KR20060044791A - 헤드 진폭 특성화를 제공하기 위한 장치 - Google Patents

헤드 진폭 특성화를 제공하기 위한 장치 Download PDF

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Publication number
KR20060044791A
KR20060044791A KR1020050025109A KR20050025109A KR20060044791A KR 20060044791 A KR20060044791 A KR 20060044791A KR 1020050025109 A KR1020050025109 A KR 1020050025109A KR 20050025109 A KR20050025109 A KR 20050025109A KR 20060044791 A KR20060044791 A KR 20060044791A
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KR
South Korea
Prior art keywords
signal
data
vga
analog
code
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.)
Withdrawn
Application number
KR1020050025109A
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English (en)
Korean (ko)
Inventor
차드 이 미첼
빅키 엘 피펄
조이 엠 포스
레이몬드 에이 리체타
Original Assignee
히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이.
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.)
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Publication date
Application filed by 히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이. filed Critical 히다치 글로벌 스토리지 테크놀로지스 네덜란드 비.브이.
Publication of KR20060044791A publication Critical patent/KR20060044791A/ko
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
KR1020050025109A 2004-03-29 2005-03-25 헤드 진폭 특성화를 제공하기 위한 장치 Withdrawn KR20060044791A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/811,523 US7027243B2 (en) 2004-03-29 2004-03-29 Apparatus for providing head amplitude characterization
US10/811,523 2004-03-29

Publications (1)

Publication Number Publication Date
KR20060044791A true KR20060044791A (ko) 2006-05-16

Family

ID=34989520

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050025109A Withdrawn KR20060044791A (ko) 2004-03-29 2005-03-25 헤드 진폭 특성화를 제공하기 위한 장치

Country Status (4)

Country Link
US (1) US7027243B2 (enExample)
JP (1) JP2005285311A (enExample)
KR (1) KR20060044791A (enExample)
CN (1) CN100409347C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736409B1 (ko) * 2006-06-26 2007-07-09 삼성전자주식회사 리드/라이트 채널회로, 및 이를 구비하는 하드 디스크드라이브

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7227709B1 (en) 2006-01-23 2007-06-05 Hitachi Global Storage Technologies Netherlands B.V. System and method for providing head amplitude characterization
US8230313B2 (en) * 2008-08-11 2012-07-24 Texas Instruments Incorporated Low-power predecoding based viterbi decoding
US8223448B1 (en) 2010-04-22 2012-07-17 Western Digital Technologies, Inc. Disk drive calibrating preamp for servo sectors and data sectors
US8767326B2 (en) 2012-08-28 2014-07-01 Industrial Business Machines Corporation Dynamically controlling magnetoresistive bias
WO2015071991A1 (ja) * 2013-11-14 2015-05-21 富士機械製造株式会社 サーボコントローラ
CN112187200B (zh) * 2020-10-15 2022-10-14 上海麦歌恩微电子股份有限公司 自动增益控制系统及方法

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US4635142A (en) * 1983-11-22 1987-01-06 Storage Technology Corporation Amplitude sensor with adaptive threshold generation
US5341249A (en) * 1992-08-27 1994-08-23 Quantum Corporation Disk drive using PRML class IV sampling data detection with digital adaptive equalization
US5668678B1 (en) * 1994-11-14 2000-11-28 Cirrus Logic Inc Detecting servo data and servo bursts from discrete time samples of an analog read signal in a sampled amplitude read channel
EP0860005A1 (en) * 1995-08-18 1998-08-26 Quantum Corporation Control loops for low power, high speed prml sampling data detection channel
US5737342A (en) * 1996-05-31 1998-04-07 Quantum Corporation Method for in-chip testing of digital circuits of a synchronously sampled data detection channel
SG52990A1 (en) * 1996-07-09 1998-09-28 Ibm Improvements to radial self-propagation pattern generation for disk file servowriting
US6282038B1 (en) * 1999-02-19 2001-08-28 International Business Machines Corporation Variable gain amplifier with temperature compensation for use in a disk drive system
IT1313390B1 (it) * 1999-07-16 2002-07-23 St Microelectronics Srl Metodo di ottimizzazione dei parametri di un filtro passabasso di pre-equalizzazione per canale di lettura.
US6252528B1 (en) * 1999-08-20 2001-06-26 Conexant Systems, Inc. System and method for variable gain coder-decoder
US6657803B1 (en) * 1999-11-22 2003-12-02 Seagate Technology Llc Method and apparatus for data error recovery using defect threshold detector and viterbi gain
US6429988B1 (en) * 2000-09-22 2002-08-06 International Business Machines Corporation System and method for calibrating a corner frequency of a tunable filter using ADC code difference method
JP4642264B2 (ja) * 2001-04-03 2011-03-02 株式会社日立国際電気 スペクトル拡散通信用相関回路
US6519103B2 (en) * 2001-05-25 2003-02-11 Infineon Technologies Ag View DAC feedback inside analog front circuit
US6661590B2 (en) * 2001-05-25 2003-12-09 Infineon Technologies Ag Efficient analog front end for a read/write channel of a hard disk drive running from a highly regulated power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736409B1 (ko) * 2006-06-26 2007-07-09 삼성전자주식회사 리드/라이트 채널회로, 및 이를 구비하는 하드 디스크드라이브

Also Published As

Publication number Publication date
CN100409347C (zh) 2008-08-06
US20050213238A1 (en) 2005-09-29
US7027243B2 (en) 2006-04-11
JP2005285311A (ja) 2005-10-13
CN1677540A (zh) 2005-10-05

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Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 20050325

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid