WO1997029485A1 - Decodeur de donnees - Google Patents

Decodeur de donnees Download PDF

Info

Publication number
WO1997029485A1
WO1997029485A1 PCT/JP1997/000336 JP9700336W WO9729485A1 WO 1997029485 A1 WO1997029485 A1 WO 1997029485A1 JP 9700336 W JP9700336 W JP 9700336W WO 9729485 A1 WO9729485 A1 WO 9729485A1
Authority
WO
WIPO (PCT)
Prior art keywords
level
signal
continuous length
bit
bit data
Prior art date
Application number
PCT/JP1997/000336
Other languages
English (en)
French (fr)
Inventor
Toshiyuki Nakagawa
Hiroyuki Ino
Shunji Yoshimura
Shinichi Kai
Original Assignee
Sony Corporation
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 Sony Corporation filed Critical Sony Corporation
Priority to DE69724201T priority Critical patent/DE69724201T2/de
Priority to US08/930,162 priority patent/US6111833A/en
Priority to EP97902634A priority patent/EP0821360B1/en
Publication of WO1997029485A1 publication Critical patent/WO1997029485A1/ja

Links

Classifications

    • 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
    • G11B20/20—Signal processing not specific to the method of recording or reproducing; Circuits therefor for correction of skew for multitrack recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
    • 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
    • G11B20/00615—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames
    • 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
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10361—Improvement or modification of read or write signals signal quality assessment digital demodulation process
    • G11B20/1037—Improvement or modification of read or write signals signal quality assessment digital demodulation process based on hard decisions, e.g. by evaluating bit error rates before or after ECC decoding
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H03M5/02—Conversion to or from representation by pulses
    • H03M5/04—Conversion to or from representation by pulses the pulses having two levels
    • H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
    • H03M5/145—Conversion to or from block codes or representations thereof
    • 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
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
PCT/JP1997/000336 1996-02-08 1997-02-07 Decodeur de donnees WO1997029485A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69724201T DE69724201T2 (de) 1996-02-08 1997-02-07 Datendekoder
US08/930,162 US6111833A (en) 1996-02-08 1997-02-07 Data decoder
EP97902634A EP0821360B1 (en) 1996-02-08 1997-02-07 Data decoder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8/22530 1996-02-08
JP2253096 1996-02-08

Publications (1)

Publication Number Publication Date
WO1997029485A1 true WO1997029485A1 (fr) 1997-08-14

Family

ID=12085362

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/000336 WO1997029485A1 (fr) 1996-02-08 1997-02-07 Decodeur de donnees

Country Status (6)

Country Link
US (1) US6111833A (ja)
EP (1) EP0821360B1 (ja)
KR (1) KR100465361B1 (ja)
CN (1) CN1129134C (ja)
DE (1) DE69724201T2 (ja)
WO (1) WO1997029485A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836186A2 (en) * 1996-10-11 1998-04-15 Sony Corporation Data decoding method and device

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3439979B2 (ja) * 1998-03-13 2003-08-25 富士通株式会社 データ読み取り方法、データ読み取り装置、及び、記録媒体
US6205103B1 (en) * 1998-06-30 2001-03-20 Plasmon Lms, Inc. Enhanced adaptive and selective ISI cancellation for a read channel in storage technologies
KR100354175B1 (ko) * 1998-11-20 2002-09-28 엘지전자 주식회사 데이터 변/복조방법과 이를 이용한 변/복조 장치 및 그 기록매체
JP4193262B2 (ja) * 1999-01-19 2008-12-10 ソニー株式会社 復号装置およびデータ再生装置、並びに復号方法
TR200003458T1 (tr) * 1999-03-23 2001-04-20 Koninklijke Philips Electronics N.V. Bilgi taşıyıcı, kodlama için cihaz, kodlama yöntemi, dekode etme için cihaz ve dekode etme yöntemi.
US6573845B2 (en) * 2000-01-14 2003-06-03 Koninklijke Philips Electronics N.V. Method for converting an analogue signal into a binary output signal
US6732320B1 (en) * 2000-04-28 2004-05-04 Promos Technologies Inc. Method and system for improved error correction in optical media data processing
KR20020029430A (ko) * 2000-05-25 2002-04-18 요트.게.아. 롤페즈 검출기, 재생장치, 수신기 및 검출방법
KR100362387B1 (ko) * 2000-08-26 2002-11-23 삼성전자 주식회사 주기 검출 장치 및 방법
SG102605A1 (en) * 2000-12-07 2004-03-26 Inst Data Storage A data processing apparatus and method for d=2 optical channels
EP1402530A1 (en) * 2001-05-10 2004-03-31 Koninklijke Philips Electronics N.V. Signal processor and apparatus for reproducing information
CN100433157C (zh) * 2003-11-24 2008-11-12 联发科技股份有限公司 信息回复方法及其装置
KR100688534B1 (ko) * 2005-01-26 2007-03-02 삼성전자주식회사 변조 코드의 부호화 및 복호화방법 및 장치
JPWO2006100981A1 (ja) * 2005-03-18 2008-09-04 日本電気株式会社 情報記録媒体、情報再生装置、情報再生方法
WO2008068857A1 (ja) * 2006-12-05 2008-06-12 Pioneer Corporation 情報再生装置及び方法、並びにコンピュータプログラム
WO2008068858A1 (ja) * 2006-12-05 2008-06-12 Pioneer Corporation 情報再生装置及び方法、並びにコンピュータプログラム
EP2124363B1 (en) * 2007-09-06 2013-01-23 Sharp Kabushiki Kaisha Communication apparatus and communication method
US9087025B2 (en) * 2009-02-05 2015-07-21 Micron Technology, Inc. Data encoding using spare channels in a memory system
US20110090773A1 (en) * 2009-10-16 2011-04-21 Chih-Ching Yu Apparatus for generating viterbi-processed data using an input signal obtained from reading an optical disc
US8493246B2 (en) * 2011-12-20 2013-07-23 General Electric Company Methods and systems for decoding data
US8432780B1 (en) * 2012-05-10 2013-04-30 Mediatek Inc. Viterbi decoding apparatus using level information generator supporting different hardware configurations to generate level information to Viterbi decoder and related method thereof
JP2017188179A (ja) * 2016-04-06 2017-10-12 株式会社東芝 磁気記録再生装置および磁気記録再生方法
US10002650B1 (en) * 2016-12-21 2018-06-19 Mediatek Inc. Signal quality detection circuit for generating signal quality detection result according to two-dimensional nominal sampling point pattern and associated signal quality detection method
CN114079780A (zh) * 2020-08-20 2022-02-22 腾讯科技（深圳）有限公司 视频解码方法、视频编码方法、装置、设备及存储介质

