JP2005080219A - Image reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem such that it is impossible for a plurality of persons to simultaneously watch different preferable images since one image is reproduced at once in an image reproducing apparatus such as a video camera. <P>SOLUTION: A plurality of image files are simultaneously read out of a recording medium 201 to which random access can be performed, in a time division manner and display processing is also performed in the time division manner, so that a plurality of images can be outputted to one display device (LCD 402 or an AV output terminal 404) together and can be outputted to both the multiple display devices (LCD 402 and the AV output terminal 404) together. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention reads a plurality of image files from a recording medium that can simultaneously access a plurality of files stored in them, such as a hard disk, an optical disk, a memory card, etc., by time-division access. The present invention relates to an image reproducing apparatus that can display a plurality of image files on a single display device, or display and reproduce them on a plurality of display devices.

  An example of a conventional apparatus that reads and reproduces an image file from a recording medium such as a hard disk, an optical disk, or a memory card will be described by taking a video camera as an example. FIG. 17 is a schematic diagram showing an example of the overall system configuration when a video camera is used as an image playback device.

  In this system, a TV set 404 having, for example, a screen 4040 as an external monitor (external display device) is connected to a video camera 401 as an image playback device by an AV output cable 403. In addition, the video camera 401 includes a liquid crystal display (LCD) 402 having a screen 4020. The video camera 401 can be controlled by both a main body key 405 provided on the video camera 401 itself and a remote control device (hereinafter referred to as a remote controller) 406.

  18 is a block diagram showing a hardware configuration of the conventional video camera 401 shown in FIG. 17, and FIG. 19 is a block diagram showing a configuration example of the control unit thereof. In FIG. 18 and FIG. 19, a solid line indicates a data transmission / reception path, and a broken line indicates a transmission path of a control signal from a control unit described later.

  As shown in FIG. 18, the video camera 401 captures an optical image of a subject, converts it into an analog electrical signal, and outputs an analog electrical signal output from the CCD 201 to an AGC (Automatic Gain). CDS (Corelated Double Sampling) / AD converter 202 including a control) and the like, and a signal processor 203 that generates a YUV signal, an edge enhancement signal, and the like from the output signal of the CDS / AD converter 202, An SDRAM interface (IF) 206 that controls input / output of signals processed by the signal processing unit 203 is provided.

  The video camera 401 also includes a second SDRAM 204 for buffering when compressing / decompressing image data, and a first SDRAM 205 for buffering the YUV image data output from the signal processing unit 203 described above via the SDRAM IF 206. And an image compression / decompression unit 207 that performs image data compression / decompression processing (for example, an MPEG codec) and a recording interface (IF) 208 that controls writing and reading of data to / from a recording medium 209 described later. .

  The recording medium 209 is a so-called random accessible medium, and corresponds to a medium such as an HDD, various disk media, and a memory card. When this recording medium 209 is fixedly provided in the video camera 401 (for example, an internal HDD), a removable type HDD, for example, various types of disk media (magnetic disk, optical disk, magneto-optical disk, etc.) ), Various types of rewritable non-volatile solid-state memory (for example, a memory card, etc.) or the like can be used as necessary, and both can be used together.

  Further, the video camera 401 has a display IF 210 for displaying the image data output from the SDRAM IF 206 at the time of shooting and playback on both the built-in LCD 402 and the TV set 404 as an external monitor connected to the AV output terminal 216. I have. The video camera 401 also includes a third SDRAM 217 for buffering compressed data, a DMA controller 211 for controlling transmission / reception of data between the third SDRAM 217 and the above-described image compression / decompression unit 207 and recording IF 208, and the entire system. And a control unit 212 for controlling the control. The DMA controller 211 and the control unit 212 are included in the microcomputer 213.

  Further, the above-described second SDRAM 204 is connected to the image compression / decompression unit 207, and the above-described recording medium 209 is connected to the recording IF 208. The DMA controller 211 is connected to a third SDRAM 217 and a program ROM 218 for buffering compressed data. Further, the video camera 401 is provided with a user interface (IF) 214 for receiving input signals from the main body key 405 and the remote controller 406 and giving them to the control unit 212. For example, an infrared system can be used as the remote controller 406, but components such as a light receiving unit and a photoelectric conversion unit for that purpose are well known and are not shown.

  The jack of the AV output terminal 216 incorporates a contact-type sensor (not shown) that is turned on when a plug provided at the end of the AV output cable 403 is inserted. When this sensor detects the insertion of a plug, a signal indicating that is given to the display IF 210.

  The control unit 212 shown in FIG. 18 is configured as shown in FIG. That is, the signal processing unit control unit 301 that controls the signal processing unit 203, the SDRAMIF control unit 302 that controls the SDRAM IF 206, the CDS / AD control unit 303 that controls the AGC and the like of the CDS / AD 202, and the DMA controller 211 are controlled. DMA controller control unit 304, CPU 305 for controlling the entire control unit according to a program stored in program ROM 218, image compression / decompression unit control unit 306 for controlling image compression / decompression unit 207, and display IF control for controlling display IF 210 The control unit 212 includes a unit 307, a recording IF control unit 308 that controls the recording IF 208, a user IF control unit 309 that controls the user IF 214, and the like. Each component of the control unit 212 is connected to each other by a bus with the CPU 305 as a center.

  Next, the operation of the video camera 401 as a conventional image reproducing apparatus configured as shown in FIGS. 18 and 19 will be described. It is assumed that the shooting mode is set by operating the body key 405 by the user during shooting, and the playback mode is set by operating the body key 405 by the user during playback.

  When the shooting mode is set, the user operates the main body key 405 (or the remote controller 406) to give a shooting command to the control unit 212 via the user IF 214. Under the control of the control unit 212 according to this, first, the CCD 201 receives reflected light from a subject (not shown), performs photoelectric conversion, and outputs the resulting analog video signal. The analog video signal is subjected to processing such as sampling, AD conversion, and AGC by the CDS / AD 202 to be converted into a digital video signal and input to the signal processing unit 203.

  The digital video signal input to the signal processing unit 203 is subjected to processing such as gamma correction, filtering, and edge enhancement processing, and is subjected to YUV signals, specifically Y (luminance), U (red color difference), and V (blue color difference). Each signal (color difference) is generated. This YUV signal is temporarily buffered in the first SDRAM 205 via the SDRAM IF 206. At this time, the operations of the CDS / AD 202, the signal processing unit 203, and the SDRAM IF 206 are controlled by the CDS / AD control unit 303, the signal processing unit control unit 301, and the SDRAM IF control unit 302 of the control unit 212, respectively.

  Next, the video signal once buffered in the first SDRAM 205 as described above is sent again to the image compression / decompression unit 207 via the SDRAM IF 206 and subjected to compression processing. The compression / decompression processing by the image compression / decompression unit 207 is generally based on the MPEG system, but may be based on other systems. Furthermore, the image compression / expansion unit 207 may not be provided, and the compression processing may not be performed. Even if the image compression / expansion unit 207 is provided, the image compression / expansion unit 207 may be provided when the image size is small. The compression process may not be performed without using it.

  During the compression processing by the image compression / decompression unit 207, the second SDRAM 204 is used as a buffer for buffering motion prediction images and the like during the compression processing. The data compressed by the image compression / decompression unit 207 is sent to and written into the third SDRAM 217 via the DMA controller 211 in the microcomputer 213, and further, header addition processing and the like are performed in the third SDRAM 217 to be filed. . The image data filed and compressed in this way is sent to the recording medium 209 via the DMA controller 211 and the recording IF 208, and is recorded on the recording medium 209. The processing at this time is controlled by the image compression / decompression unit control unit 306, the DMA controller control unit 304, and the recording IF control unit 308 of the control unit 212.

  At the same time, the YUV image data previously buffered in the first SDRAM 205 is sent to the LCD 402 via the display IF 210 and displayed. Further, when the TV set 404 is connected to the AV output terminal 216 via the AV output cable 403, the display IF 210 detects this, so the YUV image data buffered in the first SDRAM 205 is displayed in the display IF 210, AV. It is sent to the TV set 404 via the output terminal 216 and displayed on the screen 4040. The processing at this time is controlled by the SDRAMIF control unit 302 and the display IF control unit 307 of the control unit 212.

  Next, an operation at the time of reproduction, which is an original operation of the video camera 401 as an image reproducing apparatus, will be described. It is assumed that the playback mode is set by the user operating the main body key 405 during playback.

