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1. WO1999008273 - SIGNAL RECORDING AND REPRODUCING DEVICE AND METHOD FOR MANAGING DEFECT OF SIGNAL RECORDING AREA

Publication Number WO/1999/008273
Publication Date 18.02.1999
International Application No. PCT/JP1998/003607
International Filing Date 12.08.1998
IPC
G11B 20/10 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
G11B 20/18 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
18Error detection or correction; Testing
CPC
G11B 20/10527
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
10527Audio or video recording; Data buffering arrangements
G11B 20/1883
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
18Error detection or correction; Testing ; , e.g. of drop-outs
1883Methods for assignment of alternate areas for defective areas
G11B 2220/20
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220Record carriers by type
20Disc-shaped record carriers
G11B 2220/216
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220Record carriers by type
20Disc-shaped record carriers
21characterised in that the disc is of read-only, rewritable, or recordable type
215Recordable discs
216Rewritable discs
G11B 2220/23
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220Record carriers by type
20Disc-shaped record carriers
23characterised in that the disc has a specific layer structure
Applicants
  • SONY CORPORATION [JP]/[JP] (CN, JP, KR)
  • SHIRANE, Kyoichi [JP]/[JP] (UsOnly)
Inventors
  • SHIRANE, Kyoichi
Agents
  • KOIKE, Akira
Priority Data
9/21777612.08.1997JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SIGNAL RECORDING AND REPRODUCING DEVICE AND METHOD FOR MANAGING DEFECT OF SIGNAL RECORDING AREA
(FR) DISPOSITIF D'ENREGISTREMENT ET DE REPRODUCTION DE SIGNAUX ET PROCEDE DE GESTION D'UNE DEFAILLANCE SE PRODUISANT DANS LA ZONE D'ENREGISTREMENT DE SIGNAUX
Abstract
(EN) A signal recording and reproducing device which reproduces information signals recorded in the signal recording area of a magnetic disk (100) by means of a magnetic head (3) sector by sector and fetches the reproduced signals through an equalizer (8), an ECC circuit (9), and a buffer (10). A control circuit (12) acquires evaluation values indicating the difficulty of operation of reproducing information signals from the disk (100), sums up the evaluation values acquired until proper reproduction becomes possible, and, when the cumulative evaluation value exceeds a prescribed value, controls the information signals recorded in the corresponding sector to be recorded in another sector, thus preventing the recorded information signals from becoming unreproducible in the future.
(FR) L'invention concerne un dispositif d'enregistrement et de reproduction de signaux qui reproduit des signaux d'informations enregistrés dans la zone d'enregistrement de signaux d'un disque magnétique (100), au moyen d'une tête magnétique (3), secteur par secteur, et extrait les signaux reproduits par l'intermédiaire d'un égaliseur (8), d'un circuit à code correcteur d'erreurs (9) et d'un tampon (10). Un circuit de commande (12) acquiert des values d'évaluation indiquant la difficulté présentée par l'opération consistant à reproduire les signaux d'informations à partir du disque (100), fait la somme des valeurs d'évaluation acquises jusqu'à ce qu'une reproduction correcte soit possible, et, lorsque la valeur d'évaluation cumulative dépasse une valeur prescrite, lance une instruction pour que les signaux d'informations enregistrés dans le secteur correspondant soient enregistrés dans un autre secteur, ce qui empêche les signaux d'informations enregistrés de devenir non reproductible dans le futur.
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