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05198100A (ja) * 1992-01-21 1993-08-06 Pioneer Electron Corp 光学式記録媒体を用いた情報記録再生装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4488142A (en) * 1981-12-31 1984-12-11 International Business Machines Corporation Apparatus for encoding unconstrained data onto a (1,7) format with rate 2/3
JPS59165212A (ja) * 1983-03-08 1984-09-18 Sony Corp 情報信号再生装置
JP2911704B2 (ja) * 1993-02-16 1999-06-23 パイオニア株式会社 ディジタル信号再生装置
JPH07111042A (ja) * 1993-10-08 1995-04-25 Hitachi Ltd データ弁別回路
JPH07220409A (ja) * 1994-02-04 1995-08-18 Pioneer Electron Corp ディジタル信号再生装置
JP3417704B2 (ja) * 1995-01-20 2003-06-16 パイオニア株式会社 ディジタル信号再生装置
JP3539091B2 (ja) * 1996-10-11 2004-06-14 ソニー株式会社 データ復号方法及びデータ復号装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05198100A (ja) * 1992-01-21 1993-08-06 Pioneer Electron Corp 光学式記録媒体を用いた情報記録再生装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836186A2 (en) * 1996-10-11 1998-04-15 Sony Corporation Data decoding method and device
EP0836186B1 (en) * 1996-10-11 2004-05-12 Sony Corporation Data decoding method and device

Also Published As

Publication number Publication date
DE69724201D1 (de) 2003-09-25
US6111833A (en) 2000-08-29
EP0821360A4 (en) 1999-04-21
EP0821360A1 (en) 1998-01-28
KR100465361B1 (ko) 2005-05-24
KR19980703717A (ko) 1998-12-05
DE69724201T2 (de) 2004-06-17
CN1183160A (zh) 1998-05-27
EP0821360B1 (en) 2003-08-20
CN1129134C (zh) 2003-11-26

Similar Documents

Publication Publication Date Title
WO1997029485A1 (fr) Decodeur de donnees
EP0595322B1 (en) Optical information recording or reproducing apparatus
KR100247964B1 (ko) 자동 문턱값 제어를 이용한 피크 검출기와 그 방법
US6288992B1 (en) Optical reproducing device and optical memory medium
EP0652559A3 (en) Data readout system for optical disk
US5661709A (en) Digital signal detection circuit
SE9303942L (sv) Feldetekteringssystem
US5537422A (en) Synchronization signal detector, synchronization signal detecting method and demodulator
JP3886300B2 (ja) 信号処理装置及びその信号処理方法
KR960025624A (ko) 데이타 기억 장치 및 통신 시스템을 위한 다중 경로 채널 장치 및 방법
US5329554A (en) Digital pulse detector
MY123272A (en) Disk drive capable of rereading same signal from disk in case of error in read signal
EP0385867A3 (en) Digital signal reproducing apparatus
US5745468A (en) Mark edge recorded signal reproducing device for use in optical disk apparatus
US6222808B1 (en) Optical information reproducing method and apparatus
US4546393A (en) Digital data transmission system with modified NRZI
AU684890B2 (en) Modulation method, recording method, reproducing method, recording and reproducing apparatus, recording and reproducing method and reproducing apparatus
US6597295B1 (en) Decoding apparatus and decoding method
EP0962017B1 (en) Method and apparatus for maximum likelihood detection
EP0836186A3 (en) Data decoding method and device
US6664904B2 (en) Method and device for recovering RLL constrained data to be decoded
US5673269A (en) Method and apparatus for detecting valid data peaks
CA1159569A (en) Method of modulation and demodulation of data and apparatus for the same
US5701212A (en) Digital tape recorder having sync detection based on a correlation between extracted sync and id fields
CA2074691A1 (en) Information reproducing circuit

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 97190241.0

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): CN KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): DE FR GB

WWE Wipo information: entry into national phase

Ref document number: 08930162

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1997902634

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1019970707117

Country of ref document: KR

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1997902634

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1019970707117

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1997902634

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1019970707117

Country of ref document: KR