JP2008107485A - Remote operation apparatus, image projector, image projection system, and remote control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image projection system which eliminates the necessity of installing a computer apparatus and switches an image to be projected from an image projector at high speed. <P>SOLUTION: In a remote operation apparatus which receives image data and controls an image projector for projecting the image based on the image data, information on one page is extracted from information on a plurality of pages included in stored file data and rendered and thereby continuously generating the one image data until the rendering of the information of prescribed pages or more of the information on the plurality of pages ends. Also, every time the image data of one page are generated, the image data are transmitted to the image projector. Then, an image data specification signal is transmitted to specify the image data to be projected by the image projector among the image data transmitted to the image projector. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a remote operation device, an image projection device, an image projection system, and a remote control method, and more particularly to an image projection device that receives image data and projects an image based on the image data, and controls the image projection device. The present invention relates to an image projection system including a remote control device.

  2. Description of the Related Art Conventionally, an image projection apparatus such as a projector that inputs image data from a computer apparatus or the like, displays the image on a liquid crystal display element, and projects an enlarged image on a projection screen by irradiating light has been widely used. There is also an image projection apparatus that projects an image based on image data using a DMD (Digital Micromirror Device) element.

  This image projection apparatus is used in various ways such as small-scale presentations at conferences and large-scale presentations that gather a large number of audiences and present their research results. In such a presentation, a computer device is arranged in front of the presenter, and image data corresponding to an image displayed on the display unit of the computer device is transmitted from the computer device to the image projection device via a cable. This is performed by the image projection apparatus enlarging and projecting an image based on the image data.

  However, since the image projected by the image projection device is an image displayed on the display unit of the computer device, in order to change the image projected by the image projection device, the image displayed on the computer device is changed. Had to change. In general, the presentation data includes information on a plurality of pages, and there is an annoying task of converting the display screen of the computer device to a plurality of pages separated from the currently displayed page.

Therefore, Patent Document 1 proposes a presentation system in which a small portable terminal device for remotely controlling a computer device is provided, and an image displayed on the computer device can be switched remotely by this small portable terminal device. .
JP 2003-330441 A

  However, since the technique described in Patent Document 1 outputs image data from a computer device to an image projection device, it is necessary to install the computer device at the time of presentation, which is troublesome.

  In addition, since the image projected from the image projection apparatus is switched by switching the image displayed on the computer apparatus, the display image switching process of the computer apparatus and the image data from the computer apparatus to the image projection apparatus are performed. It takes time to transmit the image, and this hinders fast switching of the image projected from the image projection apparatus.

  Accordingly, in order to solve the above-described problems, the present invention provides a remote operation device for controlling an image projection device that receives image data and projects an image based on the image data. File acquisition means for acquiring file data in a format, and processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included in the acquired file data Rendering means continuously performing rendering of page information of a predetermined number of pages or more out of page information, and each time image data of one page is generated by the rendering means, the image data is Image data transmission means for transmitting to the image projection device, and image data transmitted to the image projection device Among is characterized in that a designation signal transmitting means for transmitting the image data designation signal for designating the image data to be projected by the image projection apparatus.

  According to a second aspect of the present invention, in the first aspect of the present invention, the image data storage means for storing the image data generated by the rendering means, the display means for displaying an image, and the image data storage means. And display control means for displaying the image data stored in the display means on the display means.

  According to a third aspect of the present invention, in the second aspect of the present invention, the display control means outputs the image data of the next page of the image data corresponding to the image projected by the image projection device. It is extracted from the image data storage means and displayed on the display means.

  According to a fourth aspect of the invention, in the invention of the second or third aspect, the rendering means obtains comment information corresponding to the image data generated by the rendering from the acquired file data. By extracting and rendering, comment image data that is image data of the comment information is generated, and the display control unit displays the comment image data corresponding to the image data projected by the image projection device. It is characterized by displaying.

  Further, the invention according to claim 5 is the invention according to claim 4, further comprising display switching operation means for switching display contents on the display means, wherein the display control means is a display switching operation means. According to an operation, either one of the image data of the next page and the comment image data is selected, and an image based on the selected image data is displayed on the display means.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the image data transmitting unit includes identification information of the image data generated by the rendering unit together with the image data. The image data designation signal transmitted to the image projection apparatus and transmitted by the designation signal transmission means includes designation of the identification information.

  In the invention according to claim 7, in the invention according to claim 6, when the rendering means has not yet generated the image data of the identification information included in the image data designation signal, it generates the next. The image data is image data of identification information designated by the image data designation signal.

  The invention according to claim 8 is an image projection apparatus for projecting an image based on image data transmitted from the remote operation apparatus according to any one of claims 1 to 7, wherein the remote operation is performed. Storage means for storing image data sequentially transmitted from the apparatus; and image data corresponding to an image data designation signal transmitted from the remote operation apparatus is extracted from the storage means, and an image corresponding to the extracted image data is displayed. An image projection apparatus comprising a projection control means for projecting is provided.

  According to a ninth aspect of the present invention, there is provided a remote control device according to any one of the first to seventh aspects, and an image projection device that projects an image based on image data transmitted from the remote control device. An image projection system comprising: storage means for storing image data sequentially transmitted from the remote operation device; and image data corresponding to an image data designation signal transmitted from the remote operation device. Is provided from the storage unit, and a projection control unit that projects an image according to the extracted image data is provided.

  The invention according to claim 10 is a program for causing a computer to function as a remote operation device for controlling an image projection device that receives image data and projects an image based on the image data. File acquisition means for acquiring file data in a predetermined format, and processing for generating one image data by extracting and rendering one page information from information of a plurality of pages included in the acquired file data A rendering unit that continuously performs rendering of information on pages of a predetermined number of pages or more among the information on the plurality of pages, and each time image data of one page is generated by the rendering unit, Image data transmitting means for transmitting image data to the image projection device; and Wherein the function as specified signal transmitting means for transmitting the image data designating signal for designating the image data to be projected by the image projection device among the image data transmitted to the image projection apparatus.

  The invention according to claim 11 is a remote control method in a remote control device for receiving an image data and controlling an image projection device for projecting an image based on the image data. A step of acquiring and processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included in the acquired file data; A step of continuously performing rendering for information on a plurality of pages, and a step of transmitting the image data to the image projection device each time image data of one page is generated by the rendering; Image data to be projected by the image projection device out of the image data transmitted to the image projection device. Characterized by a step of transmitting the image data designation signal designating.

