JP5110548B2 - Image display system, image supply apparatus, image display method, and program - Google Patents

Description

  The present invention relates to an image display apparatus, an image display method, and a program including an image supply apparatus, an image output apparatus, and an information terminal connected via a network.

  In recent years, in presentations, presentation materials stored as digital data in an image supply device such as a computer are enlarged and displayed by an image output device such as a large liquid crystal display or a projector, so that the audience of the presentation The content of presentations is often visible.

  In presentations, presentation materials to be visually recognized by a listener of the presentation often include a plurality of materials such as materials created by an application for image creation and materials created by a spreadsheet application.

  When a presentation is performed using a plurality of presentation materials, it is necessary to switch the images of the presentation materials to be viewed by the audience according to the situation of the explanation, which puts a burden on the presenter of the presentation.

  Therefore, a technique capable of displaying images of a plurality of presentation materials at the same time is required, and as a technique enabling this, for example, there is one disclosed in JP-A-2004-54134.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2004-54134, a projector receives image data supplied from a plurality of computers, and combines the received image data into image data of one screen. Then, the projector projects an image based on the synthesized image data. By using this technique, images of a plurality of presentation materials can be displayed simultaneously.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2004-54134, in order to simultaneously display images of a plurality of presentation materials by the projector, it is necessary to prepare a plurality of computers that respectively store the plurality of presentation materials and supply them to the projector. Furthermore, when switching between multiple display screens, there is a problem that a plurality of computers must be operated even during the presentation.

  Further, when images of a plurality of presentation materials are combined and displayed on one screen, characters and the like of the images of the presentation materials are reduced and displayed as compared with the case where the images of each presentation material are displayed individually. For this reason, there is a problem that it is difficult for a listener of the presentation to read characters and the visibility of the image of the presentation material is impaired.

  Here, there is a method of arranging a plurality of projectors on a network and projecting images of different presentation materials to the respective projectors by using a projector corresponding to a network that has recently become popular.

  If this method is used, since images of a plurality of presentation materials can be projected by different projectors, characters of the images of the presentation materials are not reduced and displayed. Therefore, the problem that the visibility of the image of the presentation material is impaired can be solved.

  However, even when using a projector that supports the network, when using a projector that does not have a memory function, it is necessary to prepare multiple computers that store different presentation materials and supply them to the projector. It cannot be solved.

  In addition, when images of multiple presentation materials are projected by different projectors, presentation attendees who are noticing the presenter's explanation or who have temporarily left their seats when they miss the explanation of the presenter There is a problem that the image of is lost.

  According to the present invention, images of a plurality of materials stored in a single image supply device are output by different image output devices, and among the images of the plurality of materials output, an image of a material that should be noted at present It is an object to provide an image display system, an image supply device, an image output device, an information terminal, an image supply method, and a program that can clearly show the information to the listener.

In order to achieve the above object, the present invention provides:
An image display system comprising a plurality of image output devices, at least one information terminal, and the image output device and an image supply device for supplying an image signal to the information terminal,
The image supply device includes:
An image supply device side controller that generates image signals of a plurality of images to be displayed on each of the plurality of image output devices;
An image supply device-side display unit that displays an image according to any of the plurality of image signals in each of a plurality of display regions;
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices, and a display area selection input for selecting one of the plurality of display areas are received, and each of these inputs is received. First input means for notifying the image supply device side control unit,
When the display image identification input is notified from the first input unit, the image supply device side control unit associates an image signal of an image displayed in each display region with each display region. When the display area selection input is notified from the first input means, the transmitted image signal is sent to the information terminal to the image output apparatus that outputs the image displayed in the selected display area. Send an image transfer request to transfer,
The image output device includes:
An image output device side control unit for receiving an image signal transmitted from the image supply device side control unit;
An image output unit that outputs an image based on the image signal received by the image output device side control unit,
When the image output device side control unit receives the image signal, the image output device side control unit causes the image output unit to output an image based on the received image signal. When the image transfer request is received, the image output device side control unit outputs the received image signal to the information terminal To the side control unit,
The information terminal
An information terminal side display unit for displaying an image based on the image signal;
An information terminal side control unit that receives an image signal of an image to be displayed on the information terminal side display unit,
When receiving the image signal, the information terminal side control unit displays an image based on the received image signal on the information terminal side display unit.

An image display system is configured with a plurality of image output devices and at least one information terminal, and supplies image signals to the image output device and the information terminal. An image supply device side control unit for generating image signals of a plurality of images to be displayed;
An image supply device-side display unit that displays an image according to any of the plurality of image signals in each of a plurality of display regions;
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices, and a display area selection input for selecting one of the plurality of display areas are received, and each of these inputs is received. First input means for notifying the image supply device side control unit,
When the display image identification input is notified from the first input unit, the image supply device side control unit associates an image signal of an image displayed in each display region with each display region. When the display area selection input is notified from the first input means, the transmitted image signal is sent to the information terminal to the image output apparatus that outputs the image displayed in the selected display area. An image transfer request that requests transfer is transmitted.

An image output device that constitutes an image display system together with at least one information terminal and an image supply device that supplies an image signal,
An image output device side control unit for receiving an image signal transmitted from the image supply device;
An image output unit that outputs an image based on the image signal received by the image output device side control unit,
When receiving the image signal, the image output device side control unit causes the image output unit to output an image based on the received image signal, and transfers the image signal transmitted by the image supply device to the information terminal. Is received, the received image signal is transmitted to the information terminal.

An information terminal that constitutes an image display system together with a plurality of image output devices and an image supply device that supplies image signals,
An information terminal side display unit for displaying an image based on the image signal;
An information terminal side control unit for receiving an image signal of an image to be displayed on the information terminal side display unit;
A second input means for receiving an image output device selection input for selecting any one of the plurality of image output devices and notifying the information terminal device side control unit of the image output device selection input;
When the image output device selection input is notified from the second input means, the information terminal side control unit receives an image received by the image output device to the image output device indicated by the image output device selection input. When an image transmission request for requesting signal transmission is transmitted and then an image signal transmitted from the image output device is received, an image based on the received image signal is displayed on the display unit on the information terminal side.

