JP4103878B2 - Creating an image specification file and playing an image using it - Google Patents

Description

  The present invention relates to a technique for creating an image designation file for designating an image file such as a scenario file or an index file and reproducing an image using the file.

  Projection display devices (that is, projectors) are often used for presentations because they can display an enlarged image on a projection screen. In a presentation, usually, a plurality of presentation sheets (also called “slides”) are sequentially displayed for each page. This process is executed according to a scenario file for sequentially displaying images for each page. Note that the scenario file and the image file used in accordance with the scenario file are prepared in advance by the user and supplied to the projector.

  However, it has been difficult for the projector to sequentially display images for each page according to the scenario file. This is because it is relatively difficult to create (describe) a scenario file using a predetermined command or to prepare an image file representing an image displayed according to the scenario file in a format suitable for the projector.

  Further, when reproducing an image file (data file), the projector needs a storage device having a capacity capable of storing the image file. However, there is a demand for a technique for reducing the capacity of the storage device of the projector. .

  The present invention has been made to solve the above-described problems in the prior art, and provides a technique capable of easily displaying images for each page sequentially in a scenario playback device such as a projector. The purpose. It is a second object of the present invention to provide a technique capable of relatively reducing the capacity of the storage device of the projector.

  In order to solve at least a part of the problems described above, the apparatus according to the first aspect of the present invention is a scenario reproducing apparatus capable of reproducing only an image file of a predetermined format according to a scenario file for sequentially displaying images for each page. A scenario creation device for creating the supplied scenario file, comprising: an input unit including a pointing device; a display unit; and a scenario creation unit for creating the scenario file according to an operation of the input unit. The scenario creation unit displays an execution icon for causing the scenario creation unit to execute processing on the display unit, and includes scenario information and image information for each page by operating the pointing device. Drag and drop the file icon of the source material file to the execution icon Once it flops, creating the scenario file on the basis of the scenario information, and generates an image file of the predetermined format on the basis of the image information.

  In this way, the user can drag and drop the file icon of the material file in the predetermined format onto the execution icon for causing the scenario creation unit to execute the process, thereby using the material file in the predetermined format, And an image file of a predetermined format can be easily created.

  According to a second aspect of the present invention, there is provided a scenario creating apparatus including an input unit including a pointing device and a display unit. Only a predetermined format image file is displayed according to a scenario file for sequentially displaying images for each page. A scenario creation method for creating a scenario file supplied to a reproducible scenario playback device, wherein (a) an execution icon for causing the scenario creation unit to execute a process is displayed on the display unit And (b) when a file icon of a material file in a predetermined format including scenario information and image information for each page is dragged and dropped onto the execution icon by the operation of the pointing device. Creating the scenario file based on the image information based on the image information Characterized in that it comprises a step of generating an image file of the shaped type, the.

  When this method is used, the same operation and effect as when the apparatus of the present invention is used, and a scenario file and an image file of a predetermined format can be easily created using a material file of a predetermined format. It becomes.

  The recording medium according to the third aspect of the present invention is a scenario creation apparatus including an input unit including a pointing device and a display unit, and only an image file of a predetermined format according to a scenario file for sequentially displaying images for each page. A computer-readable recording medium that records a computer program for creating the scenario file supplied to the scenario reproducing device capable of reproducing the program, and for causing the display unit to execute processing on the display unit When a file icon of a material file in a predetermined format including scenario information and image information for each page is dragged and dropped to the execution icon by the function of displaying the execution icon and the operation of the pointing device, Based on the scenario information, Create a yl, it records a computer program for realizing a function of generating an image file of the predetermined format, to the computer on the basis of the image information.

  If the computer executes the computer program recorded on this recording medium, a scenario file and an image file of a predetermined format can be easily created using a material file of a predetermined format as in the method of the present invention. It becomes.

  The above-described invention can be implemented in various modes such as a computer program for realizing the function of the scenario creation device, a recording medium recording the computer program, a data signal including the computer program and embodied in a carrier wave, and the like. Can be realized.

  An apparatus according to a fourth aspect of the present invention is a scenario creation apparatus for creating a scenario file for sequentially displaying an image for each page, and includes an input unit including a pointing device, a display unit, and the input unit A scenario creation unit for creating the scenario file according to the operation of the above, and the scenario creation unit is selected by the user in the file management area for displaying the material file on the display unit and in the file management area A scenario file creation area including a selected material file information area that displays selected material file information that is information of the selected material file in an order specified by the user, and displays the content in the selected material file information area. In response, the scenario file is created.

  In this way, a scenario file can be easily created simply by displaying the selected material file information in the selected material file information area in a desired order. If the scenario file created in this way is supplied to a scenario playback device such as a projector, images for each page can be easily displayed sequentially.

  In the scenario creation device, the scenario creation unit is preferably capable of creating the scenario file that specifies a plurality of material files. In this way, a scenario file can be easily created even when a plurality of types of material files are used.

  In the scenario creation apparatus, the selected material file information may be created by dragging and dropping a file icon of a material file displayed in the file management area into the selected material file information area by operating the pointing device. By doing so, it is preferably displayed in the selected material file information area. In this way, it is possible to easily create a scenario file simply by operating a pointing device.

  In the scenario creation apparatus, the selected material file information may include page designation information for designating a page in the selected material file. In this way, it is possible to create a scenario file using only a desired page even when the material file has a plurality of pages.

  In the scenario creation apparatus, the scenario creation area further includes a page of the image information for each page for a material file in a predetermined format including scenario information and image information for each page displayed in the file management area. Each of the selected material file information including the page designation information includes a reduced image display area that is displayed as a reduced image for each page. The reduced image for each page displayed in the reduced image display area by the operation of the pointing device Is preferably displayed in the selected material file information area by being dragged and dropped to the selected material file information area. As described above, if the reduced image is displayed, the contents of the image for each page can be easily confirmed. Therefore, it is possible to easily create a scenario file only by operating the pointing device.

  Further, in the scenario creation device, a network interface unit for connecting to a network is provided, the scenario creation unit selects a material file stored in another external device connected to the network, A scenario file may be created. This makes it possible to easily create a scenario file using a material file that is not prepared in the scenario creation device.

  The scenario creation device further includes a scenario supply unit for supplying the scenario file created by the scenario creation unit to a scenario playback device, wherein the scenario supply unit creates the scenario file. The selected material file may not be supplied to the scenario playback device. In this way, since the material file is not stored in the scenario playback device, the memory capacity in the scenario playback device can be made relatively small. At this time, the scenario reproducing device may read the material file from another external device or the like when executing the scenario file.

  An apparatus according to a fifth aspect of the present invention is a projector that projects and displays an image according to a scenario file for sequentially displaying an image for each page, and reads and projects a material file according to the scenario file stored in a memory. A page image processing unit that prepares page image data representing an image for each displayed page, an electro-optical device that forms image light in accordance with the page image data, and image light obtained by the electro-optical device is projected A projection optical system, wherein the page image processing unit prepares the page image data based on the material files in a plurality of formats.

  Since the projector includes a page image processing unit that can prepare page image data based on a plurality of format material files, it is possible to omit the trouble of specially preparing an image file of a predetermined format. As a result, the projector can easily and sequentially display images for each page.

  Furthermore, the projector includes a network interface unit for connecting to a network, and the page image processing unit stores a material file stored in another external device connected to the network via the network interface unit. May be read according to the scenario file. In this way, since the projector does not need to store the material file stored in another external device, the memory capacity in the projector can be made relatively small.

  Further, the projector may include a scenario supply device for supplying the scenario file to the memory.

  In the projector described above, the scenario supply device includes an input unit including a pointing device, a display unit, and a scenario supply unit for supplying the prepared scenario file to the memory. When the execution icon for causing the scenario supply unit to execute processing is displayed on the display unit and the file icon of the scenario file is dragged and dropped onto the execution icon by the operation of the pointing device The scenario file is preferably supplied to the memory. If such a scenario supply device is provided, it is possible to easily supply the scenario file to the memory simply by operating the pointing device.

  In the projector described above, the scenario supply device further includes an operation information generation unit that detects an operation of the pointing device by a user and generates operation information based on a detection result, and the operation information generation unit includes the scenario When the supply unit supplies the scenario file to the memory, an operation information generation area, which is an area for generating operation information associated with the operation of the pointing device, is displayed, and the pointing device is displayed in the operation information generation area. Only when the corresponding pointer image is displayed, the operation information accompanying the operation of the pointing device is generated and supplied to the page image processing unit, and the page image processing unit is configured to output the operation information according to the supplied scenario file. In addition to preparing page image data, There are, by combining the said page image data and embellishment image data, may be superimposed the decoration image represented by the embellishment image data in a predetermined position in a page image represented by the page image data. In this way, the page image processing unit can easily superimpose the decoration image on the page image prepared according to the scenario file based on the operation information.

  In the projector described above, the page image processing unit may automatically start processing according to the scenario file when the scenario file is supplied to the memory.

  An apparatus according to a sixth aspect of the present invention is a projector for projecting and displaying an image, a material file supply device for supplying a material file including scenario information and image information for each page, and the material file supply device A page image processing unit that reads out the material file stored in the memory and prepares page image data representing an image for each page represented by the image information according to the scenario information; and And a projection optical system that projects the image light obtained by the electro-optical device, the material file supply device including an input unit including a pointing device, and a display unit And a material file supply unit for supplying the material file to the memory, the material file supply unit The execution icon for causing the material file supply unit to execute processing is displayed on the display unit, and the file icon of the material file is dragged and dropped onto the execution icon by the operation of the pointing device. Then, the material file is supplied to the memory.

  Since this projector includes a page image processing unit that can prepare a page image data representing an image for each page using a material file in a predetermined format as it is, it is possible to omit the trouble of creating a scenario file. it can. As a result, the projector can easily and sequentially display images for each page.

  In the projector, the material file supply device further includes an operation information generation unit that detects an operation of the pointing device by a user and generates operation information based on a detection result, and the operation information generation unit includes the operation information generation unit, When the material file supply unit supplies the material file to the memory, an operation information generation area, which is an area for generating operation information associated with an operation of the pointing device, is displayed, and the pointing information is displayed in the operation information generation area. Only when the pointer image corresponding to the device is displayed, the operation information accompanying the operation of the pointing device is generated and supplied to the page image processing unit, and the page image processing unit supplies the material file supplied The page image data is prepared using the There are, by combining the said page image data and embellishment image data, may be superimposed the decoration image represented by the embellishment image data in a predetermined position in a page image represented by the page image data. In this way, the page image processing unit can easily superimpose the decoration image on the page image prepared using the material file based on the operation information.

  In the projector, the page image processing unit may automatically start processing according to the scenario information of the material file when the material file is supplied into the memory.

  A method according to a seventh aspect of the present invention is a scenario creation method for creating a scenario file for sequentially displaying an image for each page in a scenario creation apparatus including an input unit including a pointing device and a display unit. (A) On the display unit, a file management area for displaying a material file and selected material file information that is information on a material file selected by the user in the file management area are designated by the user. A step of displaying a scenario file creation area including a selected material file information area to be displayed in order; and (b) a step of creating the scenario file in accordance with display contents in the selected material file information area. It is characterized by providing.

  When this method is used, the same operation and effect as when the scenario creation device of the present invention is used, and the scenario file can be easily displayed by simply displaying the selected material file information in the desired material file information area in the desired order. Can be created. Further, if the scenario file created in this way is supplied to a scenario playback device such as a projector, images for each page can be easily displayed sequentially.

  A recording medium according to an eighth aspect of the present invention is a computer program for creating a scenario file for sequentially displaying an image for each page in a scenario creation device including an input unit including a pointing device and a display unit A file management area for displaying a material file on the display unit, and selected material file information that is information on a material file selected by the user in the file management area A function for displaying a scenario file creation area including a selected material file information area for displaying the selected material file information area in the order specified by the user, and a function for creating the scenario file according to the display contents in the selected material file information area And a computer To record over data program.

  If the scenario creation device executes the computer program recorded on this recording medium, the scenario file can be easily displayed just by displaying the selected material file information in the selected material file information area in the desired order as in the method of the present invention. Can be created. Further, if the scenario file created in this way is supplied to a scenario playback device such as a projector, images for each page can be easily displayed sequentially.

  The above invention includes a computer program for realizing at least one of the function of the scenario creation device and the function of the scenario playback device (projector), a recording medium recording the computer program, and including the computer program in a carrier wave. The present invention can be realized in various modes such as a data signal embodied in FIG.