  According to the first, tenth, and eleventh aspects of the present invention, when file data of a predetermined format is acquired, one page information is extracted from the information of a plurality of pages included in the file data and rendered. The process of generating image data is continuously performed until the rendering of the information of a predetermined number of pages or more among the information of the plurality of pages is completed, and each time image data of one page is generated by this rendering. The image data is transmitted to the image projection device, and the image data designation signal for designating the image data to be projected by the image projection device among the image data transmitted to the image projection device is transmitted. The trouble of installing the computer device can be saved. In addition, since image data can be transmitted to the image projection apparatus in advance, it is possible to perform a process of switching an image projected from the image projection apparatus at high speed.

  According to the second aspect of the invention, since the rendered image data can be stored and the image can be displayed by the display means of the own remote operation device, the user of the remote operation device can perform image projection. The image projected by the apparatus can be confirmed.

  According to the invention described in claim 3, since the image data of the next page of the image data corresponding to the image projected by the image projection device is displayed on the display means, the user of the remote control device can The content of the next page of the image can be confirmed in advance by the remote control device at hand, and the presentation can be progressed more smoothly.

  According to the fourth aspect of the present invention, the comment information corresponding to the image projected by the image projection device can be displayed by the display means, so that the user of the remote control device is related to the projection image. The comment can be confirmed by the remote control device at hand, and the progress of the presentation can be performed more smoothly.

  According to the fifth aspect of the present invention, the image data of the next page and the comment information of the current page can be selected and displayed on the display means. The display switching operation can be easily performed, and the presentation can be progressed more smoothly.

  According to the invention described in claim 6, since the image projected by the image projection apparatus can be selected by specifying the identification information of the image data, it is possible to easily specify the image data. .

  According to the seventh aspect of the present invention, when the image data of the page designated by the user of the remote control device has not been transmitted yet, the designated page is preferentially rendered regardless of the page order. Therefore, the designated image can be projected quickly.

  According to the eighth and ninth aspects of the present invention, the image data sequentially transmitted from the remote operation device is stored in the storage means, and the image data corresponding to the image data designation signal transmitted from the remote operation device is stored. Since it is taken out from the means and an image corresponding to the taken-out image data is projected, it is possible to save the trouble of installing the computer device during the presentation. In addition, since the image data can be received from the remote control device in advance, the switching process of the image projected from the image projection device can be performed at high speed.

[1. Overview of image projection system S]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an image projection system S in the present embodiment, FIG. 2 is a diagram showing an outline of the operation of the image projection system in the present embodiment, FIG. 3 is an external view of a remote control device in the present embodiment, and FIG. It is a figure which shows the example of a display of the remote control apparatus in this embodiment.

  As shown in FIG. 1, the image projection system S in this embodiment includes a remote control device 1 and an image projection device 2. The remote control device 1 transmits image data to the image projection device 2 by wireless communication and has a function of selecting an image to be projected by the image projection device 2. The image projection device 2 has a function of receiving image data from the remote operation device 1 by wireless communication and projecting an image corresponding to the image data on a screen.

  The wireless communication between the remote operation device 1 and the image projection device 2 employs infrared data communication using infrared rays. Note that. Wireless communication using visible light instead of infrared light may be used, and wireless communication using a wireless LAN such as the IEEE 802.11 standard may be used.

  The remote control device 1 includes a storage medium drive that reads data stored in a storage medium such as a memory card and writes data to the storage medium, and has a predetermined format stored in the memory card via the storage medium drive. File data is acquired and stored in a storage unit that functions as a file data storage unit. The file data in the presentation format will be described as an example of the file data in the predetermined format, but it may be a document file. In addition, the file data may be acquired from another device via a wired cable such as a USB cable, or may be acquired from another device using wireless communication. The presentation format file data includes information for each page of the presentation (hereinafter referred to as “page information”). Information on this page includes information on each object such as characters and figures (for example, information on font, size, color, placement coordinates, etc. for character objects), page setting information (for example, page number and vertical writing horizontally) ), Comment information (here, text data), and the like are included. Note that the “page” here may be an image unit projected and displayed by the image projection device 2, and does not necessarily have to be a piece of continuous information, but is separated into individual pieces (for example, a plurality of pieces) It may be individual slides in file data in which slides are collected.

  The remote operation device 1 executes a presentation program stored in the device itself, thereby extracting and rendering (image generation processing) one page of information from a plurality of pages included in the acquired file data. Thus, the process of generating one image data is continuously performed until the rendering of the information of the page of the predetermined number of pages or more among the information of the plurality of pages is completed. Thus, every time image data of one page is generated, the image data is transmitted to the image projection apparatus 2.

  For example, when the acquired file data includes information for n pages, the remote operation device 1 performs rendering by extracting information on the first page from the file data from the file data storage unit as shown in FIG. . When rendering of the first page is completed, the image data generated by the rendering is stored in the image data storage unit, and identification information is added to the image data and transmitted to the image projection apparatus 2. Thereafter, the same processing as the first page is continuously performed from the second to the nth page. The image projection device 2 stores the image data sequentially transmitted from the remote operation device 1 in the storage unit. As a method for adding identification information to image data, there are a method for including identification information in an image data name and a method for including identification information in a header portion when transmitting image data. In this embodiment, a page number is assigned as identification information. However, the present invention is not limited to this, and any information that can identify image data transmitted from the remote operation device 1 to the image projection device 2 is applicable. That's fine. Further, instead of continuously rendering information on all pages, information on pages of a predetermined number of pages (for example, 5 pages or 10 pages) may be continuously rendered.

  After that, when the user operates the operation unit of the remote operation device 1 as a page designating unit, the page m (1 ≦ m ≦ n) to be projected from the image projection device 2 among the image data transmitted to the image projection device 2. When the image data is selected, as shown in FIG. 2, the remote control device 1 transmits an image data designation signal for designating the selected image data. This image data designation signal includes identification information (here, page m) of the designated image data. The image projection device 2 takes out image data corresponding to the identification information included in the image data designation signal transmitted from the remote control device from the storage means, and projects an image corresponding to the extracted image data.

  In the remote operation device 1, the image data of the page designated by the user's operation, that is, the image data to be projected from the image projection device 2 (hereinafter also referred to as “image data to be projected”) has not been rendered yet. When not being transmitted to the image projecting device 2, the remote control device 1 preferentially generates image data to be projected from the image projecting device 2. For example, when the image data of the fourth page is selected as the projection target while the image data of the second page is being rendered, the image data to be rendered next is set to the fourth page instead of the third page.

  As described above, the image projection system S according to the present embodiment switches image data to be projected in order to render image data of all pages in advance with respect to file data having a plurality of page information and transmit the image data to the image projection apparatus 2. At this time, the time for transmitting the image data to the image projection apparatus 2 can be saved, and the process of switching the image projected from the image projection apparatus 2 can be performed at high speed.