  The user selects an image to be reproduced with reference to a reproduction image selection screen (hereinafter referred to as a reproduction image selection screen) displayed on the screen 4020 of the LCD 402 or the screen 4040 of the TV set 404 connected to the AV output terminal 216. . At this time, the top or middle frame of the moving image is displayed on the playback image selection screen as information for selecting the next image to be displayed, arranged as a thumbnail as shown in the schematic diagram of FIG. Specifically, as shown in FIG. 20, on the screen 4020 of the LCD 402 and the screen 4040 of the TV set 404, a thumbnail that is one frame at the head or middle of each file of moving image data recorded on the recording medium 209. The same playback image selection screen in which TN1 to TN6 are arranged is displayed. Therefore, when the user operates the main body key 405 of the video camera 401 or the remote controller 406 to select an image that the user wants to reproduce, for example, a thumbnail of TN2 (a frame is highlighted in comparison with other thumbnails). The moving image specified by the thumbnail TN2 can be reproduced as follows.

  That the user has selected the thumbnail TN2 on the playback image selection screen of the LCD 402 or the TV set 404 is notified to the control unit 112 via the user IF 214. Thereby, the compressed data of the moving image specified by the thumbnail TN2 selected by the user is read from the recording medium 209, sent to the third SDRAM 217 via the recording IF 208 and the DMA controller 211, temporarily buffered, header information, etc. Is then sent to the image compression / decompression unit 207 via the DMA controller 211. These processes are controlled by the recording IF control unit 308, the DMA controller control unit 304, and the image compression / decompression unit control unit 306 of the control unit 212.

  The image compression / decompression unit 207 performs decompression processing of the compressed data sent from the DMA controller 211 using the second SDRAM 204 as a buffer. At this time, as shown in the schematic diagram of FIG. 21, only one area indicated by reference numeral 204B0 necessary for reproducing one image is allocated to the buffer area 204B of the second SDRAM 204.

The image data expanded by the image compression / decompression unit 207 is temporarily buffered in the first SDRAM 205 via the SDRAM IF 206. The image data buffered in the first SDRAM 205 is sent again to the display IF 210 via the SDRAM IF 206 and displayed on the screen 4020 of the LCD 402. When the TV set 404 is connected to the AV output terminal 216 via the AV output cable 403, the same image as that displayed on the screen 4020 of the LCD 402 is also displayed on the screen 4040 of the TV set 404. The These processes are controlled by the image compression / decompression unit control unit 306, SDRAMIF control unit 302, and display IF control unit 307 of the control unit 212.
JP 05-252440 A

  In the video camera as the conventional image reproducing apparatus as described above, at the time of reproduction, usually only one moving image can be reproduced at a certain time. However, there are many cases where a plurality of people are photographed sequentially, such as golf swings and shooting at a ski resort, and there are many requests that a plurality of people want to watch different videos at the same time. However, such a request cannot be satisfied by the conventional image reproducing apparatus as described above. This means that not only a video camera as an example of the above-described image playback apparatus, but also a video deck using a so-called random accessible recording medium (hard disk, disk medium, etc.), a memory card, and playback of moving image files. The same applies to an image reproducing apparatus such as a mobile phone capable of performing the above. Furthermore, not only when playing back moving images in these devices, but also when playing back still images, playback of still images such as digital still cameras and mobile phones that can play back still image files is also possible. Conventional devices have the same problem.

  On the other hand, Patent Document 1 describes an invention of a video camera capable of displaying two images. However, the video camera described in Patent Document 1 has a configuration in which a part of one image taken by itself is enlarged and displayed on two screens with the other part, and the purpose is to solve the above-described problems. It is not what I did.

  The present invention has been made in view of the conventional problems as described above. In various types of image reproduction devices, at the time of image reproduction, at least two different images are displayed on one display device. Or an image playback device that can be displayed on each of two display devices, and moreover, a plurality of images can be displayed on a single display device, or a plurality of images can be displayed on a plurality of display devices, respectively. An object of the present invention is to provide an image reproducing apparatus. By providing such an image playback device, two or more people can view different videos simultaneously with one image playback device.

  More specifically, the present invention relates to an image reproducing apparatus having its own display device, such as a video camera, a mobile phone having an image reproducing function, and the like. It is an object of the present invention to provide an image reproduction that can display both of the above images or display different images on both the display device and the external display device included in the video. By providing such an image playback device, two or more users can display different images on the same display device or on different display devices such as a video camera. It becomes possible to see at the same time on the display device.

  An image reproduction apparatus according to the present invention simultaneously records a recording medium capable of accessing a plurality of files simultaneously by time division access and a plurality of image data files recorded on the recording medium by time division access. And a display control unit for displaying image data of a plurality of files read by the data reading unit on a display device.

  In such an image reproducing apparatus of the present invention, a plurality of image data files are simultaneously read out by a time division access from a recording medium capable of simultaneously accessing a plurality of files by a time division access. The image data of the plurality of files is displayed on the display device.

  The image reproduction apparatus according to the present invention is the image reproduction apparatus according to the above invention, wherein, when the image data is a moving image, the data reading unit thins out the data in units of frames constituting the moving image and stores the image data in the recording medium. It is made to read from.

  In such an image reproducing apparatus of the present invention, in the above-described invention, when the image data is a moving image, the data is thinned out in units of frames constituting the moving image and read out from the recording medium.

  In the image reproduction apparatus according to the present invention as set forth in the invention described above, the display control means reduces the image size and displays the image on the display apparatus.

  In such an image reproducing device of the present invention, in the above-described invention, a plurality of images are displayed on the display device with the image size reduced.

  In the image reproduction apparatus according to the present invention as set forth in the invention described above, the display control means should display a plurality of image data arranged vertically and / or horizontally on the screen of the display apparatus. And

  In such an image reproducing apparatus of the present invention, in the above-described invention, a plurality of image data are displayed on the screen of the display device arranged vertically and / or horizontally.

  The image reproduction device according to the present invention further comprises an operation means for controlling image display and a remote control device for controlling image display in the above-described invention, wherein the display control means includes the operation means. According to the operation and the operation of the remote control device, display control of different image data displayed on the display device is performed.

  In such an image reproducing apparatus of the present invention, in the above-described invention, display of different image data displayed on the display device is controlled in accordance with the operation of the operating means and the operation of the remote control device.

  In the image reproducing apparatus according to the present invention, the display control means may display the image data of a plurality of files read from the recording medium by the data reading means on a plurality of display devices, respectively. It is characterized by being.

  In such an image reproducing apparatus of the present invention, in the above-described invention, the image data of a plurality of files read from the recording medium are respectively displayed on the plurality of display apparatuses.

  The image reproduction device according to the present invention further comprises an operation means for controlling image display and a remote control device for controlling image display in the above-described invention, wherein the display control means includes the operation means. According to the operation and the operation of the remote control device, display control of image data displayed on different display devices is performed.

  In such an image reproducing apparatus of the present invention, in the above-described invention, display control is performed on image data displayed on different display devices in accordance with the operation of the operation means and the operation of the remote control device.

  Furthermore, the image reproducing apparatus according to the present invention can record a recording medium that can simultaneously access two files by time-division access, and two image data files recorded on the recording medium by time-division access. Data reading means for reading simultaneously, a display device, and display control means for causing the display device to display both image data of two files read by the data reading means.

  In such an image reproducing apparatus of the present invention, two image data files are simultaneously read out by a time division access from a recording medium capable of accessing two files simultaneously by a time division access. It is displayed on the display device.

  The image reproduction apparatus according to the present invention is the image reproduction apparatus according to the above invention, wherein, when the image data is a moving image, the data reading unit thins out the data in units of frames constituting the moving image and stores the image data in the recording medium. It is made to read from.

  In such an image reproducing apparatus of the present invention, in the above-described invention, when the image data is a moving image, the data is thinned out in units of frames constituting the moving image and read out from the recording medium.

  In the image reproduction apparatus according to the present invention as set forth in the invention described above, the display control means reduces the image size and displays the image on the display apparatus.

  In such an image reproducing device of the present invention, in the above-described invention, a plurality of images are displayed on the display device with the image size reduced.

  The image reproduction apparatus according to the present invention is characterized in that, in the above-mentioned invention, the display control means is arranged to display two image data arranged vertically or horizontally on the screen of the display apparatus. .

  In such an image reproducing device of the present invention, in the above-described invention, a plurality of image data are displayed on the screen of the display device arranged vertically and / or horizontally.

  The image reproduction device according to the present invention further comprises an operation means for controlling image display and a remote control device for controlling image display in the above-described invention, wherein the display control means includes the operation means. According to the operation and the operation of the remote control device, display control of different image data displayed on the display device is performed.