  An apparatus according to a ninth aspect of the present invention is an image display system in which a file server for storing a data file, a projector, and a computer are connected to each other via a network, and the computer inputs data and a command. A request to transfer a desired data file from the data file storage means to the file server is generated via the input means; and an input means for storing the data file to be displayed by the projector. And a transfer request determination means for determining whether or not the data file transfer request has occurred, and an index file that includes the transfer destination information of the data file and has a smaller file size than the data file. Index file generation means for generating Sending means for sending the data file and the index file to the file server and the projector, respectively, wherein the projector receives and stores the transferred index file, and stores the index file. A determination screen generation means for generating a data file determination screen for determining a data file to be displayed using an index file stored in the apparatus, and a data file determined via the data file determination screen Based on the transfer destination information included in the index file, the file server is specified, transfer request means for requesting transfer of the data file, and a projection table for receiving and projecting the data file that has requested the transfer. Characterized in that it comprises a means.

  According to this image display system, the data file can be reproduced by the projector alone without requiring a storage device having a large storage capacity on the projector side when transferring the data file. In addition, the data file can be transferred and reproduced by remote operation without being aware of the network.

  In the above image display system, the transfer destination information may include a transfer location and a file name of the data file. The index file may include file name and password information in addition to the transfer destination information. By providing such a configuration, the convenience of the index file can be improved. Further, the transfer request means of the projector further requests input of a password, and when the input password matches the password information, transfers the determined data file to the file server. You may request. When such a configuration is provided, unauthorized access by a third party to the data file can be prevented.

  In the image display system, the computer further includes a display screen device that displays a list of data files stored in the data file storage unit and an icon of the projector, and the transfer request determination unit includes: When the icon of the desired data file is dragged and dropped from the list of stored data files on the display screen of the display screen device to the icon of the projector, it is determined that a transfer request has occurred. May be. When such a configuration is provided, the data file transfer operation can be executed visually, and the data file transfer operation can be simplified.

  A method according to a tenth aspect of the present invention is a method for transferring a data file generated by a computer, determining a data file to be transferred, and determining whether or not a transfer request for the determined data file has occurred. If it is determined that a transfer request for the determined data file has occurred, an index file including the storage location information of the determined data file and having a smaller file size than the data file is generated and the determined The data file is transferred to a storage device as a storage destination, and the index file is transferred to the projector.

  According to this data file transfer method, a data file can be transferred without requiring a storage device having a large storage capacity on the projector side.

  The data file transfer method according to the tenth aspect of the present invention can be variously modified and improved in the same manner as the ninth aspect of the present invention.

  A method according to an eleventh aspect of the present invention is a method for displaying a data file on a projector based on an index file that includes data file storage location information and has a smaller file size than the data file. The data file desired to be displayed is determined, the storage location of the determined data file is specified based on the corresponding index file, and the determined data file is stored for the storage destination having the specified storage location. Transfer, and the received data file is received and projected and displayed.

  According to this data file display method, a data file having a large file size can be handled without depending on the storage capacity of the storage device on the projector side. In addition, since the storage location (storage destination) of the data file is specified using the index file, the data file transfer and display processing can be executed by remote operation without being aware of the network.

  The data file display method according to the eleventh aspect of the present invention can be variously changed and improved in the same manner as the ninth aspect of the present invention.

  An apparatus according to a twelfth aspect of the present invention is a projector that obtains a data file to be displayed via a network from a file server that stores a data file, the input means for inputting data and commands, and the data file Index file storage means for storing an index file having a file size smaller than the data file and a selection screen generation means for generating a data file selection screen associated with the index file; Transfer that specifies the storage location of the selected data file using the storage location information included in the index file corresponding to the data file selected via the selection screen, and requests transfer of the selected data file Request means, and And a projection display means for projecting and displaying said selected data file acquired via the network, characterized in that it comprises a.

  According to this projector, a data file having a large file size can be handled without depending on the storage capacity of the storage device on the projector side. In addition, since the storage location of the data file is specified using the index file, the data file transfer and display processing can be executed by remote operation without being aware of the network.

  An apparatus according to a thirteenth aspect of the present invention is an apparatus for transferring a data file via a network to which a projector and a file server are connected, the input means for inputting data and commands, and the data file A data file storing means for storing; a transfer request determining means for determining whether or not a transfer request for a desired data file is inputted among the data files stored in the data file storing means via the input means; If it is determined that a transfer request has been input, reference file generation means for generating a reference file that includes storage location information of the desired data file and has a smaller file size than the data file, and the desired data file And the reference file as the file server and the program. Characterized in that it comprises a sending means for sending each Kuta, a.

  According to this data file transfer device, a data file having a large file size can be transferred regardless of the storage capacity of the storage device on the projector side. In addition, since the data file storage destination can be specified by the index file, the data file can be operated in the same manner as when the data file is transferred to the projector side by transferring the index file to the projector side. it can.

  The data file transfer apparatus according to the thirteenth aspect of the present invention can be further modified and improved in the same manner as the ninth aspect of the present invention.

  A recording medium according to a fourteenth aspect of the present invention is a computer-readable medium for storing a program for executing a computer-generated data file, which is executed on a computer, wherein the program is data to be transferred. A step of determining a file; a step of determining whether a transfer request for the determined data file has occurred; and a step of determining whether a transfer request for the determined data file has occurred. Generating an index file including a storage location information and a file size smaller than the data file, transferring the determined data file to a storage device as a storage destination, and transferring the index file to the projector And providing a step And features.

  According to this computer-readable medium, the same effect as that of the tenth aspect of the present invention can be obtained.

  A recording medium according to a fifteenth aspect of the present invention is a computer-readable program that stores a program for displaying a data file on a projector based on an index file that includes data file storage location information and is smaller in file size than the data file. Determining a data file desired to be displayed using the index file, and determining a storage location of the determined data file based on the corresponding index file; And a step of requesting the storage destination having the determined storage location to transfer the determined data file, and a step of receiving and projecting the determined data file.

  According to this computer-readable medium, the same effect as that of the eleventh aspect of the present invention can be obtained.

  In each aspect of the present invention, the storage location is a unique storage location where each data file is stored, and each data file is specified (identified) by specifying the storage location based on the storage location information. be able to.

A. First embodiment:
Next, embodiments of the present invention will be described based on examples. FIG. 1 is an explanatory diagram showing a scenario creation / playback system to which the present invention is applied. This scenario creation / playback system includes a computer PC1 having functions as a scenario creation device and a scenario supply device, and a projector (that is, a projection display device) PJ1 having a function as a scenario playback device. Computer PC1 and projector PJ1 are connected by a USB cable.

  Note that the projector PJ1 of the present embodiment can reproduce an image file of a predetermined format according to the scenario file. However, the format of the image file that the projector PJ1 reproduces is only one format. For this reason, the computer PC1 of the present embodiment creates a scenario file SF and a predetermined format image file PF, and supplies them to the projector PJ1. The projector PJ1 displays a page image ORG corresponding to the image file PF having a predetermined format on the screen SC in accordance with the supplied scenario file SF.

  FIG. 2 is an explanatory diagram showing a schematic configuration of the computer PC1 of FIG. The computer PC1 includes a CPU 300, an external storage device 310, a ROM 320, a RAM 330, a display unit 350, an input unit 360 such as a mouse MS or a keyboard KB, and a USB interface unit 380.

  In the RAM 330, a scenario creation program for realizing the function of the scenario creation unit 332A is stored. The scenario creation unit 332A has a function of creating a scenario file SF for sequentially displaying images for each page and an image file PF used during scenario reproduction. However, since the projector PJ1 of the present embodiment can reproduce only the image file PF in a predetermined format according to the scenario file SF, the scenario creation unit 332A generates the image file PF in a predetermined format. Further, the scenario creation unit 332A has a function of supplying the created scenario file SF and image file PF to the projector PJ1 via the USB interface unit 380. That is, the scenario creation unit 332A and the USB interface unit 380 have a function as a scenario supply unit that supplies the scenario file SF to the projector PJ1.

  The computer program that realizes the function of the scenario creation unit 332A is provided in a form recorded on a computer-readable recording medium such as a flexible disk or a CD-ROM. The computer reads the computer program from the recording medium and transfers it to an internal storage device or an external storage device. Or you may make it supply a computer program to a computer via a communication path. When realizing the function of the computer program, the computer program stored in the internal storage device is executed by the microprocessor of the computer. Further, the computer program recorded on the recording medium may be read by the computer and directly executed.

  In this specification, the computer is a concept including a hardware device and an operation system, and means a hardware device that operates under the control of the operation system. Further, when an operation system is unnecessary and a hardware device is operated by an application program alone, the hardware device itself corresponds to a computer. The hardware device includes at least a microprocessor such as a CPU and means for reading a computer program recorded on a recording medium. The computer program includes program code for causing such a computer to realize the functions of the above-described means. Note that some of the functions described above may be realized by an operation system instead of an application program.

  The “recording medium” in the present invention includes a flexible disk, a CD-ROM, a DVD, a magneto-optical disk, an IC card, a ROM cartridge, a punch card, a printed matter on which a code such as a barcode is printed, and an internal storage device of a computer. Various types of computer-readable media such as (memory such as RAM and ROM) and external storage devices can be used.

  FIG. 3 is an explanatory diagram showing a schematic configuration of the projection display apparatus of FIG. 1, that is, the projector PJ1. The projector PJ1 includes a CPU 100, an external storage device 102, an internal storage device 104 such as a ROM or a RAM, an analog image signal input unit 108, an image processing unit 110, a liquid crystal light valve driving unit 120, and a liquid crystal light valve 130. A decoration image processing unit 140, a menu image processing unit 150, a remote control signal processing unit 160, a memory card control unit 170 for reading an image file stored in the memory card MC, and a USB interface unit 180. ing. The liquid crystal light valve 130 is illuminated almost uniformly by the illumination optical system 200, and the image light formed in the liquid crystal light valve 130 is projected on the screen SC by the projection optical system 220. In FIG. 3, the illustration of the optical systems 200 and 220 is simplified.

  The analog image signal input unit 108 has a function of AD-converting the analog image signal AV1 and outputting digital image data DV1 when the analog image signal AV1 is supplied from an external image supply device (not shown). is doing. As the analog image signal AV1, for example, an image signal such as an RGB signal representing a computer image supplied from a personal computer or a composite image signal representing a moving image supplied from a video recorder or a television receiver is supplied. .

  The image processing unit 110 has a function of generating synthesized image data obtained by synthesizing the supplied original image data and decoration image data. Thereby, an image in which a decoration image such as the pointer image PPJ represented by the decoration image data is superimposed on the original image ORG represented by the original image data can be displayed on the screen SC. The image processing unit 110 temporarily writes the supplied original image data in a frame memory (not shown) and combines the original image data and the decoration image data when reading the original image data written in the frame memory. The image data DV2 is supplied to the liquid crystal light valve driving unit 120.

  The original image data includes image data DV1 supplied from the analog image signal input unit 108, page image data for each page supplied from the internal storage device 104, menu image data supplied from the menu image processing unit 150, memory Image data read from the card MC and supplied from the memory card control unit 170 is used. On the other hand, the decoration image data supplied from the decoration image processing unit 140 is used as the decoration image data. Here, the decorative image means an image prepared independently of the original image, and is displayed on the screen SC by being superimposed on the original image.

  The liquid crystal light valve driving unit 120 generates the image display data SD according to the image data DV2 supplied from the image processing unit 110. The liquid crystal light valve 130 is driven by the image display data SD. At this time, the liquid crystal light valve 130 modulates light from the illumination optical system 200 to form image light representing an image.

  The decoration image processing unit 140 has a function of generating decoration image data representing a decoration image and supplying the decoration image data to the image processing unit 110. Specifically, the decoration image processing unit 140 is a pointer image data representing the pointer image PPJ, or an image having a specific shape created by specifying a range using the pointer image PPJ (for example, a pointing image) ) And a drawing image (for example, a box image and a frame image) are generated and supplied to the image processing unit 110.

  The menu image processing unit 150 has a function of generating menu image data representing a menu image and supplying it to the image processing unit 110. The user can make various settings related to the projector PJ1 according to the menu image.

  The USB interface unit 180 has a function of receiving the scenario file SF and the image file PF supplied from the computer PC1 and supplying them to the internal storage device 104 via the bus 100b.

  The internal storage device 104 includes a scenario reproducing unit 105A for reproducing the scenario file SF, and a scenario storage area 107 for storing the supplied scenario file SF and image file PF. The scenario reproducing unit 105A reads the image file PF according to the scenario file SF, and supplies the page image data for each page to the image processing unit 110 as original image data. However, the format of the image file read by the scenario reproducing unit 105A of the present embodiment is only one format, and this format is a predetermined format different from the format of the material file.

  In this embodiment, the scenario file SF and the image file PF supplied from the USB interface unit 180 are stored in the scenario storage area 107 in the internal storage device 104. However, the external storage device 102 and the memory card control unit It may be stored in the memory card MC mounted on 170. Further, the scenario file SF and the image file PF may be written in the memory card MC in the computer PC1 without using the USB interface unit 180. In this case, the memory card MC may be attached to the memory card control unit 170 and the scenario file SF and the image file PF may be read from the memory card MC.

  Remote control signal processor 160 controls the function of each part of projector PJ1 based on a control signal from remote controller RM. For example, the remote control signal processing unit 160 can control the function of the decoration image processing unit 140 based on a control signal from the remote control RM, and can superimpose the pointer image PPJ on a desired position in the original image ORG.

  FIG. 4 is a flowchart showing a series of processing procedures in the scenario creation / reproduction system of FIG. Note that steps S101 to S106 show processing of the computer PC1, and step S107 shows processing of the projector PJ1.

  In step S101, an execution icon for causing the scenario creation unit 332A to execute processing is displayed on the display unit 350 (FIG. 2) of the computer PC1. FIG. 5 is an explanatory diagram showing a desktop screen displayed on the display unit 350. As illustrated, the desktop screen includes an execution icon EI for causing the scenario creation unit 332A to execute processing.

  In step S102, the user operates the mouse MS (FIG. 2) of the input unit 360 to drag and drop the file icon FI of the material file in a predetermined format onto the execution icon EI as shown in FIG. .

  Here, the material file in a predetermined format means a material file including scenario information and image information for each page. In this embodiment, a PPT format generated using PowerPoint (a trademark of Microsoft Corporation). File (hereinafter also referred to as “PPT file”).

  The drag-and-drop process means a process of dragging an icon with the mouse pointer and overlaying the icon on another icon or the like. Specifically, the drag-and-drop process in step S102 means the following series of processes. That is, the file icon FI is moved by dragging the mouse pointer PPC to the file icon FI displayed on the display unit 350, pressing a switch provided on the mouse MS, and moving the mouse MS while pressing the switch (drag processing). . Then, the file icon FI is superimposed on the execution icon EI, and the mouse MS switch is released (drop process).

  In step S103, the scenario creation program is activated by the drag-and-drop process in step S102. At this time, the program stored in the external storage device 310 (FIG. 2) of the computer PC1 is expanded in the RAM 330 and functions as the scenario creation unit 332A.

  In step S104, scenario creating unit 332A causes display unit 350 to display a dialog box (not shown) for setting a supply destination to which the created scenario file is to be supplied. In this embodiment, the user sets the projector PJ1 (FIG. 2) connected via the USB interface unit 380 as the scenario file supply destination.

  In step S105, the scenario creation unit 332A creates a scenario file SF based on the scenario information for each page included in the material file (PPT file) in a predetermined format, and the image file in the predetermined format based on the image information for each page. Create Here, the image file in a predetermined format means an image file in a format suitable for the projector PJ1 which is a scenario playback device. In this embodiment, the image file in the JPEG format (hereinafter also referred to as “JPEG file”). ) Is assumed.

  In step S106, the scenario creation unit 332A supplies the scenario file SF and image file PF created in step S105 to the projector PJ1 via the USB interface unit 380. As described above, in this embodiment, the scenario file SF and the image file PF are stored in the scenario storage area 107 (FIG. 3) in the internal storage device 104 of the projector PJ1.

  In step S107, the projector PJ1 executes processing according to the supplied scenario file SF. At this time, the user uses the remote control RM to display a selection screen for selecting a desired scenario file from a plurality of scenario files stored in the internal storage device 104 of the projector PJ1, and selects the desired scenario file. To do. FIG. 6 is an explanatory diagram showing a scenario file selection screen SSM displayed by the projector PJ1. The scenario file selection screen SSM is generated on the screen SC by the menu image processing unit 150 generating image data representing the scenario file selection screen and supplying it to the image processing unit 110 in accordance with a command from the remote control signal processing unit 160. Is displayed. The user selects a desired scenario file by using the remote controller RM on the scenario file selection screen SSM. In the scenario file selection screen SSM of FIG. 6, “scenario file B” is selected.

  When a scenario file is selected on the scenario file selection screen SSM, the scenario playback unit 105A in the internal storage device 104 selects the image file PF stored in the scenario storage area 107 in accordance with the scenario file SF in the scenario storage area 107. The image data is sequentially read and page image data for each page is supplied to the image processing unit 110 as original image data. As a result, the projector PJ1 can sequentially project and display images on the screen SC for each page.

  In this embodiment, after the scenario file is selected on the scenario file selection screen SSM (FIG. 6), processing according to the scenario file is executed. The process according to the scenario file SF may be executed simultaneously with the supply of the PF.

  FIG. 7 is an explanatory diagram showing an example of the contents of the scenario file supplied to the projector PJ1. Note that the symbol “L1” and the like attached to the right side of FIG. 7 is a symbol for convenience indicating the line number, and is not included in the actual scenario file. “Begin” of the line number L1 and “end” of the line number L17 are commands that mean the start and end of the process according to the scenario file, respectively. In practice, the process is executed according to the commands of the line numbers L2 to L16. Is done.

  The “Display” command included in the line numbers L2, L4, L6, L9, L11, L13, and L15 of the scenario file SF1 reads the following JPEG files such as “Page1.jpg”, “Page2.jpg”,. This is a command for projecting and displaying an image. Note that the images for each page included in the material file (PPT file) selected in step S102 (FIG. 4) are projected and displayed in page order by the processing of line numbers L2, L4, L6, L9, L11, L13, and L15. Will be.

  The “Pause” command included in the line numbers L3, L5, and L8 of the scenario file SF1 is a command for maintaining the immediately preceding process until there is an input from the user. For example, when the image is projected and displayed at the line number L2, the image specified by the line number L2 is displayed until the user instructs to move to the next process with the remote controller RM or the like. Thereby, the user can switch the projected and displayed image for each page at a desired timing.

  By the way, in PowerPoint (trademark of Microsoft Corporation), it is possible to combine sound with the image of each page and set the display time of the image of each page. For this reason, the scenario information of the PPT file may include audio information and display time information for each page. The scenario creation unit 332A of the present embodiment can create a scenario file in accordance with such scenario information. Note that the scenario creation unit 332A creates an audio file and supplies it to the projector PJ1 when audio data is included in the PPT file.

  The “Play” command included in the line number L7 of the scenario file SF1 (FIG. 7) is a command created based on the audio information included in the scenario information of the PPT file. The “Play” command is a command for reading the audio file “Wave1.wav” that follows and reproducing the audio. As a result, it is possible to project and display an image and to reproduce sound such as sound effects and explanations of contents, so that presentation can be performed effectively. Note that the sound is output from a speaker (not shown) in the projector PJ1.

  The “Wait” command included in the line numbers L10, L12, L14, and L16 of the scenario file SF1 is a command created based on the display time information included in the scenario information of the PPT file. The “Wait” command is a command for maintaining the immediately preceding process for a specified time. For example, when an image is displayed at line number L9, the image is displayed only for “10000 msec” following the “Wait” command, and then the process proceeds to the next line number L11. As a result, it is possible to automatically page the projected image.

  As described above, in step S107, the projector PJ1 reads the supplied image file (JPEG file) according to the scenario file SF1 as shown in FIG. 7, and sequentially projects and displays the image for each page.

  As described above, the computer PC1 of this embodiment includes the scenario creation unit 332A and functions as a scenario creation device. The scenario creation unit 332A causes the display unit 350 to display an execution icon EI for causing the scenario creation unit 332A to execute a process, and in a predetermined format including scenario information and image information for each page by operating the mouse MS. When the file icon FI of the material file (PPT file) is dragged and dropped onto the execution icon EI, a scenario file SF is created based on the scenario information, and an image file (JPEG file) of a predetermined format is created based on the image information. ) Generate PF.

  By using such a scenario creation device PC1, it is possible to easily create a scenario file and a predetermined format image file using a material file in a predetermined format. Further, if such a scenario file and an image file of a predetermined format are supplied to a scenario playback device such as a projector PJ1 capable of playing back only the image file of the predetermined format, the images for each page can be easily displayed sequentially. It becomes possible.

A-1. Modification of the first embodiment:
In the above embodiment, the computer PC1 includes the mouse MS as the input unit 360. However, instead of the mouse MS, the computer PC1 may include other pointing devices such as a tablet, a trackball, a trackpad, and a joystick. Good. These pointing devices also have the same function as the mouse MS and correspond to the pointing device in the present invention.

  In the above embodiment, a JPEG file has been described as an image file of a predetermined format to be reproduced by the projector PJ1. However, a GIF file or a TIFF file may be used instead of the JPEG file. That is, any image file having a format different from the material file format may be used.

B. Second embodiment:
Next, embodiments of the present invention will be described based on examples. FIG. 8 is an explanatory diagram showing a scenario creation / reproduction system in the second embodiment. This scenario creation / playback system includes a computer PC2 having functions as a scenario creation device and a scenario supply device, and a projection display device having a function as a scenario playback device, that is, a projector PJ2. The computer PC2 and the projector PJ2 are connected to each other via a network NW. In this scenario creation / playback system, a file server SB is connected on the network NW. In this embodiment, a LAN is assumed as the network NW.

  Note that the projector PJ2 of the present embodiment can reproduce material files in a plurality of formats according to the scenario file. For this reason, the computer PC2 of this embodiment creates only the scenario file SF and supplies it to the projector PJ2. The material file MF stored in the computer PC2 is supplied to and stored in the projector PJ2 and the file server SB. The projector PJ2 reads the material file MF stored in the projector PJ2 or the file server SB in accordance with the supplied scenario file SF, and displays a page image ORG corresponding to the material file MF on the screen SC.

  In the present specification, “page” means a presentation sheet (slide) that is individually displayed based on a specified order. The “page image” means an image represented by a presentation sheet, and each page image includes characters, designs, and the like. The image for each page displayed on the screen SC or the like may be a whole image representing one whole page image or a partial image representing a part of one page image.

  FIG. 9 is an explanatory diagram showing a schematic configuration of the computer PC2 of FIG. The computer PC2 includes a CPU 300, an external storage device 310, a ROM 320, a RAM 330, a display unit 350, an input unit 360 such as a mouse MS or a keyboard KB, and a network interface unit 390. The computer PC2 is connected to the projector PJ2 via the network interface unit 390.

  In the RAM 330, a scenario creation program for realizing the function of the scenario creation unit 332B is stored. The scenario creation unit 332B has a function of creating a scenario file SF by combining a plurality of material files in a plurality of formats.

  The scenario creation unit 332B has a function of supplying the scenario file SF to the projector PJ2 via the network interface unit 390. That is, the scenario creation unit 332B and the network interface unit 390 of this embodiment have a function as a scenario supply unit that supplies the scenario file SF to the projector PJ2. Further, the scenario creation unit 332B has a function of supplying the material file MF to the projector PJ2 and the file server SB via the network interface unit 390.

  The computer program that realizes the function of the scenario creation unit 332B is provided in a form recorded on a computer-readable recording medium such as a flexible disk or a CD-ROM. The computer reads the computer program from the recording medium and transfers it to an internal storage device or an external storage device. Or you may make it supply a computer program to a computer via a communication path. When realizing the function of the computer program, the computer program stored in the internal storage device is executed by the microprocessor of the computer. Further, the computer program recorded on the recording medium may be read by the computer and directly executed.

  In this specification, the computer is a concept including a hardware device and an operation system, and means a hardware device that operates under the control of the operation system. Further, when an operation system is unnecessary and a hardware device is operated by an application program alone, the hardware device itself corresponds to a computer. The hardware device includes at least a microprocessor such as a CPU and means for reading a computer program recorded on a recording medium. The computer program includes program code for causing such a computer to realize the functions of the above-described means. Note that some of the functions described above may be realized by an operation system instead of an application program.

  The “recording medium” in the present invention includes a flexible disk, a CD-ROM, a DVD, a magneto-optical disk, an IC card, a ROM cartridge, a punch card, a printed matter on which a code such as a barcode is printed, and an internal storage device of a computer. Various types of computer-readable media such as (memory such as RAM and ROM) and external storage devices can be used.

  FIG. 10 is an explanatory diagram showing a schematic configuration of the projector PJ2 of FIG. The projector PJ2 includes a CPU 100, an external storage device 102, an internal storage device 104 such as a ROM or a RAM, an analog image signal input unit 108, an image processing unit 110, a liquid crystal light valve driving unit 120, and a liquid crystal light valve 130. A decoration image processing unit 140, a menu image processing unit 150, a remote control signal processing unit 160, a memory card control unit 170 for reading an image file stored in the memory card MC, and a network interface unit 190. ing. The liquid crystal light valve 130 is illuminated almost uniformly by the illumination optical system 200, and the image light formed in the liquid crystal light valve 130 is projected on the screen SC by the projection optical system 220. In FIG. 10, the illustration of the optical systems 200 and 220 is simplified.

