JP5351435B2 - Image reproduction apparatus, control method therefor, and program - Google Patents

Description

  The present invention relates to an image reproduction technique for reproducing image files having different attributes.

  Images taken with a digital camera are recorded as digital data on a recording medium in the digital camera. In addition, it is a common practice for relatives and acquaintances to gather together and enjoy viewing images by attaching recording media to an image playback device such as a projector and playing back captured images.

  On the other hand, in the field of handling still images, devices that can reproduce images sequentially with a specific story characteristic as well as simply storing images have appeared. In addition, devices that can be interactively played back in the form of dialogue with users have appeared, and are being developed in various fields including presentations. Some image data used for such continuous reproduction and interactive reproduction is created from a document, a figure, or the like.

  Such image data is recorded on a large-capacity recording medium such as an optical disk or a USB memory after the user performs a process such as data compression by a personal terminal such as a PC as necessary. When a presentation is given at a meeting or the like, continuous reproduction or interactive reproduction is performed by connecting a recording medium to a projector or the like. Here, the photographed image and the image used for the continuous reproduction and interactive reproduction are recorded together on the same recording medium.

  In addition, as an automatic image data reproduction method by a projector or the like, for example, a slide show reproduction in which image data is reproduced in order of file names or a specified order, or a random selection of file names and reproduction of image data in any order. There is random playback.

  For image data having a scheduled reproduction order, for example, document image data arranged in the page order, slide show reproduction for reproducing in a predetermined order is more suitable than random reproduction. That is, it is desirable that the playback procedure can be automatically switched according to the contents of the image data.

  In view of this, there has been proposed a technique for appropriately switching the reproduction procedure for each piece of image data (Patent Documents 1 and 2).

Also known is a method of converting a so-called slide in a file created with presentation software into an image file. According to this method, even a device that cannot handle presentation software can execute a presentation by sequentially reproducing the converted images.
Japanese Patent Laid-Open No. 10-285521 JP 2006-054738 A

  However, since an image captured with a digital camera or the like and an image generated for the purpose of presentation or the like have different uses for reproduction, it is necessary to provide a user with a reproduction method suitable for each.

  For example, in the case of an image taken with a digital camera or the like, it is conceivable to produce an effect that does not bore the user who browses the slide show by reproducing the image data in a random order.

  On the other hand, for the purpose of presentation, for example, there is almost no use for reproducing each image in a random order.

  Thus, when reproducing a plurality of image data having different characteristics, it is necessary to provide a reproduction method according to the image data to be reproduced.

In order to solve the above-described problem, an image reproduction apparatus according to the present invention is an image reproduction apparatus that reproduces an image file recorded on a storage medium, the acquisition unit that acquires the image file from the storage medium, and the acquisition A reproduction unit that sequentially reproduces the image file acquired by the unit, and whether the image file acquired by the acquisition unit and reproduced by the reproduction unit is an image file generated based on a document file Selection means and selection for allowing the user to select a selection item for executing a slide show that enables the change of the playback order of image files or a selection item for executing a slide show that disables the change of the playback order a control device for controlling the reproducing means so as to present a screen, wherein the control means includes a document by the determination unit files If it is determined that the image file is generated based on the file, the playback unit is configured to present a selection screen in which selection items for executing the slide show that allows the change of the playback order cannot be selected. To control .

The image playback apparatus control method according to the present invention is an image playback apparatus control method having playback means for playing back an image file recorded on a storage medium, and acquiring an image file from the storage medium A determination step of determining whether the image file acquired by the acquisition step and reproduced by the reproduction unit is an image file generated based on a document file, and a change in the reproduction order of the image files. The playback means is controlled so as to present a selection screen for allowing the user to select a selection item for executing a slide show that can be performed or a selection item for executing a slide show that cannot change the playback order. a control step, a, in the control step, the determination step by the is an image file generated based on the document file determine If it is, it controls the reproducing device to present a non-selectable selection screen choices for running a slide show to enable change of the reproduction order.

  According to the present invention, when reproducing a plurality of image data having different personalities, it is possible to provide a reproduction method according to the image data to be reproduced.

  Further, according to the present invention, when a plurality of image data having different characteristics are mixed, the image data having the scheduled reproduction order cannot be set as a random reproduction target. Therefore, it is possible to eliminate wasteful reproduction of image data having a predetermined reproduction order at random.