  Here, as shown in FIG. 3, the remote operation device 1 includes a display device 103 that is a display unit such as an LCD (Liquid Crystal Display), a power switch 120, a cross key 121 that is an up / down / left / right key, a cancel key 122, and a determination key. A key 123, a current screen / next screen / comment switch 124, and the like are provided.

  The power switch 120 is a switch for activating the remote operation device 1, and when the remote operation device 1 is activated by operating the power switch 120, a file in a predetermined format stored in the memory card via the storage medium drive A data list is displayed on the display device 103. The user of the remote operation device 1 operates the cross key 121, the cancel key 122, the enter key 123, and the like to select desired file data from the displayed list. The remote operation device 1 acquires the file data selected in this way from the memory card, and starts rendering for generating image data for each page as described above.

  The current screen / next screen / comment switching switch 124 is configured to project the image data corresponding to the image data designated by the image data designation signal, which is a three-stage slide switch, when the image projection apparatus 2 projects the image data. (Hereinafter referred to as “projection image data”) is extracted from the data storage unit 111 and displayed on the display device 103, and the next page of the projection image data is extracted from the data storage unit 111. Next screen display mode displayed on the display device 103 and an image based on comment information corresponding to the projection image data (hereinafter referred to as “comment image”) is extracted from the data storage unit 111 and displayed on the display device 103. A switch for switching between modes (corresponding to an example of a display switching operation means).

  In the next screen display mode and the comment display mode, image data to be displayed on the display device 103 has display contents as shown in FIG. 4, for example. The image data used in the next screen display mode is the same as the image data transmitted to the image projection device 2, but the resolution may be reduced to reduce the data size. The image data used in the comment display mode is generated by extracting and rendering comment information from the acquired file data.

  By switching to the next screen display mode, the user of the remote control device 1 has the content of the image data of the next page of the image projected by the image projection device 2 (hereinafter referred to as “projection image”) at hand. It can be confirmed in advance by the remote control device, and the presentation can be progressed more smoothly. Further, by switching to the comment display mode, the user of the remote operation device 1 can check the comment related to the projection image with the remote operation device 1 at hand, and the presentation can be progressed more smoothly.

[2. Specific Configuration of Image Projection System S]
Hereinafter, the configuration of the image projection system S in the present embodiment will be described more specifically in the order of the remote control device 1 and the image projection device 2 with reference to the drawings.

(Regarding the configuration of the remote control device 1)
First, the configuration of the remote control device 1 will be described. FIG. 5 is a configuration diagram of the remote operation device 1 according to the present embodiment, and FIG. 6 is a diagram illustrating an example of a transmission state information table of the remote operation device 1.

  As shown in FIG. 5, the remote operation device 1 includes a CPU 101 as a control unit that controls the entire device, a memory 102 used as a working memory when the CPU 101 operates, the display device 103 described above, The switch group 104 including the power switch 120, the cross key 121, the cancel key 122, the enter key 123, the current screen / next screen / comment switch 124, and the like, and detects that the switch group 104 is operated by the user. An input interface 105 for notifying the CPU 101, a secondary storage device 106 for storing various software, image data, file data, and the like, and an infrared data projection unit for commands such as image data and page switching commands stored in the secondary storage device 106 Control to transmit from infrared by 108 An external line control unit 107, an infrared light projecting unit 108 including an infrared LED, and the like, a memory card interface 109 which is a storage medium drive for reading and acquiring file data of a predetermined format stored in a memory card (not shown), It has.

  The secondary storage device 106 includes a software storage unit 110 that stores a remote control device control program and a presentation program, and file data in a predetermined format acquired from the memory card interface 109 and image data generated by executing the presentation program. It has a data storage unit 111 for storing (including comment image data) and a transmission state information table storage unit 112 for storing a transmission state information table to be described later, and is configured by a nonvolatile memory such as a flash ROM. . The data storage unit 111 functions as the above-described file data storage unit and image data storage unit.

  The CPU 101 reads out the remote control device control program and the presentation program from the software storage unit 110 and executes them to obtain file data in a predetermined format via the memory card interface 109, and to obtain the acquired file data. Rendering means for continuously performing processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included until rendering for all of the information of the plurality of pages is completed, Each time image data of one page is generated by the rendering unit, the image data transmitting unit transmits the image data together with the identification information to the image projecting device 2, and the image projecting device 2 out of the image data transmitted to the image projecting device 2 Thrown by Designation signal transmission means for transmitting an image data designation signal including identification information of image data to be designated for designating image data to be displayed, and display control for displaying the image data stored in the secondary storage device 106 on the display device 103 It functions as a means.

  Here, when the CPU 101 functions as a rendering unit, if the image data of the identification information included in the image data designation signal has not yet been generated, the image data to be generated next is the identification information designated by the image data designation signal. Image data. In addition, comment information corresponding to image data generated by rendering is extracted from the file data and rendered, so that comment image data, which is image data of the comment information, is also generated for each page and stored in the secondary storage device 106. Remember. Further, a page number as an identification number is assigned to the image data generated by rendering. Here, the page number is the same as the page number of the information of each page included in the file data.

  Further, when the CPU 101 functions as an image data transmission unit, the CPU 101 records the transmission state of the rendered image data in the transmission state information table. An example of this transmission status information table is shown in FIG. In this example, the image data for the first to fifth pages has already been transmitted to the image projection apparatus 2, the image data for the sixth page is being transmitted to the image projection apparatus 2, and the image data for the seventh and subsequent pages has not been transmitted. It shows a certain state. The CPU 101 updates this transmission status information table periodically or when transmission of image data starts and ends.

  When the CPU 101 functions as a display control unit, the display mode is switched among the current screen display mode, the next screen display mode, and the comment display mode in accordance with the operation of the current screen / next screen / comment switch 124. That is, when the current screen display mode is selected by operating the current screen / next screen / comment switch 124, the image data corresponding to the image projected by the image projection device 2 is extracted from the data storage unit 111 and displayed. Display on the device 103. When the next screen display mode is selected by operating the current screen / next screen / comment switching switch 124, the image data of the next page of the image data corresponding to the image projected by the image projection device 2 is stored as data. It is taken out from the storage unit 111 and displayed on the display device 103. Further, when the comment display mode is selected by operating the current screen / next screen / comment switching switch 124, the comment storage data of the comment information corresponding to the image data projected by the image projection device 2 is stored in the data storage unit 111. And is displayed on the display device 103.

