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Defect management for real-time information

A real-time information and defect management technology, applied in the field of information storage, can solve problems such as performance degradation

Inactive Publication Date: 2011-12-14
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, known defect management methods will degrade performance due to the need for alternate records at alternate physical addresses

Method used

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  • Defect management for real-time information
  • Defect management for real-time information
  • Defect management for real-time information

Examples

Experimental program
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Embodiment Construction

[0029] Figure 1a A disc-shaped record carrier 11 having a track 9 and a central hole 10 is shown. A track 9 is the location of a series of (to-be) recorded marks representing information, the track 9 being arranged according to a spiral pattern of tums, wherein the tums constitute substantially parallel tracks on the information layer. The record carrier may be optically readable, called an optical disc, and have an information layer of a recordable type. Examples of recordable discs are CD-RW, and rewritable types of DVD, such as DVD+RW, and high-density rewritable discs using blue lasers, called Blu-ray Discs (BD). More details on DVD discs can be found in the following reference: ECMA-267: 120mm DVD-Read-Only Disc-(1997). Information is represented on the information layer by recording optically detectable marks along the track, for example crystalline or amorphous marks in a phase change material. The track 9 on a recordable type of record carrier is indicated by provid...

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PUM

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Abstract

A device for recording records blocks of information on logical addresses on a record carrier at corresponding physical addresses. The logical addresses are translated into the physical addresses in dependence on defect management information that includes defect information on a defective status of physical addresses and remapping information on translating a logical address initially mapped to an initial physical address to an alternate physical address. The device has a real-time storage unit for writing real-time information blocks (77) to respective initial physical addresses irrespective of the defective status. When recording at a defective status location (76), the real-time information block is temporarily stored in a memory (80). In a separate period, when the writing of real-time information blocks is suspended, said temporarily stored real-time information blocks are additionally written to alternate physical addresses (81). The defect management information (73) is updated to indicate that the real-time information block is present at both locations.

Description

technical field [0001] The invention relates to a device for recording information on a record carrier in blocks with logical addresses, said device comprising recording means for recording marks representing the information in tracks on the record carrier. [0002] The invention also relates to a device for reading information on a record carrier in blocks with logical addresses, said device comprising reading means for reading marks representing the information in tracks on the record carrier. [0003] The invention also relates to a method for real-time information defect management used in recording information. [0004] The invention also relates to a computer program product for real-time information defect management for use in recording information. [0005] The invention relates to the field of information storage, and further to defect management of real-time information. Background technique [0006] An apparatus and method for recording information on a record ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/18G11B20/12
CPCG11B2020/1062G11B2020/1893G11B20/1251G11B2020/10944G11B20/1883G11B2220/20
Inventor P·伊特斯马J·F·R·布莱奎尔D·哈默林克
Owner KONINK PHILIPS ELECTRONICS NV