In addition, an image supply device-side control unit that generates image signals of a plurality of images to be displayed on each of a plurality of image output devices, and an image that displays an image based on any of the plurality of image signals in each of a plurality of display areas An image supply device including a supply device side display unit, an image output device side control unit that receives an image signal transmitted from the image supply device side control unit, and an image signal received by the image output device side control unit A plurality of image output devices each including an image output unit that outputs an image based on the information terminal, an information terminal side display unit that displays an image based on the image signal, and an image signal that is displayed on the information terminal side display unit An image display method in an image display system comprising: at least one information terminal comprising an information terminal side control unit,
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices and a display area selection input for selecting any of the plurality of display areas are received, and each of these inputs is Processing to notify the image supply device side control unit;
When the display image identification input is notified, the image supply device-side control unit transmits an image signal of an image displayed in each display region to an image output device associated with each display region, and the display region selection When the input is notified, the image supply device side control unit requests the image output device that outputs the image displayed in the selected display area to transfer the transmitted image signal to the information terminal. A process of sending an image transfer request;
When the image output device side control unit receives the image signal, the image output unit outputs an image based on the received image signal, and when the image transfer request is received, the received image signal is transmitted to the information terminal. Processing to send to the side control unit,
When the information terminal side control unit receives the image signal, the information terminal side control unit includes a process of displaying an image based on the received image signal on the information terminal side display unit.

In addition, an image display system is configured together with a plurality of image output devices and at least one information terminal, and an image supply device side control unit that generates image signals of a plurality of images to be displayed on each of the plurality of image output devices; In each of the display areas, an image supply device having an image supply device-side display unit that displays an image according to any of the plurality of image signals,
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices and a display area selection input for selecting any of the plurality of display areas are received, and each of these inputs is A function for notifying the image supply device side control unit;
When the display image identification input is notified, the image supply device-side control unit transmits an image signal of an image displayed in each display region to an image output device associated with each display region, and the display region selection When the input is notified, the image supply device side control unit requests the image output device that outputs the image displayed in the selected display area to transfer the transmitted image signal to the information terminal. And a function of transmitting an image transfer request.

Also, an image output device side control unit that constitutes an image display system together with at least one information terminal and an image supply device that supplies an image signal, and that receives an image signal transmitted from the image supply device, and the image output device An image output device having an image output unit that outputs an image based on the image signal received by the side control unit;
When the image output device side control unit receives the image signal, the image output unit outputs an image based on the received image signal, and transfers the image signal transmitted by the image supply device to the information terminal. When the image transfer request for requesting is received, the function of transmitting the received image signal to the information terminal is realized.

In addition, an image display system is configured together with a plurality of image output devices and an image supply device that supplies an image signal, and an information terminal side display unit that displays an image based on the image signal, and an image to be displayed on the information terminal side display unit An information terminal having an information terminal side control unit that receives the image signal of
A function of accepting an image output device selection input for selecting one of the plurality of image output devices, and notifying the information terminal device side control unit of the image output device selection input;
When the image output device selection input is notified, the information terminal side control unit requests the image output device indicated by the image output device selection input to transmit the image signal received by the image output device. After transmitting a transmission request, when the information terminal side control unit receives an image signal transmitted from the image output device indicated by the image output device selection input, an image based on the received image signal is transmitted to the information terminal. A function to display on the side display unit is realized.

  Since the present invention is configured as described above, it is not necessary to prepare a plurality of image supply apparatuses even when images of a plurality of materials are output simultaneously.

  In addition, it is possible to avoid losing the image of the material that should be noted at present among the plurality of output material images.

It is a figure which shows the 1st Embodiment of this invention and is a figure which shows an example of a presentation system. It is a block diagram which shows the structure of the computer shown in FIG. It is a block diagram which shows the structure of the client terminal shown in FIG. It is a block diagram which shows the structure of the projector shown in FIG. It is a flowchart for demonstrating operation | movement of the presentation system shown in FIG. FIG. 3 is a diagram illustrating a state in which a window including a button for searching for a projector is displayed on the display screen illustrated in FIG. 2. It is a figure which shows an example of the screen for matching with the image currently displayed on each display area displayed on the display screen shown in FIG. 2, and the projector which projects those images. It is a figure which shows the example of 1 structure of the matching table which the memory | storage part has memorize | stored. FIG. 3 is a diagram illustrating a state in which a window including a presentation start button for starting a presentation is displayed on the display screen illustrated in FIG. 2. It is a figure which shows the projection screen of a projector. It is a figure which shows the display state of the image before changing matching with a display area and a projector. It is a flowchart for demonstrating operation | movement of the presentation system shown in FIG. It is a figure which shows the other example of the screen for matching with the image currently displayed on each of the display areas currently displayed on the display screen shown in FIG. 2, and the projector which projects those images. . It is a figure which shows the display state of the image after changing matching with a display area and a projector. It is a figure which shows the display state of the image before the listener of a presentation operates a client terminal. It is a flowchart for demonstrating operation | movement of the presentation system shown in FIG. It is a figure which shows the state in which the window containing the terminal name button for selecting a projector is displayed on the display screen shown in FIG. It is a figure which shows the display state of the image after the listener of a presentation operates a client terminal.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing a first embodiment of the present invention, and shows an example of a presentation system.

  As shown in FIG. 1, the presentation system of this embodiment includes a computer 10 that is an image supply device used by a presenter of a presentation, a plurality of client terminals 20a to 20n that are information terminals used by a listener of the presentation, and an image. A plurality of projectors 30a to 30n, which are output devices, and a plurality of screens (not shown) that display images projected by the projectors 30a to 30n are provided. The computer 10, the client terminals 20a to 20n, and the projectors 30a to 30n are connected by a LAN (Local Area Network) 1 and can communicate with each other.

  In the presentation system of this embodiment, the display screen of the display unit of the computer 10 is divided into a plurality of display areas, and a plurality of presentation materials used in the presentation are displayed in the respective display areas.

