Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Recording method and reproduction method suitable for recording/reproduction of AV data, and recording drive and reproduction drive, information recording system and information reproduction system, and information recording medium for such methods

a recording method and av data technology, applied in the field of recording/reproducing information on an information recording medium, can solve the problems of significant delay in the recording or reproduction process, inability to properly record, and inability to smooth and smooth the effect of recording, and achieve the effect of minimizing any delay caused by a defective region

Inactive Publication Date: 2005-04-14
PANASONIC CORP
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides an information recording medium and method for recording and reproducing data on a sector-by-sector basis. The file structure includes unused space management information that identifies defective regions on the medium. The defective region can be a physical address or a sector that cannot properly read or record data. The medium can also include ECC blocks for performing error correction. The method includes a recording region allocation step, a skip recording step, and a file management information generation step. The invention allows for efficient allocation of recording regions and effective management of defective regions, improving the reliability and accuracy of data recording."

Problems solved by technology

If the sector address which has been read includes an error, the recording cannot occur properly because of inability to identify the right location.
Thus, a significant delay occurs during a recording or reproduction process if any defective regions (e.g., 2623 or 2625) exist in the user area 2621.
However, such delay may well be critically problematic in real-time recording and / or smooth reproduction of data containing digital video and audio data (hereinafter referred to as “AV data”).
For example, problems such as partial loss of AV data, noise generation, inability to perform smooth reproduction, may occur.

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 method and reproduction method suitable for recording/reproduction of AV data, and recording drive and reproduction drive, information recording system and information reproduction system, and information recording medium for such methods
  • Recording method and reproduction method suitable for recording/reproduction of AV data, and recording drive and reproduction drive, information recording system and information reproduction system, and information recording medium for such methods
  • Recording method and reproduction method suitable for recording/reproduction of AV data, and recording drive and reproduction drive, information recording system and information reproduction system, and information recording medium for such methods

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0112] Hereinafter, the present invention will be described by way of example, with reference to the accompanying figures.

[0113]FIG. 1 shows a data structure 100 of a disk medium according to Example 1 of the present invention. In the data structure 100 shown in FIG. 1, a ROOT directory includes a DIR1 directory, where the DIR1 directory includes two files, namely, an “AV_FILE” file 108 for storing AV data and a “PC_FILE” file 110 for storing computer data. The description of the elements which have already been described with reference to FIG. 26 in connection with the conventional technique is omitted. Only the elements which form the features of the invention will be described.

[0114] In a logical space 102 shown in FIG. 1, the “AV_FILE” file 108 includes three extents, namely, an AV_FILE extent 105, an AV_FILE extent 106, and an AV_FILE padding extent 107. The PC_FILE 110 includes a PC_FILE extent 109. The example shown in FIG. 1 illustrates a case where a defective region 112 ...

example 2

[0191] Next, with reference to the figures, an information recording / reproduction system 1500 according to Example 2 of the present invention for recording or reproducing data on the disk medium shown in FIG. 1 will be described, with respect to its structure and operations.

[0192]FIG. 15 is a block diagram illustrating the structure of the information recording / reproduction system 1500 according to Example 2 of the present invention. Hereinafter, the respective elements of the information recording / reproduction system 1500 will be described. The descriptions of those elements which have their counterparts in the information recording / reproduction system 400 shown in FIG. 4 will be omitted.

[0193] As shown in FIG. 15, the information recording / reproduction system 1500 includes an upper control apparatus 1510, a disk recording / reproduction drive 1520, a magnetic disk apparatus 450, an AV data output section 460, an AV data input section 470, and an IO / bus 480.

[0194] The upper contro...

example 3

[0232] Next, with reference to the figures, an information recording / reproduction system 3000 according to Example 3 of the present invention for recording or reproducing data on the disk medium shown in FIG. 1 will be described, with respect to its structure and operations.

[0233]FIG. 20 is a block diagram illustrating the structure of the information recording / reproduction system 3000 according to Example 3 of the present invention. Hereinafter, the respective elements of the information recording / reproduction system 3000 will be described. The descriptions of those elements which have their counterparts in the information recording / reproduction system 400 shown in FIG. 4 will be omitted.

[0234] As shown in FIG. 20, the information recording / reproduction system 3000 includes an upper control apparatus 3010, a disk recording / reproduction drive 3030, a magnetic disk apparatus 450, an AV data output section 460, an AV data input section 470, and an IO / bus 480.

[0235] The upper contro...

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

PropertyMeasurementUnit
file structureaaaaaaaaaa
AVaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

In an information recording medium for recording and reproducing data thereon on a sector-by-sector basis, the recorded data being managed as at least one file by using a file structure, the file structure includes unused space management information for identifying a used region and an unused region. At least one defective region is registered as an unused region in the unused space management information, the at least one defective region being a region on the information recording medium which is incapable of proper reproduction of the recorded data.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for recording / reproducing information on an information recording medium. In particular, the present invention relates to a technique for achieving real-time recording / reproduction of video and / or audio data on an information recording medium including a defective region. [0003] 2. Description of the Related Art [0004] Optical disks are representative of information recording media having a sector structure. The trend for higher density and larger capacity in recent years has underlined the importance of the reliability of such disks. If a disk includes a sector in which information cannot be properly recorded or reproduced, such a sector is typically registered as a “defective sector” by an optical disk apparatus so that the defective sector will not be used thereafter, and another sector is substituted for that defective sector. This ensures reliability of the disk. Such a...

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(United States)
IPC IPC(8): G11B20/18G11B27/034G11B27/10G11B27/32H04N5/781H04N5/85H04N5/913H04N9/804
CPCG11B20/1217H04N2005/91328G11B20/1883G11B27/034G11B27/105G11B27/329G11B2020/10888G11B2020/1222G11B2020/1288G11B2220/20H04N5/781H04N5/85H04N5/913H04N9/8042G11B20/18G11B7/007
Inventor UEDAGOTOH, YOSHIHOFUKUSHIMA, YOSHIHISAITO, MOTOSHISASAKI, SHINJI
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com