A third embodiment of the present invention will be described below with reference to FIGS. 1 and 6 to 9. In addition, about the member which has the same function as the member demonstrated in the said embodiment for convenience of explanation, the same code | symbol is appended, and the description is not repeated.

(Configuration of display control system)
The display control system 1 according to the third embodiment of the present invention is basically the same as each of the above embodiments, but the configuration is partially different. In the present embodiment, the display device 100 can stop and restart the update of the display content displayed by the external display device 200 at an arbitrary timing.

(Configuration of display device)
The display device 100 according to the present embodiment is basically the same as each of the first embodiment, but the configuration is partially different. The control unit 160 can stop or restart the update of the display content of the external display device 200 according to the user operation on the input unit 140. Specifically, when the control unit 160 detects a button input to switch the execution and stop of the generation of the image data 154 for the external display device, the control unit 160 executes the generation of the image data for the external display device with respect to the image data generation unit 162 And stop switching.

  The image data generation unit 162 can switch between the execution and the stop of the generation of the image data 154 for the external display device. Specifically, when the control unit 160 detects that the button for executing the generation of the image data 154 for the external display device is pressed, the image data generation unit 162 generates the image data 154 for the external display device. Run. Further, when the control unit 160 detects that the button for stopping the generation of the image data for external display device 154 is pressed, the image data generation unit 162 does not generate the image data for external display device 154.

(Specific example of display content update stop)
A specific example in which the display device 100 stops updating the display contents of the external display device 200 in the display control system 1 according to the third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic view showing an outline of display control in the display control system 1, and (a) shows a state in which image data is displayed in synchronization between the display device 100 and the external display device 200. (B) shows a state in which the update of the display content on the external display device 200 is stopped.

  FIG. 6A shows the display content of the display unit 130 and the external display device 200 when the display device 100 is displaying a search screen of the electronic dictionary application. In the illustrated example, a search screen is displayed on the display unit 130 and the external display device 200 as the same display content. Here, it is assumed that the user of the display device 100 presses an output stop button 403 described later, and further, a specific keyword is input as a search term on the search screen, and the search result screen is displayed on the display unit 130.

  In the illustrated example, the search screen displayed on the display unit 130 includes five buttons on the right side of the screen: a screen transfer button 401, an operation transfer button 402, an output stop button 403, an area addition button 404, and an area deletion button 405. It is shown.

  When the screen transfer button 401 is pressed, the display device 100 starts outputting the image data 154 for the external display device to the student devices 300a to 300c. When the operation transfer button 402 is pressed, the display device 100 starts transmitting an input history for synchronizing display contents to the student devices 300a to 300c. If the display contents of the external display device 200 are not updated when the screen transfer button 401 is pressed, the generation of the image data 154 for the external display device and the output to the external display device 200 are executed together. You may

  The output stop button 403 is a button that is displayed while the display device 100 is updating the display content of the external display device 200. When the button is pressed, the display device 100 displays the display content of the external display device 200. Stop updating. When the output stop button 403 is pressed, the display is switched to an output resume button 406 described later. When the output resume button 406 is pressed, the display device 100 resumes the update of the display content of the external display device 200, and the display of the button is switched to the output stop button 403. Note that the output stop button 403 and the output restart button 406 may be toggle buttons that are alternately displayed by pressing as described above, or may be simultaneously displayed as separate buttons.

  When the area addition button 404 is pressed, the display device 100 transitions to a state in which a blackened area can be added. When the area deletion button 405 is pressed, the display device 100 transitions to a state where it is possible to release the black area which has been set. As for the state where it is possible to add the black area and the state where it is possible to cancel the black area which has already been set, any operation on the input unit 140 other than setting and canceling the black area is accepted. It may be canceled in the case.

  FIG. 6B shows the display content of the display unit 130 and the external display device 200 when updating of the display content of the external display device 200 is stopped in FIG. 6A. In the illustrated example, a search result screen is displayed on the display unit 130, while the same search screen as (a) in FIG. 6 is displayed on the external display device 200. Further, in the search result screen displayed on the display unit 130, an output resume button 406 is displayed instead of the output stop button 403. That is, when the update of the display content is being stopped, the external display device 200 continues to display the display content (the search screen according to the illustrated example) displayed immediately before the update is stopped.

