DISK CONTROLLER AND ALTERNATION PROCESSING METHOD

PROBLEM TO BE SOLVED: To provide a means which reduces the amount of memory for temporary saving since it is necessary to store the data on the area becoming a subject of movement in the memory when slip processing from a data area to an alternation area although data areas and alternation areas are...

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Bibliographic Details
Main Authors HIRATSUKA YUKIE, OGAWA HITOSHI, DOMYO SEIICHI
Format Patent
LanguageEnglish
Published 02.07.2004
Edition7
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a means which reduces the amount of memory for temporary saving since it is necessary to store the data on the area becoming a subject of movement in the memory when slip processing from a data area to an alternation area although data areas and alternation areas are arranged alternatively on a disk in an audio and video disk device. SOLUTION: In this disk device, when a defective sector is detected in the first half of a readout range, blocks from the leading sector of readout data to the defective sector are moved to an alternation area ahead of a data area via the memory for temporary saving. In this case, the amount of the memory for temporary saving can be reduced as compared with the conventional system which uses only a back alternation area by using a control method which changes a direction to which blocks are to be slipped in response to the occurrence position of the failure sector. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20020350628