  The analog image signal input unit 108 has a function of AD-converting the analog image signal AV1 and outputting digital image data DV1 when the analog image signal AV1 is supplied from an external image supply device (not shown). is doing. As the analog image signal AV1, for example, an image signal such as an RGB signal representing a computer image supplied from a personal computer or a composite image signal representing a moving image supplied from a video recorder or a television receiver is supplied. .

  The image processing unit 110 has a function of generating synthesized image data obtained by synthesizing the supplied original image data and decoration image data. Thereby, an image in which a decoration image such as the pointer image PPJ represented by the decoration image data is superimposed on the original image ORG represented by the original image data can be displayed on the screen SC. The image processing unit 110 temporarily writes the supplied original image data in a frame memory (not shown) and combines the original image data and the decoration image data when reading the original image data written in the frame memory. The image data DV2 is supplied to the liquid crystal light valve driving unit 120.

  The original image data includes image data DV1 supplied from the analog image signal input unit 108, page image data for each page supplied from the internal storage device 104, menu image data supplied from the menu image processing unit 150, memory Image data read from the card MC and supplied from the memory card control unit 170 is used. On the other hand, the decoration image data supplied from the decoration image processing unit 140 is used as the decoration image data. Here, the decorative image means an image (additional image) prepared independently of the original image, and is displayed on the screen SC by being superimposed (added) in the original image.

  The liquid crystal light valve driving unit 120 generates the image display data SD according to the image data DV2 supplied from the image processing unit 110. The liquid crystal light valve 130 is driven by the image display data SD. At this time, the liquid crystal light valve 130 modulates light from the illumination optical system 200 to form image light representing an image.

  The decoration image processing unit 140 has a function of generating decoration image data representing a decoration image and supplying the decoration image data to the image processing unit 110. Specifically, the decoration image processing unit 140 is a pointer image data representing the pointer image PPJ, or an image having a specific shape created by specifying a range using the pointer image PPJ (for example, a pointing image) ) And a drawing image (for example, a box image and a frame image) are generated and supplied to the image processing unit 110.

  The menu image processing unit 150 has a function of generating menu image data representing a menu image and supplying it to the image processing unit 110. The user can make various settings related to the projector PJ2 according to the menu image.

  The network interface unit 190 connects the projector PJ2 to the LAN, receives the scenario file SF supplied from the computer PC2 via the LAN and the material file MF used in the scenario file SF, and receives the internal storage device 104 via the bus 100b. It has the function to supply to.

  The internal storage device 104 includes a scenario reproducing unit 105B for reproducing the supplied scenario file SF, and a scenario storage area 107 for storing the scenario file SF and the material file MF supplied from the network interface unit 190. .

  In this embodiment, the scenario file SF and the material file MF supplied from the network interface unit 190 are stored in the scenario storage area 107 in the internal storage device 104. However, the external storage device 102 and the memory card control unit It may be stored in the memory card MC mounted on 170. Further, the scenario file SF and the image file PF may be written in the memory card MC in the computer PC2 without using the network interface unit 190. In this case, the memory card MC may be attached to the memory card control unit 170 and the scenario file SF and the image file PF may be read from the memory card MC.

  The scenario playback unit 105B can read a plurality of format material files MF created by a plurality of types of application programs. That is, the scenario playback unit 105B has a viewer function that allows the contents of a plurality of types of material files MF created by a plurality of types of application programs to be viewed. The scenario reproducing unit 105B reads the material file MF stored in the scenario storage area 107 or the file server SB in accordance with the scenario file SF, and supplies page image data for each page to the image processing unit 110 as original image data.

  Remote control signal processor 160 controls the function of each part of projector PJ2 based on a control signal from remote controller RM. For example, the remote control signal processing unit 160 can control the function of the decoration image processing unit 140 based on a control signal from the remote control RM, and can superimpose the pointer image PPJ on a desired position in the original image ORG.

  As can be seen from the above description, the CPU 100, the image processing unit 110, and the scenario reproduction unit 105B in the present embodiment correspond to the page image processing unit in the present invention.

  FIG. 11 is a flowchart showing a series of processing procedures in the scenario creation / reproduction system of FIG. Note that steps S201 to S205 show processing of the computer PC2, and step S206 shows processing of the projector PJ2.

  In step S201, an execution icon (not shown) for causing the scenario creation unit 332B to execute processing displayed on the display unit 350 of the computer PC2 is double-clicked with the mouse MS to start the scenario creation program. At this time, the program stored in the external storage device 310 (FIG. 9) of the computer PC2 is expanded in the RAM 330 and functions as the scenario creation unit 332B.

  In step S202, the scenario creation unit 332B causes the display unit 350 to display a scenario creation window.

  FIG. 12 is an explanatory diagram showing a scenario creation window SMW displayed on the display unit 350. As shown in the figure, the scenario creation window SMW includes a file management area MNA on the left side, a reduced image display area SPA on the lower right side, and a selected material file information area SFA on the upper right side.

  The file management area MNA includes a folder area A1 indicating a folder managed in a hierarchical structure, and a file area A2 indicating a file in the folder designated by the folder area A1. The user can designate a folder in which a desired material file is stored in the folder area A1, and can display a file icon of the desired material file in the file area A2.

  In the file management area MNA, file icons of material files stored in other external devices such as the file server SB connected to the network NW can be displayed.

  The reduced image display area SPA reduces the image information for each page for each page when the material file specified in the file management area MNA is a material file in a predetermined format including scenario information and image information for each page. This is an area to be displayed as an image. In the present embodiment, a PPT format file (hereinafter also referred to as “PPT file”) generated using PowerPoint (trademark of Microsoft Corporation) is assumed as the material file in the predetermined format. Thus, if a reduced image is displayed, the content of the image for each page can be easily confirmed.

  The selected material file information area SFA is an area for displaying material file information (selected material file information) selected by the user in the order designated by the user. The scenario creation unit 332B (FIG. 9) creates a scenario file according to the display content in the selected material file information area SFA.

  In step S203 of FIG. 11, the user selects a material file and displays information on the selected material file (selected material file information) in the selected material file information area SFA.

  Specifically, the user operates the mouse MS to select the file icon of the material file displayed in the file management area MNA, and drag and drop it in the selected material file information area SFA. Thereby, the selected material file information related to the material file selected by the user is displayed in the selected material file information area SFA.

  Alternatively, the user operates the mouse MS to select a reduced image for each page displayed in the reduced image display area SPA, and drag and drop the selected image in the selected material file information area SFA. This also displays the selected material file information related to the material file selected by the user in the selected material file information area SFA.

  Here, the drag-and-drop process means a process in which a mouse pointer is placed on an icon or the like and dragged, and the icon or the like is dropped on another icon or area. Specifically, the drag and drop process in step S203 means the following series of processes. In other words, the file is displayed by moving the mouse MS while keeping the switch provided on the mouse MS while the mouse pointer is aligned with the file icon displayed in the file management area MNA or the reduced image displayed in the reduced image display area SPA. Move icons and reduced images (drag processing). Then, the file icon and the reduced image are superimposed on the selected material file information area SFA, and the mouse MS switch is released (drop process).

  Note that selection of the file icon or reduced image of the material file can also be performed for a material file stored in another external device such as the file server SB connected to the network NW. Thereby, it is possible to select a material file stored in another external device and create a scenario file.

  The material file can be selected for material files in a plurality of formats. That is, the scenario creation unit 332B according to the present embodiment can create a scenario file using a plurality of formats of material files.

  By the way, as shown in the selected material file information area SFA of FIG. 12, each selected material file information includes the creator of the selected material file, the file name, page designation information for designating a page in the material file, A reduced page image representing the designated page. The page designation information is set when the user drags and drops the file icon of the material file displayed in the file management area MNA into the selected material file information area SFA. That is, when the user drags and drops the file icon of the material file into the selected material file information area SFA, the scenario creation unit 332B displays a dialog box (not shown), and the user displays a desired page in the dialog box. Is specified. On the other hand, when the user drags and drops the reduced image for each page displayed in the reduced image display area SPA into the selected material file information area SFA, the above dialog box is not displayed, and the page designation information is displayed. Is automatically included in the selected material file information.

  In the selected material file information area SFA, the selected material file information is displayed in the order designated by the user. The user can change the arrangement order of the selected material file information in the selected material file information area SFA. The arrangement order is changed by dragging and dropping a strip-shaped information display image IP on which each selected material file information is displayed.

  When the desired selected material file information is displayed in the desired order in the selected material file information area SFA as described above, a scenario file is created in step S204 (FIG. 11). At this time, the scenario creation unit 332B creates a scenario file according to the display contents in the selected material file information area SFA.

  In step S205, the created scenario file SF is supplied to the projector PJ2. In this embodiment, the projector PJ2 connected via the network NW is set in advance as the supply destination of the scenario file SF. Specifically, in the scenario creation window SMW of FIG. 12, the user displays a setting screen (not shown) for setting the supply destination to which the scenario file SF is to be supplied, and sets the supply destination on the setting screen. To do. The scenario creation unit 332B supplies the created scenario file SF to the projector PJ2 via the network NW.

  Further, the scenario creation unit 332B supplies the material file MF used in the scenario file SF to the projector PJ2 and the file server SB via the network NW. Specifically, when the scenario creation unit 332B creates a scenario file using the material file MF stored in the external storage device 310 of the computer PC2, the material file MF stored in the computer PC2 is used. Is supplied to the projector PJ2 and the file server SB. When the material file MF is supplied to the file server SB and not supplied to the projector PJ2, there is an advantage that the memory capacity of the external storage device 102 and the internal storage device 104 of the projector PJ2 can be made relatively small. In addition, when the scenario creation unit 332B creates a scenario file using the material file stored in the file server SB, the material file stored in the file server SB is not supplied to the projector PJ2.

  In step S206, the projector PJ2 executes processing according to the supplied scenario file. At this time, the user uses the remote control RM to display a selection screen for selecting a desired scenario file from a plurality of scenario files stored in the internal storage device 104 of the projector PJ2, and selects the desired scenario file. can do. FIG. 13 is an explanatory diagram showing a scenario file selection screen SSM displayed by the projector PJ2. The scenario file selection screen SSM is generated on the screen SC by the menu image processing unit 150 generating image data representing the scenario file selection screen and supplying it to the image processing unit 110 in accordance with a command from the remote control signal processing unit 160. Is displayed. The user selects a desired scenario file by using the remote controller RM on the scenario file selection screen SSM. In the scenario file selection screen SSM of FIG. 13, “scenario file B” is selected.

  When a scenario file is selected on the scenario file selection screen SSM, the scenario playback unit 105B in the internal storage device 104 reads the material file MF in accordance with the selected scenario file SF in the scenario storage area 107, and for each page. The page image data is supplied to the image processing unit 110 as original image data. The material file MF is read from the storage area specified by the scenario file SF. That is, when the material file MF is stored in the scenario storage area 107 of the projector PJ2, the scenario reproducing unit 105B reads the material file from the scenario storage area 107. When the material file MF is stored in the storage area in the file server SB, the scenario reproducing unit 105B reads the material file from the file server SB. As a result, the projector PJ2 can sequentially project and display images on the screen SC for each page.

  In this embodiment, after the scenario file is selected on the scenario file selection screen SSM (FIG. 13), the process according to the scenario file is executed, but the scenario file SF is supplied from the computer PC2 to the projector PJ2. At the same time, the process according to the scenario file SF may be automatically executed.

  FIG. 14 is an explanatory diagram showing an example of the contents of the scenario file supplied to the projector PJ2. Note that the symbol “L1” or the like attached to the right side of FIG. 14 is a symbol for convenience indicating the line number, and is not included in the actual scenario file. The “begin” of the line number L1 and the “end” of the line number L16 are commands that mean the start and end of the process according to the scenario file, respectively, and the process is actually executed according to the commands of the line numbers L2 to L15. Is done.

  The “Display” command included in the line numbers L2, L4, L6, L8, L10, L12, and L14 of the scenario file SF1 is a command for reading the subsequent material file and projecting and displaying an image. The “Display” command includes page specification information for specifying a page in the material file, as well as path information indicating the storage location (storage area) of the material file. Therefore, when the “Display” command is executed, only the corresponding page in the material file stored in the predetermined storage area is extracted and read out. As shown in FIG. 14, the scenario file of this embodiment is created by combining a plurality of format material files created by a plurality of types of application programs.

  For example, the projector PJ2 follows “Picture.ppt” stored in the scenario storage area 107 of the projector PJ2 according to “\ mem \ Picture.ppt / page1” following the “Display” command included in the line number L2 of the scenario file SF2. The first page of the file is extracted and read. Further, according to “\\ SB \ FLDA \ Document.doc / page2” following the “Display” command included in the line number L10, the “Document.doc” file stored in the folder “FLDA” of the file server “SB” is stored. Extract and read the second page. Further, according to “\\ SB \ FLDB \ Graph.xls / sheet3” following the “Display” command included in the line number L12, the “Graph.xls” file stored in the folder “FLDB” of the file server “SB” is stored. The third sheet (third page) is extracted and read.

