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1. WO1996039697 - ERROR CORRECTION VIA PROGRAMMABLE BIAS CURRENT FOR MR RECORDING HEADS

Publication Number WO/1996/039697
Publication Date 12.12.1996
International Application No. PCT/US1996/008898
International Filing Date 05.06.1996
Chapter 2 Demand Filed 02.01.1997
IPC
G11B 5/00 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B 5/012 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
012Recording on, or reproducing or erasing from, magnetic disks
G11B 5/455 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
455Arrangements for functional testing of heads; Measuring arrangements for heads
G11B 19/00 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
G11B 19/04 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
02Control of operating function, e.g. switching from recording to reproducing
04Arrangements for preventing, inhibiting, or warning against, double recording on the same blank, or against other recording or reproducing malfunctions
G11B 20/18 2006.01
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 19/00
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
G11B 19/04
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
19Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
02Control of operating function, e.g. switching from recording to reproducing
04Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
G11B 20/18
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
G11B 20/1816
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
1816Testing
G11B 2005/0018
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
0002Special dispositions or recording techniques
0005Arrangements, methods or circuits
001Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
0013of transducers, e.g. linearisation, equalisation
0016of magnetoresistive transducers
0018by current biasing control or regulation
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
Applicants
  • MAXTOR CORPORATION [US]/[US]
Inventors
  • MC NEIL, Michael
Agents
  • KULISH, Christopher, J.
Priority Data
473,28306.06.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ERROR CORRECTION VIA PROGRAMMABLE BIAS CURRENT FOR MR RECORDING HEADS
(FR) CORRECTION D'ERREURS PAR COURANT PROGRAMMABLE DE POLARISATION POUR TETES D'ENREGISTREMENT MAGNETO-RESISTIVES
Abstract
(EN)
A data error correction procedure is disclosed for use in a disk drive that includes a magneto-resistive head. The error correction procedure increases the DC bias current applied to the read stripe of the magneto-resistive head. The increased value is predetermined for a disk drive having a particular magneto-resistive head. If conventional error correction procedures are not successful, the increased DC bias current is applied to the read stripe to reduce the bit error rate that has occurred during a read operation conducted by the disk drive.
(FR)
L'invention concerne un procédé de correction d'erreurs de données qui est mis en ÷uvre dans une unité de disque pourvue d'une tête magnéto-résistive. Le procédé de correction d'erreurs augmente le courant continu de polarisation appliqué à la bande de lecture de la tête magnéto-résistive. Cette valeur accrue est prédéterminée pour une unité de disque pourvue d'une tête magnéto-résistive déterminée. Si les procédés classiques de correction d'erreurs échouent, le courant continu accru de polarisation est appliqué à la bande de lecture afin de réduire le taux d'erreurs binaires produites pendant une opération de lecture effectuée par l'unité de disque.
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