JP2004222063A - Digital video reproducing device and digital video recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability and convenience for copying by eliminating the need of discriminating thumbnail pictures of still pictures or not in a thumbnail picture list when copying image data from one recording medium to another recording medium. <P>SOLUTION: MPEG data and thumbnail data of moving pictures and still pictures and JPEG compressed data of still pictures are recorded in a DVD-RAM 11, and management data for managing recording positions of these data is recorded there together. When a command to copy JPEG compressed data in the DVD-RAM 11 to a memory card 18 is given by a button input part 5, thumbnail still picture data corresponding to still pictures is retrieved and read out on the basis of management data and is supplied to a thumbnail list generation part 7 to generate a list of read thumbnail still pictures. This list is displayed on a display part 4, so that a user can select thumbnail pictures of still pictures to be copied, without discriminating between moving pictures and still pictures. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital video playback device and a digital video recording and playback device provided with at least two recording media, and more particularly to a digital video playback device suitable for use in portable devices such as digital still cameras and digital video cameras, and The present invention relates to a digital video recording / reproducing device.
[0002]
[Prior art]
2. Description of the Related Art As conventional digital video reproducing apparatuses and digital video recording / reproducing apparatuses, two recording media are provided, and those capable of copying data between these recording media are increasing. One of such recording media is a memory card, which has attracted attention because of its compact size and convenience of carrying. Particularly, in a portable device such as a digital video reproducing device or a video camera equipped with the digital video recording / reproducing device. , The one that adopts this is increasing. In such portable devices, such memory cards and other recording media are used. Image data recorded on the recording media is copied to a memory card, and the memory card is copied to another memory such as a personal computer. The image data copied to the memory card is reproduced by using the apparatus.
[0003]
In the portable device as described above, a recording medium such as an optical disk having a large recording capacity is usually used as the other recording medium, so that a moving image or a still image can be recorded. Then, in order to enhance the convenience of reproducing or copying the image data from the large-capacity recording medium, an image representative of the image data (for example, in the case of a moving image, the first image, In the case of an image, a function for displaying a list of thumbnail images (thumbnail images) of the still images themselves) is provided, and the user selects a desired thumbnail image on the thumbnail list screen, By performing a predetermined operation, a moving image or a still image corresponding to the thumbnail image can be easily reproduced or copied to a memory card or the like.
[0004]
As a conventional technique relating to convenience at the time of copying with such an apparatus, the present applicant has developed a technique of copying moving image and still image data recorded on a small capacity memory card to a large capacity optical disc. It was proposed (for example, see Patent Document 1).
[0005]
This displays a thumbnail list corresponding to the moving images and still images recorded on the memory card, and reads the moving image or still image data corresponding to the selected thumbnail image from the memory card and copies it to the optical disk. It is possible to copy, and is excellent in convenience at the time of copying. Conversely, a thumbnail list is similarly displayed for image data recorded on an optical disk, and a moving image or a still image corresponding to the selected thumbnail image can be copied to a memory card. .
[0006]
[Patent Document 1]
JP-A-11-66736
[0007]
[Problems to be solved by the invention]
By the way, memory cards are small and convenient to carry, but the recording capacity is relatively small, so the capacity for recording moving images is limited, so they are not suitable for recording moving images. It is generally used for recording. That is, image data to be copied from a recording medium such as an optical disk having a large recording capacity to a memory card is still image data, and is generally used for reproduction by another device such as a personal computer.
[0008]
However, when copying still images to a memory card from a recording medium such as an optical disk on which moving image and still image data are recorded, thumbnail images of moving images and still images are mixedly displayed in the thumbnail list. Is done. For this reason, the user must determine which of the displayed thumbnail images is a still image, and there is a problem in operability. In addition, a thumbnail image is usually not distinguished from a moving image and a still image. Therefore, it is difficult to determine whether the thumbnail image is a moving image or a still image on the thumbnail list screen. Was.