(A specific example of updating the display content restart)
A specific example in which the display device 100 resumes the update of the display content of the external display device 200 in the display control system 1 according to the third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a schematic view showing an outline of display control in the display control system 1. (a) shows a state in which updating of display contents in the external display device 200 is stopped, (b) shows the display device 100 and the external display A state in which image data is synchronously displayed with the device 200 is shown.

  (A) of FIG. 7 shows the display content of the display unit 130 and the external display device 200 in a state in which the update of the display content of the external display device 200 is stopped. In the illustrated example, the display unit 130 displays a search result screen of the electronic dictionary application, and the external display device 200 displays a search screen. Also, in (b) of FIG. 7, after the user sets a black area for a part of the search result screen in (a) of FIG. 7, the output resume button 406 is pressed to display the external display device 200. The display content of the display unit 130 and the external display device 200 when updating of the content is resumed is shown.

  The flow of the operation will be described. First, after the search screen is displayed on the display device 100 and the external display device 200, the output stop button 403 is pressed to stop the synchronization of the display content. Thereafter, a search is performed on the display device 100 to display a search result screen, and the area addition button 404 is pressed to set a black area. During this time, the search screen continues to be displayed on the external display device 200. After setting the black area, when the output resume button 406 is pressed on the display device 100 to resume the synchronization of the output content, the external display device 200 displays the search result screen in which the black area is set. It becomes. Note that the output restart button 406 is switched to the output stop button 403 by this operation.

(Specific example of display content update stop-restart)
In the display control system 1 according to the third embodiment of the present invention, a specific example of the display device 100 stopping and resuming the update of the display content of the external display device 200 will be described with reference to FIG. FIG. 8 is a schematic view showing an outline of display control in the display control system 1. FIG. 8A shows a case where updating of display contents in the external display device 200 is stopped to cancel a black area, FIG. 8 shows the case where the update of the display content of the external display device 200 is resumed after (a). FIG. 8 can be performed after the series of operations in FIG.

  (A) of FIG. 8 shows the display content of the display unit 130 and the external display device 200 in the case of stopping the update of the display content of the external display device 200 and releasing the black area. In the illustrated example, a search result screen of the electronic dictionary application is displayed on the display unit 130 and the external display device 200, and “(1) to (3)” is attached to the search result screen as a notification message. Three black areas and identification information are set.

  First, the user of the display device 100 presses the output stop button 403 to stop the update of the display content of the external display device 200. By this operation, the update of the display content of the external display device 200 is stopped, and the output stop button 403 is switched to the output restart button 406.

  Next, the user of the display device 100 presses the area deletion button 405, and then cancels the black area by designating two black areas whose notification messages are "(2)" and "(3)". . The designation of the black area may be performed by the range designation as illustrated, or may be individually designated. During this time, the external display device 200 continues to display the search result screen in which the three black areas with “(1) to (3)” attached are set.

  FIG. 8B shows the display content of the external display device 200 after the user of the display device 100 stops updating the display content of the external display device 200 and cancels the black area in FIG. 8A. 7 shows the display contents of the display unit 130 and the external display device 200 in the case of resuming the update of. In the illustrated example, the display unit 130 displays a search result screen on which the content of the operation performed by the user of the display device 100 in (a) of FIG. 8 is reflected. Specifically, a search result screen is displayed in which the identification information corresponding to the two black areas whose notification messages are "(2)" and "(3)" are deleted. Here, when the user of the display device 100 presses the output resume button 406 to restart the update of the display content of the external display device 200, the display content corresponding to the display content of the display unit 130 is displayed on the external display device 200. Be done. Specifically, the two blackened areas whose notification messages are “(2)” and “(3)” are released, and a search result screen in which the output resume button 406 is switched to the output stop button 403 is displayed. .

  The cancellation of the black area is performed to display the content that has become unreadable due to the black area in a readable manner. Therefore, when it is better for the user (teacher) of the display device 100 not to display the release procedure on the external display device 200 or the like, the display content on the external display device 200 according to the procedure described using (a) of FIG. Release the black area after stopping the update of. If there is no problem in displaying the release procedure on the external display device 200 or the like, the update of the display content may not be stopped and only the black area may be released.

(Flow of processing)
A flow of processing performed by the display device 100 according to the present embodiment will be described with reference to FIG. FIG. 9 is a flowchart illustrating an example of the flow of processing performed by the display device 100. In the following description, it is assumed that the display device 100 is updating the display contents of the external display device 200.