  The “Pause” command included in the line numbers L3, L5, and L7 of the scenario file SF1 is a command for maintaining the immediately preceding process until there is an input from the user. For example, when the image is projected and displayed at the line number L2, the image specified by the line number L2 is displayed until the user instructs to move to the next process with the remote controller RM or the like. Thereby, the user can switch the image displayed by projection for each page at a desired timing.

  The “Wait” command included in the line numbers L9, L11, L13, and L15 of the scenario file SF1 is a command for maintaining the immediately preceding process for a specified time. For example, when an image is displayed at line number L8, the image is displayed only for “10000 msec” following the “Wait” command, and then the process proceeds to the next line number L10. As a result, it is possible to automatically page the projected image.

  The display time of each page image can be set in the scenario creation window SMW of FIG. Specifically, each information display image IP displaying each selected material file information in the selected material file information area SFA is selected to display a dialog box (not shown), and the display time of the image in the dialog box is set. Set.

  As described above, in step S206, the projector PJ2 reads a plurality of types of material files from the storage area in the projector PJ2 or the storage area such as the file server connected to the network NW according to the scenario file SF1 as shown in FIG. Images are projected and displayed sequentially for each page.

  As described above, the computer PC2 of this embodiment includes the scenario creation unit 332B and functions as a scenario creation device. The scenario creation unit 332B displays, on the display unit 350, a file management area MNA for displaying the material file and information on the material file selected by the user in the file management area MNA in the order specified by the user. For a material file (PPT file) of a predetermined format including the file information area SFA and the scenario information and image information for each page displayed in the file management area MNA, the image information for each page is a reduced image for each page. A scenario creation window SMW including a reduced image display area SPA to be displayed is displayed. Then, the scenario creation unit 332B creates a scenario file SF1 as shown in FIG. 14 according to the display contents in the selected material file information area SFA.

  By using such a scenario creation device PC2, it is possible to easily create a scenario file simply by displaying the selected material file information in the selected material file information area SFA in a desired order. If the scenario file created in this way is supplied to a scenario playback device such as the projector PJ2, images for each page can be easily displayed sequentially.

  Further, the projector PJ2 of the present embodiment includes a page image processing unit that reads a material file in accordance with the scenario file stored in the scenario storage area 107 and prepares page image data representing an image for each page to be projected and displayed. Yes. The page image processing unit can prepare the page image data based on a plurality of the material files. If such a projector PJ2 is used as a scenario reproducing device, the projector can easily display images for each page sequentially.

  In the present specification, the term “projector” means a narrow-sense projector including only the projector PJ2, and in some cases, a broad-sense projector including the projector PJ2 and the computer PC2. That is, in the second embodiment, the scenario reproduction system including the projector PJ2 as the scenario reproduction device and the computer PC2 as the scenario supply device also corresponds to the projector according to the fifth aspect of the present invention.

C. Third embodiment:
FIG. 15 is an explanatory diagram showing a scenario playback system in the third embodiment. This scenario reproduction system includes a computer PC3 having a function as a material file supply apparatus and a projection display apparatus having a function as a scenario reproduction apparatus, that is, a projector PJ3. The computer PC3 and the projector PJ3 are connected to each other via a network NW.

  Note that the projector PJ3 of the present embodiment can reproduce an image for each page by directly using a material file in a predetermined format including scenario information and image information for each page. For this reason, the computer PC3 of this embodiment supplies the material file MF of a predetermined format to the projector PJ3 as it is. The projector PJ3 reads the image information included in the material file MF according to the scenario information included in the supplied material file MF, and displays the page image ORG corresponding to the material file MF on the screen SC.

  Further, as shown in FIG. 15, the computer PC3 includes a mouse MS as a pointing device. As will be described later, the computer PC3 generates operation information OPS accompanying the operation of the mouse MS and supplies it to the projector PJ3 via the network NW. The projector PJ3 can display the pointer image PPJ in the page image ORG displayed on the screen SC, for example, based on the operation information OPS. In FIG. 15, the computer PC3 supplies the operation information OPS to the projector PJ3, and does not supply image data representing the pointer image PPJ.

  FIG. 16 is an explanatory diagram showing a schematic configuration of the computer PC3 of FIG. The computer PC3 has substantially the same configuration as the computer PC2 of FIG. 9, but the RAM 330 has a material file supply program for realizing the function of the material file supply unit 336 and the function of the operation information generation unit 338. And an operation information generation program for realizing the above.

  The material file supply unit 336 has a function of supplying a prepared material file of a predetermined format (for example, a PPT file) directly to the projector PJ3 via the network interface unit 390.

  The operation information generation unit 338 has a function of detecting an operation of the input unit 360 by the user and generating operation information OPS based on the detection result. The generated operation information OPS is supplied to the projector PJ3 via the network interface unit 390.

  FIG. 17 is an explanatory diagram showing a schematic configuration of the projector PJ3 of FIG. Since the projector PJ3 has substantially the same configuration as the projector PJ2 of FIG. 10, detailed description thereof is omitted.

  However, the network interface unit 190 has a function of supplying the material file MF supplied from the computer PC 3 via the LAN to the scenario storage area 107 of the internal storage device 104. Further, the network interface unit 190 has a function of supplying operation information OPS supplied from the computer PC3 via the LAN to the CPU 100 via the bus 100b. The CPU 100 controls the image processing unit 110, the decoration image processing unit 140, the menu image processing unit 150, and the like based on the operation information OPS. For example, when the operation information OPS includes position information indicating the position of the pointer image PPJ superimposed in the original image (page image) ORG, the decoration image processing unit 140 converts the pointer image data into the operation information. (Position information) Supplied to the image processing unit 110 based on OPS. Thereby, the image processing unit 110 can synthesize the original image data (page image data) and the pointer image data based on the operation information (position information) OPS. As a result, the original image (page image) ORG The pointer image PPJ is superimposed at a predetermined position.

  The internal storage device 104 includes a scenario playback unit 105C for playing back the supplied material file (PPT file) MF, and a scenario storage area 107 for storing the material file MF supplied from the network interface unit 190. ing. The scenario playback unit 105C has a viewer function that allows the contents of the material file MF in a predetermined format to be viewed. That is, the scenario reproducing unit 105C reads image information included in the material file MF according to the scenario information included in the supplied material file MF, and supplies page image data for each page to the image processing unit 110 as original image data. .

  Note that the CPU 100, the image processing unit 110, the decoration image processing unit 140, and the scenario reproduction unit 105C in the present embodiment correspond to the page image processing unit in the present invention.

  FIG. 18 is a flowchart showing a series of processing procedures in the scenario reproduction system of FIG.

  In step S301, an execution icon for causing the material file supply unit 336 to execute processing is displayed on the display unit 350 (FIG. 16) of the computer PC3. FIG. 19 is an explanatory diagram showing a desktop screen displayed on the display unit 350. As illustrated, the desktop screen includes an execution icon EI for causing the material file supply unit 336 to execute processing.

  In step S302, the user operates the mouse MS (FIG. 9) of the input unit 360 to drag and drop the file icon FI of the material file in a predetermined format onto the execution icon EI as shown in FIG. . Here, the material file in a predetermined format means a material file including scenario information and image information for each page. In this embodiment, a PPT file generated using PowerPoint (a trademark of Microsoft Corporation). Etc. are assumed. The drag-and-drop process means a process of dragging the mouse pointer PPC to the file icon FI of the material file and dragging it over the execution icon EI as described above.

  In step S303, the material file supply program is activated by the drag-and-drop process in step S302. At this time, the program stored in the external storage device 310 (FIG. 16) of the computer PC2 is expanded in the RAM 330 and functions as the material file supply unit 336.

  In step S304, the material file supply unit 336 causes the display unit 350 to display a dialog box (not shown) for setting a supply destination to which the material file is to be supplied. In this embodiment, the user sets the projector PJ3 (FIG. 16) connected via the network interface unit 390 as a material file supply destination. At this time, a resolution (for example, XGA) suitable for the projector PJ3 set as the supply destination is also set, and the set resolution is used for processing of the operation information generation unit 338.

  In step S305, the material file supply unit 336 supplies the material file as it is to the projector PJ3. Specifically, the material file supply unit 336 supplies the material file to the scenario storage area 107 in the internal storage device 104 of the projector PJ3 via the network interface unit 390. As in the second embodiment, the material file may be stored in the memory card MC or the like attached to the external storage device 102 or the memory card control unit 170.

  In step T301, the projector PJ3 automatically starts processing according to the scenario information of the material file at the same time as the material file is supplied. Specifically, the scenario playback unit 105C in the internal storage device 104 of the projector PJ3 performs image processing based on the scenario information for each page included in the material file (PPT file) in a predetermined format stored in the scenario storage area 107. Information is read, and page image data for each page is supplied to the image processing unit 110 as original image data. In this manner, the projector PJ3 sequentially projects and displays images according to the scenario information.

  When the material file supply unit 336 supplies the material file to the projector PJ3, the operation information generation program is activated in step S306. At this time, the operation information generation unit 338 displays an operation detection window including an operation information generation area on the display unit 350.

  FIG. 20 is an explanatory diagram showing an operation detection window DW displayed on the display unit 350 of the computer PC3. In the display unit 350 shown in FIG. 20, an operation detection window DW and a memo display window MW for displaying a memo describing contents to be presented in the presentation are displayed.

  As shown in the figure, the operation detection window DW includes a “menu” button BM and an operation information generation area GA. Here, the operation information generation area GA means an area for generating operation information OPS accompanying the operation of the mouse MS. In FIG. 20, the pointer image PPC corresponding to the mouse MS is displayed in the entire area of the display unit 350. However, only when the pointer image PPC is displayed in the operation information generation area GA, the mouse MS can be operated. Accompanying operation information OPS is generated. In this way, when the user displays the pointer image PPC in an area other than the operation information generation area GA and operates the mouse MS, the operation information OPS of the mouse MS is not generated. It is possible to perform other operations such as changing a memo displayed on the memo display window MW.

  In step S307, the operation information generation unit 338 detects the operation of the mouse MS as the input unit 360. The operation of the mouse MS means an operation of moving the mouse MS itself by the user, an operation of pressing a switch provided on the mouse MS, or the like. In step S308, the operation information generation unit 338 generates operation information OPS based on the detection result in step S307.

  As described above, the operation information generation unit 338 according to the present embodiment operates the mouse MS only when the pointer image PPC corresponding to the mouse MS is displayed in the operation information generation area GA of the operation detection window DW. To detect. In the present embodiment, in step S304, the projector PJ3 is set as the material file supply destination and the resolution suitable for the projector PJ3 is set, so that the projection is performed on the operation information generation area GA and the screen SC. The displayed original image (page image) ORG image area can be associated. That is, the positional relationship of the pointer image PPC in the operation information generation area GA and the positional relationship of the pointer image PPJ in the original image (page image) ORG can be substantially matched. Specifically, the operation information generation unit 338 obtains the position where the pointer image PPC is displayed in the operation information generation area GA as a coordinate value according to the set resolution (step S304) of the projector PJ3. If the resolution of the projector PJ3 is set to XGA (1024 × 768) and the pointer image PPC is displayed at the upper left corner of the operation information generation area GA, the coordinate value is (1, 1). If it is displayed at the center, the coordinate value is (512, 384), and if it is displayed at the lower right corner, the coordinate value is obtained as (1024, 768). This coordinate value information becomes position information of the mouse MS and is output as operation information OPS.

  In step S309, the computer PC3 transmits operation information OPS.

  In step T302, the projector PJ3 displays an image based on the operation information OPS. Specifically, based on the operation information OPS, the pointer image PPJ is displayed at a predetermined position in the original image (page image) ORG (that is, a position corresponding to the position of the pointer image PPC in the operation information generation area GA). To do.

  By repeatedly executing the processes of steps S307 to S309 and T302, the pointer image PPJ in the original image (page image) ORG projected and displayed on the screen SC can be moved in conjunction with the movement of the mouse MS. .

  In step T303, the scenario reproducing unit 105C in the projector PJ3 ends the process according to the scenario information for each page included in the supplied material file (PPT file) in a predetermined format.

  In step S310, the computer PC3 ends the operation information generation program according to the end information supplied from the projector PJ3.

  By the way, in step S307, when the user performs an operation of pressing (clicking) a switch provided on the mouse MS, in step T301, when the projector PJ3 projects and displays images according to the scenario information, the images are sequentially displayed. Can be paged.