  Further, the images displayed in the display areas of the display screen of the display unit of the computer 10 can be displayed on the projectors 30a to 30n and the client terminals 20a to 20n.

  FIG. 2 is a block diagram showing a configuration of the computer 10 shown in FIG.

  As shown in FIG. 2, the computer 10 includes a control unit 11 that is an image supply device side control unit, a communication IF (interface) unit 12, a UI (user interface) unit 13 that is a first input unit, and a storage unit. 14 and a display unit 15 which is an image supply device side display unit.

  As shown in FIG. 2, the display screen 15-1 displayed by the display unit 15 is divided into a plurality of display areas 15a to 15d.

The control unit 11 controls the operation of the computer 10, and typical operations include the following.
(1) An image signal is generated, and an image based on the generated image signal is displayed on the display unit 15.
(2) The image signal of the image for each of the display areas 15a to 15d is generated.
(3) The control signal indicating the association between the display areas 15a to 15d and the projectors 30a to 30n that display the images displayed in the display areas 15a to 15d is received from the UI unit 13, and the contents of the association Is stored in the storage unit 14. The image signals of the images displayed in the display areas 15 a to 15 d are transmitted to the associated projectors 30 a to 30 n via the communication IF unit 12.
(4) When a reply request command for requesting transmission of an IP address and a terminal name is broadcast to each device on the LAN 1 and a reply request response to the reply request command is received from each device, the reply request response is received. The included IP address and terminal name are associated with each other and stored in the storage unit 14.

  The communication IF unit 12 mediates communication with each device on the LAN 1.

  The UI unit 13 receives an association between the display areas 15a to 15d and the projectors 30a to 30n that display the images displayed in the display areas 15a to 15d from the operator of the computer 10, and controls the received contents as a control signal. To the control unit 11.

  The storage unit 14 stores the IP address and terminal name of the computer 10. Further, the IP address and the terminal name included in the reply request response received by the control unit 11 are stored in association with each other. Further, the association between the display areas 15a to 15d and the projectors 30a to 30n that display the images displayed in the display areas 15a to 15d is stored.

  The display unit 15 displays an image based on the image signal generated by the control unit 11.

  FIG. 3 is a block diagram showing a configuration of the client terminal 20a shown in FIG. The client terminals 20b to 20n have the same configuration.

  As shown in FIG. 3, the client terminal 20a includes a control unit 21 that is an information terminal side control unit, a communication IF (interface) unit 22, a UI unit 23 that is a second input means, a storage unit 24, And a display unit 25 which is an information terminal side display unit.

The control unit 21 controls the operation of the client terminal 20a, and typical operations include the following.
(1) An image signal is received via the communication IF unit 22, and an image based on the received image signal is displayed on the display unit 25.
(2) The UI unit 23 receives a control signal indicating the terminal name of the projectors 30a to 30n on which the image to be displayed on the client terminal 20a selected by the operator of the client terminal 20a is displayed, and stores the terminal name Store in the unit 24.
(3) When a reply request command for requesting transmission of an IP address and a terminal name is broadcast to each device on the LAN 1 and a reply request response to the reply request command is received from each device, the reply request response The included IP address and the terminal name are stored in the storage unit 24 in association with each other.
(4) The image transmission request is transmitted from the UI unit 23 to the projectors 30a to 30n that are projecting the image to be displayed on the client terminal 20a selected by the operator of the client terminal 20a.
(5) When a reply request command for requesting transmission of an IP address and a terminal name is received, a reply request response including the IP address and terminal name of the own terminal is transmitted from the storage unit 24 to the transmission source of the reply request command.

  The communication IF unit 22 mediates communication with each device on the LAN 1.

  The UI unit 23 receives selection of the terminal names of the projectors 30a to 30n that are projecting images to be displayed on the client terminal 20a from the operator of the client terminal 20a, and transmits the received contents to the control unit 11 as a control signal. To do.

  The storage unit 24 stores the IP address and terminal name of the computer 10. Also, the IP address and the terminal name included in the reply request response received by the control unit 21 are stored in association with each other.

  The display unit 25 displays an image based on the image signal generated or received by the control unit 21.

  FIG. 4 is a block diagram showing a configuration of the projector 30a shown in FIG. The projectors 30b to 30n have the same configuration.

  As illustrated in FIG. 4, the projector 30 a includes a control unit 31 that is an image output device side control unit, a communication IF unit 32, a storage unit 33, and a projection unit 34 that is an image output unit.

The control unit 31 controls the operation of the projector 30a, and typical operations include the following.
(1) An image signal is received via the communication IF unit 32, and an image based on the received image signal is projected on the projection unit 34.
(2) When a reply request command for requesting transmission of an IP address and a terminal name is broadcast to each device on the LAN 1 and a reply request response to the reply request command is received, it is included in the reply request response The stored IP address and the terminal name are stored in the storage unit 33 in association with each other.
(3) The image signal received from the computer 10 is transmitted to the client terminals 20a to 20b via the communication IF unit 32.
(4) When a reply request command for requesting transmission of the IP address and the terminal name is received, a reply request response including the IP address and terminal name of the own terminal is transmitted from the storage unit 24 to the transmission source of the reply request command.

  The communication IF unit 32 mediates communication with each device on the LAN 1.

  The storage unit 33 stores its own IP address and terminal name. Further, the IP address and the terminal name included in the reply request response received by the control unit 31 are stored in association with each other.

  Hereinafter, in the presentation system configured as described above, when the presenter of the presentation operates the computer 10, the images displayed in the display areas 15a to 15d of the display screen 15-1 are displayed on the projectors 30a to 30n and The case where it displays on the client terminals 20a-20n is demonstrated.

  Here, the terminal name of the computer 10 is “MPC”, the terminal names of the client terminals 20a to 20n are “PCa” to “PCn”, and the terminal names of the projectors 30a to 30n are “PJa” to “PJn”, respectively. "

  Further, the display area names of the display areas 15a to 15d are “Sa to Sd”, respectively.

  Further, as shown in FIG. 2, different presentation materials used in the presentation are displayed in the display areas 15a to 15d of the display screen 15-1.