(Specific operation of remote control device 1)
An example of a specific operation of the remote control device 1 configured as described above will be described with reference to FIGS. FIG. 7 is a main process flowchart of the remote control device 1 in this embodiment.

  First, when the power switch 120 of the remote operation device 1 is pressed, the CPU 101 of the remote operation device 1 performs an initialization process in step S100. This initialization process is a process of steps S110 to S115 in FIG. 8, and will be described later.

  When the process of step S100 ends, the CPU 101 shifts the process to the mode-dependent operation process of step S101. This mode-dependent operation processing is processing in steps S120 to S123 in FIG. 9, steps S130 to S134 in FIG. 10, and steps S140 to S151 in FIG. 11, and will be described later.

  When the process of step S101 ends, the CPU 101 shifts the process to the background operation process of step S102. This background operation process is the process of steps S160 to S166 of FIG. 12, and will be described later.

  When the process of step S102 ends, the CPU 101 determines whether or not to end the main process (step S103). Whether or not to end the main process is determined by whether or not the power switch 120 is pressed. That is, when the power switch 120 is pressed, it is determined that the main process is finished.

  In this process, if it is determined that the main process is to be ended (step S103: Yes), the CPU 101 ends the main process, and if it is determined that the main process is not to be ended (step S103: No), the process returns to step S101. .

  Next, the initialization process in S100 will be specifically described with reference to the flowchart of FIG. FIG. 8 is an initialization process flowchart of the remote control device 1 in this embodiment.

  In this initialization process, first, the CPU 101 executes the following file selection process by reading and executing the remote operation device control program from the secondary storage device 106.

  As shown in FIG. 8, the CPU 101 reads file data in a predetermined format from the data storage unit 111 of the secondary storage device 106 (step S110). Whether there is file data in a predetermined format is determined by the extension of the file data. Here, the data storage unit 111 stores two file data, “Presentation 1.XYZ” and “Presentation 2.XYZ”, and the CPU 101 has a predetermined format when the extension is “XYZ”. File data.

  Next, the CPU 101 displays a file name (“Presentation 1” and “Presentation 2”) of the file data determined to be file data in a predetermined format so as to be selectable by operating the cross key 121 or the enter key 123. The selection screen is displayed on the display device 103 (step S111), and the process proceeds to step S112.

  In step S112, the CPU 101 determines whether file data has been selected (step S112). This determination is based on whether or not the enter key 123 is pressed, and is file data in which the file name of the file name where the cursor is located when the enter key 123 is pressed is selected.

  If it is determined in this process that file data has been selected (step S112: Yes), the CPU 101 proceeds to step S113.

  In step S113, the CPU 101 reads out and executes the presentation program from the secondary storage device 106, thereby starting the presentation program and functioning as each of the above-described means.

  Next, the CPU 101 initializes the transmission state information table stored in the transmission state information table storage unit 112 (step S114), and proceeds to step S115. As shown in FIG. 6, this transmission status information table is a table in which a status flag is associated with each page number that is an identification number of image data. The initialization of this table is performed by the file data selected in step S112. This is done by determining the number of pages to be rendered from the information contained in and creating a table for the number of pages. At this time, the status flag corresponding to each page is set to “unsent”.

  In step S115, the CPU 101 transmits a table creation command, which is a request for generating a reception state information table, to the image projection apparatus 2, and ends the initialization process.

  Next, details of the mode-dependent operation processing in step S101 will be described with reference to the drawings. 9 is a mode-dependent operation process flowchart of the remote operation device 1 according to the present embodiment, FIG. 10 is an edit mode process flowchart of the remote operation device 1 according to the present embodiment, and FIG. 11 is a presentation mode process of the remote operation device 1 according to the present embodiment. It is a flowchart.

  As shown in FIG. 9, when the CPU 101 starts the mode-dependent operation process, it first determines whether or not the edit mode is selected (step S120). Note that whether or not the editing mode is set depends on the state of the application. That is, the CPU 101 determines whether or not the edit mode is selected by determining whether or not the application state is the edit mode.

  If it is determined in this process that the edit mode is set (step S120: Yes), the CPU 101 executes an edit mode process (step S121). This edit mode process is the process of steps S130 to S134 of FIG. 10, and will be described later.

  If it is determined that the edit mode is not set (step S120: No), the CPU 101 determines whether the presentation mode is set (step S122). That is, the CPU 101 determines whether or not the presentation mode is set by determining whether or not the application state is the presentation mode.

  If it is determined in this process that the presentation mode is set (step S122: Yes), the CPU 101 executes a presentation mode process (step S123). This presentation mode process is a process of steps S140 to S151 in FIG. 11, and will be described later.

  In step S122, when it is determined that the presentation mode is not set (step S122: No), or when the process of step S121 and the process of step S123 are completed, the CPU 101 ends the mode-dependent operation process.

  Next, the edit mode process in step S121 will be described.

  As shown in FIG. 10, the CPU 101 determines whether the user has updated the page (step S130). Whether or not the user has updated the page is determined by whether or not the information on the page of the file data selected in step S112 (see FIG. 8) has been changed and updated. That is, when the file data page information is updated, it is determined that the user has updated the page.

  In this process, if it is determined that the user has updated the page (step S130: Yes), the CPU 101 sets the status flag corresponding to the updated page in the transmission status information table stored in the transmission status information table storage unit 112 to “updated”. (Step S131). For example, when the information on the second page is updated, the status flag on the second page is set to “updated”.

  When the process of step S131 is completed or when it is determined in step S130 that the user has not updated the page (step S130: No), the CPU 101 determines whether or not the user has added or deleted the page (step S130: No). Step S132). Whether or not the user has added or deleted a page is determined based on whether or not information on one page included in the file data selected in step S112 (see FIG. 8) has been deleted, or new page information is included in the file data. Judgment is made based on whether or not it has been added. That is, when the user adds page information to the file data or deletes page information, it is determined that the user has added or deleted a page. The addition and deletion of pages are performed by displaying the image data stored in the data storage unit 111 on the display device 103 and operating a predetermined button of the switch group 104 by the processing of the CPU 101. In this way, the user can edit the page of the file data while looking at the display device 103, so that the presentation can be easily corrected even before or during the presentation start.

  In this process, when the CPU 101 determines that the user has added or deleted a page (step S132: Yes), the CPU 101 changes the format of the transmission state information table (step S133). For example, when a page is added between the 5th page and the 6th page in the file data having information of 10 pages in total, the information on the 6th page to the 10th page is changed to the 7th page in the transmission status information table. The information flag of the 11th page is set to “unsent”.

  When the update or change of the transmission state information table is completed, the CPU 101 transmits a table format change command to the image projection apparatus 2 (step S134). This table format change command includes page update information, additional information, or deletion information, and the image projection apparatus 2 updates or changes a reception state information table described later by this table format change command.

  When it is determined that the user has not added or deleted a page (step S132: No), or when the process of step S134 is completed, the CPU 101 ends the edit mode process.

  Next, the presentation mode process in step S123 will be described.

  As shown in FIG. 11, when starting the presentation mode process, the CPU 101 determines whether or not the page switching button has been pressed (step S140). Here, the cross key 121 is used as the page switching button. The upper key of the cross key 121 functions as a button for switching to the next page, and the lower key functions as a button for switching to the previous page. Further, the remote operation device 1 is provided with 10 keys (numeric keys from 0 to 9) (not shown) as the switch group 104, and even when a page number designated by the 10 keys is input, The CPU 101 determines that the page switching button has been pressed.

  In this process, when it is determined that the page switching button has been pressed (step S140: Yes), the CPU 101 transmits a page switching command as an image data designation signal to the image projection apparatus 2 (step S141). This page switching command is an image data designation signal for designating image data to be projected by the image projecting device 2, and the image projecting device 2 selects image data corresponding to the page switching command and selects the image thus selected. Project an image based on the data.

  When it is determined in step S140 that the page switching button has not been pressed (step S140: No), or when the process of step S141 ends, the CPU 101 switches the page switched in step S140 (hereinafter, switched in this way). It is determined whether or not the image data of “the current page” is referred to as “current page”) is being transmitted to the image projection apparatus 2 or has been transmitted (step S142). That is, in the background operation process described later, it is determined whether the image data of the current page is being transmitted or has been transmitted.

  In this process, if it is determined that the image data of the current page is being transmitted or has not been transmitted (step S142: No), the CPU 101 stops the transmission when the image data is being transmitted in the background operation process ( In step S143), by executing the presentation program by the CPU 101, information on the current page is extracted from the file data selected in step S112 and rendered to generate image data of the current page and store it in the data storage unit 111. (Step S144). Also, the comment information of the current page is read from the file data and rendered, and comment image data is generated and stored in the data storage unit 111.

  After generating the image data of the current page, the CPU 101 adds a file name and a page number to the image data (step S145), transmits an image transmission command to the image projection apparatus 2, and then transmits the image data of the current page. Transmission of image data is started (step S146).

  Thus, when the image data of the page specified by the user is not yet transmitted in step S140, the specified page is preferentially rendered and transmitted regardless of the page order. The projected image can be projected quickly.

  When it is determined in step S142 that the image data of the current page is being transmitted or has been transmitted (step S142: Yes), or when the process of step S146 is completed, the CPU 101 switches the current screen / next screen / comment switching switch 124. It is determined whether or not the next screen labeling mode is selected by the user's operation (step S147).

  In this process, if it is determined that the next screen display mode is selected (step S147: Yes), the CPU 101 extracts the image data of the page next to the page specified by the user from the data storage unit 111 in step S140. Is displayed on the display device 103 (step S148).

  If it is determined in step S147 that the next screen display mode is not selected (step S147: No), the CPU 101 selects the comment display mode by an operation of the current screen / next screen / comment switch 124. It is determined whether or not (step S149).

  In this process, when it is determined that the comment display mode is selected (step S149: Yes), the CPU 101 extracts the comment image data corresponding to the page designated by the user in step S140 from the data storage unit 111 and displays it. The information is displayed on the device 103 (step S150).

  If it is determined in step S149 that the comment display mode is not selected (step S149: No), the CPU 101 selects the current screen display mode by the operation of the current screen / next screen / comment switch 124. In step S140, the image data of the page specified by the user is extracted from the data storage unit 111 and displayed on the display device 103 (step S151).

  When the process of step S148, S150, or S151 ends, the CPU 101 ends the presentation mode process.

  As described above, in the presentation mode process, when the image data of the page specified by the user of the remote operation device 1 has not been transmitted yet, the specified page is preferentially rendered and transmitted regardless of the page order. Thus, the designated image can be projected quickly.

  In addition, since any one of the image data of the current page, the image data of the next page, and the comment information of the current page can be selected and displayed on the display device 103, the user of the remote operation device 1 can easily perform as necessary. Thus, the display switching operation can be performed, and the presentation can be progressed more smoothly. When the screen size of the display device 103 is large, any two of the current page image data, the next page image data, and the current page comment information are displayed on the display device 103 by the user's selection. May be. Further, a plurality of display devices 103 may be provided to display different data contents for each display device.

  Next, details of the background operation processing in step S102 in FIG. 7 will be described with reference to FIG. FIG. 12 is a background operation process flowchart of the remote control device 1 according to this embodiment.

  As shown in FIG. 12, when starting the background operation process, the CPU 101 first determines whether image data is being transmitted to the image projection apparatus 2 (step S160).

  If it is determined in this process that image data is not being transmitted (step S160: No), the CPU 101 determines whether there is untransmitted or updated image data (step S161). That is, the CPU 101 retrieves the transmission status information table from the transmission status information table storage unit 112 and determines whether there is a status flag “not transmitted” or “updated”.

  In this process, if it is determined that there is untransmitted or updated image data (step S161), a page that is being projected by the image projection apparatus 2 among the untransmitted or updated image data by executing the presentation program by the CPU 101. A page with a smaller page number is preferentially selected from the next page, information on this page number is extracted from the file data selected in step S112, rendered, and image data is generated and stored in the data storage unit 111. (Step S162). Also, the comment information of this page is read from the file data and rendered, and comment image data is generated and stored in the data storage unit 111. Note that image data (including comment image data) generated by rendering may be stored in the memory 102 instead of the data storage unit 111 of the secondary storage device 106.

  After generating the image data in step S162, the CPU 101 adds a file name and a page number to the image data (step S163), transmits an image transmission command to the image projection apparatus 2, and then stores the image data. Transmission is started (step S164).

  When it is determined in step S160 that image data is being transmitted (step S160: Yes), when it is determined in step S161 that there is no untransmitted or transmitted image data (step S161: No), or processing in step S164 When the process ends, the CPU 101 shifts the process to step S165.

  In step S165, it is determined whether transmission of the image data started in step S164 or step S146 is completed (step S165).

  In this process, when it is determined that the transmission of the image data is completed (step S165: Yes), the CPU 101, among the information stored in the transmission state information table, the page of the image data that has been transmitted in step S164 or step S146. The status flag corresponding to the number is updated to “transmitted” (step S166).

