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Recording/reproduction device, recording/reproduction method, and recording medium

A playback device and recording medium technology, applied in the direction of digital recording/reproduction, data recording, record carrier type, etc., can solve the problems of data readout speed not keeping up, data display stop, etc.

Inactive Publication Date: 2005-09-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In this case, there is the following problem, that is, when preparing to reproduce the next file from a certain file, a seek operation of the reading device (for example, an optical head in the case of an optical disc, a magnetic head in the case of a hard disk, etc.) It takes time to find the action, the speed of data readout cannot keep up with the requirements of file reproduction, and the data display to the user will stop
[0024] In addition, according to the above-mentioned Patent Document 4, although the disk files can be equally allocated to the entire area of ​​the disk, the two related files (for example, the video data file and its attributes and the related sound data file cannot be allocated without interruption). ) to the area suitable for continuous reproduction

Method used

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  • Recording/reproduction device, recording/reproduction method, and recording medium
  • Recording/reproduction device, recording/reproduction method, and recording medium
  • Recording/reproduction device, recording/reproduction method, and recording medium

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0109] FIG. 1 is a diagram for explaining an appearance of a DVD recording apparatus as an example of a recording / reproducing apparatus of the present invention and an example of an interface with related equipment.

[0110] As shown in FIG. 1, a DVD recording device is used to load a DVD as a disk medium, and to record and reproduce video information and the like.

[0111] The operation of the DVD recorder is generally carried out through a remote controller and a switch on the machine.

[0112] There are two types of video information input to the DVD recorder, an analog signal and a digital signal. The analog signal includes an analog playback signal, and the digital signal includes a digital playback signal.

[0113] Generally, an analog broadcast signal is received and demodulated by a receiver built in a television device, and input to a DVD recorder as an NTSC-based analog video signal.

[0114] In addition, the digital playback signal is demodulated into a digital sig...

Embodiment approach 2

[0290] In Embodiment 1, as shown in FIG. 10 , identification information of the last recorded file is held as recording resume information. However, in the present embodiment, there is a problem that when the media file indicated by the last recorded file identification information is deleted from the disk medium 100 for some reason (for example, file deletion by user instruction), it cannot It is known that the final recording position is the position at which to start blank area retrieval during the next recording process.

[0291] That is to say, in Embodiment 1, since the final recording position is obtained from the final recording file and the file item information of the UDF file system corresponding to the file, if the final recording file is deleted from the file system, the corresponding file item is also deleted , as a result the final record location cannot be known.

[0292] Therefore, in the second embodiment, a description will be given of the structure of the ...

Embodiment approach 3

[0299] In this embodiment, a document classification method different from that in Embodiment 1 will be described using FIGS. 16 to 17 .

[0300] FIG. 16 shows an example of the structure of group management information and its setting values ​​in this embodiment. The group management information shown in FIG. 16 is set to manage group information for media files recorded on the disk medium 100 having the directory and file structure shown in FIG. 7 .

[0301] The difference from FIG. 12 etc. is that the media file groups constituting the group managed by this group management information are not recorded under the same parent directory.

[0302] More specifically, as shown in the value of each file identification information in Figure 16, the media files belonging to the group managed by this group management information are the media files under the " / VIDEO / DIR002" directory and the " / DCIM / 100ABCDE / " directory Media files under .

[0303] In this manner, by using group man...

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Abstract

A recording / playback apparatus of the present invention is a recording / playback apparatus for recording or playing back a video data file to / from a recording medium, comprising: a recording unit operable to record a video data file, an additional data file related to the video data file, and management information which includes recording resume information indicating a last recorded file; and a controlling unit operable to control the recording unit to record the recording resume information indicating the video data file which was most recently recorded as the last recorded file, into the management information when the video data file and the additional data file are recorded by the recording unit.

Description

technical field [0001] The present invention relates to a recording and reproducing device and a recording medium, in particular to a recording and reproducing device and a recording medium capable of determining the next recording position from the last recorded file position. Background technique [0002] In recent years, disk media have been attracting attention as recording media for recording AV data such as digitized video information and still image information. [0003] For example, recording and reproduction of AV data encoded by encoding methods such as MPEG2 and JPEG are performed on DVDs, hard disks, and MDs (minidiscs), which are disk media. [0004] With such a disk medium, recorded moving image information and still image information can be continuously recorded and reproduced in the order in which they were recorded. [0005] In addition, as a superior feature of disk media, there is random access. As a technique utilizing random access, for example, realiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/12G11B27/034G11B27/10G11B27/32
CPCG11B27/329G11B2220/218G11B2220/2562G11B27/105G11B2220/216G11B27/034G11B20/10G11B27/00G11B27/10
Inventor 中村正日野泰守
Owner PANASONIC CORP