WO2008139773A1 - 光ディスクの信号処理方法及び装置 - Google Patents

光ディスクの信号処理方法及び装置 Download PDF

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Publication number
WO2008139773A1
WO2008139773A1 PCT/JP2008/054360 JP2008054360W WO2008139773A1 WO 2008139773 A1 WO2008139773 A1 WO 2008139773A1 JP 2008054360 W JP2008054360 W JP 2008054360W WO 2008139773 A1 WO2008139773 A1 WO 2008139773A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical disc
diffraction limit
recording pit
less
signal
Prior art date
Application number
PCT/JP2008/054360
Other languages
English (en)
French (fr)
Inventor
Kazuma Kurihara
Takashi Nakano
Original Assignee
National Institute Of Advanced Industrial Science And Technology
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 National Institute Of Advanced Industrial Science And Technology filed Critical National Institute Of Advanced Industrial Science And Technology
Priority to US12/599,659 priority Critical patent/US7983137B2/en
Publication of WO2008139773A1 publication Critical patent/WO2008139773A1/ja

Links

Classifications

    • 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
    • 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
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • 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
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • 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
    • G11B2220/2595—Super-resolution optical discs, i.e. optical discs wherein the size of marks is below the optical diffraction limit
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

　本発明は、光検出器により検出した光ディスクの再生信号について、回折限界以上の記録ピットであるか回折限界以下の記録ピットであるかの判断をし、回折限界以上の記録ピットと回折限界以下の記録ピットの処理に適した信号処理を分割して、イコライザー処理を行なう。この分割処理したおのおの信号を合成することにより信号処理した出力信号を得る。これによって、符号間干渉の影響を低減した再生信号を得る。
PCT/JP2008/054360 2007-05-11 2008-03-11 光ディスクの信号処理方法及び装置 WO2008139773A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/599,659 US7983137B2 (en) 2007-05-11 2008-03-11 Method and apparatus for processing optical disc signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-126398 2007-05-11
JP2007126398A JP4500949B2 (ja) 2007-05-11 2007-05-11 光ディスクの信号処理方法及び装置

Publications (1)

Publication Number Publication Date
WO2008139773A1 true WO2008139773A1 (ja) 2008-11-20

Family

ID=40001996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/054360 WO2008139773A1 (ja) 2007-05-11 2008-03-11 光ディスクの信号処理方法及び装置

Country Status (3)

Country Link
US (1) US7983137B2 (ja)
JP (1) JP4500949B2 (ja)
WO (1) WO2008139773A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5404181B2 (ja) 2009-05-25 2014-01-29 三菱電機株式会社 光ディスク装置
EP3385952B1 (en) * 2015-12-02 2020-08-26 Sony Corporation Information processing device, information processing method, and program

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486367A (en) * 1987-09-28 1989-03-31 Sony Corp Data reproducing device
JPH05135313A (ja) * 1991-11-08 1993-06-01 Sony Corp デジタル信号再生装置
JP2002074735A (ja) * 2000-09-04 2002-03-15 National Institute Of Advanced Industrial & Technology 光信号再生方法及び光信号再生装置
JP2006519456A (ja) * 2003-02-27 2006-08-24 エルジー エレクトロニクス インコーポレーテッド 高密度記録媒体並びに高密度記録媒体のデータ再生を制御するための方法及び装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530641A (en) * 1991-05-17 1996-06-25 Olympus Optical Co., Ltd. Optical recording medium having grooves and lands and/or plural pit lines, and reproducing apparatus therefor
JPH1092037A (ja) * 1996-09-19 1998-04-10 Canon Inc 光磁気記録再生方法及び光磁気記録再生装置
JPH10334534A (ja) * 1997-05-28 1998-12-18 Canon Inc 光磁気記録再生方法及び光磁気記録再生装置
JP3703315B2 (ja) * 1997-10-01 2005-10-05 キヤノン株式会社 光磁気記録再生方法及びその再生装置
JP3787316B2 (ja) * 2002-04-26 2006-06-21 キヤノン株式会社 光磁気記録再生装置
TWI225245B (en) * 2003-06-30 2004-12-11 Ritek Corp Method of reproducing optical recording medium with high recording density
KR20050081260A (ko) * 2004-02-11 2005-08-19 삼성전자주식회사 초해상 정보저장매체에 기록된 정보 재생방법 및 장치
KR20050086305A (ko) * 2004-02-25 2005-08-30 삼성전자주식회사 초해상 정보 저장매체 및 재생 신호 안정화 방법
KR20050092165A (ko) * 2004-03-15 2005-09-21 삼성전자주식회사 복수의 재생 파워 정보를 갖는 정보저장매체
JP2005302095A (ja) 2004-04-08 2005-10-27 Tdk Corp 再生装置および情報記録媒体評価装置
JP4556818B2 (ja) 2005-09-21 2010-10-06 Ｔｄｋ株式会社 光記録媒体への情報記録方法及び装置
CN101079273B (zh) * 2006-03-14 2010-09-08 株式会社理光 数据再现方法、数据再现装置、光盘和数据记录/再现装置
JP4580380B2 (ja) * 2006-12-28 2010-11-10 株式会社日立製作所 光ディスク装置
JP5320567B2 (ja) * 2007-03-29 2013-10-23 独立行政法人国立高等専門学校機構 光ディスク用再生等化方法および再生等化回路

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486367A (en) * 1987-09-28 1989-03-31 Sony Corp Data reproducing device
JPH05135313A (ja) * 1991-11-08 1993-06-01 Sony Corp デジタル信号再生装置
JP2002074735A (ja) * 2000-09-04 2002-03-15 National Institute Of Advanced Industrial & Technology 光信号再生方法及び光信号再生装置
JP2006519456A (ja) * 2003-02-27 2006-08-24 エルジー エレクトロニクス インコーポレーテッド 高密度記録媒体並びに高密度記録媒体のデータ再生を制御するための方法及び装置

Also Published As

Publication number Publication date
US7983137B2 (en) 2011-07-19
JP4500949B2 (ja) 2010-07-14
US20100214897A1 (en) 2010-08-26
JP2008282485A (ja) 2008-11-20

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