  The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

  The embodiment described below is an example as means for realizing the present invention, and should be appropriately modified or changed according to the configuration and various conditions of the apparatus to which the present invention is applied. It is not limited to the embodiment.

[First Embodiment]
FIG. 1 is a diagram showing a configuration of an image reproduction apparatus according to an embodiment of the present invention.

  Reference numeral 100 denotes a liquid crystal projector. A projection lens 118 of the liquid crystal projector 100 projects on the screen 119 and displays an image and a UI (user interface) screen on the screen 119. Reference numeral 1012 denotes a playback mode selection dialog, which will be described in detail later. The projection lens 118 includes a plurality of lenses, and can perform optical zoom / focus adjustment and the like.

  Reference numeral 106 denotes a USB I / F for USB connection with an external device. Reference numeral 200 denotes a USB memory, and the liquid crystal projector 100 can be connected to the USB memory 200 via the USB I / F 106. Reference numeral 400 denotes a remote controller (hereinafter referred to as a remote controller), and the liquid crystal projector 100 can receive an operation of the remote controller 400 as an infrared signal via the remote control light receiving unit 120. The communication medium of the system constructed in this embodiment may be a wired / wireless LAN, Bluetooth, or the like, and is not limited to the system form exemplified here.

  In this embodiment, the USB memory 200 supports the mass storage class, and the liquid crystal projector 100 supports the mass storage class and PictBridge via the USB I / F 106. When the USB memory 200 or a digital camera is connected to the liquid crystal projector 100, communication is started using a mass storage protocol. Thereby, the liquid crystal projector 100 can read the data recorded in the USB memory 200 or the digital camera.

  In this embodiment, the USB memory is applied as the external storage. However, the present invention does not limit the external storage to the USB memory. For example, the external storage can be realized by a device having an image data holding function such as a card reader. is there.

  Although the USB memory 200 is recognized as a mass storage class device, the present invention does not limit the method of recognizing external storage.

  Further, the present invention is not limited to the above protocol, and for example, the liquid crystal projector 100 may support the PTP protocol.

  Further, the present invention is not limited to the liquid crystal projector 100, and can be realized by, for example, a display device such as a PC or a television.

  The USB memory 200 records an image file (hereinafter referred to as a photo image file) taken by a digital camera or the like, and an image file (hereinafter referred to as a document image file) obtained by converting a text file created by a document creation application page by page. Has been. The text file created by the document creation application referred to in this embodiment includes, for example, a file created by word processing software, spreadsheet software, presentation creation software, or the like.

  Here, a data group constituting a photographic image file is defined as photographic image data, and a data group constituting a document image file is defined as document image data. In the present embodiment, it is assumed that the photograph image file and other document image files have the same extension (for example, .jpg extension).

  A user uses a dedicated application on a personal terminal such as a PC to convert a text file into a document image file. For example, the case of Microsoft Office PowerPoint (registered trademark) manufactured by Microsoft Corporation will be described. In this case, it is possible to convert a text file for presentation consisting of a plurality of slides into an image file for each slide (for example, JPEG file exchange format). That is, it is possible to convert one presentation file composed of 10 slides into 10 JPEG files.

  The characteristics of the document image file created as described above are that it is often played back in the planned playback order, that is, the slide or page order of the original text file, and the final page is often reached. is there. On the other hand, in the continuous reproduction of photographic image files, it is conceivable to produce a slide show that does not bore the user by reproducing a series of image data in a random order.

  In this embodiment, the user can remotely operate the UI screen projected on the screen 119 by the liquid crystal projector 100 using the remote controller 400. In the present invention, the present invention is not limited to the operation by the remote controller 400, but can be realized by the user operating the operation unit 103 of the liquid crystal projector 100.

  FIG. 2 is a block diagram showing the configuration of the liquid crystal projector according to the embodiment of the present invention.

  In FIG. 2, reference numeral 109 denotes a system control circuit that controls the entire liquid crystal projector 100, and controls each unit based on an input signal and a program from each unit. A memory 101 temporarily stores constants, variables, images, and the like for operation of the system control circuit 109. Reference numeral 102 denotes an electrically erasable / recordable nonvolatile memory in which a firmware program of the system control circuit 109 is recorded. Reference numeral 103 denotes an operation unit for inputting various operation instructions of the system control circuit 109. The operation unit 103 includes a single or a combination of a switch, a dial, a touch panel, pointing based on line-of-sight detection, a voice recognition device, and the like.