  In such an image reproducing apparatus of the present invention, in the above-described invention, display of different image data displayed on the display device is controlled in accordance with the operation of the operating means and the operation of the remote control device.

  The image reproduction apparatus according to the present invention further comprises output means for sending image data and displaying the image on the external display apparatus when the external display apparatus is connected in the above-described invention, wherein the display control means is One image data is displayed on the display device, and the other image data is output from the output means.

  In such an image reproducing apparatus of the present invention, in the above-described invention, one image data is displayed on the display device, and the other image data is output from the output means.

  The image reproduction device according to the present invention further comprises an operation means for controlling image display and a remote control device for controlling image display in the above-described invention, wherein the display control means includes the operation means. A first state in which display control of image data on the display device is performed according to an operation, and display control of image data output from the output means is performed in accordance with an operation of the remote control device; One of the second states in which display control of the image data output from the output means is performed according to the operation, and display control of the image data on the display device is controlled according to the operation of the remote control device It is characterized by having taken.

  In such an image reproduction apparatus of the present invention, in the above-described invention, display control of image data on the display device is performed in accordance with the operation of the operation means, and an image output from the output means in accordance with the operation of the remote control device. One of a first state in which data display control is performed and a second state opposite to this is taken.

  The image reproduction apparatus according to the present invention is characterized in that, in the above-mentioned invention, the display control means comprises means for switching the state of the display control means from the first state to the second state or vice versa. To do.

  In such an image reproducing apparatus of the present invention, in the above-described invention, the first state and the second state are switched.

  The image reproduction apparatus according to the present invention is the image reproduction apparatus according to the above-described invention, wherein the display control means displays two image data on one of the display apparatus or the external display apparatus connected to the output means, When display of one of the two image data ends, information for selecting an image to be displayed next is displayed on the other of the display device or the output unit that is not displaying image data. When the other image data displayed on the one of the display device or the output means is displayed in full screen, and the image to be displayed next is selected from the information, the display device or the It is characterized in that two image data are displayed on one of the output means.

  In such an image reproducing apparatus of the present invention, when display of one of the two image data is completed in the above-described invention, the display apparatus that does not display the image data or the other of the output means is next connected to the other. Information for selecting an image to be displayed is displayed, and the other image data that has not yet been displayed displayed on one of the display device or the output means is displayed in full screen, and the next image to be displayed When an image is selected from the information for selecting the image, two image data are displayed on one of the display device and the output means.

  The image reproduction apparatus according to the present invention further comprises an operation means for controlling image display and a remote control device for controlling image display in the above invention, wherein the display control means is connected to the output means. When the external display device is not connected, display control of different image data displayed on the display device is performed according to the operation of the operation means and the remote control device, and the output When the external display device is connected to the means, two image data are displayed on one of the display device or the external display device connected to the output means, and the two of the two image data are displayed. When one display is finished, select the image to be displayed next on the other of the display device or the output means not displaying image data Information is displayed, the other image data displayed on one of the display device or the output means is displayed in full screen, and an image to be displayed next is selected from the information. Two image data are displayed on one of the display device and the output means.

  In such an image reproducing apparatus of the present invention, in the above-described invention, when an external display device is not connected to the output means, each displayed on the display device differs depending on the operation of the operating means and the remote control device. When image data is controlled to be displayed and an external display device is connected to the output means, two image data are displayed on one of the display device or the external display device connected to the output means, and the two image data are displayed. When the display of one of the images is finished, information for selecting the image to be displayed next is displayed on the other of the display devices or output means not displaying the image data, and the display device or output The other image data that has not yet been displayed displayed on one of the means is displayed in full screen, and the image is selected from the information for selecting the image to be displayed next. When selected, the two image data to one of the display device or output device is displayed.

  According to the image reproducing apparatus of the present invention as described above, a plurality of image data files can be simultaneously read by a time division access from a recording medium that can simultaneously access a plurality of files by a time division access. Since the image data of the plurality of files are displayed on the display device, a plurality of separate images can be simultaneously viewed by a plurality of people.

  According to the image reproducing apparatus of the present invention, in the above invention, when the image data is a moving image, the data is thinned out in units of frames constituting the moving image and read out from the recording medium. Smooth playback is performed even at low temperatures. In particular, when an image file is recorded on a recording medium that has been compressed by another MPEG method or the like, a considerable time may be required for the decompression process. Although not possible, it is possible to reproduce by thinning out the B and P pictures.

  In addition, according to the image reproducing apparatus of the present invention, in the above-described invention, a plurality of images are reduced in size and displayed on the display device, so that smooth reproduction is performed even when the image reproducing capability is low.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, a plurality of image data are displayed on the screen of the display device so as to be arranged vertically and / or horizontally. If the image reproduction capability is low, smooth reproduction is performed with a reduced size.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, since different image data displayed on the display device are respectively displayed and controlled in accordance with the operation of the operation means and the operation of the remote control device, various tricks are performed. Playback can be performed on individual images simultaneously.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, the image data of the plurality of files read from the recording medium are respectively displayed on the plurality of display apparatuses, so that a plurality of persons can display different images of their preference. Can be seen on the device.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, the image data displayed on the different display devices are respectively displayed and controlled in accordance with the operation of the operation means and the operation of the remote control device. However, various trick reproductions can be simultaneously performed on individual images on each display device while viewing a favorite image on different display devices.

  Further, according to the image reproducing apparatus of the present invention, two image data files are simultaneously read out by a time division access from a recording medium capable of simultaneously accessing two files by a time division access. Since it is displayed on the display device, a plurality of people can see two images at the same time. .

  According to the image reproducing apparatus of the present invention, in the above invention, when the image data is a moving image, the data is thinned out in units of frames constituting the moving image and read out from the recording medium. Even when it is low, two images can be smoothly reproduced. In particular, when an image file is recorded on a recording medium that has been compressed by another MPEG method or the like, a considerable time may be required for the decompression process. Although not possible, it is possible to reproduce by thinning out the B and P pictures.

  In addition, according to the image reproduction apparatus of the present invention, in the above-described invention, a plurality of images are reduced in size and displayed on the display device, so that even when the image reproduction capability is low, two images can be smoothly reproduced. Done.

  Further, according to the image reproducing device of the present invention, in the above-described invention, a plurality of image data are displayed on the screen of the display device so as to be arranged vertically and / or left and right. If the image reproduction capability is low while maintaining the size, two images can be smoothly reproduced with a reduced size.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, since different image data displayed on the display device are respectively displayed and controlled in accordance with the operation of the operation means and the operation of the remote control device, various tricks are performed. Playback can be performed simultaneously on each of the two images.

  Further, according to the image reproducing apparatus of the present invention, in the above-mentioned invention, one image data is displayed on the display device, and the other image data is output from the output means. Thus, a plurality of people can view the other image at the same time on a display device connected to the outside.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, display control of image data on the display device is performed according to the operation of the operation means, and the image output from the output means according to the operation of the remote control device. Since either the first state in which data display control is performed or the second state opposite to this is taken, one image is displayed on the display device provided in the apparatus, and the other image is Various tricks can be reproduced simultaneously on each of the images displayed on the two display devices while a plurality of people are simultaneously watching on the externally connected display devices.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, the first state and the second state can be switched, so that the operation means provided in the apparatus and the remote control device can be used properly as necessary. it can.

  According to the image reproducing apparatus of the present invention, in the above-described invention, when one of the two image data is displayed, the display apparatus that does not display the image data or the other one of the output means is connected to the other. Information for selecting an image to be displayed is displayed, and the other image data that has not yet been displayed displayed on one of the display device or the output means is displayed in full screen, and the next image to be displayed When the image is selected from the information for selecting the image, two image data are displayed on one of the display device and the output means. When the full-screen display can be seen as it is on the other display device, and the next image to be displayed on the other display device can be selected in the meantime, and the next image to be displayed is selected You can see the two images again.

  Further, according to the image reproducing apparatus of the present invention, in the above-described invention, when an external display device is not connected to the output means, each displayed on the display device differs depending on the operation of the operating means and the remote control device. When image data is controlled to be displayed and an external display device is connected to the output means, two image data are displayed on one of the display device or the external display device connected to the output means, and the two image data are displayed. When the display of one of the images is finished, information for selecting the image to be displayed next is displayed on the other of the display devices or output means not displaying the image data, and the display device or output The other image data that has not yet been displayed and is displayed on one of the means is displayed in full screen, and an image is selected from the information for selecting the image to be displayed next. When selected, two image data are displayed on one of the display device and the output means. Therefore, when an external display device is not connected to the output means, various trick reproductions are performed with the operation means and the remote control. According to the operation of the apparatus, each of the two images can be performed simultaneously, and when an external display device is connected to the output means, when the reproduction of the image is finished on one display device, the other The full-screen display can be viewed on the display device as it is, and the image to be displayed next can be selected on the other display device in the meantime, and when the image to be displayed next is selected, two images are displayed again. You can see the image.

  Hereinafter, embodiments of the image reproducing apparatus of the present invention will be described in detail. An example of the image reproducing apparatus of the present invention is a video camera, but is not limited to this. However, the entire system configuration including the video camera as the image reproducing apparatus of the present invention is the same as that of the conventional example shown in FIG.

  However, an external monitor (external display device) such as a TV set 404 is also connected to the video camera 401 as the image reproducing device of the present invention by an AV output cable 403. The video camera 401 has a liquid crystal display (LCD) 402 built therein. The video camera 401 can be controlled by both a main body key 405 provided on the video camera 401 itself and a remote control device (hereinafter referred to as a remote controller) 406.

  FIG. 2 is a block diagram showing a hardware configuration when the video camera 401 shown in FIG. 17 is a video camera as an image reproducing apparatus of the present invention, and FIG. 1 is a block diagram showing a configuration example of the control unit. . 1 and 2, a solid line indicates a data transmission / reception path, and a broken line indicates a transmission path of a control signal from a control unit described later. However, the hardware configuration of the video camera 401 as the image playback apparatus of the present invention shown in FIG. 2 is the same as the hardware configuration of the video camera 401 as the conventional image playback apparatus shown in FIG. And only the control procedure is different.

  As shown in FIG. 2, a video camera 401 captures an optical image of a subject, converts it into an analog electrical signal, and outputs an AGC (Automatic Gain) for converting the analog electrical signal output from the CCD 201 into a digital signal. CDS (Corelated Double Sampling) / AD converter 202 including a control) and the like, and a signal processor 203 that generates a YUV signal, an edge enhancement signal, and the like from the output signal of the CDS / AD converter 202, An SDRAM interface (IF) 206 that controls input / output of signals processed by the signal processing unit 203 is provided.

  The video camera 401 also includes a second SDRAM 204 for buffering when compressing / decompressing image data, and a first SDRAM 205 for buffering the YUV image data output from the signal processing unit 203 described above via the SDRAM IF 206. And an image compression / decompression unit 207 that performs image data compression / decompression processing (for example, an MPEG codec) and a recording interface (IF) 208 that controls writing and reading of data to / from a recording medium 209 described later. .

  The recording medium 209 is a so-called random accessible medium, and corresponds to a medium such as an HDD, various disk media, and a memory card. When this recording medium 209 is fixedly provided in the video camera 401 (for example, an internal HDD), a removable type HDD, for example, various types of disk media (magnetic disk, optical disk, magneto-optical disk, etc.) ), Various types of rewritable non-volatile solid-state memory (for example, a memory card, etc.) or the like can be used as necessary, and both can be used together.

  Further, the video camera 401 has a display IF 210 for displaying the image data output from the SDRAM IF 206 at the time of shooting and playback on both the built-in LCD 402 and the TV set 404 as an external monitor connected to the AV output terminal 216. I have. The video camera 401 also includes a third SDRAM 217 for buffering compressed data, a DMA controller 111 for controlling transmission / reception of data between the third SDRAM 217 and the above-described image compression / decompression unit 207 and recording IF 208, and the entire system. The control part 112 which controls this is provided. The DMA controller 111 and the control unit 112 are included in the microcomputer 113.

  Further, the above-described second SDRAM 204 is connected to the image compression / decompression unit 207, and the above-described recording medium 209 is connected to the recording IF 208. The DMA controller 111 is connected to a third SDRAM 217 and a program ROM 218 for buffering compressed data. Further, the video camera 401 is provided with a user interface (IF) 214 for receiving input signals from the main body key 405 and the remote controller 406 and giving them to the control unit 112. For example, an infrared system can be used as the remote controller 406, but components such as a light receiving unit and a photoelectric conversion unit for that purpose are well known and are not shown.

  The jack of the AV output terminal 216 incorporates a contact-type sensor (not shown) that is turned on when a plug provided at the end of the AV output cable 403 is inserted. When this sensor detects the insertion of a plug, a signal indicating that is given to the display IF 210.

  The control unit 112 shown in FIG. 2 is configured as shown in FIG. That is, the signal processing unit control unit 101 that controls the signal processing unit 203, the SDRAMIF control unit 102 that controls the SDRAM IF 206, the CDS / AD control unit 103 that controls the AGC of the CDS / AD 202, and the DMA controller 111 are controlled. DMA controller control unit 104, CPU 105 for controlling the entire control unit according to a program stored in program ROM 218, image compression / decompression unit control unit 106 for controlling image compression / decompression unit 207, and display IF control for controlling display IF 210 The control unit 112 includes the unit 107, the recording IF control unit 108 that controls the recording IF 208, the user IF control unit 109 that controls the user IF 214, and the like.

  Each of the recording IF control unit 108, the display IF control unit 107, the image compression / decompression unit control unit 106, and the SDRAM IF control unit 102 has a two-image reproduction switching unit 1082 for performing switching at the time of two-image reproduction, 1072, 1062, 1022 are provided. Each component of the control unit 112 is connected to each other by a bus with the CPU 105 as a center.

  Next, the operation of the video camera 401 as the image reproducing apparatus of the present invention configured as shown in FIGS. 1 and 2 will be described with reference to the flowchart showing the processing procedure of the CPU 105 of the control unit 112. It is assumed that the shooting mode is set by operating the body key 405 by the user during shooting, and the playback mode is set by operating the body key 405 by the user during playback. However, since the operation at the time of shooting processing when the shooting mode is set in the video camera 401 is the same as that of the conventional example described above, the description thereof is omitted. Also, regarding the operation during the reproduction process, the operation during the reproduction process of one image is the same as that of the above-described conventional example, and the description thereof is omitted. Therefore, in the following, the operation in the simultaneous reproduction processing of two images characterizing the video camera 401 as the image reproduction apparatus of the present invention will be described.

  At the time of two-image reproduction, when the user operates the main body key 405, a signal indicating that is given to the control unit 112 via the user IF 214. In response to this, the control unit 112 includes the two-image reproduction switching units 1082 and 1072 provided in the recording IF control unit 108, the display IF control unit 107, the image compression / decompression unit control unit 106, and the SDRAMIF control unit 102, respectively. , 1062 and 1022 are switched so as to enable the two-image reproduction, specifically, to execute the time-sharing process for reproducing the two-image file.

  In this case, the “normal two-image display mode” in which images are displayed on both the screen 4020 of the LCD 402 and the screen 4040 of the TV set 404 as an external monitor as described later, and when the LCD 402 cannot be used (for example, cover The external monitor 2 image display mode (1) for displaying two images using only the screen 4040 of the TV set 404 as an external monitor and the TV set 404 as an external monitor. When the TV set 404 cannot be used, that is, when the TV set 404 is not connected to the AV output terminal 216, the “LCD 2 image display mode (1)” in which two images are displayed using only the LCD 402, and both the LCD 402 and the TV set 404 are A mode in which only one of the two images is displayed at the user's selection even if it can be used. It operates in either mode of the monitor 2 the image display mode (2) "and" LCD2 image display mode (2) ".

  First, the main routine of the processing procedure of the CPU 105 shown in FIG. 3 will be described. If “two-image playback mode” is selected (YES in step S11), CPU 105 determines whether or not LCD 402 is in a usable state (step S12). If “two-image playback mode” is not selected (NO in step S11), other processing such as shooting mode and normal one-image playback mode is performed (step S13). When it is determined in step S12 that the LCD 402 cannot be used (NO in step S12), for example, when the cover of the LCD 402 is closed, the CPU 105 next uses the TV set 404 as an external monitor. It is determined whether or not it is possible (step S14). Whether or not the TV set 404 can be used can be determined based on whether or not a plug provided at the end of the AV output cable 403 is inserted into the AV output terminal 216.

  When the TV set 404 that is an external monitor cannot be used (NO in step S14), the CPU 105 returns the process to step S11. In this case, it is desirable that the CPU 105 generates an appropriate alarm by voice or the like.

  When it is determined in step S14 that the TV set 404 can be used (YES in step S14), the CPU 105 uses only the TV set 404 that is an external monitor to display two images, that is, “external monitor two images”. The processing is shifted to a subroutine “display mode (1)” (step S15).