[0009]
An object of the present invention is to solve such a problem and eliminate the need to determine whether or not a still image is a thumbnail image on a thumbnail list screen when copying image data from a recording medium to another recording medium, and to improve copy operability. Another object of the present invention is to provide a digital video reproducing apparatus and a digital video recording / reproducing apparatus which can improve convenience.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a digital video reproducing apparatus according to the present invention records video data of moving images and still images, thumbnail data corresponding to the moving images and still images, and management data for associating the video data with the thumbnail data. A reproduction processing unit for reproducing the video data and the thumbnail data from the first recording medium based on the management data, and a video data reproduced by the reproduction processing unit. A display unit for displaying a moving image or a still image, a thumbnail list generation unit for generating a thumbnail list image representing a list of thumbnail data reproduced by the reproduction processing unit and displaying the thumbnail list image on the display unit, and thumbnail data corresponding to the still image A still image thumbnail selection control unit for extracting and controlling the The reproduction processing unit reads only the thumbnail data corresponding to the still image from the first recording medium based on the management data, and the thumbnail list generation unit corresponds to the still image read by the reproduction processing unit. A still image thumbnail list image including only thumbnail data is generated and displayed on the display unit.
[0011]
In the digital video reproducing apparatus according to the present invention, a second recording medium capable of recording still image data and management data is removably mounted, and the second recording medium stores still image video data and its management data. A processing unit for recording, and copying of the still image data on the first recording medium corresponding to the thumbnail data of the still image selected in the still image thumbnail list image displayed on the display unit to the second recording medium An operation control unit for instructing copying of the still image data for which copying has been instructed based on the management data recorded on the first recording medium based on the management data recorded on the first recording medium. Is read from the recording medium and recorded on the second recording medium.
[0012]
Further, the digital video reproducing apparatus according to the present invention is characterized in that the recording capacity of the first recording medium is larger than the recording capacity of the second recording medium.
[0013]
Further, in the digital video reproducing apparatus according to the present invention, the video data of the moving image recorded on the first recording medium is MPEG moving image data compressed in accordance with the MPEG standard, and the still image recorded on the first recording medium. The image video data is MPEG still image data compressed according to the MPEG standard and JPEG compressed data compressed according to the JPEG standard. The JPEG compressed image data is copied to the second recording medium. What is data.
[0014]
In order to achieve the above object, a digital video reproducing apparatus according to the present invention comprises the above digital video reproducing apparatus, an MPEG compression unit for compressing an input video signal in accordance with the MPEG standard and generating MPEG data, A thumbnail generation unit that generates thumbnail image data from the signal, and a JPEG compression unit that generates a JPEG compressed data by compressing the input video signal according to the JPEG standard when the input video signal is video data of a still image. When the input video signal is video data of a video, MPEG video data from an MPEG compression unit and thumbnail video data from a thumbnail generation unit are recorded on a first recording medium together with these management data, and Is still image data, the MPEG still image data from the MPEG compression unit and the thumbnail generation unit Et of the JPEG compressed data from the thumbnail still image data and the JPEG compression section, with these management data, and records the first recording medium.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is a block diagram showing an embodiment of a digital video recording / reproducing apparatus according to the present invention, wherein 1 is a reproduction processing unit, 2 is a digital video decompression unit, 3 is a video signal processing unit, 4 is a display unit, Is a button input unit, 6 is an operation control unit, 7 is a thumbnail list generation unit, 8 is a still image thumbnail selection control unit, 11 is a DVD-RAM (Digital Versatile Disc-Ramdom Access Memory), 12 is a video signal input unit, 13 Is a digital video signal processing section, 14 is an MPEG video compression section, 15 is a thumbnail generation section, 16 is a JPEG data generation section, 17 is a recording processing section, 18 is a memory card, 19 is a copy work processing section, and 20 is JPEG recording processing. Department.