  Reference numeral 120 denotes a remote control light receiving unit for inputting various operation instructions of the system control circuit 109, and can receive a key event (operation signal) from the remote control 400 attached to the liquid crystal projector 100.

  A power control unit 104 includes a DC-DC converter, a switch circuit that switches a block to be energized, and the like. The power supply control unit 104 detects the AC adapter, controls the DC-DC converter based on the detection result and an instruction from the system control circuit 109, and supplies a necessary voltage to each unit including the fan for a necessary period. Reference numeral 105 denotes a power supply unit composed of an AC adapter or the like.

  Reference numeral 107 denotes an Ethernet (registered trademark) I / F (interface) for network connection with an external device. It is possible to notify the system that centrally manages the liquid crystal projector 100 of a failure or the like of the liquid crystal projector 100. Reference numeral 106 denotes a USB I / F for USB connection with a digital camera, a USB memory, or the like. An image processing unit 108 performs processing for setting a display position of a JPEG image read from a digital camera, a USB memory, or the like, and processing for overlaying information such as a file name / date / Exif. Also, the processed image data is digitally converted into RGB signals composed of three kinds of color signals of red (R) / green (G) / blue (B).

  A projector video signal processing circuit 111 performs signal processing for converting digitized RGB signals into display signals suitable for the liquid crystal projector 100. Examples of the signal processing include interlace progressive conversion processing, frame rate conversion processing, resolution conversion processing, and the like. Reference numeral 110 denotes a frame memory, which is used for signal processing when the projector video signal processing circuit 111 converts the display signal into a display signal suitable for the projector, and can hold RGB signals of one frame or more. A signal level adjustment circuit 112 adjusts the output from the projector video signal processing circuit 111 to a signal level suitable for the projection image projected by the liquid crystal projector. A liquid crystal driver 113 drives the liquid crystal panel 117 based on the output signal of the signal level adjustment circuit 112.

  Reference numeral 116 denotes a lamp, which is a light source for projecting a projected image on the screen 119. A power supply unit 114 supplies power to the lamp 116, and a lamp driving circuit (ballast) 115 generates a stable high voltage to be supplied to the lamp 116 from the power supplied from the power supply 114. The R / G / B color filters are bonded to the liquid crystal panel 117, and the light projected by the lamp 116 is transmitted and blocked according to the RGB filters. The projection lens 118 forms the RGB color images that have passed through the liquid crystal panel 117 on the screen 119 and changes the size of the projection image. The screen 119 provides a projection surface on which a projection image is formed.

  FIG. 3 is a functional block diagram of firmware installed in the liquid crystal projector.

  In FIG. 3, reference numeral 300 denotes firmware installed in the liquid crystal projector 100, and includes the functional blocks 301 to 307 illustrated. A UI control task 301 generates and controls a UI screen. Reference numeral 302 denotes a file system. A USB driver 303 controls the USB mass storage class device. A remote control light receiving driver 304 processes a signal received by the remote control light receiving unit 120. A key event conversion driver 305 converts a signal received by the remote control light receiving driver 304 into key event information. Reference numeral 306 denotes a video signal processing driver that sends a video signal to the projector video signal processing circuit 111 and controls the video projected by the liquid crystal projector 100. Reference numeral 307 denotes a JPEG decoder. The UI control task 301 instructs the JPEG decoder 307 to decode the JPEG compressed data, and the JPEG decoder 307 returns the decoded data to the UI control task 301.

  FIG. 4 is an external view of a remote control of the liquid crystal projector.

  The remote control 400 includes a remote control light emitting unit 402, a POWER button 401, up / down / left / right direction buttons 405 to 408, an OK button 411, a focus button 403, a zoom button 404, a keystone button 409, and a menu button 410.

