Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1995-06-23
1996-12-17
Edun, Muhammad N.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369 59, 369 58, 369 48, 360 48, 360 53, G11B 700
Patent
active
055861083
ABSTRACT:
Reliability of data is improved by increasing the length of burst error correction of recorded data. Instead of the conventional error correcting codes produced in a sector, error correcting code interleaved among sectors is generated. Otherwise, double codes are formed by decreasing parity number of the conventional error correcting codes produced in the sector and adding error correcting code interleaved among the sectors instead. The length of burst error correction of recorded data is increased by interleaving error correction code among the sectors. Further, the efficiency of use of disk can be improved since parity sector is not used and, in addition to this, the speed of processing can be improved since there is no need to read out unnecessary sectors during correction.
REFERENCES:
patent: 5363362 (1994-11-01), Maeda et al.
Standard ECMA-154 Data Interchange on 90 mm Optical Disk Cartridges, Read Only and Rewritable, M.O., ECMA (European Computer Manufacturers Association), Jun. 1991, pp. 34-50, 61-63 and 75-78 (Provided in English).
Edun Muhammad N.
Hitachi , Ltd.
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