[0017]
This embodiment shown in FIG. 1 is an example in which the present invention is applied to a DVD camera, and includes a DVD-RAM 11 and a memory card 18 as recording media, and at least the memory card 18 is detachable. . Here, it is assumed that moving image data and still image data are recorded on the DVD-RAM 11, and still image data is recorded on the memory card 18. This embodiment has a recording function capable of recording on at least one recording medium (DVD-RAM), that is, a video signal input unit 12, a digital video signal processing unit 13, an MPEG video compression unit 14, and a thumbnail. Although the digital video recording / reproducing device includes the generating unit 15, the JPEG generating unit 16, and the recording processing unit 17, the digital video reproducing device may not include the recording function. Except for the recording function, the same applies to the digital video recording / reproducing device and the digital reproducing device. However, in this case, the DVD-RAM 11 is also always removable, like the memory card 18.
[0018]
In FIG. 1, a DVD-RAM 11 includes a moving image / still image MPEG data recording area in which moving image and still image data (hereinafter referred to as MPEG data) compressed in accordance with the MPEG (Moving Picture Expert Group) standard is recorded. , A thumbnail data recording area in which thumbnail images of moving image data and still image data are recorded, and still image data (hereinafter, referred to as JPEG data) compressed according to the JPEG (Joint Photographic Expert Group) standard. A JPEG data recording area and a management data recording area in which management data of data recorded in the above-described recording area is recorded are provided. The memory card 18 is provided with a JPEG data recording area for recording JPEG data and a management data recording area for recording management data of the JPEG data recording area.
[0019]
Next, the recording operation of this embodiment will be described.
[0020]
An analog video signal input from a video signal input unit 12 including an imaging unit and the like is supplied to a video signal processing unit 13, where it is converted into a digital video signal and various signal processes are performed.
[0021]
When the input video signal is video data, the digital video signal from the video signal processing unit 13 is subjected to compression processing according to the MPEG standard by the MPEG video compression unit 14 to become MPEG video data. Is recorded in the moving image / still image MPEG data recording area of the DVD-RAM 11. The digital video signal is supplied to the thumbnail generation unit 15, and data of a screen image (for example, the image of the first screen of the moving image data) representative of the moving image data is subjected to compression processing to generate thumbnail data (thumbnail moving image). Data) is generated. The thumbnail data is recorded in the thumbnail data recording area of the DVD-RAM 11 by the recording processing unit 17. When recording the MPEG moving image data and the thumbnail moving image data, the recording processing unit 17 generates management data for associating the MPEG moving image data with the thumbnail moving image data in the DVD-RAM 11, and manages the DVD-RAM 11. It is recorded in the data recording area.
[0022]
When the input video signal is still image data, the digital video signal from the video recording processing unit 13 is converted to MPEG still image data by the MPEG video compression unit 14 as in the case of the moving image data. 15, the image of the still image data (still image) itself is subjected to compression processing to generate thumbnail data (thumbnail still image data), and the recording processing unit 17 executes the moving image / still image MPEG of the DVD-RAM 11 respectively. It is recorded in a data recording area and a thumbnail data recording area. Further, the digital video signal of the still image is subjected to compression processing according to the JPEG standard by the JPEG generation unit 16 to become JPEG compressed data, and is recorded in the JPEG data recording area of the DVD-RAM 11 by the recording processing unit 17. At the same time, the recording processing unit 17 generates management data for associating the MPEG still image data, the thumbnail still image data, and the JPEG compressed data in the DVD-RAM 11, and stores the management data in the management data recording area of the DVD-RAM 11. Be recorded.
[0023]
As shown in FIG. 2, the management data recorded in the management data recording area of the DVD-RAM 11 includes recording order data indicating the recording order of moving image and still image data, and whether the recorded data is a moving image or a still image. , A recording start address (thumbnail address) of moving image and still image data in the thumbnail data recording area, and a recording start address of moving image and still image data in the moving image / still image MPEG data recording area (thumbnail address). An MPEG address) and a recording start address (JPPEG address) of still image data in the JPEG data recording area.
[0024]
With this management data, the recording positions of the thumbnail data, MPEG data, and JPEG data generated from the same image data on the DVD-RAM 11 are managed by the thumbnail address, the MPEG address, and the JPEG address, respectively. , MPEG data, and JPEG data are associated with each other. For example, according to the thumbnail address, the thumbnail moving image data of the moving image data having the recording order “1” is recorded from the address “100” of the thumbnail data recording area. Similarly, the MPEG moving image data is recorded according to the MPEG address. This means that the moving image / still image is recorded from the address “100000” of the MPEG data recording area. In the case of moving image data, the JPEG data recording area is not used. The same applies to still image data. However, since the JPEG compressed data is also recorded in the JPEG data recording area, the JPEG address is set.
[0025]
Next, reproduction of data from the DVD-RAM 11 will be described.
[0026]
In FIG. 1, first, when a predetermined reproduction operation is performed from the button input unit 5, the reproduction processing unit 1 reads the management data from the management data recording area of the DVD-RAM 11 under the control of the operation control unit 6 and reads the management data. Based on the thumbnail address of the data (FIG. 2), all the thumbnail data (thumbnail moving image data and thumbnail still image data) are read from the thumbnail data recording area of the DVD-RAM 11 and supplied to the thumbnail list generation unit 7. The thumbnail list generation unit 7 generates a list of these thumbnail data, that is, thumbnail list data. Cursor data is also added to the thumbnail list data when it is generated. The thumbnail list data is subjected to various processes such as digital-analog conversion in the video signal processing unit 3, and then supplied to the display unit 4, where the thumbnail list is displayed as shown in FIG.
[0027]
That is, the thumbnail list 22 is displayed as a thumbnail selection screen 21. In the thumbnail list 22, thumbnail moving images 23 based on thumbnail moving image data represented by M1, M2,..., M8 and thumbnails represented by S1, S2,. The thumbnail still images 24 based on the still image data are arranged and displayed in an order according to the recording order data (FIG. 2) in the management data.
[0028]
As shown in FIG. 3A, in the thumbnail list 22, a cursor 25 for selecting a thumbnail is displayed by being superimposed on one of the thumbnail images by the cursor data, and the cursor 25 is overlapped. The thumbnail image is in a selected state (here, the case where the thumbnail image matches the first thumbnail moving image M1 as a default is selected). The cursor up button 26, the cursor down button 27, the cursor left button 28, and the cursor right button 29 shown in FIG. 3 (b) in the button input unit 5 (FIG. 1) 26 to 29), a request to change the display position of the cursor 25 is sent from the operation control unit 6 to the thumbnail list generation unit 7, and the display position of the cursor 25 is changed in response to this request. As a result, the cursor 25 can be moved to another thumbnail image and selected. Note that the thumbnail list generation unit 7 returns a response to the operation processing unit 6 after the display position change processing of the cursor 25. When a response is returned from the thumbnail list generation unit 7, the control processing unit 6 recognizes the thumbnail image selected by the cursor 25 based on the recording order data in the previously acquired management data.
[0029]
When the enter button 30 shown in FIG. 3B in the button input unit 5 (FIG. 1) is operated in a state where a desired thumbnail image is selected by the cursor 25, the selection of the thumbnail image is determined (confirmed). You. When the selection of the desired thumbnail image is determined in this way, in FIG. 1, under the control of the operation control unit 6, the reproduction processing unit 1 reads the management data from the management data recording area of the DVD-RAM 11, and Based on the thumbnail image (recording order data) selected and determined by the cursor 25 recognized by the control processing unit 6, MPEG data (MPEG moving image data or MPEG still image data) corresponding to the selected thumbnail image is converted. The data is read from the moving image / still image MPEG data recording area of the DVD-RAM 11. The read MPEG data is subjected to decompression processing by the digital video decompression unit 2, and further subjected to processing such as digital-analog conversion by the video signal processing unit 3, and then supplied to the display unit 4. As a result, the display unit 4 displays a moving image or a still image corresponding to the selected thumbnail image.
[0030]
Although not shown, the button input unit 5 is provided with a record button and a play button. By operating the record button, it is possible to instruct the start and end of recording of the moving image data on the DVD-RAM 11. By operating the playback button, the playback of the moving image or the still image on the display unit 4 can be stopped.
[0031]
Next, an outline of an operation when copying JPEG compressed data from the DVD-RAM 11 to the memory card 18 will be described.
[0032]
In this case as well, first, the thumbnail selection screen 21 shown in FIG. 4A (the same as the thumbnail selection screen 21 shown in FIG. 3A) is displayed on the display unit 4 in the same manner as in the above-described reproduction. In the thumbnail list 22 on the thumbnail selection screen 21, the thumbnail moving images 23 and the thumbnail still images 24 are displayed in a mixed manner (that is, arranged in the order according to the recording order data in the management data shown in FIG. 2). ing.
[0033]
When the menu button 31 shown in FIG. 4D in the button input section 5 (FIG. 1) is operated in the display state of the thumbnail selection screen 21, the display section 4 is controlled by the operation control section 6 (FIG. 1). A menu selection screen 32 including a plurality of menu items 33 is displayed. Here, it is assumed that three menu items 33 of “copy still image”, “delete”, and “divide” are displayed. In addition, a cursor 33 for selecting a menu item is superimposed on any one of the menu items 33, and the menu item 33 on which the cursor 33 overlaps is in a selected state (here, as a default, the first item is the first item). It is assumed that the third menu item “copy still image” is selected by the cursor 33). The cursor 33 is, like the cursor 25 in FIG. 3, a cursor up button 26, a cursor down button 27, a cursor left button 28, a cursor right button 28 in the button input unit 5 (FIG. 1) shown in FIG. By operating the move button 29, it is possible to move to another thumbnail image and select it.
[0034]
When the menu item “copy still image” 33 is selected with the cursor 33 on the menu selection screen 32 and the decision button 30 of the button input unit 5 shown in FIG. The unit 6 instructs the still image thumbnail selection control unit 8 to generate still image thumbnail list data. Therefore, the still image thumbnail selection control unit 8 requests the reproduction processing unit 1 to detect only the thumbnail data corresponding to the still image data.
[0035]
Therefore, the reproduction processing unit 1 reads the management data from the management data recording area of the DVD-RAM 11 and, based on the type data (FIG. 2) in the read management data, reads the thumbnail data from the thumbnail data recording area of the DVD-RAM 11. Only the image data is read and supplied to the thumbnail list generation unit 7 and a response is returned to the still image thumbnail selection unit 8. The thumbnail list generation unit 7 generates still image thumbnail list data representing a list of thumbnail still images based on the thumbnail still image data supplied from the reproduction processing unit 1. Cursor data is also added to the still image thumbnail list data. The still image thumbnail list data is supplied to the display unit 4 after being subjected to processing such as digital-analog conversion in the video signal processing unit 3. In this manner, the display unit 4 displays the still image thumbnail selection screen 34 representing the thumbnail still image list 35 in which only the thumbnail still images 24 are arranged, as shown in FIG. 4C.
[0036]
Also in the thumbnail list 35, the cursor 25 for selecting a thumbnail still image is displayed overlapping with any of the thumbnail still images 24 by the cursor data. When each of the move buttons 26 to 29 shown in FIG. 4D is operated, a request to change the display position of the cursor 25 according to the operation is sent from the operation processing unit 6 to the thumbnail list generation unit 7. In response to the request, the thumbnail list generation unit 7 performs a display position changing process of the cursor 25, and after this process, returns a response to the operation processing unit 6. As a result, in the still image thumbnail selection screen 34 shown in FIG. 4C, the cursor 25 moves to the display position corresponding to the operation of the move buttons 26 to 29, whereby the desired thumbnail still image 24 is selected. can do. When a response is returned from the thumbnail list generation unit 7, the control processing unit 6 recognizes the thumbnail still image selected by the cursor 25 based on the recording order data in the previously acquired management data.
[0037]
When the desired thumbnail still image 24 is selected by the cursor 25 and the enter button 30 (FIG. 4D) is operated, the operation control unit 6 in FIG. The recording order data and the still image copy processing request recognized in step S1 are sent to the copy work processing unit 19. Upon receiving the still image copy request, the copy work processing unit 19 reads management data from the management data recording area of the DVD-RAM 11 and, based on the management data and the recording order data, stores the JPEG data recording area of the DVD-RAM 11. And reads the corresponding JPEG compressed data from the controller and supplies it to the JPEG recording processor 20. The JPEG recording processing unit 20 records the supplied JPEG compressed data in the JPEG data recording area of the memory card 18 and creates management data indicating the recording position of the JPEG compressed data in the JPEG data recording area. This is recorded in the management data recording area of the memory card 18. Thus, copying and recording of JPEG data from the DVD-RAM 11 to the memory card 18 are performed.
[0038]
Here, the procedure of the above-described operation from the display of the menu selection screen 32 shown in FIG. 4B to the copying of the JPEG data recorded on the DVD-RAM 11 to the memory card 18 and the accompanying processing will be described. I do. FIG. 5 is a flowchart showing a specific example of the operation procedure and the flow of the processing.
[0039]
In the same figure, when the button input unit 5 (FIG. 1) is operated (step S1) while the menu selection screen 32 shown in FIG. 4B is displayed, this operation is performed with the menu item "still image copy". It is determined whether or not "33" is the selected operation (step S2). This is determined by whether or not the cursor 33 has been moved to this menu item “copy still image” 33. If the menu item “copy still image” 33 is not selected, the process proceeds to another function selection screen (step S3).
[0040]
When the menu item “copy still image” is selected, only the thumbnail still image data is read from the thumbnail data recording area based on the management data of the DVD-RAM 11, and a list of these data is created. The still image thumbnail selection screen 34 shown in (c) is displayed (step S4). Then, it waits for the next button operation on the button input unit 5 (steps S5, S11, S13). If the button operation is performed and this is the operation of the determination button 30 (FIG. 4D) (step S6), JPEG compressed data related to the thumbnail still image selected on the still image thumbnail selection screen 34 is extracted from the JPEG data recording area of the DVD-RAM 11 and read out based on the management data of the DVD-RAM 11 (step S7). The format of the read JPEG compressed data is converted into the recording format of the memory card 18 (step S8) and recorded in the JPEG data recording area of the memory card 18 (step S9). Then, the next button operation of the button input unit 5 is awaited (step S5).
[0041]
Further, when the cursor movement buttons 26 to 29 (FIG. 4D) are operated in the display state of the still image thumbnail selection screen 34 shown in FIG. 4C (steps S6 and S11), the cursor 25 is moved to the operation. By moving by the corresponding direction and amount, another thumbnail still image 24 is selected (step S12), and the next button operation of the button input unit 5 is waited (steps S5, S11, S13). Therefore, each time the cursor movement buttons 26 to 29 are operated, a series of processes of steps S5, S6, S11, and S12 are repeated each time, and the cursor 25 is moved to the next thumbnail still image 24 on the still image thumbnail selection screen 34. It moves sequentially to.
[0042]
Further, when the menu button 31 (FIG. 4D) is operated in the display state of the still image thumbnail selection screen 34 shown in FIG. 4C (step S13), the menu selection screen 32 shown in FIG. (Step S14), and waits until one of the menu items 33 is selected by a button operation of the button input unit 5 (step S15). When the menu item “end” (not shown) on the menu selection screen 32 is selected and determined (step S16), the display returns to the thumbnail selection screen 21 shown in FIG. 4A (step S17). Is selected (step S16), the process returns to step S2.