  The remote controller light emitting unit 402 sends a key event of the remote controller 400 to the liquid crystal projector. A POWER button 401 turns on / off the power. A focus button 403, a zoom button 404, and a keystone button 409 are buttons for adjusting focus, zoom, and keystone, respectively. For example, when adjusting the focus, the focus button 403 is pressed, and the direction buttons 405 and 408 are operated to perform the adjustment. Other settings and information can be displayed by pressing the menu button 410 and operating the direction buttons 405 to 408 and the OK button 411. Direction buttons 405 to 408 are used to specify the vertical and horizontal directions on a menu screen or the like. An OK button 411 determines a predetermined item selected on the menu screen or the like. When the remote controller 400 is operated, a key event corresponding to the operated button is sent to the liquid crystal projector 100.

  FIG. 5 is a flowchart showing the operation of the liquid crystal projector when a USB memory is attached to the liquid crystal projector.

  In FIG. 5, when the connection of the USB device is detected (S501), the liquid crystal projector 100 outputs a reset signal to the USB port (S502), and executes configuration (S503). At the time of configuration, the inserted USB memory 200 is inquired and determined whether the mass storage class is supported (S504). Specifically, the liquid crystal projector 100 can determine whether the USB memory 200 supports the mass storage class by acquiring the interface descriptor of the USB memory 200.

  When the USB memory 200 does not support the mass storage class (S504 / No), it is necessary to perform processing corresponding to the supported class (S506). Further, when the liquid crystal projector 100 does not support the acquired class, an error display can be projected on the screen 119.

  If the USB memory 200 supports the mass storage class (S504 / No), the liquid crystal projector 100 starts a block device mounting process (S505).

  FIG. 6 is a flowchart showing a UI screen generation process by the UI control task 301 in FIG.

  In FIG. 6, the UI control task 301 opens the directory of the USB memory 200 (S601), acquires the directory entry of the directory, and acquires all the file names and lower directory names included in this directory (S602).

  Next, in S603, the acquired file names and directory names are sorted in the order in which they are to be displayed in a list (S603). In the present embodiment, the sorting order is the dictionary order, but the present invention is not limited to this order or algorithm.

  Next, video data of a UI screen that displays a list of file names and directory names is configured in the memory 110 (S604), and the video signal processing driver 306 is instructed to output video of the UI screen configured in the memory 110 ( S605).

  FIG. 7A shows the directory structure of image files recorded in the USB memory 200. Here, a file having a file name starting with SLD_ indicates a document image file. A file having a file name starting with IMG_ indicates a photo image file.

  In this embodiment, it is assumed that directories F0000, F1000, and F2000 exist under the ROOT folder. In the directory F0000, SLD_0001. JPG to SLD_000N. There are N JPG document image files. N is not limited to a single digit natural number. Similarly, the directory F1000 includes IMG — 1001. JPG to IMG_100N. There are N JPG photo image files. The directory F2000 contains SLD_2001. JPG to SLD_200N. A JPG document image file and a directory F2100 exist. The directory F2100 includes IMG_2101. JPG to IMG — 210N. It is assumed that a JPG photo image file exists.

  FIG. 7B is a diagram illustrating a method for generating document image data.

  In FIG. 7B, reference numeral 710 denotes text file configuration data created by the document creation application, and 711 to 713 denote the first, second, and Nth slide pages included in the document file. A data conversion tool 717 generates document image data from document file configuration data. When the document file is composed of a plurality of pages, each page is individually generated as one page of JPEG image data. In FIG. 7B, the slide pages 711 to 713 are converted into document image data 714 to 716, respectively.

  FIG. 7C shows the format of the document image data.

  In FIG. 7C, reference numeral 720 denotes a document image data marker provided by the data conversion tool 717 to indicate that the data format before conversion is a document file. Reference numeral 721 denotes document image data, 722 denotes a header area of the document image data, and 723 denotes a document image data body.

  As shown in the figure, document image data marker 720 is added to header area 722 of document image data 721. For example, in Microsoft Office PowerPoint (registered trademark) and Word (registered trademark) manufactured by Microsoft Corporation, a character string of Software: Microsoft Office is described in the header area 722.

  In the present embodiment, the liquid crystal projector 100 can detect a document creation application name by holding a character string of an application name in advance and collating it with a character string included in a COM marker.

  Note that a character string or number other than the name may be used as long as the document image data can be uniquely identified. Further, the present invention does not limit the type of marker.

  FIG. 8 shows an example of the UI screen displayed in S606 of FIG.