  First, the control unit 160 determines whether the output stop button 403 is pressed (S21). When it is determined that the output stop button 403 is pressed (YES in S21), the control unit 160 causes the image data generation unit 162 to stop the generation of the image data for the external display device, thereby displaying the display content of the external display device 200. The update is stopped (S22).

  After S22, the blackened area setting unit 161 sets predetermined content information included in the image data 153 directed to the own device being displayed on the display unit 130 based on the user input, as in S1 of FIGS. 4 and 5. In contrast, a black area is set and stored in the black area information 152 (S23). Furthermore, the image data generation unit 162 generates image data for the own apparatus in which identification information is attached to the area set in S22, and stores the image data for the own apparatus. (S24). Thereafter, the image data output unit 163 causes the display unit 130 to display the image data 153 for the own apparatus (S25).

  After S25, the control unit 160 determines whether the output resume button 406 is pressed (S26). When it is determined that the output resume button is pressed (YES in S26), the control unit 160 causes the image data generation unit 162 to execute generation of image data for an external display device again, thereby displaying the display content of the external display device 200. The update is resumed (S27). Then, in the same manner as S5 and S6 in FIGS. 4 and 5, the image data generation unit 162 generates image data for the external display device and stores it in the image data for the external display device 154 (S28), and the image data output unit The external display device 200 causes the external display device 200 to display the external display device image data 154 stored by the external device 163 (S29).

  In this manner, the display device 100 according to the present embodiment can stop and restart the update of the display content of the external display device 200. When a user (teacher) of the display device 100 performs an operation of setting and canceling a black area while displaying content information using the external display device 200, for example, the user looks at the operation to the student who visually recognizes the external display device 200. I will not be By using this, it is possible to set a black area as a question at an arbitrary timing, for example, and create a perforated problem that causes a student who visually recognizes the external display device 200 to answer. Also, after the student's answer, the black area can be released to show the correct answer to the student.

  In the above description, the screen transfer button 401 and the like are displayed on the external display device 200 as in the display unit 130, but these buttons may be displayed on the external display device 200. You don't have to.

[Modification]
In each of the above-described embodiments, the display device 100 may acquire the display content displayed on any of the student devices 300 a to 300 c and may display the display content on the display unit 130. The user of the display device 100 may confirm how the image data is displayed on the student devices 300a to 300c.

  In the second embodiment, the black area setting unit 161 stores the black area information set using the display device 100 in the black area information 152. However, the present invention is not limited to this. For example, the blackened area setting unit 161 may obtain blackened area information set in any of the student devices 300 a to 300 c via the communication unit 120 and may store the blackened area information 152 in the blackened area information 152.

  In the third embodiment, the trigger for the image data generation unit 162 to stop and resume the update of the display content of the external display device 200 may be other than the pressing of the button. For example, in the case where the display device 100 displays image data including content information prohibited to be displayed on the external display device 200, the update of the display content of the external display device 200 may be automatically stopped. At this time, whether to output to the external display device 200 may be set in advance for each content information.

  In each of the embodiments, the display device 100 is configured to generate and output the image data 153 for the own device and the image data 154 for the external display device. However, the display device 100 may have any configuration as long as it is capable of displaying image data in which a black area is set on the external display device 200 or the like. For example, the display device 100 may be configured to generate only the image data 153 for the own device. At this time, the display device 100 transmits the image data 153 for the own device to the external display device 200, and further transmits area information indicating an area corresponding to the identification information attached to the image data 153 for the own device. Then, the external display device 200 causes the region indicated by the area information to be displayed in black on the image data 153 directed to the own device, and then causes the region to be displayed. The area information may be in the same format as the black area information 152 or may further include information on a display format such as how to display the black area. For example, the area information may include information as to whether it is difficult to read the blackened area or to be readable but distinguishable from other areas.