  FIG. 5 is a flowchart for explaining the operation of the presentation system shown in FIG. 1, and displaying images in the display areas 15a to 15d of the display screen 15-1 on the projectors 30a to 30n and the client terminals 20a to 20n. The operations of the computer 10, projectors 30a to 30n, and client terminals 20a to 20n are shown.

  In the operation flow described below, steps S1 to S14 are operations before the start of the presentation, and steps S15 to S19 are operations after the start of the presentation.

  First, the presenter uses an input device (not shown) such as a mouse or a keyboard in the computer 10 to instruct the display unit 15 to display a screen for searching for the projectors 30 a to 30 n on the LAN 1.

  The control unit 11 that has received a control signal for instructing screen display via the UI unit 13 causes the display unit 15 to display a screen for searching for the projectors 30 a to 30 n on the LAN 1.

  FIG. 6 is a diagram illustrating the display screen 15-1 illustrated in FIG. 2, and illustrates a state in which a window including a projector search button for searching for the projectors 30a to 30n is displayed.

  Next, the presenter presses the projector search button 2 shown in FIG. 6 using an input device such as a mouse or a keyboard.

  The UI unit 13 that has received a press of the search button 2 of the projector from the presenter converts the received content into a control signal, and transmits the control signal to the control unit 11.

  The control unit 11 that has received the control signal transmitted from the UI unit 13 generates a reply request command for requesting a reply of the IP address and the terminal name. Then, the IP address of the computer 10 is acquired from the storage unit 14, and a reply request command generated using the acquired IP address as a transmission source address is broadcast to the LAN 1 via the communication IF unit 12 (step S1). In this case, the reply request command is also transmitted to the client terminals 20a to 20n on the LAN 1, but the description is omitted in the flowchart of FIG.

  The control unit 31 of the projectors 30a to 30n receives the reply request command transmitted from the computer 10 via the communication IF unit 32 (step S2).

  Then, the control unit 31 acquires the IP address and terminal name of its own device from the storage unit 33, and a reply request including the IP address and terminal name acquired using the computer 10 that is the transmission source of the received reply request command as the transmission destination. A response is transmitted (step S3). In this case, the reply request response is also transmitted from the client terminals 20a to 20n on the LAN 1, but the description is omitted in the flowchart of FIG.

  The control unit 11 of the computer 10 receives the reply request response (step S4).

  And the control part 11 judges whether the transmission origin of the received reply request response is projector 30a-30n from the terminal name contained in the said reply request response, and judged that it is projector 30a-30n. For only those, the received IP address and the terminal name are associated with each other and stored in the storage unit 14 (step S5). Here, only those having terminal names starting with “PJ” indicating the projectors 30a to 30n are stored.

  Then, the control unit 11 causes the display unit 15 to display a screen for associating the display areas 15a to 15d with the projectors 30a to 30n. (Step S6).

  FIG. 7 is a diagram showing the display screen 15-1 shown in FIG. 2, in which the images displayed in the display areas 15a to 15d are associated with the projectors 30a to 30n that project the images. An example of the screen for performing is shown. The terminal name and IP address displayed on the screen for performing the association are the terminal name and IP address stored in the storage unit 24 in step S5.

  Here, the presenter uses an input device such as a mouse or a keyboard, and associates which projectors 30a to 30n project the images displayed in the display areas 15a to 15d.

  For example, when it is desired to project an image displayed in the display area 15a (display area name: Sa) on the projector 30a (terminal name: PJa), as shown in FIG. The association is established by connecting “Sa” and “PJa”, which is the terminal name of the projector 30a, with an arrow.

  Also, the presenter selects the display area name on which the presentation material that he / she has determined to be particularly important, for example, the main presentation material used for explanation, is displayed using the important area selection buttons 3a to 3b shown in FIG. To do. In FIG. 7, the display area 15a (display area name: Sa) is determined to be an important display area, and is selected by the important area selection button 3a.

  Then, the presenter performs association between the display areas 15a to 15d and the projectors 30a to 30n and selection of an important display area, and then presses the confirmation button 4 shown in FIG. When the confirm button 4 is pressed, a window including a presentation start button that is pressed when the presentation is started is displayed on the display screen 15-1. The presentation start button will be described later.

  When the confirm button 4 is pressed, the UI unit 13 accepts an association between the display areas 15a to 15d and the projectors 30a to 30n and selection of an important display area from the presenter (step S7). The received content is transmitted to the control unit 11 as a control signal.

  The control unit 11 that has received the control signal transmitted from the UI unit 13 displays the content of the association between the display areas 15a to 15d and the projectors 30a to 30n indicated by the control signal and the content of selection of the important display area. It memorize | stores in the matching table which the memory | storage part 14 has (step S8).

  FIG. 8 is a diagram illustrating a configuration example of the association table stored in the storage unit 14.

  As shown in FIG. 8, the association table 16 has a display area name column 16a, a terminal name column 16b, and an important column 16c.

  In the display area name column 16a and the terminal name column 16b, the contents of the association performed by the presenter are written. For example, since the presenter associates the display area name with the terminal name as shown in FIG. 7, the presenter corresponds to the display area name “Sa” in the display area name column 16a as shown in FIG. The terminal name “PJa” is written in the terminal name column 16b.

  Also, “1” indicating that the presenter is an important display area is written in the important column 16c corresponding to the display area name “Sa” selected by the important area selection button 3a on the screen shown in FIG. . In the important column 16c corresponding to another display area name, “0” indicating that it is not an important display area is written.

  Next, the control unit 11 acquires from the terminal name column 16b the terminal name in which “1” is written in the important column 16c of the association table 16 stored in the storage unit 14. Here, the control unit 11 acquires “PJa” from the terminal name column 16b.

  Then, the control unit 11 acquires an IP address associated with the acquired terminal name from the storage unit 14, and uses the IP address as a transmission destination address to transfer an image signal to the client terminals 20a to 20n. The request is transmitted via the communication IF unit 12 (step S9). Here, the control unit 11 transmits an image transfer request to the projector 30a.