  In step S307, when the user performs an operation of moving the mouse MS while pressing a switch provided on the mouse MS, an area can be specified in the page image ORG to be projected and displayed. In the projector PJ3 of the present embodiment, by designating an area, it is possible to superimpose a different type of decoration image such as a box image or a frame image on the designated area in the page image ORG. .

  As can be seen from the above description, in step S307, not only the position information of the mouse MS but also the switch information of the mouse MS is generated as the operation information OPS.

  FIG. 21 is an explanatory diagram showing processing when the box image PB is superimposed on the page image ORG using the pointer image PPJ in the page image ORG. The size of the box image PB is determined by designating two opposing vertices (start point and end point) of the box image PB in the page image ORG. 21A-1 to 21A-3 illustrate the operation information generation area GA included in the operation detection window DW (FIG. 20). FIGS. 21B-1 to 21B-3 show page images ORG displayed on the screen SC by the projector PJ3.

  In FIG. 21A-1, the mouse MS of the computer PC3 is operated to specify the start point P1C for specifying the area. This is performed when the user moves the mouse MS to move the pointer image PPC to the start point P1C and presses the switch of the mouse MS. At this time, as shown in FIG. 21B-1, the start point P1J is designated by the pointer image PPJ in the page image ORG. When the start point P1J is designated in the page image ORG, a start point image PS that represents the start point of the box image PB is superimposed on the position of the start point P1J.

  In FIG. 21 (A-2), the user moves the mouse MS to the end point P2C of the region while pressing the switch of the mouse MS. At this time, in the operation information generation area GA, a frame having a line connecting the start point P1C and the end point P2C as a diagonal line is displayed as a broken line. On the other hand, in the page image ORG, as shown in FIG. 21B-2, when the start point image PS is displayed, the end point image PE is displayed instead of the pointer image PPJ, and the end point image PE is used to display the page image. The end point P2J in the ORG is designated.

  In FIG. 21A-3, the user stops pressing the switch of the mouse MS. At this time, as shown in FIG. 21B-3, the box image PB is superimposed on the range set by the start point P1J and the end point P2J in the page image ORG.

  The decoration image data representing the decoration images of the start point image PS, the end point image PE, and the box image PB is prepared by the decoration image processing unit 140 (FIG. 17) and supplied to the image processing unit 110.

  The type of decoration image such as the box image PB superimposed on the page image ORG is designated in advance by selecting the “menu” button BM included in the operation detection window DW (FIG. 20). That is, when the user moves the pointer image PPC on the operation detection window DW of the computer PC3 and selects the “menu” button BM, menu display start information is supplied to the projector PJ3 via the LAN. The CPU 100 in the projector PJ3 controls the menu image processing unit 150 and the image processing unit 110 based on the menu display start information supplied to the network interface unit 190, and displays the menu image as an original image ORG on the screen SC. Let The user selects the type of decoration image to be used by using the pointer image PPJ superimposed and displayed in the original image ORG (menu image). It is also possible to display a menu image using the remote controller RM and select the type of decoration image to be used using the remote controller RM.

  As described above, the computer PC3 of this embodiment includes the material file supply unit 336 and functions as a material file supply device. The material file supply unit 336 causes the display unit 350 to display an execution icon for causing the material file supply unit 336 to execute processing, and the operation of the mouse MS causes the file icon of the material file to be dragged and moved to the execution icon. When dropped, the material file MF is supplied to the scenario storage area 107. The projector PJ3 reads the material file supplied from the material file supply device PC3 and stored in the scenario storage area 107, and prepares page image data representing an image for each page represented by the image information according to the scenario information. A page image processing unit is provided.

  In the third embodiment, a scenario playback system including a projector PJ3 as a scenario playback device and a computer PC3 as a material file supply device corresponds to the projector according to the sixth aspect of the present invention.

  If the projector according to the sixth aspect of the present invention is used, the trouble of creating a scenario file can be omitted. As a result, the projector can easily and sequentially display images for each page.

C-1. Variations of the second and third embodiments:
In the second embodiment, the computer PC2 only includes the scenario creation unit 332B in the RAM 330, but the computer PC2 has a function similar to that of the material file supply unit 336 provided in the computer PC3 of the third embodiment. You may make it provide the scenario supply part which has. In this way, the user can drag and drop the scenario file prepared in advance by the scenario creation unit 332B of the computer PC2 into the execution icon of the scenario supply unit as shown in FIG. By dropping, it can be supplied to the projector (that is, the projection display device) PJ2.

  In the second embodiment, the computer PC2 only includes the scenario creation unit 332B in the RAM 330, but the computer PC2 allows the user to operate the mouse MS like the computer PC3 in the third embodiment. An operation information generation unit 338 that detects and generates operation information OPS based on the detection result may be provided. In this way, the user can operate the projector (that is, the projection display device) PJ2 by operating the mouse MS.

  In the above case, a scenario reproduction system including the projector PJ2 as the scenario reproduction device and the computer PC2 as the scenario supply device having the scenario supply unit and the operation information generation unit is the projector according to the fifth aspect of the present invention. It corresponds to.

  In the second and third embodiments, the computers PC2 and PC3 include the mouse MS as the input unit 360. However, instead of the mouse MS, other pointing devices such as a tablet, a trackball, a trackpad, and a joystick are used. You may make it provide. These pointing devices also have the same function as the mouse MS and correspond to the pointing device in the present invention.

D. Fourth embodiment:
In the fourth embodiment, a projector having a security function according to the present invention and an image display system configured by connecting the projector to a network will be described.

D-1. Projector configuration:
The schematic configuration of the projection display apparatus (projector) according to the present embodiment will be described with reference to FIGS. FIG. 22 is an explanatory diagram showing a configuration example of an image display system configured by connecting a projector according to the fourth embodiment to a network. FIG. 23 is a block diagram illustrating an internal circuit configuration of the projector according to the fourth embodiment.

  The projector PJ4 is connected to the file server FS and the personal computer PC4 via the network line NL. The personal computer PC4 includes a CPU 1050 that executes an application program, a ROM 1051 that stores the application program, and a RAM 1052 that temporarily stores processing contents during execution of the application program. The personal computer PC4 also includes a built-in hard disk drive (HDD) 1053 that stores a data file (display data) generated by the application program when the application program ends, and a display display 1054 that displays a user interface of the application program. The data file stored in the HDD 1053 of the personal computer PC4 is transferred to the file server FS according to the procedure described later. Further, when transferring the data file to the file server FS, the CPU 1050 of the personal computer PC4 generates an index file and transfers it to the projector PJ4. Commands and data are input to the personal computer PC4 via an external input device 1055 such as a keyboard 1551 and a mouse 1552, for example.

  The projector PJ4 includes an external storage device 1041 such as a memory card conforming to the PCMCIA standard, and stores the index file transferred from the personal computer PC4. For example, commands and data are input to the projector PJ4 via an external input device 1040 such as a remote controller. The file server FS is a server that stores data files in place of the projector PJ4, and has a plurality of directories. In the present embodiment, the file server FS is assigned S1 as a name. When reproducing (projecting) a data file, when the projector PJ4 requests the file server FS to transfer the corresponding data file using the index file, the requested data file is transferred to the file server via the network line NL. Transferred from the FS to the projector PJ4.

  The internal configuration of the projector PJ4 according to the present embodiment will be described with reference to FIG. The projector PJ4 includes an ASP terminal unit 1020 that mainly functions as an ASP terminal and a projector unit 1030 that mainly performs a conventional projector function. That is, the projector PJ4 according to the present embodiment can function as an ASP terminal corresponding to the ASP.

  The ASP terminal unit 1020 includes a viewer application, a first central processing unit (CPU) 1200 that executes various arithmetic processes including execution of a client application corresponding to the ASP, a viewer application executed by the first CPU 1200, a client application, A first read only memory (ROM) 1202 for storing various programs including an application for acquiring a data file based on the index file, a first random access for temporarily storing calculation results, data, etc. of the first CPU 1200 A memory (RAM) 1204 is provided. The first ROM 1202 further stores an authentication program that is executed when the display data is reproduced (projected and displayed). The first CPU 1200 and the first ROM 1202 are connected so as to be capable of unidirectional or bidirectional communication, and the first CPU 1200 and the first RAM 1204 are connected so as to be capable of bidirectional communication.

  The ASP terminal unit 1020 includes a graphics controller 1210 that is connected to the first CPU 1200 so as to be capable of bidirectional communication and generates image data based on a drawing command from the first CPU 1200. The graphics controller 1210 has an LSI chip (not shown) for generating an image and a video memory (VRAM) 1212 for storing the generated image (display image).

  The ASP terminal unit 1020 includes a network interface controller 1220, an I / O port 1230, a PCMCIA interface controller 1240, and a USB controller 1250 as interfaces for transmitting and receiving commands and data between the projector PJ4 and an external device. I have. The network interface controller 1220 is a controller compliant with, for example, the Ethernet (registered trademark) standard, converts commands and data transmitted from the ASP terminal unit 1020 to the network line NL into an appropriate format according to a network communication protocol, Alternatively, the signal received from the network line NL is converted into a format suitable for processing in the ASP terminal unit 1020. The I / O port 1230 is a general input / output port, and is connected to the wireless input device 1234 via the identification circuit 1232 and is also connected to the external input device 1040 and the second CPU 1300 of the projector unit 1030. The wireless input device 1234 is an input device for receiving input data wirelessly transmitted from a wireless input device, and the identification circuit 1232 is an input in which the input data received by the wireless input device 1234 is transmitted to itself. Identify whether it is data.

  The PCMCIA interface controller 1240 is a controller that transfers data from the ASP terminal unit 1020 to the external device and transfers data from the external device to the ASP terminal unit 1020 in accordance with the PCMCIA standard. In this embodiment, for example, a PC card memory is connected as the external storage device 1041, and display data transferred from the personal computer PC 4 is stored in the external storage device 1041. The USB controller 1250 is a controller that transfers data between the ASP terminal unit 1020 and an external device according to the USB standard, and is connected to the external input device 1040 via the USBHUB 1252, for example.

  In addition, the ASP terminal unit 1020 is connected to a real-time clock 1260 that supplies absolute time in the ASP terminal unit 1020 and a sound source 1262 that generates sound data based on a command from the first CPU 1200.

  The first CPU 1200, each controller 1210, and the like in the ASP terminal unit 1020 are connected to each other via a bus that transmits data and commands.

  Next, the configuration of the projector unit 1030 will be described. The projector unit 1030 executes a predetermined program to control each circuit of the projector unit 1030, a second central processing unit (CPU) 1300, and a second read only memory (ROM) 1302 that stores a program executed by the second CPU 1300. A second random access memory (RAM) 1304 for temporarily storing calculation results, data and the like of the second CPU 1300 is provided. The second CPU 1300 and the second ROM 1302 are connected so as to be capable of unidirectional or bidirectional communication, and the second CPU 1300 and the second RAM 1304 are connected so as to be capable of bidirectional communication.

  The projector unit 1030 further includes a video signal conversion circuit 1310, an audio control circuit 1320, a liquid crystal (LCD) drive circuit 1330, a light source control circuit 1340, a cooling fan control circuit 1350, and a projection optical system 1360.

  The video signal conversion circuit 1310 realizes functions such as an analog-digital conversion function, a decoding function, a synchronization signal separation function, and an image processing function. That is, the video signal conversion circuit 1310 converts the analog video signal input from the external video signal input terminal 1312 into digital image data, and the converted digital image data is synchronized with the synchronization signal in the video signal conversion circuit 1310. Write to a frame memory (not shown) or read digital image data written to the frame memory from the frame memory. As the analog video signal, for example, an RGB signal output from a personal computer or a composite video signal output from a video tape recorder or the like is input. When the analog video signal is a composite video signal, the video signal conversion circuit 1310 demodulates the composite video signal and separates it into a component video signal and a synchronization signal composed of three color signals of RGB. Is converted into digital image data. In the case where the analog video signal is an RGB signal output from a personal computer, it is originally input as a component video signal and a synchronization signal is also input separately, so separation processing is unnecessary, and the video signal conversion circuit 1310 The component video signal is converted into digital image data.

  The digital video signal transmitted from the graphics controller 1210 of the ASP terminal unit 1020 is also input to the video signal conversion circuit 1310. In such a case, an analog-digital conversion process and a separation process are unnecessary because the synchronization signal is originally supplied as a digital video signal and supplied separately.

  The audio control circuit 1320 is connected to the external audio signal input terminal 1322, the speaker 1324, the second CPU 1300, and the sound source 1262 of the ASP terminal unit 1020. The audio control circuit 1320 is connected to the second CPU 1300, and in accordance with a command from the second CPU 1300, the speaker 1324 is connected by a drive signal generated based on an audio signal or sound data transmitted from the external audio signal input terminal 1322 or the sound source 1262. To drive.