[Example of software implementation]
The control block (in particular, the image data generation unit 162 and the image data output unit 163) of the display device 100 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or realized by software. You may

  In the latter case, the display device 100 includes a computer that executes instructions of a program that is software that implements each function. The computer includes, for example, at least one processor (control device), and at least one computer readable storage medium storing the program. Then, in the computer, the processor reads the program from the recording medium and executes the program to achieve the object of the present invention. As the processor, for example, a CPU (Central Processing Unit) can be used. As the recording medium, for example, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, and the like can be used besides “a non-temporary tangible medium” such as a ROM (Read Only Memory). In addition, a RAM (Random Access Memory) for expanding the program may be further provided. Further, the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention may also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

[Summary]
The display device (100) according to aspect 1 of the present invention is a display device capable of displaying content information (151) on an external display device (200) connected to the own device, wherein the display device Image data generation unit (162) for generating image data for own device (153) to be displayed and image data for external display device (154) to be displayed on the external display device; image data for own device and the external display device And an image data output unit (163) for displaying each of the image data for the target on the target device, and the image data for the external display device is difficult to read at least a part of the image data for the own device. The image data is composed of

  According to the above configuration, the display device displays the image data for the own device on the own device and causes the external display device to display the image data for the external display device in which at least a part of the area is difficult to read. Can. Thereby, for example, by making part of the content information difficult to read, it is possible to evoke the interest of the user who is looking at the external display device. Also, the user of the display device can confirm the content of the content information included in the difficult-to-read area by looking at the display device. Therefore, it is effective in providing a display which can perform detailed display control of displaying only a portion which a user intended using a hard-to-understand area.

  In the display device (100) according to aspect 2 of the present invention, in the aspect 1, the content information (151) may include information for learning.

  According to the above configuration, the display device can display a part of the information for learning on the external display device as difficult to read. As a result, for example, the user (teacher) of the display device can carry out a lecture or the like using the difficult-to-interpret area to the students.

  In the display device (100) according to aspect 3 of the present invention, in the aspect 1 or 2, the image data for own device (153) and the image data for external display device (154) include at least one keyword. An area and a detailed information area including detailed information of the keyword may be included, and the hard-to-read area may be set for at least a part of the detailed information area.

  According to the above configuration, the external display device displays image data for the external display device in which at least a part of the detailed information area is a difficult-to-read area. As a result, it is possible to provide a display device that is more convenient, for example, displaying only a part of the detailed information area as the difficult-to-read area on the external display device.

  In the display device (100) according to the fourth aspect of the present invention, in any of the first to third aspects, the image data for own device (153) is a region corresponding to the region where the reading is difficult to read It is good also as composition provided with discernment information for distinction.

  According to the above configuration, the user of the display device can determine based on the identification information whether or not the difficult-to-read area is appropriately set. Thus, the user of the display device can appropriately manage the difficult-to-read area without comparing the display device with the external display device.

  The display device (100) according to aspect 5 of the present invention further includes an area setting section (black area setting section 161) configured to set and release the area which is made difficult to read in any one of the aspects 1 to 4 The configuration may be According to the above configuration, the display device can set and cancel the difficult-to-understand area for the external display device-oriented image data displayed on the external display device.

  In the display device (100) according to aspect 6 of the present invention, in any of the aspects 1 to 5, the image data generation unit (162) is the external display device based on the image data (153) for the own device. It is also possible to generate the directed image data (154), and the execution and the stop of the generation of the image data for the external display device may be configured to be switchable according to a user operation.

  According to the above configuration, the display device can stop and restart the update of the display content of the external display device. Thereby, when the user of the display device performs an operation of setting and canceling the difficult-to-understand area while displaying content information using, for example, an external display device, the operation can be seen by a student who visually recognizes the external display device Absent. By using this, it is possible to set a difficult-to-understand area as a question at an arbitrary timing, for example, and create a perforated problem that causes a student who visually recognizes the external display device to answer. In addition, after the student answers, the incomprehensible area can be canceled to show the correct answer to the student.

  In the display device (100) according to the seventh aspect of the present invention, in any one of the first to sixth aspects, the display device is communicably connected to at least one student device (300a to 300c), The image data output unit (163) may be configured to transmit the image data directed to the apparatus itself (153) or the image data directed to the external display device (154) to the student device, and to display the image data.

  According to the above configuration, the display device can cause the student device to display image data for which all content information can be confirmed or image data in which a difficult-to-read area is set. Thus, for example, after a part of the content information is presented to the user (student) of the student device using the external display device or the student device, all the content information can be presented to the student device. That is, by displaying different image data on the external display device and the student device, it is possible to present content information with variations to the student.

  The display device (100) according to aspect 8 of the present invention is the display device (100) according to any one of the aspects 1 to 6, wherein at least one student device (300a-300c) includes the same content information (151) as the display device. An input content synchronization unit that transmits a history of input content input to the display device to the content display device in order to display the content information and synchronizes the display content 164) may be further provided.

  According to the above configuration, the student device can be operated according to the input content input to the display device, and the display content can be synchronized with the display device. As a result, for example, with regard to content information for which a license contract for prohibiting the display of the content on another device is made, the content information can be displayed on another device without violating the license contract.

  A display control system (1) according to a ninth aspect of the present invention is connected to the display device (100) according to any one of the first to eighth aspects and the display device, and displays the image data for external display device (154). An external display device (200) may be provided and at least one student device (300a to 300c) communicably connected to the display device. According to the above-mentioned composition, the same operation effect as the above-mentioned mode 1 is produced.

  A display control method according to aspect 10 of the present invention is a display control method of a display device (100) capable of displaying content information (151) on an external display device (200) connected to the own device, An image data generation step (S2) for generating image data (153) directed to the display unit (130) and image data (154) directed to the external display device to be displayed on the external display device; And an image data output step (S3) for displaying the data and the image data for the external display device on the target device, wherein the image data for the external display device is at least a partial region of the image data for the own device. Image data that makes it difficult to read According to the above-mentioned composition, the same operation effect as the above-mentioned mode 1 is produced.

  The display device (100) according to each aspect of the present invention may be realized by a computer. In this case, the computer is operated as each unit (software element) included in the display device, and the display device is transmitted to the computer. A control program of a display device to be realized and a computer readable recording medium recording the same also fall within the scope of the present invention.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

Reference Signs List 1 display control system 100 display unit 110 connection unit 120 communication unit 130 display unit 140 input unit 150 storage unit 151 content information 152 black area information 153 image data for own device 154 image data for external display device 155 input history 160 control unit 161 Black area setting part (area setting part)
162 image data generation unit 163 image data output unit 164 input content synchronization unit 200 external display device 300 a student device 300 b student device 300 c student device

Claims (10)

A display device capable of displaying content information on an external display device connected to the own device,
An image data generation unit that generates image data for the own device displayed on a display unit of the own device and image data for an external display device displayed on the external display device;
An image data output unit configured to display the image data for the own device and the image data for the external display device on a target device,
The display device, wherein the image data for the external display device is image data in which at least a part of the region of the image data for the own device is difficult to read.   The display device according to claim 1, wherein the content information includes information for learning. The image data for own apparatus and the image data for external display device include a keyword area including at least one keyword and a detailed information area including detailed information of the keyword,
The display device according to claim 1, wherein the area which is made difficult to read is set for at least a part of the detailed information area.   The image data for the own device distinguishes a region in the image data for the own device corresponding to the region in the image data for the external display device that is difficult to read from other regions in the image data for the own device. The display device according to any one of claims 1 to 3, further comprising identification information for performing the process.   The display device according to any one of claims 1 to 4, further comprising an area setting unit that sets and cancels the area that is difficult to read.   The image data generation unit generates the image data for the external display device based on the image data for the own device, and execution and stop of the generation of the image data for the external display device are performed according to the user operation. The display device according to any one of claims 1 to 5, which is switchable.   The display device is communicably connected to at least one second external display device, and the image data output unit is directed to the second external display device for the image data for the own device or for the external display device. The display device according to any one of claims 1 to 6, wherein image data is transmitted and displayed.   It is communicably connected to at least one second external display device provided with the same content information as the display device, and the input content input to the display device to display the content information The display device according to any one of claims 1 to 6, further comprising an input content synchronization unit that transmits a history to the second external display device and synchronizes display content. A display device according to any one of claims 1 to 8;
An external display device connected to the display device and displaying the image data for the external display device;
A display control system, comprising: at least one student device communicably connected to the display device. A display control method of a display device capable of displaying content information on an external display device connected to the own device, comprising:
An image data generation step of generating image data for the own device displayed on a display unit of the own device and image data for an external display device displayed on the external display device;
An image data output step of causing the target device to display each of the image data for the own device and the image data for the external display device;
The display control method, wherein the image data for the external display device is image data in which an area of at least a part of the image data for the own device is difficult to read.