[0043]
Here, the memory card 18 is detachable in the digital video recording / reproducing apparatus of this embodiment. The memory card 18 in which JPEG compressed data is copied from the DVD-RAM 11 is mounted on another device such as a personal computer. The compressed data can be reproduced.
[0044]
As described above, one embodiment of the present invention has been described, but the present invention is not limited only to such an embodiment.
[0045]
That is, a JPEG playback processing section of the memory card 18 is provided, JPEG compressed data can be read from the memory card 18, and the read JPEG compressed data is restored to the original still image data. The information may be supplied to the unit 14, the thumbnail generation unit 15, and the JPEG generation unit 16 so as to be recorded on the DVD-RAM 11. In this case, the thumbnail still image data of the JPEG compressed data recorded in the JPEG data recording area is also recorded on the memory card 18 so that the thumbnail list is created directly from the thumbnail still image data of the memory card 18 and displayed on the display unit. 4, and the JPEG compressed data of the thumbnail still image selected from the thumbnail list may be read and displayed on the display unit 14.
[0046]
Further, in the above embodiment, after a desired thumbnail still image 24 is selected on the still image thumbnail selection screen 34 shown in FIG. 4C, by pressing the enter button 31, this is copied to the memory card 18. Although this operation is performed by the button input unit 5 for each still image data to be copied, for example, by operating the determination button 31 once, the selection of the thumbnail still image 24 is determined. A copy command is not issued, and a copy command is issued by operating the enter button 31 twice in succession, so that a plurality of thumbnail still images 24 are selected before copying is started. It may be.
[0047]
Further, in the above-described embodiment, after the thumbnail selection screen (FIG. 4A) in which the thumbnail images of the moving image and the still image are mixed is displayed, the menu button 30 is operated to display the menu selection screen 32. By operating the cursor movement buttons 26 to 29 and the determination button 30, the still image thumbnail selection screen 34 for copying to the memory card 18 or the like is displayed. By providing a thumbnail call button or the like, and operating the call button, the still image thumbnail selection screen 34 is immediately displayed even when the thumbnail selection screen 21 is displayed or before the thumbnail selection screen 21 is displayed. May be performed.
[0048]
Further, in the above embodiment, the still image is copied to the memory card 18. However, the present invention is a digital video playback device that has a thumbnail list display function but does not have a recording function. A list of only thumbnail still images may be displayed.
[0049]
Further, in the above-described embodiment, the memory card 18 is used only for copying the JPEG compressed data whitened on the DVD-RAM. However, the JPEG compressed data of the still image generated by the JPEG generating unit 16 can be directly recorded. It may be.
[0050]
Further, in the above embodiment, a DVD-RAM and a memory card are used as recording media, but other optical disks and recording media on cards may be used.
[0051]
In the above embodiment, two recording media, a DVD-RAM and a memory card, are provided. However, for example, two or more DVD-RAMs are provided to further increase the recording capacity of video data. Alternatively, two or more memory cards may be mounted. When two or more DVD-RAMs are provided, the entire DVD-RAM can be handled as one large-capacity recording medium as described above. Even when two or more memory cards can be mounted, more Can be copied.
[0052]
【The invention's effect】
As described above, according to the present invention, when only a still image is copied from a recording medium on which a moving image and a still image are recorded in a mixed manner to another recording medium, only the thumbnail image corresponding to the still image is copied. It can be displayed in a list, eliminating the need to determine whether the thumbnail image in the list is for a moving image or a still image, making copying easier and greatly improving operability. Increase.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a digital video recording / reproducing apparatus according to the present invention.
FIG. 2 is a diagram schematically showing a specific example of management data recorded on a DVD-RAM in FIG.
FIG. 3 is a diagram showing a specific example of a thumbnail selection screen for selecting an MPEG image to be reproduced when reproducing an MPEG image recorded on a DVD-RAM in FIG. 1;
4 is a diagram showing a specific example of a display screen for an operation performed to copy JPEG compressed data of a still image recorded on a DVD-RAM in FIG. 1 to a memory card.
