HK1072124A1 - A quality-testing apparatus and method - Google Patents

A quality-testing apparatus and method

Info

Publication number
HK1072124A1
HK1072124A1 HK05104904A HK05104904A HK1072124A1 HK 1072124 A1 HK1072124 A1 HK 1072124A1 HK 05104904 A HK05104904 A HK 05104904A HK 05104904 A HK05104904 A HK 05104904A HK 1072124 A1 HK1072124 A1 HK 1072124A1
Authority
HK
Hong Kong
Prior art keywords
laser beam
beam spot
optical disk
tracks
light source
Prior art date
Application number
HK05104904A
Other languages
English (en)
Inventor
Ulf Wilhelmsson
Original Assignee
Audiodev Aktiebolag
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 Audiodev Aktiebolag filed Critical Audiodev Aktiebolag
Publication of HK1072124A1 publication Critical patent/HK1072124A1/xx

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
    • 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
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/9506—Optical discs
    • 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
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/268—Post-production operations, e.g. initialising phase-change recording layers, checking for defects

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Analytical Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
HK05104904A 2001-10-25 2005-06-10 A quality-testing apparatus and method HK1072124A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0103548A SE523284C2 (sv) 2001-10-25 2001-10-25 Metod och apparat för kvalitetstestning
PCT/SE2002/001900 WO2003036627A1 (en) 2001-10-25 2002-10-18 A quality-testing apparatus and method

Publications (1)

Publication Number Publication Date
HK1072124A1 true HK1072124A1 (en) 2005-08-12

Family

ID=20285759

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05104904A HK1072124A1 (en) 2001-10-25 2005-06-10 A quality-testing apparatus and method

Country Status (11)

Country Link
US (1) US7286458B2 (zh)
EP (1) EP1438716B1 (zh)
JP (1) JP2005506650A (zh)
KR (1) KR20040045501A (zh)
CN (1) CN1279516C (zh)
AT (1) ATE369603T1 (zh)
DE (1) DE60221686T2 (zh)
HK (1) HK1072124A1 (zh)
SE (1) SE523284C2 (zh)
TW (1) TWI246066B (zh)
WO (1) WO2003036627A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE528486C2 (sv) * 2004-05-24 2006-11-28 Audiodev Ab Kvalitetstestningsmetod för optiska databärare
US7161669B2 (en) 2005-05-06 2007-01-09 Kla- Tencor Technologies Corporation Wafer edge inspection
KR20070082504A (ko) * 2006-02-15 2007-08-21 삼성전자주식회사 신호 품질 평가 장치 및 방법과 광 디스크 구동기
US7424381B2 (en) * 2006-02-15 2008-09-09 Samsung Electronics Co., Ltd. Apparatus and method of estimating the quality of input signal, and optical disc driver
JP4501900B2 (ja) * 2006-06-19 2010-07-14 ティアック株式会社 光ディスク装置
US20100067338A1 (en) * 2008-09-15 2010-03-18 Lite-On It Corporation Method of Determining the Quality of Data on an Optical Disc
US8927891B2 (en) * 2009-11-30 2015-01-06 Ncr Corporation Media quality assessment system and method
JP2014191839A (ja) * 2013-03-27 2014-10-06 Hitachi-Lg Data Storage Inc 光ディスクライブラリ装置における光ディスク検査方法および光ディスクライブラリ装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0740373B2 (ja) * 1987-02-18 1995-05-01 シャープ株式会社 光学式ディスク再生装置のトラッキングエラー信号発生装置
KR100285315B1 (ko) * 1997-09-24 2001-04-02 구자홍 광디스크 품질검사 방법 및 장치
JP4258058B2 (ja) * 1999-03-23 2009-04-30 ソニー株式会社 円盤状記録媒体の検査装置及び検査方法

Also Published As

Publication number Publication date
DE60221686D1 (de) 2007-09-20
KR20040045501A (ko) 2004-06-01
ATE369603T1 (de) 2007-08-15
WO2003036627A1 (en) 2003-05-01
US20040264307A1 (en) 2004-12-30
TWI246066B (en) 2005-12-21
DE60221686T2 (de) 2008-04-30
EP1438716A1 (en) 2004-07-21
SE0103548D0 (sv) 2001-10-25
JP2005506650A (ja) 2005-03-03
CN1279516C (zh) 2006-10-11
US7286458B2 (en) 2007-10-23
SE523284C2 (sv) 2004-04-06
CN1575493A (zh) 2005-02-02
SE0103548L (sv) 2003-04-26
EP1438716B1 (en) 2007-08-08

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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: 20101018