  The LCD drive circuit 1330 receives the image data processed by the video signal conversion circuit 1310, drives the LCD 1332 according to the received image data, and modulates the illumination light emitted from the light source 1342. Illumination light modulated by the LCD 1332 is projected onto a projection surface, for example, a projection screen, via a projection optical system 1360 including a lens. A light source control circuit 1340 is connected to the light source 1342, and the light source control circuit 1340 controls on / off of the light source 1342 in accordance with a command from the second CPU 1300. A cooling fan 1352 for sending cooling air to the light source 1342 is disposed on the back surface of the light source 1342. A cooling fan control circuit 1350 is connected to the cooling fan 1352, and the cooling fan control circuit 1350 controls the rotation speed of the cooling fan 1352 and the like according to a command from the second CPU 1300.

D-2. Basic operation of the projector:
Next, a basic operation of the projector PJ4 according to the present embodiment having the above-described configuration will be described with reference to FIGS.

  A signal input to the projector PJ4 via the network line NL is converted into a format suitable for the ASP terminal unit 1020 by the network interface controller 1220 of the ASP terminal unit 1020, and transferred to the first CPU 1200 as data and commands. First CPU 1200 temporarily stores the transferred data in first RAM 1204, and determines whether the transferred command is a command for ASP terminal unit 1020 or a command for projector unit 1030. When the transferred command is a command for the projector unit 1030, the first CPU 1200 transfers the command to the second CPU 1300 of the projector unit 1030 via the I / O port 1230.

  On the other hand, when the transferred command is a command for the ASP terminal unit 1020, the first CPU 1200 executes arithmetic processing based on the transferred command. For example, the first CPU 1200 stores the data stored in the first RAM 1204 in the external storage device 1041. In addition, when a reproduction request (projection display request) for data stored in the external storage device 1041 is input from the remote controller 1040 or the like, the first CPU 1200 executes a data file reproduction program using an index file described later. . In order to read (reproduce) the data stored in the external storage device 1041 or the first RAM 1204, the first CPU 1200 reads and starts an appropriate viewer application from the first ROM 1202, and generates user interface data of the stored data. The graphics command is transferred to the graphics controller 1210 together with the drawing command.

  Alternatively, when the projector PJ4 functions as a server-based computing (SBC) client, the first CPU 1200 activates a corresponding client application, and receives user interface screen data from the received display image data having a dedicated format. A drawing command is transmitted to the graphics controller 1210 so as to generate. The graphics controller 1210 generates user interface image data (hereinafter referred to as “image data”) to be displayed based on the display screen data in accordance with the received drawing command, and stores it in the VRAM 1212 in the graphics controller 1210.

  The graphics controller 1210 reads image data stored in the VRAM 1212 of the graphics controller 1210 at a predetermined timing in accordance with a command from the first CPU 1200 and transfers the image data to the video signal conversion circuit 1310 of the projector unit 1030. The first CPU 1200 receives a command or data from the external input device 1040 via the USBHUB 1252, the USB controller 1250, and the I / O port 1230. The first CPU 1200 stores data stored in the RAM 1204 or the VRAM 1212 of the graphics controller 1210 via the PCMCIA interface controller 1240 according to a command received via the external input device 1040 or the network line NL. The stored image data is stored in the external storage device 1041.

  When receiving the image data from the graphics controller 1210, the video signal conversion circuit 1310 executes the above-described processing and transfers the processed image data to the LCD driving circuit 1330. The LCD drive circuit 1330 drives and controls the LCD 1332 according to the received image data to project desired image data on the projection screen.

  For example, when the command transferred from the network line NL via the I / O port 1230 instructs the second CPU 1300 to turn on the light source 1342, the second CPU 1300 turns on the light source 1342 via the light source control circuit 1340. The second CPU 1300 controls the operating state (rotation speed, rotation timing, etc.) of the cooling fan 1352 according to the temperature of the light source 1342 via the cooling fan control circuit 1350.

  Data transmission from the projector PJ4 to the network line NL is executed via the network interface controller 1220 in accordance with a command from the first CPU 1200.

D-3. Procedure for transferring an index file to the projector according to the present embodiment in the image display system and procedure for displaying a data file using the index file in the projector:
Next, processing executed when a data file is transferred from the personal computer PC4 via the network to the projector PJ4 according to the present embodiment having the above-described configuration will be described with reference to FIGS. To do. FIG. 24 is a flowchart showing a processing routine executed when a data file is transferred from personal computer PC4 to projector PJ4. FIG. 25 is an explanatory diagram conceptually showing a procedure executed on the display 1054 of the personal computer PC4 in order to transfer the data file from the personal computer PC4 to the projector PJ4. FIG. 26 is an explanatory diagram showing an example of an index file information setting screen that appears on the display 1054 after the procedure shown in FIG. 25 is completed. FIG. 27 is an explanatory diagram conceptually showing data included in the index file.

  Presentation data, word processor data, and the like generated by executing an application on the personal computer PC4 are temporarily stored in the RAM 1052 in the personal computer PC4 during execution of the application. When the application ends, the data is stored as a data file in the built-in HDD 1053 of the personal computer PC4. Therefore, the HDD 1053 stores a plurality of data files including data files generated in the past.

  In the processing routine shown in FIG. 24, the CPU 1050 of the personal computer PC4 waits for the generation of a file storage request (step S100: No), and detects the generation of the file storage request (step S100: Yes). Is requested (step S110).

  In today's general OS, various operations can be visually executed by a graphical user interface (GUI) displayed on the display 1054. In such a GUI environment, as shown in FIG. 25, for example, a file icon FL corresponding to each file stored on the HDD 1053 is displayed in the window FW on the display 1054, and the projector that is the transfer destination is displayed. An icon PJ indicating PJ4 is displayed on the display 1054. When a file on the HDD 1053 is moved (transferred) to the projector PJ4, the mouse pointer MP is placed on the desired file icon FL, and the mouse pointer MP is moved to the projector icon while the selection button of the mouse 1552 is held down. After moving on the PJ, release the select button. Such an operation is a file movement operation known as drag and drop (D & D).

  The CPU 1050 of the personal computer PC4 detects the occurrence of a file save request when the coordinate position of the mouse pointer MP overlaps the area of the projector icon PJ while the selection button of the mouse 1552 is held down and the selection button of the mouse 1552 is released. To do.

  As shown in FIG. 26, the CPU 1050 of the personal computer PC4 displays a data file storage information setting screen CW for inputting a data file storage destination, a file name, a password, and a memo. In this embodiment, it is assumed that a predetermined directory in the file server FS is designated as the default value of the storage destination. The storage location information includes a storage destination and a file name. Passwords and memos are optional items. Since the memo information is displayed at the same time as the file name of the data file in the projector PJ4 as will be described later, it can be used, for example, as a keyword and a memorandum at the time of search. When setting the password, for example, any five numbers from 1 to 5 are input via the keyboard 1551.

  The CPU 1050 of the personal computer PC4 determines whether or not the storage destination is a default value (step S120). If it is determined that the storage destination is a default value (step S120: Yes), an index file is generated. (Step S130). On the other hand, when the CPU 1050 determines that the storage destination is not the default value (step S120: No), the CPU 1050 changes the storage destination (step S140) and generates an index file (step S130). As shown in FIG. 27, the index file is a file including the data file storage destination IP address D1, directory D2, file name D3, password D4 and memo D5 (during setting), and is included in the data file. It does not include the data itself. Therefore, the file size of the data file is generally about 10 KB to several MB, while the file size of the index file is about 1 to 2 KB. In this embodiment, the data file storage destination IP address D1 and directory D2 form a storage destination, and the data file storage destination IP address D1, directory D2, and file name D3 include three data. Storage location information shall be configured.

  The CPU 1050 transfers the data file to the storage destination, in this embodiment, the file server FS, transfers the index file to the external storage device 1041 of the projector PJ4 (step S150), and ends this processing routine. That is, the data file is stored on the file server FS, and the index file is stored in the external storage device 1041 of the projector PJ4.

  Next, FIG. 22, FIG. 23 and FIG. 23 show the reproduction processing executed when the projector PJ4 reproduces the data file stored on the file server FS using the index file stored in the external storage device 1041. A description will be given with reference to FIGS. FIG. 28 is a flowchart showing a processing routine executed when the projector PJ4 reproduces the data file stored on the file server FS using the index file stored in the external storage device 1041. FIG. 29 is an explanatory diagram schematically showing a remote controller 1040 used in the fourth embodiment. FIG. 30 is an explanatory diagram showing an example of a menu screen in the projection display screen SR of the projector PJ4. FIG. 31 is an explanatory diagram showing an example of a file selection screen in the projection display screen SR of the projector PJ4. FIG. 32 is an explanatory diagram showing an example of the display of the password input box PB1 in the projection display screen SR of the projector PJ4. FIG. 33 is an explanatory diagram showing an example of the display of the authentication failure display box PB2 in the projection display screen SR of the projector PJ4.

  As shown in FIG. 29, the remote controller 1040 that transmits a command in this processing routine includes 1 to 5 numeric keys 1401 that function as function keys for executing functions assigned in advance. The remote control 1040 also includes a joystick 1402, a menu call key 1403, an execution key 1404, and the like for moving the cursor or pointer position in the vertical and horizontal directions on the projected screen SR. It is assumed that the menu call key 1403 of the remote controller 1040 is operated and the menu screen as shown in FIG. 30 is projected and displayed before the start of this processing routine.

  First CPU 1200 of projector PJ4 waits for an input of an index screen display request via remote controller 1040 (step S200: No). On the other hand, when the execution key 1404 is pressed while the menu bar MB1 of “2. Index screen display” is highlighted by operating the joystick 1402 on the menu screen shown in FIG. 30, the first CPU 1200 generates a file selection request. It is determined that it has been (input) (step S200: Yes). When determining that a file selection request has been generated (input), the first CPU 1200 requests the second CPU 1300 to project and display an index screen as shown in FIG. 31 (step S210).

  The index screen displays the file name and memo in the form of the index bar IB among the information included in the index file stored in the external storage device 1041. The first CPU 1200 determines whether or not a data file to be reproduced on the index screen has been determined (step S220). In the index screen shown in FIG. 31, the first CPU 1200 operates the joystick 1402 to display a desired data file, here, the index bar IB of “2. ******. Ppt. When the execution key 1404 is depressed, it is determined that the reproduction of the data file that is highlighted is determined (input).

  If the first CPU 1200 determines that the data file reproduction has been determined (step S220: Yes), the first CPU 1200 requests input of a setting password (step S230). That is, the first CPU 1200 requests the second CPU 1300 to project and display the password input box PB1 shown in FIG.

  A password consisting of a combination of numbers 1 to 5 is input to the password input box PB1 via the function key 1401 of the remote controller 1040. The first CPU 1200 determines whether or not the input password matches the set password (step S240). If it is determined that both passwords match (step S240: Yes), the data determined to be reproduced is determined. The storage location (file server FS) of the determined data file is acquired from the index file corresponding to the file, and the transfer of the determined data file is requested (step S250).

  The first CPU 1200 waits for reception of the decision data file (step S260: No), and when receiving the decision data file from the file server FS (step S260: Yes), requests the graphics controller 1210 to execute the decision file rendering process. Then, reproduction of the decision file is started (step S270). Image data drawn and generated by the graphics controller 1210 is projected and displayed on the screen via the video signal conversion circuit 1310, the LCD drive circuit 1330, the LCD 1332, and the projection optical system 1360 of the projector unit 1030.

  If the first CPU 1200 determines that the password input via the remote controller 1040 does not match the set password (step S240: No), the authentication failure display box PB2 as shown in FIG. 33 is projected to the second CPU 1300. A request for display is made (step S280), and reproduction of the selected file is not executed. It should be noted that, when an incorrect password is entered, the reproduction of the determined data file may be prohibited when the password is not consistent for a predetermined number of times.

  According to this embodiment, when a data file is stored in the projector PJ4 from the personal computer PC4, an index file including storage destination information necessary for acquiring the data file via the network is generated. The external storage device 1041 of the projector PJ4 stores an index file with a small file size, and stores a data file with a large file size in a file server FS on the network. The file size of the index file is about 1 to 2 KB as described above. Therefore, the projector PJ4 does not need to include the external storage device 1041 having a large storage capacity, and substantially transfers a data file having a large file size to the projector PJ4 regardless of the storage capacity of the external storage device 1041. be able to. In other words, since the index file includes data file storage destination information and the like, by transferring the index file to the external storage device 1041 of the projector PJ4, an execution environment similar to that when the data file is transferred to the projector PJ4 is constructed. Can do.