  In FIG. 8, 800 is a list screen displayed by the processing in S606 of FIG. 6 after the USB memory 200 is connected, and a list of directory names and file names recorded in the USB memory 200 can be selected. Is displayed.

  A list display field 801 displays a list of directory names and file names. In the list display column 801, directory names F0000, F1000, and F2000 in the root directory of FIG. 5 are displayed in a list, and the directory F0000 is displayed in a selected state by a cursor 802.

  Reference numeral 803 denotes a thumbnail display field for displaying a thumbnail of the file selected in the list display field 801. Reference numeral 804 denotes an attribute display field for displaying attribute information of the file name selected in the same manner. In the attribute display field 804, the file name, file size, shooting date and time, resolution, and the like are displayed. However, the type of information to be displayed is not particularly limited, and is stored in, for example, Exif information of photographic image data. The shooting parameter information may be used.

  9A to 9D show transitions of the UI screen 800 of FIG.

  In the UI screen 800 of FIG. 8, it is assumed that the cursor 802 is in the directory F0000 and the file name is highlighted and displayed. In this state, when the user presses the OK button 411 of the remote controller 400, the list display field 801 is switched to a list display 901 of file names in the directory F0000 as shown in FIG. Here, 902 is an icon indicating the upper directory, and when this is selected, the list display is switched again to the list display in the upper directory. When the down button 408 of the remote controller 400 is pressed, the cursor 902 moves, and as shown in FIG. 9B, SLD_0001. JPG is selected 903. At this time, the UI control task 301 (FIG. 3) generates thumbnail size image data via the JPEG decoder 307 and displays the thumbnail 904 in the thumbnail display field 803. Also, attribute information of the creation date and time of the file is acquired via the file system 302 (FIG. 3), and is displayed in the attribute display field 804 as file information 905 together with the file name.

  Each time the selection state of the cursor 802 is sequentially moved by pressing the down button 408 of the remote controller 400, the display contents of the thumbnail display column 803 and the attribute display column 804 are updated as shown in FIG. 9C.

  When the user presses the OK button 411 of the remote controller 400 while the file name of the image data is selected by the cursor 802, the image data corresponding to the file name is displayed on the full screen as shown in FIG. Is done. When the OK button 411 is pressed again in the full screen display state, the UI screen 800 is restored from the full screen display.

  Next, an operation for randomly reproducing a plurality of pieces of image data or performing a slide show will be described with reference to an example in which a reproduction mode is selected from a state in which image data is displayed on a full screen.

  Here, the slide show reproduction refers to a reproduction method for reproducing image data in order of file names arranged in the list display field 801. Random playback refers to a playback method in which files arranged in the list display field 801 are played back in random order.

  FIGS. 10A and 10B illustrate playback mode selection dialogs 1011 and 1012. FIG. 11 is a flowchart showing processing in the UI control task 301 until the playback mode selection dialog is displayed.

  In FIG. 11, when the user presses the right button 407 of the remote control 400 while the image data is displayed on the full screen (S1101), the UI control task 301 displays the header information of the file of the image data currently displayed. Analysis is performed (S1102).

  Next, it is determined whether the document image data marker 720 (FIG. 7C) is included as header information (S1103). If not included, a playback mode selection dialog 1011 is displayed in which only “slide show playback” can be selected as the playback mode (S1104). On the other hand, if the document image data marker 720 is included, a playback mode selection dialog 1012 in which either “slide show playback” or “random playback” can be selected as a playback mode is displayed (S1105).

  In the playback mode selection dialog 1012, the highlight indicating the item selection is moved up and down by the up and down buttons 405 and 408 of the remote control 400 as shown in FIG.

  Next, a procedure from full-screen display of photographic image data to selection of a playback mode by the playback mode selection dialog 1012 and playback of the photographic image data will be described.

  As shown in FIG. 12A, the list display column 801 displays a list of file names in the directory F1000, and the cursor 1001 is a photographic image file IMG — 1001. Assume that JPG is displayed in a selected state. Here, when the user presses the OK button 411 of the remote controller 400, the selected image file is displayed in full screen as shown in FIG.

  When the user presses the right direction button 407 of the remote controller 400 in this full screen display state, the image file IMG — 1001. JPG header information is analyzed. Here, IMG — 1001. Since JPG is photographic image data, the header image does not include the document image data marker 720. Accordingly, as shown in FIG. 12C, a playback mode selection dialog 1012 is displayed on the image data displayed on the full screen.

