CA2143081A1 - Method of Optimizing Read Channel of Disk Driving Recording Apparatus by Using Error Rate - Google Patents

Method of Optimizing Read Channel of Disk Driving Recording Apparatus by Using Error Rate

Info

Publication number
CA2143081A1
CA2143081A1 CA2143081A CA2143081A CA2143081A1 CA 2143081 A1 CA2143081 A1 CA 2143081A1 CA 2143081 A CA2143081 A CA 2143081A CA 2143081 A CA2143081 A CA 2143081A CA 2143081 A1 CA2143081 A1 CA 2143081A1
Authority
CA
Canada
Prior art keywords
error rate
data detection
recording apparatus
detection error
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2143081A
Other languages
French (fr)
Other versions
CA2143081C (en
Inventor
Heung-Min Oh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CA2143081A1 publication Critical patent/CA2143081A1/en
Application granted granted Critical
Publication of CA2143081C publication Critical patent/CA2143081C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing

Abstract

The present invention relates to a disk drive recording apparatus and more particularly to a method for optimizing performance of a read channel in a disk drive recording apparatus by using an error rate. The method for optimizing performance of a read channel in a disk driving recording apparatus having a programmable low-pass filter and a control device for controlling apparatus operation includes the steps of initially assigning a filtering characteristic to the programmable low-pass filter as a predetermined initial bandwidth value via the control device; detecting and evaluating data written on a first predetermined track of a disk to calculate a first data detection error rate by the control device; comparing a reference error rate with the first data detection error rate; setting the filtering characteristic of the low-pass filter to a bandwidth indicating a lowest error rate by varying the bandwidth of the programmable low-pass filter when the first data detection error rate is greater than a reference error rate; thereafter, detecting data written on a second predetermined track of the disk to calculate a second data detection error rate by the control device; comparing the reference error rate with the second data detection error rate; outputting an error state signal indicating that the disk drive recording apparatus is in a poor state when the second data detection error rate is greater than the reference error rate; and setting a currently set bandwidth as a final set value and completing an optimization process when any one of the first and second data detection error rates is below the reference error rate.
CA002143081A 1994-04-27 1995-02-21 Method of optimizing read channel of disk driving recording apparatus by using error rate Expired - Fee Related CA2143081C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR9013/1994 1994-04-27
KR1019940009013A KR970010637B1 (en) 1994-04-27 1994-04-27 Lead channel optimization method using error rate in disk driver

Publications (2)

Publication Number Publication Date
CA2143081A1 true CA2143081A1 (en) 1995-10-28
CA2143081C CA2143081C (en) 1998-06-23

Family

ID=19381882

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002143081A Expired - Fee Related CA2143081C (en) 1994-04-27 1995-02-21 Method of optimizing read channel of disk driving recording apparatus by using error rate

Country Status (5)

Country Link
US (1) US5610776A (en)
JP (1) JP2868707B2 (en)
KR (1) KR970010637B1 (en)
CA (1) CA2143081C (en)
DE (1) DE19511587B4 (en)

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US6151180A (en) * 1998-04-15 2000-11-21 Samsung Electronics Co., Ltd. Method and apparatus for detecting defects on a disk in a hard disk drive
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KR100468778B1 (en) * 2002-12-13 2005-01-29 삼성전자주식회사 Method for optimizing a write current and a method for setting a recording densicity of hard disc drive
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KR100546314B1 (en) * 2003-02-08 2006-01-26 삼성전자주식회사 Storage apparatus and read error recovery method in storage apparatus
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Also Published As

Publication number Publication date
DE19511587B4 (en) 2006-04-20
JP2868707B2 (en) 1999-03-10
CA2143081C (en) 1998-06-23
DE19511587A1 (en) 1995-11-02
KR950030118A (en) 1995-11-24
KR970010637B1 (en) 1997-06-28
JPH07296529A (en) 1995-11-10
US5610776A (en) 1997-03-11

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