  The control unit 31 of the projector 30a that has received the image transfer request transmitted from the computer 10 receives the image transfer request transmitted from the computer 10 via the communication IF unit 32 (step S10). In addition, this operation | movement is operation | movement only of the projector 30a which displays the image of the display area 15a selected as an important display area among several projectors 30a-30n. Hereinafter, among the operations of the projectors 30a to 30n in the flowchart shown in FIG. 5, the operations of steps S10, S11, S14, and S18 are operations of only the projector 30a.

  Next, the control unit 31 generates a reply request command for requesting a reply of the IP address and the terminal name. Then, the IP address of the own device is acquired from the storage unit 33, and a reply request command generated using the acquired IP address as a transmission source address is broadcast to the LAN 1 via the communication IF unit 12 (step S11). In this case, the reply request command is also transmitted to the computer 10 and the projectors 30b to 30n on the LAN 1, but the description is omitted in the flowchart of FIG.

  The control unit 21 of the client terminals 20a to 20n receives the reply request command transmitted from the projector 30a via the communication IF unit 22 (step S12).

  Then, the control unit 21 acquires the IP address and terminal name of the own terminal from the storage unit 24, and a reply request including the IP address and terminal name acquired using the projector 30a that is the transmission source of the received reply request command as the transmission destination. A response is transmitted (step S13). In this case, the reply request response is also transmitted from the computer 10 and the projectors 30b to 30n on the LAN 1, but the description is omitted in the flowchart of FIG.

  When receiving the reply request response, the control unit 31 of the projector 30a determines whether the source of the received reply request response is the client terminal 20a to 20n from the terminal name included in the reply request response. For only those determined to be client terminals 20a to 20n, the received IP address and terminal name are associated with each other and stored in the storage unit 33 (step S14). Here, only those having a terminal name starting with “PC” indicating the client terminals 20a to 20n are stored.

  This is the operation in the preparation stage of the presentation. The operation after the presentation is started will be described below.

  FIG. 9 is a diagram showing the display screen 15-1 shown in FIG. 2, and shows a state where a window including a presentation start button for starting a presentation is displayed.

  The presenter presses the presentation start button 5 shown in FIG. 9 using an input device such as a mouse or a keyboard.

  The UI unit 13 that has received a press of the presentation start button 5 from the presenter transmits the content as a control signal to the control unit 11.

  The control unit 11 that has received the control signal from the UI unit 13 generates an image signal for each of the display areas 15a to 15d (step S15).

  Then, the association table stored in the storage unit 14 in step S8 is acquired, and the generated image signals for the display areas 15a to 15d are transmitted to the projectors 30a to 30n via the communication IF unit 12 according to the contents of the association. Transmit (step S16).

  The control unit 31 of the projectors 30a to 30n that has received the image signal transmitted from the computer 10 via the communication IF 32 causes the projection unit 34 to project an image based on the received image signal (step S17).

  FIG. 10 is a diagram showing a projection screen of the projector 30a.

  As illustrated in FIG. 10, the projector 30 a displays an image by enlarging the screen size projected by the projector 30 a based on the image signal transmitted from the computer 10. In FIG. 10, the projectors 30 b to 30 n and the images projected by them are omitted for easy understanding, but the projectors 30 b to 30 n are also similar to the image signals transmitted from the computer 10. Based on this, the image is projected to be enlarged to the size of the screen to be projected.

  Next, since the control unit 31 of the projector 30a has received the image transfer request in step S10, the image signal received from the computer 10 is communicated to the client terminals 20a to 20n having the IP address stored in step S14. Transmission is performed via the IF unit 32 (step S18).

  The control unit 21 of the client terminals 20a to 20n that has received the image signal transmitted from the projector 30a via the communication IF 22 causes the display unit 25 to display an image based on the received image signal (step S19).

  Thus, in the first embodiment, a part of the image displayed on the display screen 15-1 of one computer 10 can be simultaneously displayed by the plurality of projectors 30a to 30n. Further, since the presenter can select an image to be displayed on the client terminals 20a to 20n, the listener can recognize an image of the presentation material to be noted.

  The presenter can change the association between the display areas 15a to 15d and the projectors 30a to 30n during the presentation.

  A case where the presenter of the presentation changes the association between the display areas 15a to 15d and the projectors 30a to 30n during the presentation by operating the computer 10 will be described below.

  More specifically, the image of the display area 15a currently projected on the large screen by the projector 30a is projected on the small screen by the projector 30b, and the image of the display area 15b currently projected on the small screen by the projector 30b. Is assumed to be projected onto a large screen by the projector 30a. Also, the important display area is changed from the display area 15a to the display area 15b.

  FIG. 11 is a diagram illustrating a display state of an image before changing the association between the display areas 15a to 15d and the projectors 30a to 30n.

  As shown in FIG. 11, the projector 30a projects an image displayed in the display area 15a, and the projector 30b projects an image displayed in the display area 15b. The display area 15a is selected as an important area, and the image displayed in the display area 15a is displayed on the display screen 25-1 displayed by the display unit 25 of the client terminal 20a. Similarly, the display units 25 of the client terminals 20b to 20n display the images displayed in the display area 15a. In FIG. 11, the projectors 30c to 30n and the images projected by them are omitted.

  FIG. 12 is a flowchart for explaining the operation of the presentation system shown in FIG. 1, and the computer 10, projectors 30 a to 30 n, and client when the association between the display areas 15 a to 15 d and the projectors 30 a to 30 n is changed. The operation | movement of the terminals 20a-20n is shown.

  First, the presenter uses an input device such as a mouse or a keyboard on the computer 10 to instruct the display unit 15 to display a screen for associating the display areas 15a to 15d with the projectors 30a to 30n.

  The control unit 11 that has received the control signal for instructing screen display via the UI unit 13 causes the display unit 15 to display a screen for associating the display areas 15a to 15d with the projectors 30a to 30n (step S31). ).

  FIG. 13 is a diagram showing the display screen 15-1 of the display unit 15 shown in FIG. 2, and images displayed on the display areas 15a to 15d and projectors 30a to 30n that project these images. The other example of the screen for performing the matching of is shown.