  In step S165, when it is determined that the transmission of the image data has not been completed (step S165: No), or when the process of step S166 ends, the CPU 101 ends the background operation process.

  As described above, the remote operation device 1 according to the present embodiment generates a plurality of image data by successively rendering page information included in file data of a predetermined format for each page, and the image data is converted into an image. By transmitting to the projection device, the image data desired to be projected on the image projection device 2 can be stored in the image projection device 2 in advance, so that the process of switching the image projected from the image projection device can be performed at high speed.

  In addition, as long as the file data for presentation to be projected by the image projecting device 2 is stored in the memory card, an image corresponding to the file data can be easily projected from the image projecting device 2, so that the presentation can be performed. It can be done very easily.

(Regarding the configuration of the image projector 2)
Next, the configuration of the image projection device 2 will be described. FIG. 13 is a configuration diagram of the image projection apparatus 2 in the present embodiment, and FIG. 14 is a diagram illustrating an example of a reception state information table of the image projection apparatus 2.

  As illustrated in FIG. 13, the image projection apparatus 2 includes a storage device 201 including a RAM (Random Access Memory), a control panel 202 for performing various operations, and a control unit that controls the entire image projection apparatus 2. 203, a non-volatile memory 204 for holding setting information, an infrared communication unit 206 that performs wireless communication by infrared, a video signal input circuit 207 that inputs a video signal from the outside, and a video signal input circuit 207 And a projection unit 208 that projects an image based on the video signal input and the image data stored in the storage device 201, and these are built in the housing.

  The storage device 201 stores an image data storage unit (corresponding to an example of a storage unit) 205 that stores image data sequentially transmitted from the remote operation device 1 and a reception that stores the reception status of image data from the remote operation device 1. A reception state information table storage unit 212 for storing a state information table. When receiving image data transmitted from the remote operation device 1 via the infrared communication unit 206, the control unit 203 stores the received image data in the image data storage unit 205. Further, when receiving the image data from the remote operation device 1, the control unit 203 records the file name and reception state of the image data in the reception state information table. An example of this reception state information table is shown in FIG. In this example, reception of image data for the first to fifth pages is completed, image data for the sixth page is being received, and image data for the seventh and subsequent pages has not been received. The control unit 203 updates the reception state information table periodically or when reception of image data starts and ends. The image data sequentially transmitted from the remote control device 1 is bitmap format image data, and its extension is “bmp”.

  The control panel 202 is provided at a position that can be operated by the user in the image projection apparatus 2, that is, an appropriate position on the outer wall surface of the housing, and the user operates the control panel 202 according to the operation content. The control unit 203 executes control.

  The control unit 203 includes a CPU, a ROM, a RAM, and the like, and functions as a control unit when the CPU reads and executes a program stored in advance in the ROM. The RAM is used as a working memory.

  The nonvolatile memory 204 is composed of, for example, a flash memory, and holds various setting information.

  The infrared communication unit 206 includes an infrared light receiving unit 210 configured by an infrared LED and the like, and an infrared control unit 211 that performs processing for converting the infrared signal received by the infrared light receiving unit 210 into data.

  The video signal input circuit 207 inputs video signals such as composite video signals (for example, NTSC video signals) and component video signals (for example, RGB signals).

  The projection unit 208 includes a lamp driving circuit 220, a light source 221, an illumination optical system 222, a transmissive liquid crystal panel 223 (hereinafter referred to as “LCD 223”), an imaging optical system 224, and an image processing circuit 225. , An LCD drive circuit 226 and a focus adjustment circuit 227 are provided.

  The light source 221 is composed of a lamp or the like, and is driven to light up to emit light based on a signal output from the lamp driving circuit 220 controlled by the control unit 203. The light emitted from the light source 221 is irradiated on the LCD 223 as illumination light by the illumination optical system 222.

  The image processing circuit 225 performs processing such as addition or change of a signal on the video signal input to the video signal input circuit 207 or the image data received by the infrared communication unit 206 based on control by the control unit 203. The image signal generated by such processing is input to the LCD drive circuit 226.

  The LCD 223 is driven by the LCD drive circuit 226 and displays an image on its display surface. The image thus displayed is emitted from the LCD 223 as light by the illumination light from the illumination optical system 222. Subsequently, the emitted light passes through the imaging optical system 224 and the projection opening of the housing and is projected onto the screen (projection surface). As described above, the image displayed on the LCD 223 is projected onto the screen. Note that the focus adjustment mechanism can adjust the focus of the image projected on the screen.

(Specific operation of the image projector 2)
An example of a specific operation of the image projection apparatus 2 configured as described above will be described with reference to FIGS. FIG. 15 is a main process flowchart of the image projection apparatus 2 in the present embodiment.

  As shown in FIG. 15, when a power switch (not shown) of the image projection apparatus 2 is pressed, the control unit 203 of the image projection apparatus 2 performs a command waiting process in step S200. This command waiting process is a process of steps S210 to S222 in FIG. 16, and will be described later.

  When the process of step S200 ends, the control unit 203 shifts the process to the image storage process of step S201. This image storage process is the process of steps S230 to S232 of FIG. 17 and will be described later.

  When the process of step S201 ends, the control unit 203 proceeds to the image switching process of step S202. This image switching process is a process of steps S240 to S245 in FIG. 18 and will be described later.

  When the process of step S202 ends, the control unit 203 determines whether or not to end the main process (step S203). Whether or not to end the main processing is determined by whether or not a power switch (not shown) is pressed. That is, when the power switch is pressed, it is determined that the main process is finished.

  In this process, when it is determined that the main process is to be ended (step S203: Yes), the control unit 203 ends the main process, and when it is determined that the main process is not to be ended (step S203: No), the process is changed to step S200. Return to.

  Next, the command waiting process in S200 will be specifically described with reference to the flowchart of FIG. FIG. 16 is a command waiting process flowchart of the image projection apparatus 2 in the present embodiment.

  As shown in FIG. 16, when the command waiting process is started, the control unit 203 first determines whether or not a command from the remote operation device 1 has been received via the infrared communication unit 206 (step S210).

  If it is determined in this process that a command has been received (step S210: Yes), the control unit 203 determines whether or not the received command is a table creation command (step S211).

  When the received command is a table creation command (step S211: Yes), a reception state information table having a size corresponding to the number of pages is generated (step S212). That is, the control unit 203 generates a reception state information table based on the page number information included in the table creation command. For example, if the page number information is 10 pages, a reception status information table that can store file names and status flags from 1 to 10 pages in association with the respective pages is generated.