5 is a flowchart showing a specific example of an operation procedure and a processing flow performed to copy JPEG compressed data of a still image recorded on a DVD-RAM in FIG. 1 to a memory card.
[Explanation of symbols]
1 Reproduction processing unit
2 Digital video decompression unit
3 Video signal processing unit
4 Display
5 Button input section
6 Operation control unit
7 Thumbnail list generator
8 Still image thumbnail selection control unit
11 DVD-RAM
12 Video signal input section
13 Digital video signal processing unit
14 MPEG video compression unit
15 Thumbnail generator
16 JPEG generator
17 Record processing unit
18 Memory card
19 Copy work processing section
20 JPEG recording processor
21 Thumbnail selection screen
22 Thumbnail list
23 thumbnail video
24 Thumbnail still images
25 cursor
26-29 Cursor move button
30 OK button
31 Menu button
32 Menu selection screen
33 menu items
34 Still image thumbnail selection screen
35 Thumbnail still image list

Claims (5)

A first recording medium storing video data of moving images and still images, thumbnail data respectively corresponding to the moving images and still images, and management data for associating the video data with the thumbnail data is mounted, and the management data is A reproduction processing unit for reproducing the video data and the thumbnail data from the first recording medium based on the first recording medium, a display unit that displays a moving image or a still image by the video data reproduced by the reproduction processing unit, A digital video playback device comprising: a thumbnail list generation unit that generates a thumbnail list image representing a list of thumbnail data reproduced by the reproduction processing unit and causes the thumbnail list image to be displayed on the display unit;
A still image thumbnail selection control unit for extracting and controlling thumbnail data corresponding to the still image;
Under the control of the still image thumbnail selection control unit, the reproduction processing unit reads only the thumbnail data corresponding to a still image from the first recording medium based on the management data, and the thumbnail list generation unit A digital video reproducing apparatus characterized by generating a still image thumbnail list image including only the thumbnail data corresponding to a still image read by a reproduction processing unit and displaying the thumbnail image on a display unit. The digital video playback device according to claim 1,
A second recording medium capable of recording still image data and management data is detachably mounted,
A processing unit for recording still image video data and its management data on the second recording medium;
Instructs copying of still image data on the first recording medium corresponding to the thumbnail data of the still image selected in the still image thumbnail list image displayed on the display unit to the second recording medium. Operation control unit,
The processing unit reads the still image data instructed to be copied from the first recording medium based on the management data recorded on the first recording medium according to the instruction of the device control unit. And a digital video reproducing apparatus for recording on the second recording medium. The digital video playback device according to claim 2,
The recording capacity of the first recording medium is larger than the recording capacity of the second recording medium. 4. The digital video playback device according to claim 2, wherein the video data of the moving image recorded on the first recording medium is MPEG moving image data compressed according to an MPEG standard, and Are still image data compressed according to the MPEG standard and JPEG compressed data compressed according to the JPEG standard.
A digital video reproducing apparatus characterized in that the JPEG compressed data is copied to the second recording medium. A digital video playback device according to any one of claims 1 to 4,
An MPEG compression unit that compresses an input video signal according to the MPEG standard and generates MPEG data;
A thumbnail generation unit that generates thumbnail image data from the input video signal;
When the input video signal is video data of a still image, a JPEG compression unit that compresses the input video signal in accordance with the JPEG standard to generate JPEG compressed data;
When the input video signal is video data of a video, the MPEG video data from the MPEG compression section and the thumbnail video data from the thumbnail generation section are recorded on the first recording medium together with the management data. When the input video signal is video data of a still image, the MPEG still image data from the MPEG compression unit, the thumbnail still image data from the thumbnail generation unit, and the JPEG compressed data from the JPEG compression unit are A digital video recording / reproducing apparatus, which records the digital video recording / reproducing data on the first recording medium together with the management data.

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