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Recording medium storing management information for content attribute and recording device and reproduction device for the recording medium

A technology for managing information and recording media, applied in digital recording/reproduction, information storage, data recording, etc., which can solve problems such as heavy load, huge cost increase, and inability to cope, and achieve the effect of simple structure and easy retrieval

Inactive Publication Date: 2008-08-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the device reads all the management information files and keeps them internally, when searching for the user's desired content, the overhead increases dramatically as the number of contents increases, so there is a practical problem
[0012] In particular, in the specification of data recording to a semiconductor recording medium, when the maximum number of management contents in the specification management is very large, the management corresponding to all the contents is read in a device with low hardware performance such as a dedicated player for playback. information files, and keeping that information internal, the load becomes too large to handle

Method used

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  • Recording medium storing management information for content attribute and recording device and reproduction device for the recording medium
  • Recording medium storing management information for content attribute and recording device and reproduction device for the recording medium
  • Recording medium storing management information for content attribute and recording device and reproduction device for the recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0096] 1. Semiconductor recording media

[0097] FIG. 1 is a diagram showing an example of the structure of a semiconductor recording medium in the present invention. The semiconductor recording medium 100 includes a host interface unit 110 , a control unit 120 , and a recording area 130 .

[0098] The host interface unit 110 has a function of delivering information with a host device (playback device, recording device, etc.) that accesses the semiconductor recording medium 100 .

[0099] The control unit 120 has a function of controlling the semiconductor recording medium 100 . Interprets read and write commands received from the host device, and accesses the recording area 130 . The result is notified to the host device via the host interface unit 110 as necessary.

[0100] The recording area 130 has a function of storing digital data, and is physically constituted by a nonvolatile memory such as a flash memory. The recording area 130 has a special area 131 , a protecte...

Embodiment approach 2

[0265] Next, a second embodiment of the present invention will be described. This embodiment differs from Embodiment 1 in the method of storing information of pointers to management information in each attribute management file in the wizard file group. The other compositions are basically the same in action. In addition, it is assumed that the configurations of the recording device and the playback device of the present embodiment are the same as those of the first embodiment.

[0266] FIG. 28 is a diagram showing the relationship between a guide file group and content files including audio objects in this embodiment. The guide file group includes a genre management file 201b, a composer management file 211b, an artist management file 203b, an album management file 205b, a title management file 207, and a ranking information management file 209.

[0267] Each attribute management file of the genre management file 201b, composer management file 211b, artist management file 2...

Embodiment approach 3

[0290] Next, a third embodiment of the present invention will be described. This embodiment differs from Embodiments 1 and 2 in that each attribute in the guide file group manages the storage method of the management information in the file. The other compositions are basically the same in action. In addition, it is assumed that the configurations of the recording device and the playback device of the present embodiment are the same as those of the first embodiment.

[0291] FIG. 32 is a diagram showing the relationship between the guide file group and content files including audio objects in this embodiment. The guide file group includes a genre management file 201c, a composer management file 211c, an artist management file 203c, an album management file 205c, a title management file 207, and a ranking information management file 209.

[0292] Each of the attribute management files of the genre management file 201c, composer management file 211c, artist management file 203...

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Abstract

A semiconductor recording medium stores attribute management information (201, 203, ...) for managing various attribute information on a content (genre, composer, artist, album, title, etc.) for each item; and sort management information (209) managing information on a sort order when information managed by the attribute management information is sorted by a predetermined procedure. The attribute management information contains character data indicating items to be managed and pointer information indicating link relationship between the attribute management information. The sort management information (209) contains information on the sort order when all the entries in each attribute management information are sorted by a predetermined procedure for each attribute management information.

Description

technical field [0001] The present invention relates to a recording medium for recording the content of digital data, and more particularly to a recording medium for storing management information on content attributes. In addition, the present invention also relates to an apparatus for reproducing content from such a recording medium, and an apparatus for recording content on such a recording medium. Background technique [0002] As recording media for recording various digital data such as music content, video content, and still image content (hereinafter referred to as "content"), there are various media such as semiconductor recording media, magnetic disks, optical disks, and magneto-optical disks. [0003] Among them, in addition to the advantages of small size and light weight, semiconductor recording media have rapidly developed high capacity, high speed, and low price in recent years. They can be used in digital cameras, mobile phones, portable music players, televis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B27/00G11B20/12G11B20/10G06F21/10G06F21/78
CPCG06F17/30749G11B2220/61G06F21/78G06F21/10G06F17/30778G11B27/322G06F17/30775G11B27/105G11B27/034G06F16/68G06F16/64G06F16/61
Inventor 越智诚藤村一哉井上信治中岛康志铃木达也
Owner PANASONIC CORP
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