  FIG. 13 is a flowchart showing the processing when “slide show playback” is selected in the playback mode selection dialog 1012 of FIG.

  In FIG. 13, the liquid crystal projector 100 first searches for the next file name of the image data currently displayed on the full screen in the order of the file names arranged in the list display field 801 (S1301). If the next file name does not exist (S1302), the slide show reproduction ends (S1307). If the next file name exists, the file is opened (S1303), and the header area is analyzed (S1304). When the document image data marker 720 is detected from the header area (S1305), the file is document image data, not the photographic image data that is the current display target, and the process returns to S1301. On the other hand, if the document image data marker 720 is not detected, it is determined that the image data is photographic image data, and this file is displayed on the full screen (S1306). After displaying for a certain period of time, the process returns to S1301, and thereafter, the process is repeated until the processing is completed for all the files.

  FIG. 14 is a flowchart showing processing when “random playback” is selected in the playback mode selection dialog 1012 of FIG.

  In FIG. 14, the liquid crystal projector 100 first identifies one file name using a random number or the like from all file names arranged in the list display field 801 (S1401). If there is no file name that can be extracted next (S1402), the random reproduction is terminated (S1407). If there is a file name that can be extracted next, the file is opened (S14003), and the header area is analyzed (S1404). When the document image data marker 720 is detected from the header area (S1405), the file is document image data, not the photographic image data that is the current display target, and the process returns to S1401. On the other hand, when the document image data marker 720 is not detected, this file is displayed on the full screen (S1406). After displaying for a certain period of time, the process returns to S1401 again, and thereafter, the process is repeated until the processing is completed for all files, and all the photo image data under the directory are displayed in full screen in random order.

  Here, the algorithm for randomly searching the image data to be displayed is not particularly limited in the present invention.

  Next, a procedure from full-screen display of document image data to selection of a playback mode by the playback mode selection dialog 1012 and playback of the document image data will be described.

  As shown in FIG. 15A, the list display field 801 displays a list of file names in the directory F1000, and the cursor 1001 is moved to the document image file SLD_0001. Assume that JPG is displayed in a selected state. Here, when the user presses the OK button 411 of the remote controller 400, the selected image file is displayed on the full screen as shown in FIG.

  In this full screen display state, when the user presses the right button 407 of the remote control 400, the image file SLD_0001. JPG header information is analyzed. Here, SLD_0001. Since JPG is document image data, the header information does not include the document image data marker 720. Accordingly, as shown in FIG. 15C, a reproduction mode selection dialog 1011 is displayed on the image data displayed on the full screen. That is, only “slide show reproduction” can be selected for document image data.

The processing when “slide show playback” is selected in the playback mode selection dialog 1011 in FIG. 15 is the same as the processing in FIG.

According to the present embodiment, when document image data having a scheduled reproduction order and photographic image data not having a scheduled reproduction order are mixed in the same directory, in the case of document image data, a random reproduction target The playback order cannot be changed. Accordingly, only photographic image data can be subjected to random reproduction, the reproduction order can be changed, and waste of random reproduction of document image data can be eliminated.

[Second Embodiment]
In the first embodiment, the playback mode selection dialogs 1011 and 1012 are displayed in the full screen display state of image data. On the other hand, in the second embodiment, a playback mode selection dialog 1011 is selected after selecting one file name from the list display field 801 (FIG. 8) while the UI screen 800 (FIG. 8) is displayed. , 1012 are displayed and the procedure for reproducing the image data will be described.

  As shown in FIG. 16A, the list display field 801 displays a list of file names in the directory F1000, and the cursor 1001 is a photographic image file IMG — 1001. Assume that JPG is displayed in a selected state. Here, when the user presses the right button 407 of the remote controller 400, a playback mode selection dialog 1012 is displayed on the UI screen as shown in FIG. This process is the same as that of FIG. 11 of the first embodiment.

  In the first embodiment, the processing of FIG. 11 is applied to the image data displayed on the full screen, but in the second embodiment, the list display field 801 (FIG. 8) of the UI screen 800 (FIG. 8). The same process is applied to the file name selected in. In FIG. 16A, photographic image data IMG — 1001. Since JPG is selected, a playback mode selection dialog 1012 is displayed as shown in FIG. 16B, as in FIG. Thereafter, the playback procedure after selecting “slide show playback” or “random playback” is the same as that in FIGS. 13 and 14 of the first embodiment.

  Next, as shown in FIG. 16C, the list display field 801 displays a list of file names in the directory F0000, and the cursor 1001 is moved to the document image file SLD_0001. Assume that JPG is displayed in a selected state. Here, when the user presses the right button 407 of the remote controller 400, a playback mode selection dialog 1011 is displayed on the UI screen as shown in FIG. This process is the same as that of FIG. 11 of the first embodiment.

  Subsequently, the playback procedure after selecting “slide show playback” is the same as that in FIG. 13 of the first embodiment.

  In each of the first and second embodiments, when reproduction of all displayable image data is completed in both random reproduction and slide show reproduction, the screen returns to the UI screen 800 again. Further, the reproduction may be repeatedly performed until the OK button 411 of the remote controller 400 is pressed. In the present invention, the slide show playback and random playback end methods are not particularly limited.

Further, the directories F0000 and F1000 (FIG. 7A) in each of the first and second embodiments are illustrated as directories having only image data in the lower order.
On the other hand, the playback mode described above may be applied recursively to a directory having a directory other than a file as a lower directory and having a file below that directory, such as a directory F2000. Alternatively, a method may be adopted in which the method is applied only to files directly under the current directory and the lower directories are ignored.

  In addition, in each of these embodiments, the UI screen 800 is operated by a button operation from the remote controller 400, but the operation unit 103 (FIG. 2) of the liquid crystal projector 100 may be operated. The present invention does not specifically limit whether the remote controller 400 or the operation system of the apparatus main body is used as a key event input method.

[Third Embodiment]
In each of the first and second embodiments, as shown in FIG. 7A, an example in which photographic image data and document image data are stored in different directories has been described. On the other hand, photographic image data and document image data may be mixed in the same directory.

  As described with reference to FIGS. 11 and 13, whether the document image data or the photographic image data is determined confirms whether or not the document image data marker 720 exists in the header area 713 every time the image file is read. . For this reason, even if photographic image data and document image data are mixed as shown in FIG. 18, only document image data can be correctly identified.

  In the present embodiment, the configuration and functions other than the arrangement of the image files in the directory are the same as those in the first and second embodiments, and thus the description thereof is omitted.

  Note that the present invention can be applied not only to an image playback apparatus that can directly connect an external storage that stores image data, but also to an image playback apparatus that can access the external storage via a network, for example.

[Other Embodiments]
Although the present invention has been described by taking a projector as an example, the present invention can also be applied to other image reproduction apparatuses such as a television.

  The object of the present invention can also be achieved by supplying a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus. That is, it goes without saying that this can also be achieved by the computer (CPU or MPU) of the system or apparatus reading and executing the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, nonvolatile semiconductor memory card, ROM, or the like can be used. . Further, the functions of the above-described embodiments may be realized by executing the program code read by the computer.

  However, there is a case where an OS (operating system) or the like running on the computer performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Needless to say, it is included.

  Furthermore, the program code read from the storage medium may be written to a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instruction of the program code, and the function of the above-described embodiment is realized by the processing. Needless to say.

It is a figure which shows the structure of the image reproduction apparatus of embodiment which concerns on this invention. It is a block diagram which shows the structure of the liquid crystal projector of embodiment which concerns on this invention. It is a functional block diagram of firmware mounted on a liquid crystal projector. 1 is an external view of a remote controller according to an embodiment of the present invention. It is a flowchart which shows the operation | movement of a liquid crystal projector at the time of attaching USB memory to a liquid crystal projector. It is a flowchart which shows operation | movement of the liquid-crystal projector in embodiment which concerns on this invention. (A) is a figure which shows the directory structure of the image file recorded on the USB memory 200, (b) is a figure explaining the production | generation method of document image data, (c) is a figure which shows the format of document image data. . 4 is a diagram illustrating a UI screen of the liquid crystal projector 100. FIG. FIG. 9 is a diagram illustrating transition of a UI screen 800 in FIG. 8. It is a figure which illustrates reproduction mode selection dialog 1011 and 1012. It is a flowchart which shows the operation | movement of the liquid-crystal projector in embodiment which concerns on this invention. It is a figure which shows the transition of UI screens until the reproduction mode selection dialog is displayed about photographic image data. It is a flowchart which shows operation | movement of the liquid-crystal projector in embodiment which concerns on this invention. It is a flowchart which shows the operation | movement of the liquid-crystal projector in embodiment which concerns on this invention. It is a figure which shows the transition of UI screen until a reproduction mode selection dialog is displayed about document image data. It is a figure which shows the transition of UI screen until the reproduction mode selection dialog is displayed on the UI screen on which the file names of the image data are listed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 LCD projector 101 Memory 102 Non-volatile memory 103 Operation part 104 Power supply control part 105 Power supply part 106 USB I / F
108 Image processing circuit 109 System control circuit 110 Frame memory 111 Projector video signal processing circuit 112 Signal level adjustment circuit 113 Liquid crystal driver 115 Lamp drive circuit (ballast)
116 Lamp 117 Liquid crystal panel 118 Projection lens 119 Screen 120 Remote control light receiving unit 200 USB memory 400 Remote control

Claims (13)

An image reproduction device for reproducing an image file recorded on a storage medium,
Obtaining means for obtaining an image file from the storage medium;
Playback means for sequentially playing back the image files acquired by the acquisition means;
Determining means for determining whether the image file acquired by the acquiring means and reproduced by the reproducing means is an image file generated based on a document file ;
Presenting a selection screen for allowing a user to select a selection item for executing a slide show that allows the change of the playback order of image files or a selection item for executing a slide show that cannot change the playback order. comprising a control unit, a for controlling the reproducing device to,
The control means, when the determination means determines that the image file is generated based on the document file, the selection item for executing the slide show that enables the change of the reproduction order cannot be selected. An image reproducing apparatus for controlling the reproducing means to present a screen . Before Kiga image file, an image reproducing apparatus according to claim 1, wherein the Oh Rukoto in the generated image file by converting the document file comprising a plurality of pages as an image file page by page. The determination means, the acquired attribute information from the image file, using the acquired attribute information, according to claim 1 or, characterized in that determining whether an image file generated based on the document file 2. The image reproducing device according to 2. The image file includes an image file generated based on a document file and a photo image file,
4. The image according to claim 1, wherein an image file generated based on the document file and the photo image file are mixedly recorded on the storage medium. 5. Playback device.   5. The display device according to claim 1, further comprising a display unit that displays a list of file names of the image files acquired by the acquisition unit and displays a predetermined file in a selectable manner from the file names displayed in the list. The image reproducing device according to any one of the preceding claims.   6. The slide show that allows the reproduction order to be changed is random reproduction in which the image files acquired by the acquisition unit are reproduced in a random order. Image playback device.   The apparatus further comprises selection means capable of selecting a selection item for executing the slide show that enables the change of the reproduction order, or a selection item for executing the slide show that cannot change the reproduction order,
  7. The control unit according to claim 1, wherein the control unit controls the reproduction unit to sequentially reproduce the image file acquired by the acquisition unit according to the selection item selected by the selection unit. 2. The image reproducing device according to claim 1.   The image reproducing apparatus according to claim 1, wherein the document file is a document file for presentation.   9. The image reproducing apparatus according to claim 1, wherein the image file is a JPEG file.   8. The image reproducing apparatus according to claim 1, wherein the document file is an image file obtained by converting a presentation document file into a JPEG file for each slide. A control method for an image playback apparatus having playback means for playing back an image file recorded on a storage medium,
An acquisition step of acquiring an image file from the storage medium;
A determination step of determining whether the image file acquired by the acquisition step and reproduced by the reproduction means is an image file generated based on a document file ;
Presenting a selection screen for allowing a user to select a selection item for executing a slide show that allows the change of the playback order of image files or a selection item for executing a slide show that cannot change the playback order. And a control step for controlling the reproducing means,
In the control step, when it is determined that the image file is generated based on the document file in the determination step, the selection item for executing the slide show that enables the change of the reproduction order cannot be selected. A control method characterized by controlling the reproduction means to present a screen . The program for making the computer of an image reproduction apparatus perform the control method of Claim 11 .   A computer-readable storage medium storing the program according to claim 12.