  Here, the presenter uses an input device such as a mouse or a keyboard, and associates which projectors 30a to 30n project the images displayed in the display areas 15a to 15d.

  Here, the image displayed in the display area 15b (display area name: Sb) is projected onto the projector 30a (terminal name: PJa), and the image displayed in the display area 15a (display area name: Sa) is projected to the projector. 30b (terminal name: PJb), as shown in FIG. 13, the display area name “Sb” of the display area 15b and the terminal name “PJa” of the projector 30a are connected by an arrow and displayed. The display area name “Sa” of the area 15a is associated with the terminal name “PJb” of the projector 30b by connecting them with arrows.

  The presenter selects the display area name Sb with the important area selection button 3b in order to change the important display area to the display area 15b (display area name: Sb).

  Then, the presenter performs association between the display areas 15a to 15d and the projectors 30a to 30n and selection of an important display area, and then presses the confirm button 4 shown in FIG.

  When the confirm button 4 is pressed, the UI unit 13 receives the association between the display areas 15a to 15d and the projectors 30a to 30n and selection of an important display area from the presenter (step S32). The received content is transmitted to the control unit 11 as a control signal.

  The control unit 11 that has received the control signal transmitted from the UI unit 13 displays the content of the association between the display areas 15a to 15d and the projectors 30a to 30n indicated by the control signal and the content of selection of the important display area. It memorize | stores in the matching table 16 which the memory | storage part 14 has (step S33).

  Next, the control unit 11 acquires from the terminal name column 16b the terminal name in which “1” is written in the important column 16c of the association table 16 stored in the storage unit 14. Here, the control unit 11 acquires “PJa” from the terminal name column 16b.

  Then, the control unit 11 acquires an IP address associated with the acquired terminal name from the storage unit 14, and uses the IP address as a transmission destination address to transfer an image signal to the client terminals 20a to 20n. The request is transmitted via the communication IF unit 12 (step S34). Here, since the display area 15b displayed on the projector 30a (terminal name: PJa) is an important display area, the control unit 11 transmits an image transfer request to the projector 30a.

  The control unit 31 of the projector 30a that has received the image transfer request transmitted from the computer 10 receives the image transfer request transmitted from the computer 10 via the communication IF unit 32 (step S35). This operation is an operation of only the projector 30a that displays the image of the display area 15b selected as the important display area among the plurality of projectors 30a to 30n. Hereinafter, among the operations of the projectors 30a to 30n in the flowchart shown in FIG. 12, the operations of steps S35, S36, S39, and S42 are operations of only the projector 30a.

  Next, the control unit 31 generates a reply request command for requesting a reply of the IP address and the terminal name. Then, the IP address of the own apparatus is acquired from the storage unit 33, and a reply request command generated using the acquired IP address as a transmission source address is broadcast to the LAN 1 via the communication IF unit 12 (step S36). In this case, the reply request command is also transmitted to the computer 10 and the projectors 30b to 30n on the LAN 1, but the description is omitted in the flowchart of FIG.

  The control unit 21 of the client terminals 20a to 20n receives the reply request command transmitted from the projector 30a via the communication IF unit 22 (step S37).

  Then, the control unit 21 acquires the IP address and terminal name of the own terminal from the storage unit 24, and a reply request including the IP address and terminal name acquired using the projector 30a that is the transmission source of the received reply request command as the transmission destination. A response is transmitted (step S38). In this case, the reply request response is also transmitted from the computer 10 and the projectors 30b to 30n on the LAN 1, but the description is omitted in the flowchart of FIG.

  When receiving the reply request response, the control unit 31 of the projector 30a determines whether the source of the received reply request response is the client terminal 20a to 20n from the terminal name included in the reply request response. For only those determined to be client terminals 20a to 20n, the received IP address and terminal name are associated with each other and stored in the storage unit 33 (step S39). Here, only those having a terminal name starting with “PC” indicating the client terminals 20a to 20n are stored.

  Next, the control unit 11 of the computer 10 acquires the association table stored in the storage unit 14 in step S33, and sends the image signal for each of the display areas 15a to 15d to the communication IF unit 12 according to the contents of the association. To the projectors 30a to 30n (step S40).

  The control unit 31 of the projectors 30a to 30n that has received the image signal transmitted from the computer 10 via the communication IF 32 causes the projection unit 34 to project an image based on the received image signal (step S41).

  Next, since the control unit 31 of the projector 30a has received the image transfer request in step S35, the control unit 31 communicates the image signal received from the computer 10 to the client terminals 20a to 20n having the IP address stored in step S39. Transmission is performed via the IF unit 32 (step S42).

  The control unit 21 of the client terminals 20a to 20n that has received the image signal transmitted from the projector 30a via the communication IF 22 causes the display unit 25 to display an image based on the received image signal (step S43).

  FIG. 14 is a diagram illustrating a display state of an image after changing the association between the display areas 15a to 15d and the projectors 30a to 30n.

  As shown in FIG. 14, the projector 30a projects an image displayed in the display area 15b, and the projector 30b projects an image displayed in the display area 15a. Since the display area 15b is selected as an important display area, the image displayed in the display area 15b is displayed on the display screen 25-1 displayed by the display unit 25 of the client terminal 20a. Similarly, the display units 25 of the client terminals 20b to 20n display the images displayed in the display area 15b. In FIG. 14, the projectors 30c to 30n and the images projected by them are omitted.

In this way, the presenter of the presentation can display the presentation material that matches the explanation by changing the association between the display area and the projector that displays the image displayed in each display area even during the presentation. It can be carried out.
(Second Embodiment)
In the first embodiment described above, the case where the image displayed on the display screen 15-1 of the computer 10 is transmitted from the computer 10 used by the presenter of the presentation to the projectors 30a to 30n has been described.

  In the second embodiment, in the presentation system shown in FIG. 1, when the audience of the presentation operates the client terminals 20a to 20n, the image projected by any of the projectors 30a to 30n is displayed on the client terminal 20a. The case of displaying at ~ 20n will be described.

