JP4647926B2 - Ｄｃレベル・シフトを含むサーボ・データの処理 - Google Patents

Ｄｃレベル・シフトを含むサーボ・データの処理 Download PDF

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Publication number
JP4647926B2
JP4647926B2 JP2004085827A JP2004085827A JP4647926B2 JP 4647926 B2 JP4647926 B2 JP 4647926B2 JP 2004085827 A JP2004085827 A JP 2004085827A JP 2004085827 A JP2004085827 A JP 2004085827A JP 4647926 B2 JP4647926 B2 JP 4647926B2
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Prior art keywords
data
shift
detector
signal
servo
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JP2004085827A
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Japanese (ja)
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JP2004288359A5 (enExample
JP2004288359A (ja
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エム．アズィツ パーヴェツ
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Agere Systems LLC
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Agere Systems LLC
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of DC offset

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
JP2004085827A 2003-03-24 2004-03-24 Ｄｃレベル・シフトを含むサーボ・データの処理 Expired - Fee Related JP4647926B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45704103P 2003-03-24 2003-03-24
US10/436,527 US7231001B2 (en) 2003-03-24 2003-05-13 Processing servo data having DC level shifts

Related Child Applications (1)

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JP2010230323A Division JP5011429B2 (ja) 2003-03-24 2010-10-13 Ｄｃレベル・シフトを含むサーボ・データの処理

Publications (3)

Publication Number Publication Date
JP2004288359A JP2004288359A (ja) 2004-10-14
JP2004288359A5 JP2004288359A5 (enExample) 2007-04-19
JP4647926B2 true JP4647926B2 (ja) 2011-03-09

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JP2004085827A Expired - Fee Related JP4647926B2 (ja) 2003-03-24 2004-03-24 Ｄｃレベル・シフトを含むサーボ・データの処理
JP2010230323A Expired - Fee Related JP5011429B2 (ja) 2003-03-24 2010-10-13 Ｄｃレベル・シフトを含むサーボ・データの処理

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JP2010230323A Expired - Fee Related JP5011429B2 (ja) 2003-03-24 2010-10-13 Ｄｃレベル・シフトを含むサーボ・データの処理

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US (2) US7231001B2 (enExample)
JP (2) JP4647926B2 (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7075742B2 (en) * 2003-07-16 2006-07-11 Matsushita Electric Industrial Co., Ltd. Servo demodulator systems including multiple servo demodulators
US7054083B2 (en) * 2003-07-16 2006-05-30 Matsushita Electric Industrial Co., Ltd. Systems for searching for SAM patterns at multiple nominal frequencies
US7092177B2 (en) * 2003-07-16 2006-08-15 Matsushita Electric Industrial Co., Ltd. Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters
US7072128B2 (en) * 2003-07-16 2006-07-04 Matsushita Electric Industrial Co., Ltd. Methods for searching for SAM patterns at multiple nominal frequencies
US7499233B1 (en) * 2004-04-20 2009-03-03 Marvell International Ltd. Multi-phase control information detection and signal polarity determination
US7193798B2 (en) * 2005-01-12 2007-03-20 Agere Systems, Inc. Method and apparatus for encoding and decoding a runout correction bit pattern of servo field
US7738202B1 (en) * 2005-10-07 2010-06-15 Seagate Technology, Llc Wide-biphase-detector quality monitor for sensing of pin layer reversal
US7365671B1 (en) * 2006-10-10 2008-04-29 Seagate Technology Llc Communication channel with undersampled interpolative timing recovery
US8201066B1 (en) 2008-03-28 2012-06-12 Western Digital Technologies, Inc. Disk drive comprising a trellis detector having a read signal whitener in the ACS circuit
US8381053B1 (en) 2008-04-09 2013-02-19 Marvell International Ltd. Generating a moving average
US8261171B2 (en) 2011-01-27 2012-09-04 Lsi Corporation Systems and methods for diversity combined data detection
CN103998967B (zh) 2011-10-19 2017-08-29 克罗米斯纤维光学公司 整体式聚合物光纤带
US8730609B1 (en) * 2011-11-22 2014-05-20 Marvell International Ltd. DC shift detection and correction
US9053743B2 (en) * 2013-03-11 2015-06-09 Avago Technologies General Ip (Singapore) Pte. Ltd. Servo marginalization
US9547609B2 (en) * 2013-10-25 2017-01-17 Avago Technologies General Ip (Singapore) Pte. Ltd. Data interface for point-to-point communications between devices
US11665029B2 (en) * 2021-07-01 2023-05-30 Nvidia Corporation Feed forward filter equalizer adaptation using a constrained filter tap coefficient value

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3347468B2 (ja) * 1994-04-20 2002-11-20 キヤノン株式会社 情報再生装置
JP3553292B2 (ja) * 1996-09-30 2004-08-11 富士通株式会社 サーマルアスペリティ除去方法及び磁気ディスク装置
JPH10340417A (ja) * 1997-06-06 1998-12-22 Hitachi Ltd サーマルアスピリティ補償再生チャネル及びデータ記憶ファイル装置及び信号処理ｌｓｉ
JP2000090605A (ja) * 1998-09-08 2000-03-31 Nec Corp 位置検出信号復調方法および磁気ディスク装置
US6242961B1 (en) * 1998-10-08 2001-06-05 Altima Communication, Inc. Methods and circuits for restoration of a drooped DC signal
JP2000156042A (ja) * 1998-11-18 2000-06-06 Fujitsu Ltd 信号処理装置及び信号処理方法及び情報記憶装置並びに情報再生装置
US6504884B1 (en) * 1999-05-12 2003-01-07 Analog Devices, Inc. Method for correcting DC offsets in a receiver
WO2000074055A1 (en) * 1999-05-28 2000-12-07 Fujitsu Limited Signal processing device and method and information storage device
JP2002324370A (ja) * 2001-04-25 2002-11-08 Matsushita Electric Ind Co Ltd ディスク装置、リードエラー防止方法及びリードエラー防止プログラム
US7349469B1 (en) * 2001-08-17 2008-03-25 Ati Research, Inc. DC offset correction for constant modulus equalization

Also Published As

Publication number Publication date
JP2011008914A (ja) 2011-01-13
US20040190646A1 (en) 2004-09-30
US7231001B2 (en) 2007-06-12
US20070172005A1 (en) 2007-07-26
JP5011429B2 (ja) 2012-08-29
JP2004288359A (ja) 2004-10-14
US7466766B2 (en) 2008-12-16

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