  On the other hand, if the LCD 402 is usable in the previous step S12 (YES in step S12), the CPU 105 next determines whether or not the TV set 404 that is an external monitor is usable (step S16). Here, for example, when it is determined that the TV set 404 cannot be used because it is not connected to the AV output terminal 216 (NO in step S16), the CPU 105 displays only two images using only the LCD 402. The process proceeds to the subroutine of the mode to be performed, that is, the “LCD2 image display mode (1)” (step S17).

  Furthermore, when it is determined in step S16 that the TV set 404 that is an external monitor is usable (YES in step S16), the user displays two images only on the LCD 402 or only on the TV set 404 that is an external monitor. It is possible to select either a mode for performing or a mode for displaying a total of two images, one image each on both the LCD 402 and the TV set 404.

  Specifically, when the user selects to display two images only on LCD 402 by operating body key 405 (YES in step S18), CPU 105 moves the process to a subroutine of “LCD two image display mode (2)”. (Step S19). If the user selects to display two images only on TV set 404 by operating main unit key 405 (NO in step S18, YES in S20), CPU 105 is in “external monitor two-image display mode (2)”. Processing is transferred to a subroutine (step S21). Further, when the user selects to display one image each on the LCD 402 and the TV set 404 by operating the main body key 405 (NO in step S18, NO in S20), the CPU 105 displays “normal two-image display”. The process is shifted to the “mode” subroutine (step S22).

  The above is the main routine executed by the CPU 105. The processing procedure of each subroutine will be described below. First, the processing procedure of the “normal two-image display mode” subroutine will be described with reference to the flowchart of FIG.

  In the “normal two-image display mode” subroutine, the CPU 105 first initializes the flag F to “1” (step S100). The function of this flag F will be described later.

  Next, the CPU 105 can use both the LCD 402 and the TV set 404 as an external monitor. First, both the LCD 402 and the TV set 404 as an external monitor are respectively shown in FIGS. 5 (a) and 5 (b). A reproduction image selection screen (reproduction image selection screen) as shown in the schematic diagram is displayed (step S101).

  When the “normal two-image playback mode” is set in this way, the user IF control unit 109 controls the main body key 405 of the video camera 401 for the display operation of the LCD 402 and the remote control 406 of the TV set 404. It sets so that each may function exclusively for display operation (step S102).

  Selection of a reproduction image is performed using a reproduction image selection screen as shown in the schematic diagrams of FIGS. 5A and 5B. Specifically, the user can select a screen 4020 of the LCD 402 or an AV output terminal. An image to be reproduced is selected with reference to a reproduction image selection screen displayed on the screen 4040 of the TV set 404 connected to H.216. At this time, the playback image selection screen displayed on the screen 4020 of the LCD 402 shown in FIG. 5A and the playback displayed on the screen 4040 of the TV set 404 connected to the AV output cable 403 shown in FIG. 5B. The display is independent of the image selection screen, and each playback image selection screen has a thumbnail of the top or middle of the moving image arranged as shown in the schematic diagrams of FIGS. 5 (a) and 5 (b). Displayed.

  The user plays an image to be played back on the LCD 402 from the thumbnails TN1 to TN6 on the playback image selection screen displayed on the screen 4020 of the LCD 402 by operating the main body key 405 or on the TV set 404 connected to the AV output cable 403. The desired images can be individually selected from the thumbnails TN11 to TN16 on the playback image selection screen displayed on the screen 4040 of the TV set 404 by operating the remote controller 406 (YES in step S103). In this example, the thumbnail TN2 (the frame is highlighted in comparison with other thumbnails) is selected on the screen 4020 of the LCD 402, and the thumbnail TN15 (in comparison with other thumbnails is selected on the screen 4040 of the TV set 404). Suppose that the frame is highlighted).

  In the following description, an image corresponding to the thumbnail TN2 selected on the screen 4020 of the LCD 402 is referred to as an LCD selection image, and an image corresponding to the thumbnail TN15 selected on the screen 4040 of the TV set 404 is referred to as a monitor selection image.

  However, at this time, the same playback image selection screen (therefore, the thumbnails displayed on them) are displayed on the screen 4020 of the LCD 402 and the screen 4040 of the TV set 404, and different thumbnails are selected on the respective playback image selection screens. It is also possible to do.

  In any case, the thumbnail TN2 selected on the playback image selection screen displayed on the screen 4020 of the LCD 402 as described above, and the thumbnail selected on the playback image selection screen displayed on the screen 4040 of the TV set 404. The moving images specified by the TN 15 can be reproduced on the LCD 402 and the TV set 404 on which a reproduction image selection screen in which the thumbnails TN2 and TN15 are selected is displayed.

  The CPU 105 displays the image selected on the LCD 402 as described above on the screen 4020 of the LCD 402 and the image selected on the TV set 404 as an external monitor on the screen 4040 of the TV set 404 (step S104). Specifically, the CPU 105 executes the following process.

  That the user has selected the thumbnail TN2 on the playback image selection screen displayed on the screen 4020 of the LCD 402 and that the thumbnail TN15 has been selected on the playback image selection screen displayed on the screen 4040 of the TV set 404. Both are transmitted to the control unit 112 via the user IF 214. Thereby, a part of the compressed data of the LCD selected image specified by the thumbnail TN2 selected by the user and the compressed data of the monitor selected image specified by the thumbnail TN15 selected by the user are partially recorded from the top side of the recording medium 209. Is read out by time-sharing processing, sent to the third SDRAM 217 via the recording IF 208 and the DMA controller 111, temporarily buffered, header information and the like are analyzed, and then the image compression / decompression unit via the DMA controller 111. 207. These processes are controlled by the recording IF control unit 108, the DMA controller control unit 104, and the image compression / decompression unit control unit 106 of the control unit 112. In the recording IF control unit 108 and the image compression / decompression unit control unit 106, these processes are performed. Each of the two-image reproduction switching units 1082 and 1062 executes time division processing.

  By the way, in the above processing, as shown in FIG. 6, buffer areas for both image data are allocated to the buffer area 217B of the third SDRAM 217. That is, the buffer area indicated by reference numeral 217B1 in FIG. 6 is a buffer area for an LCD selection image, and the buffer area indicated by reference numeral 217B2 is a buffer area for a monitor selection image.

  Next, according to the program stored in the program ROM 218, the CPU 105 compresses the compressed data of the LCD selection image and the monitor selection image respectively buffered in both the buffer areas 217B1 and 217B2 of the third SDRAM 217 via the DMA controller 111. It is sent to the expansion unit 207 by time division processing. At this time, since it is necessary to reproduce two images on the LCD 402 and the TV set 404 at the same time, the CPU 105 converts the compressed data for each frame of the LCD selection image and the monitor selection image into both buffer areas 217B1 of the third SDRAM 217. , 217B2 are alternately read in a time-sharing manner and sent to the image compression / decompression unit 207.

  On the other hand, the image compression / decompression unit 207 uses the second SDRAM 204 as a buffer. Specifically, as in the case of the third SDRAM 217 shown in FIG. 6, the buffer area 204B of the second SDRAM 204 is shown as “()” in FIG. The buffer area for two images of the buffer area 204B1 for the LCD selection image and the buffer area 204B2 for the monitor selection image is allocated in advance, and the image for each one frame read out from the third SDRAM 217 and sent. The data is decompressed and the result is buffered in the buffer areas 204B1 and 204B2 in the second SDRAM 204. At this time, if the image data decompression process by the image compression / decompression unit 207 takes too much time, specifically, if the decompression process cannot be completed within the display time of each frame, the CPU 105 reduces the frame rate (frames). The decompression processing load of the image compression / decompression unit 207 is reduced by processing such as cutting out the high frequency portion of the MPEG quantization table.

  Note that when the image compression / decompression unit 207 performs compression / decompression processing according to the MPEG system, the buffer area 204B in the second SDRAM 204 is normally allocated for one image data as shown in FIG. The I picture, the P picture, and the B picture are reconstructed using the area allocated for the image data and output. However, in the video camera 401 which is the image playback apparatus of the present invention, when two screens are played back simultaneously, as shown in FIG. 6, each image is used by using areas 204B1 and 204B2 allocated for two image data. The image compression / decompression unit 207, which is an MPEG decoder, is operated in a time division manner on the I picture, P picture, and B picture of the data to construct an image.

  At this time, if the image compression / decompression processing capability of the image compression / decompression unit 207 is at least twice that of normal reproduction, the two images can be reproduced at a normal speed (frame rate). However, if this is not the case, a device for reducing the load of the decompression process by the image compression / decompression unit 207 is required. In the present invention, the following two methods are adopted.

  The first is a method of thinning out the number of frames. By thinning out the number of frames of each of two image data, processing can be performed within the processing capability of the image compression / decompression unit 207. In the MPEG system, the I picture cannot be thinned out, but if the B and P pictures are thinned out and reproduced, there is no possibility of degrading the image quality so much.

  The second is a method of reducing the image size (reducing the number of pixels) during MPEG processing. Specifically, in order to reduce the burden of IDCT (Inverse Discrete Cosine Transform) processing, the amount of calculation in IDCT is reduced by cutting high-frequency components in the portion where inverse quantization is performed. As a result, the frame rate can be maintained.

  Each frame of image data decompressed by the image compression / decompression unit 207 in this way is sent to the first SDRAM 205 via the SDRAM IF 206. As for the buffer area 205B of the first SDRAM 205, as shown by “()” in FIG. 6, buffer areas 205B1 and 205B2 for two images for the LCD selection image and the monitor selection image are allocated in advance, and the respective buffer areas 205B are assigned. Each image data is buffered in the areas 205B1 and 205B2.

  At the same time, the display IF control unit 210 reads the data of the LCD selection image from the buffer area 205B1 of the first SDRAM 205, reads the data of the monitor selection image from the buffer area 205B2, and outputs it to the AV output terminal 216. As a result, the LCD 402 selects the playback image selection screen previously displayed on the screen 4020 of the LCD 402, and the TV set 404 previously selects the playback image selection screen previously displayed on the screen 4040 of the TV set 404. Different images specified by the thumbnails TN2 and TN15 are reproduced and displayed. These processes are controlled by the image compression / decompression unit control unit 106, SDRAMIF control unit 102, and display IF control unit 107 of the control unit 112. The image compression / decompression unit control unit 106, SDRAMIF control unit 102, and display IF control unit 107 are controlled. In FIG. 2, the two-image reproduction switching units 1062, 1022 and 1072 execute time division processing.

  While the images selected by the user are individually displayed on both the LCD 402 and the TV set 404 as described above, the CPU 105 determines whether or not the main body key 405 or the remote controller 406 is operated (steps S105 and S109). . When the main body key 405 is operated (YES in step S105), the CPU 105 next determines whether or not “operation target replacement” is set (step S106). The setting of “operation target replacement” will be described later.

  When the “replacement of operation target” is not set (NO in step S106), the CPU 105 checks the value of the flag F (step S107). Since it is “1” (YES in step S107), the CPU 402 The displayed image is processed according to the operation of the main body key 405 (step S108). Specifically, for example, when an instruction such as fast forward, rewind, or slow playback is given by the user operating the main body key 405, the display of the image displayed on the LCD 402 is controlled accordingly. On the other hand, when the remote controller 406 is operated (YES in step S109), the CPU 105 checks the value of the flag F (step S110). Since it is “1” (YES in step S110), it is displayed on the TV set 404. The processed image is processed according to the operation of the remote controller 406 (step S111). Specifically, for example, when an instruction such as fast forward, rewind, or slow playback is given by the user operating the remote control 406, the display of the image displayed on the TV set 404 is controlled accordingly.

  Next, the CPU 105 determines whether or not an end instruction has been given from the main body key 405 or the remote controller 406, or whether or not image reproduction has ended (step S112). ), The process is returned to step S105. If it is any (YES in step S112), the process returns.

  By the way, when “replace operation target” is set in the previous step S106 (YES in step S106), the CPU 105 determines “0” if the flag F is “1” (YES in step S113). (Step S115), if the flag F is “0” (NO in step S113), it is set to “1” (step S114).

  Accordingly, since the flag F is initially set to “1”, the determination result in step S107 is “YES” as described above. Accordingly, the CPU 105 processes the image displayed on the LCD 402 in accordance with the operation of the main body key 405. In this case, the determination result in step S110 is also “YES”, so that the CPU 105 processes the image displayed on the TV set 404 in accordance with the operation of the remote controller 406. However, once “replace operation target” is set in step S106 and the value of the flag F is changed from the initial “1” to “0”, the determination result in step S107 becomes “NO”. Accordingly, the CPU 105 processes the image displayed on the TV set 404 in accordance with the operation of the main body key 405 (step S111). In this case, since the determination result in step S110 is also “NO”, the CPU 105 processes the image displayed on the LCD 402 in accordance with the operation of the remote controller 406 (step S108).

  However, if the setting of “replace operation target” is performed again in step S106 (YES in step S106), the CPU 105 reverses the value of the flag F so that the initial state, that is, in step S108. The image displayed on the LCD 402 is processed according to the operation of the main body key 405, and the image displayed on the TV set 404 is processed according to the operation of the remote controller 406 in step S111. That is, every time the “operation object replacement” setting is made in step S106, the image of the operation object by the main body key 405 and the remote controller 406 is repeatedly replaced.

  Next, the processing procedure by the CPU 105 in the “external monitor two-image display mode (1)” of step S15 of the main routine of FIG. 3 will be described with reference to the flowchart of FIG. The “external monitor two-image display mode (1)” is a mode that is automatically executed when only the TV set 404 that is an external monitor can be used.

  First, the CPU 105 displays a reproduction image selection screen on the screen 4040 of the TV set 404 that is an external monitor (step S200). In this case, there is one reproduction image selection screen displayed on the screen 4040 of the TV set 404, and a plurality of thumbnails are arranged. Here, when the user operates main unit key 405 or remote controller 406 to select two thumbnails (YES in step S201), CPU 105 next accepts designation of a display style. Specifically, the display style is, for example, whether two images are arranged on the left and right on the screen 4040 of the TV set 404 or are arranged on the top and bottom.

  When the user designates one of the display styles (YES in step S202), the CPU 105 next displays the designated two images on the screen 4040 of the TV set 404 as the external monitor in the designated style (step S203). The main body key 405 is assigned to the image displayed on the left side (or upper side) of the screen 4040 of the TV set 404, and the remote control 406 is assigned to the image displayed on the right side (or lower side) (step S204). At this time, if the two images can be displayed at the same time on the screen 4040 of the TV set 404 without overlapping portions, the images are not reduced. However, if the two images cannot be displayed on the screen 4040 of the TV set 404 at the original size, both the two images or any one of the images is reduced and displayed.

  FIG. 8A is a schematic diagram showing a state in which two images IM1 and IM2 are arranged on the left and right on the screen 4040 of the TV set 404 as described above, and FIG. 8B is the same. FIG. 6 is a schematic diagram showing a state in which two images IM1 and IM2 are arranged vertically and displayed.

  Then, the CPU 105 determines whether the main body key 405 or the remote controller 406 has been operated (steps S205 and S206). When the main body key 405 is operated (YES in step S205), the CPU 105 next responds to the operation of the main body key 405 with the image IM1 displayed on the left side (or upper side) of the screen 4040 of the TV set 404 as an external monitor. (Step S207). Specifically, for example, when instructions such as fast-forward, rewind, and slow playback are given by the user operating the main body key 405, they are displayed on the left side (or the upper side) of the screen 4040 of the TV set 404 according to each instruction. Display control of the image IM1. On the other hand, when the remote controller 406 is operated (YES in step S206), the CPU 105 displays the image IM2 displayed on the right side (or lower side) of the screen 4040 of the TV set 404 as an external monitor in accordance with the operation of the remote controller 406. Process (step S208). Specifically, for example, when instructions such as fast forward, rewind, and slow playback are given by the user operating the remote control 406, they are displayed on the right side (or the lower side) of the screen 4040 of the TV set 404 according to each instruction. The display control is performed on the image IM2.

  Next, the CPU 105 determines whether or not an end instruction is given from the main body key 405 or the remote control 406 or whether or not the reproduction of the image has ended (step S209). ), The process is returned to step S205, and if it is any (YES in step S209), the process returns.

  Next, the processing procedure by the CPU 105 in the “LCD 2 image display mode (1)” of step S17 of the main routine of FIG. 3 will be described with reference to the flowchart of FIG. This “LCD2 image display mode (1)” is a mode that is automatically executed when only the LCD 402 is usable.

  First, the CPU 105 displays a reproduction image selection screen on the screen 4020 of the LCD 402 (step S300). In this case, there is one reproduction image selection screen displayed on the screen 4020 of the LCD 402, and a plurality of thumbnails are arranged. If the user operates main body key 405 or remote controller 406 to select two thumbnails (YES in step S301), CPU 105 next accepts designation of a display style. Specifically, the display style is, for example, whether two images are arranged on the screen 4020 of the LCD 402 on the left or right, or arranged on the top and bottom.

  When the user designates one of the display styles (YES in step S302), the CPU 105 next displays the designated two images in the designated style on the screen 4020 of the LCD 402 (step S303), and the left side of the screen 4020 of the LCD 402. The main body key 405 is assigned to the image displayed on (or the upper side), and the remote control 406 is assigned to the image displayed on the right (or lower) side (step S304). At this time, if the two images can be displayed at the same time on the screen 4020 of the LCD 402 without overlapping portions while maintaining the original size, the images are not reduced. However, when the two images cannot be displayed on the screen 4020 of the LCD 402 at the original size at the same time, both the two images or any one of the images is reduced and displayed.

  FIG. 10A is a schematic diagram showing a state in which two images IM1 and IM2 are arranged on the left and right sides and displayed on the screen 4020 of the LCD 402 as described above, and FIG. It is a schematic diagram which shows the state by which two images IM1 and IM2 are arranged and displayed up and down.

  Then, the CPU 105 determines whether or not the main body key 405 or the remote controller 406 has been operated (steps S305 and S306). When the main body key 405 is operated (YES in step S305), the CPU 105 next processes the image IM1 displayed on the left side (or upper side) of the screen 4020 of the LCD 402 in accordance with the operation of the main body key 405 (step S307). ). Specifically, for example, when an instruction such as fast forward, rewind, or slow playback is given by the user operating the main body key 405, an image displayed on the left side (or upper side) of the screen 4020 of the LCD 402 according to each instruction Controls display of IM1. On the other hand, when remote controller 406 is operated (NO in step S305, YES in step S306), CPU 105 processes image IM2 displayed on the right side (or lower side) of screen 4020 of LCD 402 in accordance with the operation of remote controller 406. (Step S308). Specifically, for example, when an instruction such as fast forward, rewind, or slow playback is given by the user operating the remote control 406, the image IM2 displayed on the left side (or upper side) of the screen 4020 of the LCD 402 according to each instruction Display control.

  Next, the CPU 105 determines whether or not an end instruction has been given from the main body key 405 or the remote controller 406, or whether or not image reproduction has ended (step S309). ), The process is returned to step S305, and if it is any (YES in step S309), the process returns.

  Next, the processing procedure by the CPU 105 in the “LCD 2 image display mode (2)” of step S19 of the main routine of FIG. 3 will be described with reference to the flowcharts of FIGS. The “LCD 2 image display mode (2)” is a mode in which both the LCD 402 and the TV set 404 as an external monitor can be used, but two images are simultaneously displayed only on the screen 4020 of the LCD 402 by the user's selection. .

  First, the CPU 105 displays a reproduction image selection screen on the screen 4020 of the LCD 402 (step S400). In this case, there is one reproduction image selection screen displayed on the screen 4020 of the LCD 402, and a plurality of thumbnails are arranged. Here, when the user operates main unit key 405 or remote controller 406 to select two thumbnails (YES in step S401), CPU 105 next accepts designation of a display style. Specifically, the display style is, for example, whether two images are arranged on the screen 4020 of the LCD 402 on the left or right, or arranged on the top and bottom.

  When the user designates one of the display styles (YES in step S402), the CPU 105 then displays the designated two images on the screen 4020 of the LCD 402 in the designated style (step S403), and the left side of the screen 4020 of the LCD 402. The main body key 405 is assigned to the image displayed on (or the upper side), and the remote control 406 is assigned to the image displayed on the right (or lower) side (step S404). At this time, if the two images can be displayed at the same time on the screen 4020 of the LCD 402 without overlapping portions while maintaining the original size, the images are not reduced. However, when the two images cannot be displayed on the screen 4020 of the LCD 402 at the original size at the same time, both the two images or any one of the images is reduced and displayed.

  In this case, the display states of the two images IM1 and IM2 on the screen 4020 of the LCD 402 are the same as the states shown in FIGS. 10 (a) and 10 (b).

  Then, the CPU 105 determines whether or not the main body key 405 or the remote controller 406 has been operated (steps S405 and S406). When the main body key 405 is operated (YES in step S405), the CPU 105 next processes the image IM1 displayed on the left side (or upper side) of the screen 4020 of the LCD 402 in accordance with the operation of the main body key 405 (step S407). ). Specifically, for example, when an instruction such as fast forward, rewind, or slow playback is given by the user operating the main body key 405, an image displayed on the left side (or upper side) of the screen 4020 of the LCD 402 according to each instruction Controls display of IM1. On the other hand, when remote controller 406 is operated (YES in step S406), CPU 105 processes image IM2 displayed on the right side (or lower side) of screen 4020 of LCD 402 in accordance with the operation of remote controller 406 (step S408). . Specifically, for example, when an instruction such as fast-forward, rewind, or slow playback is given by the user operating the remote control 406, an image displayed on the right side (or lower side) of the screen 4020 of the LCD 402 in accordance with each instruction Display control of IM2.

  Next, the CPU 105 determines whether one of the images is stopped (in the case of a user operation) or has ended (step S410). If it is neither (NO in step S410), CPU 105 advances the process to step S415, which will be described later. However, if one image is stopped or ended (YES in step S410), the CPU 105 displays the other image (the image that has not been stopped or ended) on the screen 4020 of the LCD 402: in this case, FIG. (a) or image IM1 shown in FIG. 10 (b)) is displayed on the full screen as shown in FIG. 13 (a) from the state shown in FIG. 10 (a) or 10 (b) (step S411). A reproduction image selection screen is displayed on the screen 4040 of the TV set 404 as an external monitor as shown in FIG. 13B (step S412). When the user newly selects, for example, an image specified by thumbnail TN16 from the playback image selection screen displayed on screen 4040 of TV set 404 (YES in step S413), CPU 105 returns the process to step S404. In this case, on the screen 4020 of the LCD 402, two images, for example, an image IM16 specified by the thumbnail TN16 specified by the user in the style previously specified by the user in step S402 and an image IM1 that has been displayed on the full screen until then are displayed. It is displayed as shown in 13 (c). The subsequent processing is the same as described above.

  Note that if the user does not select a new image in step S413 (NO in step S413), all the images will eventually end (YES in step S414). In this case, the CPU 105 returns the process. In addition, when the result of determination in step S410 is NO, the CPU 105 returns the process when the user instructs the end (YES in step S415). If the user does not instruct termination (NO in step S415), the process returns to step S405.

  Next, the processing procedure by the CPU 105 in the “external monitor two-image display mode (2)” of step S21 of the main routine of FIG. 3 will be described with reference to the flowcharts of FIGS. Note that this “external monitor 2 image display mode (2)” can be used for both the LCD 402 and the TV set 404 as an external monitor, but only 2 on the screen 4040 of the TV set 404 as an external monitor by the user's selection. In this mode, images are displayed simultaneously.

  First, the CPU 105 displays a reproduction image selection screen on the screen 4040 of the TV set 404 (step S500). In this case, there is one reproduction image selection screen displayed on the screen 4040 of the TV set 404, and a plurality of thumbnails are arranged. Here, when the user operates main unit key 405 or remote controller 406 to select two thumbnails (YES in step S501), CPU 105 next accepts designation of a display style. Specifically, the display style is, for example, whether two images are arranged on the left and right on the screen 4040 of the TV set 404 that is an external monitor, or arranged on the top and bottom.

  When the user designates any display style (YES in step S502), the CPU 105 next displays the designated two images on the screen 4040 of the TV set 404 in the designated style (step S503). The main body key 405 is assigned to the image displayed on the left side (or upper side) of the screen 4040, and the remote controller 406 is assigned to the image displayed on the right side (or lower side) (step S504). At this time, if the two images can be displayed at the same time on the screen 4040 of the TV set 404 without overlapping portions, the images are not reduced. However, if the two images cannot be displayed on the screen 4040 of the TV set 404 at the original size, both the two images or any one of the images is reduced and displayed.

  In this case, the display state of the two images IM1 and IM2 on the screen 4040 of the TV set 404 is the same as the state shown in FIGS. 8 (a) and 8 (b).

  Then, the CPU 105 determines whether the main body key 405 or the remote controller 406 has been operated (steps S505 and S506). When the main body key 405 is operated (YES in step S505), the CPU 105 next processes the image IM1 displayed on the left side (or upper side) of the screen 4040 of the TV set 404 according to the operation of the main body key 405 ( Step S507). Specifically, for example, when instructions such as fast-forward, rewind, and slow playback are given by the user operating the main body key 405, they are displayed on the left side (or the upper side) of the screen 4040 of the TV set 404 according to each instruction. Display control of the image IM1. On the other hand, when remote controller 406 is operated (NO in step S505, YES in step S506), CPU 105 responds to operation of remote controller 406 with image IM2 displayed on the right side (or lower side) of screen 4040 of TV set 404. (Step S508). Specifically, for example, when instructions such as fast forward, rewind, and slow playback are given by the user operating the remote control 406, they are displayed on the right side (or the lower side) of the screen 4040 of the TV set 404 according to each instruction. The display control is performed on the image IM2.