  When the projector PJ4 reproduces a desired data file, the projector PJ4 uses the stored index file to specify the file server FS that is the storage destination of the data file, acquires the data file from the file server FS, and reproduces it. To do. Therefore, even if the projector PJ4 does not store the data file directly in the external storage device 1041, the index file is stored and used, so that the data file is stored in the same manner as when the data file is stored in the external storage device 1041. Can be played. In addition, since the file size of the index file is extremely smaller than the file size of the data file, the same effect as when a larger number of data files are stored on the projector PJ4 side is expanded in the storage capacity of the external storage device 1041. Can be realized. For example, even when a presentation is made by a large number of people, the projector PJ4 can be operated in the same manner as when all data files are stored in the external storage device 1041 of the projector PJ4.

  Further, by storing the index file in the external storage device 1041 of the projector PJ4 and storing the data file in a file server on the network, the presentation can be performed using the projector PJ4 alone without connecting the personal computer PC4. Can be executed. Thereby, it is possible to save the trouble of connecting the personal computer PC4 each time the projector PJ4 is used.

  In the above embodiment, when the file icon FL is dragged and dropped onto the projector icon PJ on the display 1054 in the personal computer PC4, an index file is automatically generated based on the data file. The generated index file can be transferred / saved to the projector PJ4, and the data file can be transferred / saved to any storage destination (file server FS in this embodiment). The operation can be performed. Further, since the password can be set when transferring the data file, the confidentiality of the data file can be ensured.

  Further, in the above embodiment, when the reproduction of the data file for which the password is set is instructed, the projector PJ4 displays the password input box PB on the projection display screen SR and inputs the set password. Prompt. In addition, the password authentication procedure is completed before requesting the data file transfer by determining whether or not the input password matches the set password based on the password information included in the index file. be able to. Therefore, as long as the password does not match, the data file is not transferred from the file server FS to the projector PJ4, and access to the data file by a third party can be prevented. Further, since the data file is not transferred unless the password matches, the traffic amount of the network line NL can be reduced.

D-4. Modification of the fourth embodiment:
In the above embodiment, the file server FS connected to the network is used as the data file transfer / save destination when the file icon FL is dragged and dropped onto the projector icon PJ on the display 1054. The data may be transferred to and stored in another personal computer.

  If the personal computer PC4 has a PCMCIA slot, the transfer destination of the index file from the personal computer PC4 may be a PC memory card stored in the PCMCIA slot. In such a case, after the index file is transferred to the PC memory card in the personal computer PC4 in advance, the PC memory card is inserted into the projector PJ4, so that the same effect as the above embodiment can be obtained.

  In the above embodiment, the case where a single index file is generated (associated) with a single data file has been described. However, a plurality of data files may be associated with one index file. In this case, when requesting transfer of data files to be used continuously, transfer of a plurality of data files can be requested using one index file without using a plurality of index files.

  In the above embodiment, three data of the data file storage destination IP address D1, directory D2, and file name D3 are used as storage location information. However, when one directory is assigned to each data file. The storage location information may be composed of a storage destination IP address D1 and a directory D2. In any case, it is sufficient that the data file can be identified (specified) based on the index file.

  In the above embodiment, the password is set using the numbers 1 to 5, but this limitation only corresponds to the number that can be input by the remote controller 1040 as described above. Needless to say, when numbers, characters, etc. other than 5 can be input, passwords can be set using numbers, characters, etc. other than 1-5. For example, a liquid crystal display window may be provided in the remote controller 1040, and a password such as a character may be input using the joystick 1402. Alternatively, various numbers and characters may be input using a wireless keyboard or the like.

  In addition, it goes without saying that the display screen on the display 1054 and the projection display screen SR in the above-described embodiment are merely examples, and can be appropriately changed during implementation.

  As described above, although the name ASP terminal unit 1020 is used for the network terminal unit in the above-described embodiment, the projector PJ4 is not necessarily required to be an ASP terminal or called an ASP terminal. For example, application data (file) may be received via a network, a file may be opened by a viewer application or an application, and the display screen may be projected. In such a case, the projector PJ4 may determine the file format and automatically start the optimal viewer, or the server may simultaneously supply a startup command for starting the appropriate viewer with the file to the projector PJ4. May be.

  In the above embodiment, the ASP terminal unit 1020 and the projector unit 1030 are each provided with a CPU, RAM, and ROM, but may be provided only in the ASP terminal unit 1020. In such a case, the CPU in the ASP terminal unit 1020 executes control of the projector unit 1030.

  In the above-described embodiment, the projector unit 1030 includes the external video signal input terminal 1312 and the external audio signal input terminal 1322, but may be omitted when the projector is a network connection dedicated projector. In such a case, image data and audio data are supplied via the network line NL.

  In the above embodiment, various interface controllers are provided, but it goes without saying that they can be omitted as appropriate, except for the network interface controller 1220.

  As described above, the present invention has been described based on the respective examples, but the present invention is not limited to the above examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

(1) In each of the embodiments described above, the projector (that is, the projection display device) includes a liquid crystal light valve as an electro-optical device, but instead includes a micromirror light modulation device, a CRT, or the like. May be. For example, a DMD (digital micromirror device) (trademark of TI) can be used as the micromirror light modulator. The electro-optical device may be any device that forms image light according to image data.

(2) In each of the above embodiments, a part of the configuration realized by hardware may be replaced with software, and conversely, a part of the configuration realized by software may be replaced with hardware. May be.

INDUSTRIAL APPLICABILITY The present invention can be applied to, for example, various projectors that can project and display an image.

It is explanatory drawing which shows the scenario creation and reproduction | regeneration system to which this invention is applied. It is explanatory drawing which shows schematic structure of computer PC1 of FIG. It is explanatory drawing which shows schematic structure of the projector PJ1 of FIG. It is a flowchart which shows a series of processing procedures in the scenario creation / reproduction system of FIG. 5 is an explanatory diagram showing a desktop screen displayed on a display unit 350. FIG. It is explanatory drawing which shows the selection screen SSM of the scenario file displayed by the projector PJ1. It is explanatory drawing which shows an example of the content of the scenario file supplied to projector PJ1. It is explanatory drawing which shows the scenario creation and reproduction | regeneration system in 2nd Example. It is explanatory drawing which shows schematic structure of computer PC2 of FIG. It is explanatory drawing which shows schematic structure of the projector PJ2 of FIG. 9 is a flowchart showing a series of processing procedures in the scenario creation / reproduction system of FIG. 8. 7 is an explanatory diagram showing a scenario creation window SMW displayed on a display unit 350. FIG. It is explanatory drawing which shows the scenario file selection screen SSM displayed by the projector PJ2. It is explanatory drawing which shows an example of the content of the scenario file supplied to the projector PJ2. It is explanatory drawing which shows the scenario reproduction | regeneration system in 3rd Example. FIG. 16 is an explanatory diagram illustrating a schematic configuration of a computer PC3 of FIG. FIG. 16 is an explanatory diagram showing a schematic configuration of the projector PJ3 of FIG. It is a flowchart which shows a series of processing procedures in the scenario reproduction | regeneration system of FIG. 5 is an explanatory diagram showing a desktop screen displayed on a display unit 350. FIG. It is explanatory drawing which shows the operation detection window DW displayed on the display part 350 of computer PC3. It is explanatory drawing which shows the process at the time of superimposing the box image PB in page image ORG using the pointer image PPJ in page image ORG. It is explanatory drawing which shows the structural example of the image display system comprised by connecting the projector which concerns on 4th Example to a network. It is a block diagram which shows the internal circuit structure of the projector which concerns on 4th Example. 10 is a flowchart showing a processing routine executed when display data is transferred from personal computer PC4 to projector PJ4. It is explanatory drawing which shows the process performed on the display display 1054 of personal computer PC4 in order to transfer display data with respect to projector PJ4 from personal computer PC4. FIG. 26 is an explanatory diagram illustrating an example of an index file information setting screen that appears on the display 1054 after the processing illustrated in FIG. 25 is terminated. It is explanatory drawing which shows the data contained in an index file notionally. 10 is a flowchart showing a processing routine executed when reproducing a data file stored in an external storage device 1041 in projector PJ4. It is explanatory drawing which shows typically the remote control 1040 used in 4th Example. It is explanatory drawing which shows an example of a menu screen among the projection display screen SR of the projector PJ4. It is explanatory drawing which shows an example of an index screen among the projection display screen SR of the projector PJ4. It is explanatory drawing which shows an example of the display of password input box PB1 among the projection display screen SR of projector PJ4. It is explanatory drawing which shows an example of a display of the authentication failure display box PB2 among the projection display screen SR of the projector PJ4.

Claims (9)

An image display system in which a file server for storing data files, a projector, and a computer are connected to each other via a network,
The calculator is
Input means for inputting data and commands;
Data file storage means for storing a data file to be displayed by the projector;
Transfer request determination means for determining whether a request to transfer a desired data file from the data file storage means to the file server has occurred via the input means;
If it is determined that a transfer request for the data file has occurred, an index file generation unit that generates an index file that includes the transfer destination information and password information of the data file and has a smaller file size than the data file;
Sending means for sending the data file to the file server and sending the index file to the projector;
With
The projector is
Index file storage means for receiving and storing the transferred index file;
A determination screen generating means for generating a data file determination screen for determining a data file desired to be displayed, using the index file stored in the index file storage device;
The corresponding data file determination screen determined data file via the basis of the transfer destination information included in the index file, with specifying the file server requests to enter a password, the input password If the password matches the password information, transfer request means for requesting the file server to transfer the determined data file;
A projection display means for receiving and projecting and displaying the data file requested to be transferred;
An image display system comprising: The image display system according to claim 1,
The image display system, wherein the transfer destination information includes a transfer location and a file name of the data file. The image display system according to claim 1 or 2,
The calculator further includes:
A list of data files stored in the data file storage means, and a display screen device for displaying the icon of the projector,
The transfer request determination unit transfers the icon of the desired data file from the list of the stored data files on the display screen of the display screen device when the icon of the desired data file is dragged and dropped onto the icon of the projector. An image display system that determines that a request has occurred. An image display method executed by an image display system in which a file server storing a data file, a projector, and a computer are connected to each other via a network,
The calculator is
Decide which data file to transfer,
It is determined whether a transfer request for the determined data file has occurred,
If it is determined that a transfer request for the determined data file has occurred, an index file including the storage location information and password information of the determined data file and having a smaller file size than the data file is generated.
Transferring the determined data file to a storage device as a storage destination;
Transfer the index file to the projector ;
The projector is
A data file desired to be displayed is determined using the index file transferred from the computer,
A storage location of the determined data file is identified based on the corresponding index file;
When the user is requested to input a password, and the input password matches the password information, the storage destination having the specified storage location is requested to transfer the determined data file,
An image display method for receiving the determined data file and projecting it. A data file transfer method according to claim 4, wherein:
When a drag and drop of the determined data file icon to the storage device icon occurs on the display screen of the computer, it is determined that a request to transfer the data to the storage device has occurred. , Data file transfer method. A data file transfer method according to claim 4 or 5, wherein:
The storage device is a data file transfer method arranged in a file server connected to the projector and the computer via a network. A method of displaying a data file on a projector based on an index file having a storage location information of a data file and password information and having a file size smaller than that of the data file,
A data file desired to be displayed is determined using the index file,
A storage location of the determined data file is identified based on the corresponding index file;
Requesting the user to input a password, when the input password is consistent with the password information, it requests transfer of the data file with the determined relative to the destination with the specified storage location,
A method for displaying a data file, comprising: receiving the determined data file and performing projection display. A projector that acquires a data file to be displayed via a network from a file server that stores the data file,
Input means for inputting data and commands;
Index file storage means for storing an index file having a storage size information and password information of the data file and having a smaller file size than the data file;
A selection screen generating means for generating a selection screen of a data file associated with the index file;
Using storage location information index file corresponding to the selected data file through the selection screen has, along with identifying the location of said selected data file, requesting input of a password to the user, the input A transfer request means for requesting transfer of the selected data file, if the received password matches the password information;
Projection display means for projecting and displaying the selected data file acquired via the network;
A projector comprising: A computer-readable medium for storing a computer program for causing an image display system in which a file server, a projector, and a computer for storing data files are connected to each other via a network to execute image display processing ,
The program is
In the calculator,
Determining the data file to be transferred;
Determining whether a transfer request for the determined data file has occurred;
If it is determined that a transfer request for the determined data file has occurred, generating an index file including storage location information and password information for the determined data file and having a smaller file size than the data file; ,
Transferring the determined data file to a storage device as a storage destination;
Transferring the index file to the projector, and
In the projector,
Determining a data file to be displayed using the index file;
Determining a storage location of the determined data file based on the corresponding index file;
A step requesting the user to input a password, when the input password is consistent with the password information, to request the transfer of data files that the determined relative to the destination with a storage location that the determined,
Receiving the determined data file and projecting and displaying it;
The computer-readable medium which memorize | stored the program for implement | achieving .

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