DE10196626T1 - Verfahren und Vorrichtung zum Bestimmen des entzerrten Signal/Rausch-Verhältnis in einer Speichervorrichtung - Google Patents

Verfahren und Vorrichtung zum Bestimmen des entzerrten Signal/Rausch-Verhältnis in einer Speichervorrichtung

Info

Publication number
DE10196626T1
DE10196626T1 DE10196626T DE10196626T DE10196626T1 DE 10196626 T1 DE10196626 T1 DE 10196626T1 DE 10196626 T DE10196626 T DE 10196626T DE 10196626 T DE10196626 T DE 10196626T DE 10196626 T1 DE10196626 T1 DE 10196626T1
Authority
DE
Germany
Prior art keywords
determining
noise ratio
equalized signal
memory device
memory
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Withdrawn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
DE10196626T
Other languages
English (en)
Inventor
Chiansong Seng Edmun
Uttheng Kan
Aikchuan Lim
Kayhee Tang
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of DE10196626T1 publication Critical patent/DE10196626T1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • 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
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
    • G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
    • 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
    • G11B20/182—Testing using test patterns
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • 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
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Probability & Statistics with Applications (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE10196626T 2000-09-27 2001-09-26 Verfahren und Vorrichtung zum Bestimmen des entzerrten Signal/Rausch-Verhältnis in einer Speichervorrichtung Withdrawn DE10196626T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23560400P 2000-09-27 2000-09-27
PCT/US2001/030001 WO2002027721A1 (en) 2000-09-27 2001-09-26 Method and apparatus for determining equalized signal-to-noise ratio in a storage device

Publications (1)

Publication Number Publication Date
DE10196626T1 true DE10196626T1 (de) 2003-07-17

Family

ID=22886205

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10196626T Withdrawn DE10196626T1 (de) 2000-09-27 2001-09-26 Verfahren und Vorrichtung zum Bestimmen des entzerrten Signal/Rausch-Verhältnis in einer Speichervorrichtung

Country Status (7)

Country Link
US (2) US6940671B2 (de)
JP (1) JP3919660B2 (de)
KR (1) KR100623786B1 (de)
CN (1) CN100359584C (de)
DE (1) DE10196626T1 (de)
GB (1) GB2382214B (de)
WO (1) WO2002027721A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7286597B2 (en) * 2000-04-28 2007-10-23 Broadcom Corporation Methods and systems for adaptive receiver equalization
SG114553A1 (en) * 2001-06-29 2005-09-28 Seagate Technology Llc Systems, apparatus, and methods to determine thermal decay characterization from an equalized signal-to-noise ratio of a magnetic disc drive device
US7236318B2 (en) * 2002-02-05 2007-06-26 Seagate Technology Llc Built in full speed nonreturn to zero test method and apparatus for a data storage device controller
US7434113B2 (en) * 2002-09-30 2008-10-07 Lecroy Corporation Method of analyzing serial data streams
US7437624B2 (en) 2002-09-30 2008-10-14 Lecroy Corporation Method and apparatus for analyzing serial data streams
US7519874B2 (en) * 2002-09-30 2009-04-14 Lecroy Corporation Method and apparatus for bit error rate analysis
US7392439B2 (en) * 2003-05-09 2008-06-24 Seagate Technology Llc Calculation of data frequencies in recording media
US7203017B1 (en) * 2003-09-23 2007-04-10 Marvell International Ltd. Timing recovery for data storage channels with buffered sectors
KR100736087B1 (ko) * 2005-11-30 2007-07-06 삼성전자주식회사 플로우 컨트롤 장치 및 방법
US7484136B2 (en) * 2006-06-30 2009-01-27 Intel Corporation Signal-to-noise ratio (SNR) determination in the time domain
US7697224B2 (en) * 2006-12-13 2010-04-13 Hitachi Global Storage Technologies Netherlands B.V. Storing AD sampled data of read/write channel into ECC SRAM
US20140047497A1 (en) * 2008-03-12 2014-02-13 Iberium Communications, Inc. Method and system for symbol-rate-independent adaptive equalizer initialization
US9030769B2 (en) * 2013-03-15 2015-05-12 Seagate Technology Llc Data detection in adjacent tracks
US9355679B1 (en) * 2013-11-08 2016-05-31 Seagate Technology Llc Transducer write field curvature characterization and compensation
US9373349B1 (en) * 2015-05-29 2016-06-21 Seagate Technology Llc Relaxing media design constraints with two-dimensional magnetic recording
US10555085B2 (en) * 2017-06-16 2020-02-04 Apple Inc. High aspect ratio moving coil transducer
US10665254B1 (en) 2018-05-21 2020-05-26 Seagate Technology Llc Readback waveform oversampling method and apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625238A (en) 1985-04-12 1986-11-25 Tektronix, Inc. Method and apparatus for detecting a dead zone in the transfer function of a signal processing system
US5754353A (en) * 1993-07-01 1998-05-19 Cirrus Logic, Inc. Channel quality circuit in a sampled amplitude read channel
US5490091A (en) * 1994-03-01 1996-02-06 Guzik Technical Enterprises, Inc. Histograms of processed noise samples for measuring error rate of a PRML data detection channel
US6151178A (en) * 1996-03-19 2000-11-21 Texas Instruments Incorporated Error estimation circuit and method using an analog-to-digital converter
JPH09297966A (ja) * 1996-05-08 1997-11-18 Toshiba Corp デジタル信号再生装置
US5721816A (en) * 1996-07-29 1998-02-24 Kusbel; Paul F. Adaptive recovery of read and write errors in a disc drive
KR100260549B1 (ko) * 1998-04-13 2000-07-01 윤종용 광 디스크 재생장치의 리드채널회로
US6687205B1 (en) * 1998-06-09 2004-02-03 Seagate Technology Llc Parallel coded spread spectrum communication for data storage
US6185175B1 (en) * 1998-12-02 2001-02-06 Cirrus Logic, Inc. Sampled amplitude read channel employing noise whitening in a remod/demod sequence detector
JP3296327B2 (ja) * 1999-04-23 2002-06-24 日本電気株式会社 磁気記録装置の設計開発システム
US6446236B1 (en) * 1999-10-13 2002-09-03 Maxtor Corporation Reading encoded information subject to random and transient errors

Also Published As

Publication number Publication date
KR20030032057A (ko) 2003-04-23
CN1466756A (zh) 2004-01-07
US20020054443A1 (en) 2002-05-09
US6583942B2 (en) 2003-06-24
US20020128787A1 (en) 2002-09-12
KR100623786B1 (ko) 2006-09-18
US6940671B2 (en) 2005-09-06
JP2004510284A (ja) 2004-04-02
GB0305430D0 (en) 2003-04-16
CN100359584C (zh) 2008-01-02
GB2382214B (en) 2004-11-17
GB2382214A (en) 2003-05-21
WO2002027721A1 (en) 2002-04-04
JP3919660B2 (ja) 2007-05-30

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