  Next, the CPU 105 determines whether one of the images is stopped (in the case of a user operation) or finished (step S510). If it is neither (NO in step S510), CPU 105 advances the process to step S514, which will be described later. However, if one image is stopped or ended (YES in step S510), the CPU 105 displays the other image (the image that has not been stopped or ended on the screen 4040 of the TV set 404: in this case). The image IM2 shown in FIG. 8 (a) or FIG. 8 (b) is displayed on the full screen as shown in FIG. 16 (a) from the state shown in FIG. 8 (a) or FIG. 8 (b) (step S511). ), A playback image selection screen is displayed on the screen 4020 of the LCD 402 as shown in FIG. 16B (step S512). When the user newly selects, for example, an image specified by thumbnail TN6 from the reproduction image selection screen displayed on screen 4020 of LCD 402 (YES in step S513), CPU 105 returns the process to step S504. In this case, the screen 4040 of the TV set 404 includes two images, the image IM6 specified by the thumbnail TN6 specified by the user in the style previously specified by the user in step S502 and the image IM2 that has been displayed on the entire screen until then. For example, it is displayed as shown in FIG. The subsequent processing is the same as described above.

  Note that if the user does not select a new image in step S514, all images will eventually be completed (YES in step S514). In this case, the CPU 105 returns the process.

  If the determination result in step S514 is NO, the CPU 105 returns the process to step S505.

  In the above-described embodiment, a video camera is taken as an example of the image playback device of the present invention. However, in an image playback device such as a video camera, the device itself includes a display device such as an LCD, It is possible to connect an external monitor such as a TV set. As this type of image playback device, the device itself is equipped with a digital still camera capable of shooting and playback of moving images, a mobile phone capable of shooting and playback of moving images and still images, and an auxiliary display device such as an LCD. In addition to the display device provided in the video deck (HDD, disk medium) and the device itself, a personal computer that can be connected to an external display device such as a TV set can be considered, and the present invention is also applied to them. It goes without saying that it is possible.

  Furthermore, even if the device itself does not include a display device, the present invention can be applied to a video deck (HDD, disk medium use), DVD player, etc. to which a plurality of external display devices can be connected. Needless to say.

It is a block diagram which shows the structural example of the control part of the video camera as an image reproduction apparatus of this invention. It is a block diagram which shows the hardware constitutions of the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the main routine of CPU of the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a schematic diagram of the reproduction | regeneration image selection screen displayed with the video camera as an image reproduction apparatus of this invention. It is a schematic diagram which shows the area | region allocated for the image of the buffer memory of the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a schematic diagram which shows the example of an image display with the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a schematic diagram which shows the example of an image display with the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a schematic diagram which shows the example of an image display with the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a flowchart which shows the process sequence of the subroutine of CPU of the video camera as an image reproduction apparatus of this invention. It is a schematic diagram which shows the example of an image display with the video camera as an image reproduction apparatus of this invention. 1 is a schematic diagram illustrating an example of an overall system configuration when a video camera is used as an image playback device. It is a block diagram which shows the hardware constitutions of the video camera as a conventional image reproduction apparatus. It is a block diagram which shows the structural example of the control part of the video camera as a conventional image reproduction apparatus. It is a schematic diagram of the reproduction | regeneration image selection screen displayed with the video camera as a conventional image reproduction apparatus. It is a schematic diagram which shows the area | region allocated for the image of the buffer memory of the video camera as a conventional image reproduction apparatus.

Explanation of symbols

101 signal processing unit control unit 104 DMA controller control unit 105 CPU
106 Image compression / expansion control unit 107 Display IF control unit 109 User IF control unit 111 DMA controller 112 Control unit 113 Microcomputer 207 Image compression / expansion unit 209 Recording medium 210 Display IF
214 User IF
402 LCD (Liquid Crystal Display)
216 AV output terminal 401 Video camera 404 TV set 405 Main body key input 406 Remote control 1022 Two-image reproduction switching unit of SDRAMIF control unit 1062 Two-image reproduction switching unit of image compression / decompression unit control unit 1072 Two-image reproduction switching unit of display IF control unit 1082 Two-image reproduction switching unit of recording IF control unit

Claims (17)

A recording medium capable of accessing a plurality of files simultaneously by time division access;
Data reading means for simultaneously reading out a plurality of image data files recorded on the recording medium by time-division access;
An image reproduction apparatus comprising: display control means for displaying on a display device together image data of a plurality of files read by the data reading means.   2. The data reading unit according to claim 1, wherein when the image data is a moving image, the data reading unit is configured to read out the image data from the recording medium by thinning out the data in units of frames constituting the moving image. The image reproducing device described.   2. The image reproducing apparatus according to claim 1, wherein the display control means reduces the image size and displays the image on the display apparatus.   4. The image reproducing apparatus according to claim 1, wherein the display control means is arranged to display a plurality of image data by arranging them on the screen of the display device vertically and / or horizontally. An operation means for controlling the image display; and a remote control device for controlling the image display;
The display control means is configured to perform display control of different image data displayed on the display device in accordance with an operation of the operation means and an operation of the remote control device. 5. The image reproducing device according to 4.   2. The image reproducing apparatus according to claim 1, wherein the display control means is configured to display image data of a plurality of files read from the recording medium by the data reading means on a plurality of display devices, respectively. . An operation means for controlling the image display; and a remote control device for controlling the image display;
7. The display control unit is configured to perform display control of image data displayed on different display devices in accordance with an operation of the operation unit and an operation of the remote control device. The image reproducing device described in 1. A recording medium capable of accessing two files simultaneously by time division access;
Data reading means for simultaneously reading two image data files recorded on the recording medium by time-division access;
A display device;
An image reproduction apparatus comprising: display control means for causing the display device to display both image data of the two files read by the data reading means.   9. The data reading unit according to claim 8, wherein when the image data is a moving image, the data reading unit is configured to read out the image data from the recording medium by thinning out the data in units of frames constituting the moving image. The image reproducing device described.   9. The image reproducing apparatus according to claim 8, wherein the display control means reduces the image size and displays the image on the display apparatus.   11. The image reproducing device according to claim 8, wherein the display control means displays two pieces of image data arranged on the screen of the display device vertically or horizontally. An operation means for controlling the image display; and a remote control device for controlling the image display;
The display control means is configured to perform display control of different image data displayed on the display device in accordance with an operation of the operation means and an operation of the remote control device. 11. The image reproducing device according to 11. When an external display device is connected, it further comprises output means for sending image data and displaying it on the external display device,
9. The image reproduction apparatus according to claim 8, wherein the display control means displays one image data on the display device and outputs the other image data from the output means. An operation means for controlling the image display; and a remote control device for controlling the image display;
The display control means includes
A first state in which display control of image data is performed on the display device in accordance with an operation of the operation means, and display control of image data output from the output means is performed in accordance with an operation of the remote control device;
A second state in which display control of image data output from the output means is performed in accordance with an operation of the operation means, and display control of image data on the display device is performed in accordance with an operation of the remote control device; 14. The image reproducing apparatus according to claim 13, wherein the image reproducing apparatus is in any one of the states.   15. The image reproducing apparatus according to claim 14, further comprising means for switching the state of the display control means from the first state to the second state or vice versa. The display control means includes
Two image data are displayed on one of the display device or the external display device connected to the output means,
When display of one of the two image data ends, information for selecting an image to be displayed next is displayed on the other of the display device or the output unit that is not displaying image data. The other image data displayed on the one of the display device or the output means is displayed in full screen,
11. The apparatus according to claim 10, wherein when the next image to be displayed is selected from the information, two image data are displayed on one of the display device and the output means. Image playback device. An operating means for controlling image display; and a remote control device for controlling image display;
The display control means includes
When the external display device is not connected to the output means, display control of different image data displayed on the display device is performed according to the operation of the operation means and the remote control device. Yes,
When the external display device is connected to the output means, two image data are displayed on one of the display device or the external display device connected to the output means,
When display of one of the two image data ends, information for selecting an image to be displayed next is displayed on the other of the display device or the output unit that is not displaying image data. And display one image data displayed on one of the display device or the output means on a full screen,
11. The apparatus according to claim 10, wherein when the next image to be displayed is selected from the information, two image data are displayed on one of the display device and the output means. Image playback device.

Images