Data recording method, data erasure method, data display method, storage device, storage medium, and program

a data recording and data technology, applied in the field of data recording methods, data erasure methods, data display methods, storage devices, storage media, etc., can solve the problems of user confusion, insufficient recording of tv programs and the like, and difficulty in dealing with large-volume video data

Inactive Publication Date: 2010-07-22
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0030]According to the present invention, information for determining whether or not a file recorded to the disk is an automatically-divided movie file and information regarding for determining whether or not a file is original are used as bases for making decision. Thus, even if an automatically-divided movie file exists, erasure is carried out without causing the user to feel perplexed.
[0031]Furthermore, according to the present invention, information for determining whether or not a file is original is recorded to a disk. Thus, even if an automatically-divided movie file exists, erasure is carried out without causing the user to feel perplexed.

Problems solved by technology

It should be noted that, however, the above-mentioned conventional art could make the user feel puzzled about the management of a reference movie.
The adoption of a file formant for PCs makes it difficult to deal with large-volume video data.
The maximum recording time for recording video data with a bit rate of 10 Mbps is less than 60 minutes, thereby not to be sufficient for recording TV programs and the like.

Method used

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  • Data recording method, data erasure method, data display method, storage device, storage medium, and program
  • Data recording method, data erasure method, data display method, storage device, storage medium, and program
  • Data recording method, data erasure method, data display method, storage device, storage medium, and program

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0137]The following will describe First Embodiment of the present invention with reference to FIGS. 19 through 24. In the present embodiment, the attribute information of the AV Index file is caused to include a flag for identifying an automatically-divided movie file. Based on this, image reproductions and deletion of files are properly carried out, thereby preventing the user from being perplexed.

[0138]

[0139]The formats of the Quicktime movie file and the AV Index file have been described above. The pe-flags field of the attribute information (FIG. 18) of the AV Index file is defined as shown in FIG. 19. Respective fields therein are discussed below. “Attribute of Entry” records the type of a layer to which an entry corresponding to the Property entry belongs. Regarding the layer, no further description is given here.

[0140]“Type of Entry” stores information for telling whether the corresponding entry is a file or a folder. No descriptions are given here to “Usage of Entry” and “St...

second embodiment

[0193]The following will discuss Second Embodiment of the present invention with reference to FIGS. 25-27. In this embodiment, a flag for telling whether or not attribute information of an AV Index file is initially-recorded data is included in the attribute information of the V Index file, in addition to the flag for telling whether or not the attribute information is an automatically-divided movie file. Based on this, image reproductions and deletion of files are properly carried out, thereby preventing the user from being confused. Second Embodiment can resolve the below-mentioned problem, which is raised when a built-in clock of the recording device is not accurate. As First Embodiment and the present embodiment have many features in common, the descriptions are given only to those different from the above.

[0194]

[0195]The formats of a Quicktime movie file and an AV Index file have already been described above. In the present embodiment, a pe-flags field in a Property entry of an...

third embodiment

[0213]The following will describe Third Embodiment of the present invention with reference to FIGS. 28-32. In the present embodiment, a flag for determining whether or not data is presented to the user is included in the attribute information of the AV Index file, in addition to the flag for telling whether or not attribute information is initially-recorded data and the flag for telling whether or not the attribute information is an automatically-divided movie file. Based on this, image reproductions and deletion of files are properly carried out, thereby preventing the user from being confused. As First and Second Embodiments and the present embodiment have many features in common, the descriptions are given only to those different from the above.

[0214]

[0215]The formats of a Quicktime movie file and an AV Index file have already been described above. In the present embodiment, a pe-flags field in a Property entry of an AV Index file is defined as shown in FIG. 28. The pe-flags incl...

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Abstract

The objective of the present invention is to manage reference movies using an index file, without causing the user to be perplexed. The reference movies are generated because of, for instance, the upper limit of the file size. The index file manages sets of information regarding the files being managed. Examples of these sets of information are information for determining whether or not a file is presented to the user, information for determining whether or not a file is original, and information indicating whether or not nondestructive editing has been done. Based on such information, the erasure, displaying a list, and so on are carried out. Thus, it is possible to manage the reference movies using the index file, without causing the user to be perplexed.

Description

TECHNICAL FIELD[0001]The present invention relates to a data recording method, data erasure method, data display method, storage device, storage medium, and program, concerning recording / erasing video or audio data to / from a random-access storage medium such as a hard disk and an optical disk.BACKGROUND ART[0002]Digital video recording / reproducing devices (hereinafter, video disk recorder) adopting disks as media have become popular. A recording format for such devices is often the Quicktime® file format or the AVI (Audio Video Interleave) file format, in consideration of compatibility with PCs (personal computers).[0003]Japanese Laid-Open Patent Application No. 2001-84705 (Tokukai 2001-84705; published on Mar. 30, 2001) discloses a method for managing contents in a disk when the above-mentioned file format for PCs is adopted. Referring to FIG. 33, an outline of this method is given. Files 2101 through 2103 of a disk 2105 correspond to respective scenes or shots being recorded, and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F17/30G11B27/034G11B27/34
CPCG11B27/034G06F16/71G06F16/40G11B27/34G11B20/10G11B27/00H04N5/92
Inventor KIYAMA, JIROIWANO, YURIYAMAGUCHI, TAKAYOSHI
Owner SHARP KK
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