  More specifically, a case is assumed where the image currently projected by the projector 30a displayed on the client terminal 20a is changed to the image projected by the projector 30c.

  FIG. 15 is a diagram illustrating a display state of an image before the presentation listener operates the client terminal 20a.

  As shown in FIG. 15, the same image as the image projected by the projector 30a is displayed on the display screen 25-1 displayed on the display unit 25 of the client terminal 20a. The projector 30c projects an image displayed in the display area 15c. In FIG. 15, the projectors 30b, 30d to 30n and the images projected by them, and the client terminals 20b to 20n and the images displayed by them are omitted.

  FIG. 16 is a flowchart for explaining the operation of the presentation system shown in FIG. 1, and shows the operation of the client terminal 20a and the projector 30c when the image displayed on the client terminal 20a is changed.

  First, a listener who operates the client terminal 20a uses an input device such as a mouse or a keyboard on the client terminal 20a to instruct the display unit 25 to display a screen for searching for the projectors 30a to 30n on the LAN 1. Do.

  The control unit 21 that has received a control signal for instructing screen display via the UI unit 23 causes the display unit 25 to display a screen for searching for the projectors 30 a to 30 n on the LAN 1. Here, on the display screen 25-1 displayed by the display unit 25, a window including the projector search button 2 similar to the screen illustrated in FIG. 6 is displayed.

  Next, the listener who operates the client terminal 20a presses the projector search button 2 using an input device such as a mouse or a keyboard.

  The UI unit 23 that has received the press of the projector search button 2 from the listener who operates the client terminal 20 a converts the received content into a control signal, and transmits the control signal to the control unit 21.

  The control unit 21 that has received the control signal transmitted from the UI unit 23 generates a reply request command for requesting a reply of the IP address and the terminal name. Then, the IP address of the client terminal 20a is acquired from the storage unit 24, and a reply request command generated using the acquired IP address as a transmission source address is broadcast to the LAN 1 via the communication IF unit 22 (step S51).

  The control unit 31 of the projector 30c receives the reply request command transmitted from the client terminal 20a via the communication IF unit 32 (step S52).

  And the control part 31 acquires the IP address and terminal name of an own apparatus from the memory | storage part 33, and the reply containing the IP address and terminal name which acquired the client terminal 20a which is the transmission origin of the received reply request command as a transmission destination. A request response is transmitted (step S53).

  The control unit 21 of the client terminal 20a receives a reply request response (step S54).

  And the control part 21 judges whether the transmission origin of the received reply request response is the projectors 30a-30n from the terminal name contained in the said reply request response, and judges that it is the projectors 30a-30n. For only those, the received IP address and the terminal name are associated with each other and stored in the storage unit 24 (step S55). Here, only those having terminal names starting with “PJ” indicating the projectors 30a to 30n are stored.

  Next, the control unit 21 of the client terminal 20a causes the display unit 25 to display a screen for selecting the projectors 30a to 30n that are projecting the image to be displayed on the client terminal 20a (step S56).

  FIG. 17 is a diagram illustrating a display screen 25-1 displayed by the display unit 25 illustrated in FIG. 2, and illustrates a state in which a window including a terminal name button for selecting the projectors 30a to 30n is displayed. Yes.

  As shown in FIG. 17, the display screen 25-1 displays windows including terminal name buttons 6a to 6d in which the terminal names of the plurality of projectors 30a to 30d are described.

  Next, the listener who operates the client terminal 20a presses one of the terminal name buttons 6a to 6d in which the terminal names of the projectors 30a to 30d that are projecting images to be displayed on the client terminal 20a are described. Here, the terminal name button 6c in which “PJc” which is the terminal name of the projector 30c is described is pressed.

  The UI unit 23 of the client terminal 20a accepts pressing of any of the terminal name buttons 6a to 6d from the listener who operates the client terminal 20a (step S57), and transmits a control signal indicating the terminal name to the control unit 21. Here, the UI unit 23 transmits a control signal indicating “PJc” which is the terminal name of the projector 30 c to the control unit 21.

  The control unit 21 that has received the control signal transmitted from the UI unit 23 stores the terminal name indicated by the control signal in the storage unit 24 (step S58).

  Then, the control unit 21 transmits an image transmission stop request for requesting stop of image transmission to the projector 30a that is currently transmitting an image to the client terminal 20a via the communication IF unit 22 (step S59). ).

  The control unit 31 of the projector 30a that has received the image transmission stop request transmitted from the client terminal 20a via the communication IF unit 32 stops the transmission of the image to the client terminal 20a.

  Next, the control unit 21 searches for the same terminal name as the terminal name stored in the storage unit 24 in step S58 from the terminal name stored in the storage unit 24 in association with the IP address in step S55, and matches the terminal name. An IP address corresponding to the name is acquired (step S60). Here, since the projector 30c (terminal name: PJc) is selected in step S58, the IP address of the projector 30c is acquired.

  Next, the control unit 21 transmits an image transmission request for requesting image transmission to the projector having the IP address acquired in step S60 via the communication IF unit 32 (step S61). Here, an image transmission request is transmitted to the projector 30c.

  The control unit 31 of the projector 30c receives the image transmission request transmitted from the client terminal 20a via the communication IF 32 (step S62).

  Then, the control unit 31 transmits the image signal received from the computer 10 to the client terminal 20a (step S63).

  The control unit 21 of the client terminal 20a that has received the image signal transmitted from the projector 30c via the communication IF 32 causes the display unit 25 to display an image based on the received image signal (step S64).

  FIG. 18 is a diagram illustrating a display state of an image after the listener of the presentation operates the client terminal 20a.

  As shown in FIG. 18, the same image as the image projected by the projector 30c is displayed on the display screen 25-1 displayed by the display unit 25 of the client terminal 20a. In FIG. 18, the projectors 30b and 30d to 30n and the images they project are omitted from the client terminals 20b to 20n and the images that they display.

  As described above, in the second embodiment, the listener of the presentation can display an image projected by an arbitrary projector on his / her client terminal. As a result, the image that the listener is paying attention to can be viewed up close.

  In the above-described two forms, a projector is described as an example of an apparatus for displaying an image. However, an apparatus for displaying an image is not limited to a projector, and other devices having a screen display function are available. Including devices such as displays.

  In the above-described two forms, the case where the display screen of the computer used by the presenter of the presentation is divided into four display areas has been described as an example. However, the number of display areas is limited to four. It is possible that more or less than four are possible.

  The LAN connecting the computer, the client terminal, and the projector is not limited to a wired LAN, and a wireless LAN can also be applied.

  In the present invention, the processing in the image supply device, in the image output device, and in the information terminal is implemented by the image supply device, a program for realizing its functions, in addition to the above-described dedicated hardware. The program may be recorded on a recording medium that can be read by the image output apparatus and the information terminal, and the program recorded on the recording medium is read and executed by the image supply apparatus, the image output apparatus, and the information terminal. The image supply device, the image output device, and the recording medium that can be read by the information terminal include a transfer medium such as a floppy disk, a magneto-optical disk, a DVD, and a CD, as well as an image supply device, an image output device, and an information terminal. Refers to the HDD built in the.

  While the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Claims (5)

An image display system comprising a plurality of image output devices, at least one information terminal, and the image output device and an image supply device for supplying an image signal to the information terminal,
The image supply device includes:
An image supply device side controller that generates image signals of a plurality of images to be displayed on each of the plurality of image output devices;
An image supply device-side display unit that displays an image according to any of the plurality of image signals in each of a plurality of display regions;
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices, and a display area selection input for selecting one of the plurality of display areas are received, and each of these inputs is received. First input means for notifying the image supply device side control unit,
When the display image identification input is notified from the first input unit, the image supply device side control unit associates an image signal of an image displayed in each display region with each display region. When the display area selection input is notified from the first input means, the transmitted image signal is sent to the information terminal to the image output apparatus that outputs the image displayed in the selected display area. Send an image transfer request to transfer,
The image output device includes:
An image output device side control unit for receiving an image signal transmitted from the image supply device side control unit;
An image output unit that outputs an image based on the image signal received by the image output device side control unit,
When the image output device side control unit receives the image signal, the image output device side control unit causes the image output unit to output an image based on the received image signal. When the image transfer request is received, the image output device side control unit To the side control unit,
The information terminal
An information terminal side display unit for displaying an image based on the image signal;
An information terminal side control unit that receives an image signal of an image to be displayed on the information terminal side display unit,
When the information terminal side control unit receives the image signal, the information terminal side control unit displays an image based on the received image signal on the information terminal side display unit. The image display system according to claim 1,
The information terminal includes a second input unit that receives an image output device selection input for selecting one of the plurality of image output devices and notifies the information terminal device side control unit of the image output device selection input. ,
When the image output device selection input is notified from the second input means, the information terminal side control unit receives an image received by the image output device to the image output device indicated by the image output device selection input. When an image transmission request for transmitting a signal is transmitted and then an image signal transmitted from the image output device is received, an image based on the received image signal is displayed on the information terminal side display unit,
When the image output device side control unit receives the image transmission request, the image output system transmits an image signal received from the image supply device to the information terminal side control unit. An image display system that forms an image display system together with a plurality of image output devices and at least one information terminal, and that supplies image signals to the image output device and the information terminal, each of which is displayed on each of the plurality of image output devices An image supply device side control unit for generating image signals of a plurality of images;
An image supply device-side display unit that displays an image according to any of the plurality of image signals in each of a plurality of display regions;
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices, and a display area selection input for selecting one of the plurality of display areas are received, and each of these inputs is received. First input means for notifying the image supply device side control unit,
When the display image identification input is notified from the first input unit, the image supply device side control unit associates an image signal of an image displayed in each display region with each display region. When the display area selection input is notified from the first input means, the transmitted image signal is sent to the information terminal to the image output apparatus that outputs the image displayed in the selected display area. An image supply apparatus that transmits an image transfer request for requesting transfer. An image supply device-side control unit that generates image signals of a plurality of images to be displayed on each of the plurality of image output devices, and an image supply device that displays an image based on one of the plurality of image signals in each of a plurality of display areas An image supply device including a side display unit, an image output device side control unit that receives an image signal transmitted from the image supply device side control unit, and an image signal received by the image output device side control unit A plurality of image output devices each including an image output unit that outputs an image; an information terminal side display unit that displays an image based on the image signal; and information that receives an image signal of an image to be displayed on the information terminal side display unit An image display method in an image display system having at least one information terminal including a terminal-side control unit,
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices and a display area selection input for selecting any of the plurality of display areas are received, and each of these inputs is Processing to notify the image supply device side control unit;
When the display image identification input is notified, the image supply device-side control unit transmits an image signal of an image displayed in each display region to an image output device associated with each display region, and the display region selection When the input is notified, the image supply device side control unit requests the image output device that outputs the image displayed in the selected display area to transfer the transmitted image signal to the information terminal. A process of sending an image transfer request;
When the image output device side control unit receives the image signal, the image output unit outputs an image based on the received image signal, and when the image transfer request is received, the received image signal is transmitted to the information terminal. Processing to send to the side control unit,
When the information terminal side control unit receives the image signal, the image display method includes a process of displaying an image based on the received image signal on the information terminal side display unit. An image display system that forms an image display system together with a plurality of image output devices and at least one information terminal, generates an image signal of a plurality of images to be displayed on each of the plurality of image output devices, and a plurality of displays An image supply device having an image supply device-side display unit that displays an image based on any of the plurality of image signals in each of the regions.
A display image identification input indicating the association between the plurality of display areas and the plurality of image output devices and a display area selection input for selecting any of the plurality of display areas are received, and each of these inputs is A function for notifying the image supply device side control unit;
When the display image identification input is notified, the image supply device-side control unit transmits an image signal of an image displayed in each display region to an image output device associated with each display region, and the display region selection When the input is notified, the image supply device side control unit requests the image output device that outputs the image displayed in the selected display area to transfer the transmitted image signal to the information terminal. A program for realizing the function of transmitting an image transfer request.

Images