HK1018976A1 - Device for reading from or writing to optical recording media - Google Patents

Device for reading from or writing to optical recording media

Info

Publication number
HK1018976A1
HK1018976A1 HK99104080A HK99104080A HK1018976A1 HK 1018976 A1 HK1018976 A1 HK 1018976A1 HK 99104080 A HK99104080 A HK 99104080A HK 99104080 A HK99104080 A HK 99104080A HK 1018976 A1 HK1018976 A1 HK 1018976A1
Authority
HK
Hong Kong
Prior art keywords
writing
reading
optical recording
recording media
media
Prior art date
Application number
HK99104080A
Other languages
English (en)
Inventor
Buechler Christian
Original Assignee
Thomson Brandt Gmbh
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 Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK1018976A1 publication Critical patent/HK1018976A1/xx

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
    • G11B20/10—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
    • G11B20/10388—Improvement or modification of read or write signals signal quality assessment control of the read or write heads, e.g. tracking errors, defocus or tilt compensation
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
    • 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
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optical Recording Or Reproduction (AREA)
HK99104080A 1997-10-31 1999-09-21 Device for reading from or writing to optical recording media HK1018976A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19748188A DE19748188A1 (de) 1997-10-31 1997-10-31 Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger

Publications (1)

Publication Number Publication Date
HK1018976A1 true HK1018976A1 (en) 2000-01-14

Family

ID=7847245

Family Applications (1)

Application Number Title Priority Date Filing Date
HK99104080A HK1018976A1 (en) 1997-10-31 1999-09-21 Device for reading from or writing to optical recording media

Country Status (9)

Country Link
US (1) US6414917B1 (ja)
EP (1) EP0913816B1 (ja)
JP (1) JP4284725B2 (ja)
KR (1) KR100577933B1 (ja)
DE (2) DE19748188A1 (ja)
HK (1) HK1018976A1 (ja)
ID (1) ID21191A (ja)
MY (1) MY123154A (ja)
SG (1) SG73568A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3859107B2 (ja) 1999-04-14 2006-12-20 パイオニア株式会社 液晶チルトサーボ装置
DE19961440A1 (de) * 1999-12-20 2001-06-21 Thomson Brandt Gmbh Gerät zum Lesen und/oder Schreiben optischer Aufzeichnungsträger
KR100869004B1 (ko) * 2005-05-16 2008-11-17 엘지전자 주식회사 진공청소기
WO2008012913A1 (en) * 2006-07-28 2008-01-31 Panasonic Corporation Analog radio receiver
TW201836390A (zh) * 2017-03-22 2018-10-01 日商索尼股份有限公司 無線電信設備和方法
KR20210099470A (ko) 2020-02-04 2021-08-12 엘지전자 주식회사 청소기

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3672426D1 (de) * 1985-09-27 1990-08-09 Sharp Kk Spurnachlaufverfahren fuer eine optische speicherplatte.
US4866688A (en) * 1985-12-20 1989-09-12 Hitachi, Ltd. Composite tracking servo system for optical disc apparatus with track offset correction
JPS63142533A (ja) * 1986-12-03 1988-06-14 Fujitsu Ltd 光学的記録再生装置
US5351224A (en) * 1990-03-08 1994-09-27 Oki Electric Industry Co., Ltd. Adjustment of tracking servo and focusing servo in optical data recording/reproducing apparatus
JPH0478034A (ja) * 1990-05-15 1992-03-12 Toshiba Corp 光情報記録媒体及び光情報記録再生装置
US5268887A (en) * 1990-05-15 1993-12-07 Kabushiki Kaisha Toshiba Optical recording medium having offset-compensating areas
JPH0453036A (ja) * 1990-06-20 1992-02-20 Hitachi Maxell Ltd 光学情報記録再生装置
KR950010418B1 (ko) * 1991-08-28 1995-09-16 미쯔비시덴끼 가부시끼가이샤 광기록재생장치
JPH06139602A (ja) * 1992-10-28 1994-05-20 Fujitsu Ltd 光ディスク装置のトラックエラー検出回路
JPH07114019B2 (ja) * 1993-01-14 1995-12-06 日本電気株式会社 トラックエラー信号検出装置
JP3426303B2 (ja) * 1993-11-19 2003-07-14 パイオニア株式会社 光ディスク及びその記録情報再生装置
JPH0877582A (ja) * 1994-08-31 1996-03-22 Sanyo Electric Co Ltd 光ディスク装置
JPH0887758A (ja) * 1994-09-13 1996-04-02 Toshiba Corp 光ディスク装置
US5872767A (en) * 1995-02-17 1999-02-16 Matsushita Electric Industrial Co., Ltd. Optical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracks
JPH07282458A (ja) * 1995-04-06 1995-10-27 Sony Corp トラツキング制御装置及び方法
JP3232966B2 (ja) * 1995-08-22 2001-11-26 松下電器産業株式会社 光ディスク記録再生装置のトラッキング制御装置
JP3550836B2 (ja) * 1995-10-19 2004-08-04 ソニー株式会社 光学装置におけるトラッキングサーボ装置及びトラッキングサーボ方法
JP3560410B2 (ja) * 1996-03-25 2004-09-02 三菱電機株式会社 光ディスク装置および光ディスク
KR100298929B1 (ko) * 1997-08-16 2001-10-26 구자홍 정보기록/재생방법및장치

Also Published As

Publication number Publication date
US6414917B1 (en) 2002-07-02
JP4284725B2 (ja) 2009-06-24
DE19748188A1 (de) 1999-05-06
JPH11232666A (ja) 1999-08-27
MY123154A (en) 2006-05-31
EP0913816B1 (en) 2008-02-06
KR100577933B1 (ko) 2006-10-19
DE69839084T2 (de) 2009-06-04
EP0913816A3 (en) 2000-01-12
KR19990037275A (ko) 1999-05-25
DE69839084D1 (de) 2008-03-20
EP0913816A2 (en) 1999-05-06
SG73568A1 (en) 2000-06-20
ID21191A (id) 1999-05-06

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20111019