  Next, the control unit 203 initializes the reception state information table of the reception state information table storage unit 212 by storing the reception state information table generated in step S212 in the reception state information table storage unit 212 (step S213). ).

  If it is determined in step S211 that the received command is not a table creation command (step S211: No), the control unit 203 determines whether the received command is a table format change command (step S211). S214).

  In this process, when it is determined that the received command is a table format change command (step S214: Yes), the control unit 203 extracts page update information, page addition information, or page deletion information included in the format change command. Then, the process of changing the contents of the reception status information table is started (step S215).

  First, the control unit 203 changes the table size of the reception state information table stored in the reception state information table storage unit 212 based on the extracted page addition information or page deletion information (step S216). For example, when the reception status information table is a table that can store information on pages 1 to 10 and the information included in the format change command is page addition information for adding the sixth page, the reception status information table The information on page 11 is added, and the table is changed to a table for storing information on pages 1-11. Further, when the reception status information table is a table capable of storing information of 1 to 10 pages and the information included in the format change command is page deletion information for deleting the sixth page, the reception status information table The information on page 6 is deleted, and the table is changed to a table that stores information on pages 1-5, 7-10. Note that when the information extracted from the table format change command is page update information, the control unit 203 does not change the table size.

  Thereafter, the control unit 203 changes the page number of the reception state information table (step S217). For example, when the reception status information table is a table that can store information on pages 1 to 10 and the information included in the format change command is page addition information for adding the sixth page, the reception status information table The information on the sixth page to the tenth page is set as the information on the seventh page to the eleventh page, and the status flag of the information on the sixth page is set to “untransmitted”. Further, when the reception status information table is a table capable of storing information of 1 to 10 pages and the information included in the format change command is page deletion information for deleting the sixth page, the reception status information table The information on the 7th to 10th pages is the information on the 6th to 9th pages. Note that when the information extracted from the table format change command is page update information, the control unit 203 does not change the page number.

  Next, the control unit 203 deletes unnecessary image data from the image data storage unit 205 (step S218). That is, when the information included in the table format change command is page deletion information, if it is determined that the image data of the page to be deleted is stored in the image data storage unit 205, the image of the page to be deleted Data is deleted from the image data storage unit 205.

  If it is determined in step S214 that the received command is not a table format change command (step S214: No), the control unit 203 determines whether the received command is an image transmission command (step S219). .

  In this process, when it is determined that the received command is an image transmission command (step S219: Yes), the control unit 203 starts receiving image data transmitted following the image transmission command (step S220).

  If it is determined in step S219 that the received command is not an image transmission command (step S219: No), the control unit 203 determines whether the received command is a page switching command that is an image data designation signal. (Step S221).

  In this process, if it is determined that the received command is a page switching command (step S221: Yes), the control unit 203 updates the display page number (step S222). That is, the page number included in the page switching command as the image data designation signal is stored in the storage device 201 as the display page number. Then, the control unit 203 extracts the image data of the display page number stored in the storage device 201 from the image data storage unit 205 based on the reception state information table, and projects an image based on the extracted image data in this way. Project by. The page switching command may include a request to switch to the previous page or a request to switch to the next page without including the page number. In this case, the page switching command may include this request based on the display page number stored in the storage device 201. The display page number will be updated. That is, the display page number stored in the storage device 201 is “8”, and when the previous page switching request is received, the display page number stored in the storage device 201 is updated from “8” to “7”. When the display page number stored in the storage device 201 is “8” and the next page switching request is received, the display page number stored in the storage device 201 is updated from “8” to “9”.

  When it is determined in step S210 that no command is received (step S210: No), when it is determined that the command received in step S221 is not a page switching command (step S221: No), or steps S213, S218, S220. , S222, the control unit 203 ends the command waiting process.

  Next, the image storage process in S201 will be specifically described with reference to the flowchart of FIG. FIG. 17 is an image storage processing flowchart of the image projection apparatus 2 in the present embodiment.

  As shown in FIG. 17, when the image storage process is started, the control unit 203 determines whether or not the reception of the image data started to be received in step S220 is completed (step S230).

  In this process, when it is determined that the reception of the image data is completed (step S230: Yes), the control unit 203 stores the received image data in the image data storage unit 205 (step S231), and further, this image The file name and status flag of the reception status information table relating to the page corresponding to the data are updated (step S232). The status flag is updated by changing it to “Received”. The file name to be updated is the file name of the image data that has been received in step S230.

  Next, the image switching process in S202 will be specifically described with reference to the flowchart of FIG. FIG. 18 is an image switching process flowchart of the image projection apparatus 2 in the present embodiment.

  As shown in FIG. 18, when the image saving process is started, the control unit 203 determines whether or not the display page has been switched, that is, whether or not a page switching command has been received in step S221 (step S240).

  In this process, if it is determined that the display page has been switched (step S240: Yes), the control unit 203 determines whether image data corresponding to the display page to be switched is received (step S241). Whether or not the image data corresponding to the switching destination display page is received is determined by whether or not the file name of the image data of the switching destination display page exists in the reception state information table. For example, when the page number of the image data designated by the page switching command is “8” and the reception status information table is in the state shown in FIG. 14, the control unit 203 displays the switching destination display page. It is determined that the corresponding image data (image data of page number “8”) has not been received.

  In this process, if it is determined that the image data corresponding to the display page is received (step S241: Yes), the control unit 203 acquires the file name from the reception state information table (step S242), and acquires in this way. The image data having the file name is read from the image data storage unit 205 (step S243).

  Thereafter, the control unit 203 projects and displays an image based on the image data read from the image data storage unit 205 from the projection unit 208 (step S244).

  If it is determined in step S241 that the display page has not been received (step S241: No), the control unit 203 displays an image based on the image data for displaying that the display page is being received from the storage device 201. The image is projected from the projection unit 208 and displayed (step S245).

  As described above, the image projection apparatus 2 according to the present embodiment receives image data from the remote operation apparatus 1 in advance, and based on the stored image data in accordance with the page switching command transmitted from the remote operation apparatus 1. Since the projected image is projected, the switching process of the image projected from the image projection device 2 can be performed at high speed.

  As mentioned above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and the present invention is variously modified and improved based on the knowledge of those skilled in the art. It is possible to carry out the invention.

  For example, the information on the page of only the file data selected by the user in the remote operation device 1 is rendered and continuously transmitted to the image projecting device 2. You may make it transmit to the apparatus 2 continuously. For example, when there are a plurality of file data of a predetermined format stored in the memory card, the CPU 101 acquires all of them, continuously renders information of all pages of all the file data, and continuously to the image projection apparatus 2. And may be transmitted. In this case, the transmission state information table in the remote operation device 1 is generated for each file data, and the reception state information table in the image projection device 2 is similarly generated for each file data.

