KR970071685A - Servo offset compensation method - Google Patents

Servo offset compensation method Download PDF

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Publication number
KR970071685A
KR970071685A KR1019960012919A KR19960012919A KR970071685A KR 970071685 A KR970071685 A KR 970071685A KR 1019960012919 A KR1019960012919 A KR 1019960012919A KR 19960012919 A KR19960012919 A KR 19960012919A KR 970071685 A KR970071685 A KR 970071685A
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KR
South Korea
Prior art keywords
bias force
servo
offset
servo control
sample
Prior art date
Application number
KR1019960012919A
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Korean (ko)
Other versions
KR100326181B1 (en
Inventor
최수일
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960012919A priority Critical patent/KR100326181B1/en
Publication of KR970071685A publication Critical patent/KR970071685A/en
Application granted granted Critical
Publication of KR100326181B1 publication Critical patent/KR100326181B1/en

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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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. Technical field to which the invention described in the claims belongs

하드 디스크 드라이브의 서보제어에 관련된 하드웨어적 구성요소들이 가지는 오프셋을 보상하는 방법에 관한 것이다.And more particularly, to a method of compensating an offset of hardware components related to servo control of a hard disk drive.

2. 발명이 해결하려고 하는 기술적 과제2. Technical Challenges to be Solved by the Invention

하드 디스크 드라이브의 서보제어에 관련된 하드웨어적 구성요소들이 가지는 오프셋을 보상함으로서 서보제어의 성능을 향상시킬 수 있는 서보 오프셋 보상방법을 제공함에 있다.There is provided a servo offset compensation method capable of improving performance of a servo control by compensating an offset of hardware components related to servo control of a hard disk drive.

3. 발명의 해결방법의 요지3. The point of the solution of the invention

바이어스 포스 테이블을 구비하는 하드 디스크 드라이브의 서보오프셋 보상방법에 있어서, 규정된 샘플트랙들로부터 각각의 바이어스 포스를 측정하는 과정과, 각각의 샘플트랙에서 측정된 바이어스 포스와 표준 바이어스 포스와의 차이를 계산하여 전 샘플트랙의 바이어스 포스 평균치를 산출하는 과정과, 서보제어시마다 산출된 상기 전 샘플트랙의 바이어스 포스 평균치를 제거한 서보제어신호를 출력함으로서 서보 오프셋을 보상하는 과정으로 이루어짐을 특징으로 한다.A servo offset compensating method for a hard disk drive having a bias force table, comprising the steps of: measuring each bias force from prescribed sample tracks; calculating a difference between a bias force measured at each sample track and a standard bias force Calculating a bias force average value of all the sample tracks by calculating a servo offset value of the entire sample track; and compensating servo offset by outputting a servo control signal from which the bias force average value of the all sample tracks calculated at each servo control is removed.

4. 발명의 중요한 용도4. Important Uses of the Invention

하드 디스크 드라이브의 서보제어에 사용될 수 있다.And can be used for servo control of the hard disk drive.

Description

서보 오프셋 보상방법Servo offset compensation method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제5도는 본 발명의 일실시예에 따른 바이어스 포스 테이블 구성도, 제6도는 본 발명의 일실시예에 따른 바이어스 포스 변화예시도.FIG. 5 is a diagram illustrating a configuration of a bias force table according to an embodiment of the present invention; FIG. 6 is a diagram illustrating an example of a bias force change according to an embodiment of the present invention;

Claims (3)

바이어스 포스 테이블을 구비하는 하드 디스크 드라이브의 서보 오푸셋 보상방법에 있어서, 규정된 샘플 트랙들로부터 각각의 바이어스 포스를 측정하는 과정과, 각각의 샘플트랙에서 측정된 바이어스 포스와 표준 바이어스 포스와의 차이를 계사하여 전 샘플트랙의 바이어스 포스 평균치를 산출하는 과정과, 서보제어시마다 산출된 상기 전 샘플트랙의 바이어스 포스 평균치를 제거한 서보제어신호를 출력함으로서 서보 오프셋을 보상하는 과정으로 이루어짐을 특징으로 하는 서보오프셋 보상방법.A method of compensating servo offsets of a hard disk drive having a bias force table, the method comprising the steps of: measuring each bias force from prescribed sample tracks; determining a difference between a bias force measured in each sample track and a standard bias force Calculating a bias force average value of all the sample tracks by counting the number of samples of the all sample tracks; and compensating servo offset by outputting a servo control signal from which the bias force average value of the all sample tracks calculated at each servo control is removed, Offset compensation method. 제1항에 있어서, 상기 각각의 샘플트랙들에 대한 표준 바이어스 포스는 오프셋 성분이 제로일때의 바이어스 포스값으로서 상기 바이어스 포스 테이블에 저장됨을 특징으로 하는 서보 오프셋 보상방법.The servo offset compensation method of claim 1, wherein the standard bias force for each sample track is stored in the bias force table as a bias force value when the offset component is zero. 제1항에 있어서, 상기 제1과정 및 제2과정은 드라이브 레디 이전에 수행됨을 특징으로 하는 서보 오프셋 보상방법.2. The method of claim 1, wherein the first and second processes are performed before the drive-ready. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960012919A 1996-04-25 1996-04-25 Method for compensating servo offset KR100326181B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960012919A KR100326181B1 (en) 1996-04-25 1996-04-25 Method for compensating servo offset

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960012919A KR100326181B1 (en) 1996-04-25 1996-04-25 Method for compensating servo offset

Publications (2)

Publication Number Publication Date
KR970071685A true KR970071685A (en) 1997-11-07
KR100326181B1 KR100326181B1 (en) 2002-07-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100712512B1 (en) * 2005-05-28 2007-04-30 삼성전자주식회사 bias compensating method of harddisk dirve and bias profile generating method, recording medium, harddisk drive adapting the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468764B1 (en) * 2001-09-13 2005-01-29 삼성전자주식회사 Method and apparatus for providing positional information on a disk

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960014653B1 (en) * 1994-01-14 1996-10-19 엘지전자 주식회사 Auto-offset adjusting apparatus of optical disk player

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100712512B1 (en) * 2005-05-28 2007-04-30 삼성전자주식회사 bias compensating method of harddisk dirve and bias profile generating method, recording medium, harddisk drive adapting the same

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Publication number Publication date
KR100326181B1 (en) 2002-07-27

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