Defect management on file level

A method of defect management is for use in recording information on a record carrier. A device for scanning a track on a record carrier reads blocks of information on logical addresses from corresponding physical addresses. The logical addresses are translated into the physical addresses in depende...

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Bibliographic Details
Main Author BLACQUIERE JOHANNIS F. R
Format Patent
LanguageEnglish
Published 30.05.2007
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A method of defect management is for use in recording information on a record carrier. A device for scanning a track on a record carrier reads blocks of information on logical addresses from corresponding physical addresses. The logical addresses are translated into the physical addresses in dependence on defect management information (54, 55) that includes defect information on a defective status of physical addresses and remapping information (56, 57, 58, 59) on translating a logical address initially mapped to an initial physical address to an alternate physical address. The method includes determining and additionally storing file remapping information (60) based on the defect management information and organized corresponding to files (51, 52), and retrieving the file remapping information (60) for retrieving defect management information (61, 62, 63) related to a file to be retrieved. Additionally applying the file remapping information increases the speed of reading of data files, because the necessary replacement blocks are retrieved as a set in advance.
Bibliography:Application Number: CN2005820910