  Further, the CPU 101 selects and obtains one of the file data of a predetermined format stored in the memory card, which has the latest update date and time, and continuously selects the page information of the file data thus selected. Then, it may be rendered and transmitted continuously to the image projection apparatus 2.

  Further, in the above embodiment, the image data to be displayed on the display device 103 of the remote operation device 1 is switched according to the image projected by the image projection device 2, but the display of the display device 103 is displayed on the switch group 104. A button for switching only the contents is provided, and when this button is operated, transmission of a page switching command to the image projection apparatus 2 is stopped and the contents of only the display apparatus 103 are switched under the control of the CPU 101. Good. In this way, the content of the image data stored in the data storage unit 111 is not projected from the image projection device 2, and the content of the file data can be easily confirmed and corrected even before the presentation or during the presentation. .

  In the above embodiment, the comment image data is also generated when the remote operation device 1 generates the image data for projection. However, when the comment display mode is switched, the necessary comment on the page is appropriately selected. Information may be read from file data and displayed after rendering.

  In the above embodiment, the current screen / next screen / comment switching switch is operated by the user to switch between the current screen display mode, the next screen display mode, or the comment display mode, and display contents on the display device 103 are changed. However, when the screen size of the display device 103 is large, these may be displayed at the same time, or a combination of two display modes, for example, the next screen display mode and the comment display mode. You may make it display simultaneously with the combination.

1 is an overall configuration diagram of an image projection system in the present embodiment. It is a figure which shows the operation | movement outline | summary of the image projection system in this embodiment. It is an external view of the remote control device in the present embodiment. It is a figure which shows the example of a display of the remote control apparatus in this embodiment. It is a block diagram of the remote control apparatus in this embodiment. It is a figure which shows the example of the transmission status information table of the remote control apparatus in this embodiment. It is a main process flowchart of the remote control apparatus in this embodiment. It is an initialization process flowchart of the remote control apparatus in this embodiment. It is a mode dependent operation processing flowchart of the remote control device in the present embodiment. It is an edit mode process flowchart of the remote control device in this embodiment. It is a presentation mode process flowchart of the remote control apparatus in this embodiment. It is a background operation | movement process flowchart of the remote control apparatus in this embodiment. It is a block diagram of the image projector in this embodiment. It is a figure which shows the example of the reception status information table of the image projector in this embodiment. It is a main process flowchart of the image projector in this embodiment. It is a command waiting process flowchart of the image projector in this embodiment. It is an image preservation | save process flowchart of the image projector in this embodiment. It is an image switching process flowchart of the image projector in this embodiment.

Explanation of symbols

S Image Projection System 1 Remote Control Device 2 Image Projection Device 101 CPU
103 Display device 106 Secondary storage device 201 Storage device 203 Control unit 208 Projection unit

Claims (11)

In a remote control device for controlling an image projection device that receives image data and projects an image based on the image data,
File acquisition means for acquiring file data in a predetermined format;
Processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included in the obtained file data is performed for pages of a predetermined number of pages or more among the information of the plurality of pages. Rendering means that performs continuously until rendering of information is completed,
Each time image data of one page is generated by the rendering means, image data transmitting means for transmitting the image data to the image projection device;
Designation signal transmission means for transmitting an image data designation signal for designating image data to be projected by the image projection apparatus among the image data transmitted to the image projection apparatus;
A remote control device characterized by comprising: Image data storage means for storing image data generated by the rendering means;
Display means for displaying an image;
Display control means for displaying the image data stored in the image data storage means on the display means;
The remote control device according to claim 1, further comprising: The display control means takes out image data of the next page of image data corresponding to an image projected by the image projection device from the image data storage means and displays the image data on the display means. The remote control device according to 2. The rendering means includes
The comment information corresponding to the image data generated by the rendering is extracted from the acquired file data and rendered, thereby generating comment image data that is image data of the comment information,
The display control means includes
The remote operation device according to claim 2 or 3, wherein comment image data corresponding to image data projected by the image projection device is displayed on the display means. Comprising display switching operation means for switching display contents on the display means;
The display control means includes
Selecting one of the image data of the next page and the comment image data in accordance with an operation of the display switching operation means, and displaying an image based on the selected image data on the display means. The remote control device according to claim 4, wherein The image data transmission unit transmits identification information of the image data generated by the rendering unit together with the image data to the image projection device,
The remote control device according to claim 1, wherein the image data designation signal transmitted by the designation signal transmission unit includes designation of the identification information. The rendering means includes
When the image data of the identification information included in the image data designation signal has not yet been generated, the image data to be generated next is the image data of the identification information designated by the image data designation signal. Item 7. The remote control device according to item 6. An image projection device that projects an image based on image data transmitted from the remote control device according to any one of claims 1 to 7,
Storage means for storing image data sequentially transmitted from the remote control device;
Projection control means for taking out image data corresponding to an image data designation signal transmitted from the remote control device from the storage means, and projecting an image according to the taken image data;
An image projection apparatus comprising: An image projection system comprising: the remote control device according to claim 1; and an image projection device that projects an image based on image data transmitted from the remote control device.
The image projector is
Storage means for storing image data sequentially transmitted from the remote control device;
Projection control means for taking out image data corresponding to an image data designation signal transmitted from the remote control device from the storage means, and projecting an image according to the taken image data;
An image projection system comprising: A program for causing a computer to function as a remote control device that controls an image projection device that receives image data and projects an image based on the image data,
The computer,
File acquisition means for acquiring file data in a predetermined format;
Processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included in the obtained file data is performed for pages of a predetermined number of pages or more among the information of the plurality of pages. Rendering means that performs continuously until rendering of information is completed,
Each time image data of one page is generated by the rendering means, image data transmitting means for transmitting the image data to the image projection device;
Designation signal transmission means for transmitting an image data designation signal for designating image data to be projected by the image projection apparatus among the image data transmitted to the image projection apparatus;
Program to make it work. A remote control method in a remote control device for controlling an image projection device that receives image data and projects an image based on the image data,
Obtaining file data in a predetermined format;
Processing for generating one image data by extracting and rendering information of one page from information of a plurality of pages included in the obtained file data is performed for pages of a predetermined number of pages or more among the information of the plurality of pages. Continuous steps until the rendering of the information is finished,
Each time image data of one page is generated by the rendering, transmitting the image data to the image projection device;
Transmitting an image data designation signal for designating image data to be projected by the image projection device among the image data transmitted to the image projection device;
A remote control method comprising: