Supercharge Your Innovation With Domain-Expert AI Agents!

Recording medium, recording method and recording apparatus

A recording medium and recording device technology, applied in optical recording/reproducing/erasing methods, optical record carriers, disc-shaped record carriers, etc., can solve problems affecting reading speed and reliability, and achieve the effect of shortening time

Inactive Publication Date: 2005-02-09
HITACHI LTD +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the structure of the management information to manage the area affects the reading speed and reliability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Recording medium, recording method and recording apparatus
  • Recording medium, recording method and recording apparatus
  • Recording medium, recording method and recording apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Embodiments of the recording method of the present invention will be described below using the drawings.

[0042]FIG. 2 shows the contents of recorded / unrecorded areas and their management information as an embodiment of the present invention. The upper segment in the figure indicates the recording area on the optical disc, and the areas (1), (2), (4), (7), (8), (9), (10), (11), (14) indicated by the upper right oblique line ) and (15) represent recorded areas where data is recorded. Areas (3), (5), (6), (12), (13) and (16) without oblique lines represent unrecorded areas in which data is not recorded.

[0043] Here, if the addresses divided on the disk increase from the left to the right in the figure, when data is written, it is recorded in the right direction as indicated by the horizontal arrow. Here, one recording unit is defined as 64 kB (kilobyte). Assuming that recorded / unrecorded is "1" or "0", the recorded / unrecorded area management map is assigned to the r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an information recording method of recording data in a recording medium. Information in a space bit map format representing recorded and unrecorded areas assigned according to each recording unit of the areas in the recording medium is recorded in the recording medium. When information corresponding to a position of recorded and unrecorded areas is updated, the information in the space bit map format is again recorded in the recording medium at predetermined timing.

Description

technical field [0001] The present invention relates to a method for managing recorded / unrecorded areas when writing data on a recordable optical disc. Background technique [0002] Optical discs are widely used as recording media for recording data. When recording information on the disc, or when the operation is terminated (so that the session time cannot be added at the end of the recording, specify the prohibition of rewriting, and perform the close dialog (fixed)), since it is necessary to judge the recorded / unrecorded area, the management record / Undocumented area information is very important. To this end, JP-A-10-112166 (pages 4-5 [0019] to [0030], FIG. 7) describes a method for generating a recorded / unrecorded block map using a spatial bitmap. [0003] Especially for so-called write-once discs such as CD-R and DVD-R, which can only record once, since they can only be written once, the management of recorded / unrecorded areas is very important. [0004] Generally, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/007G11B7/0045G11B20/12
CPCG11B7/00736G11B2020/1265G11B7/0045G11B20/1217G11B2220/218G11B2020/1285G11B27/329G11B7/007
Inventor 川前治星泽拓
Owner HITACHI LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com