SG48113A1 - Signalling the nature of defects in optical information carriers - Google Patents

Signalling the nature of defects in optical information carriers

Info

Publication number
SG48113A1
SG48113A1 SG1996007104A SG1996007104A SG48113A1 SG 48113 A1 SG48113 A1 SG 48113A1 SG 1996007104 A SG1996007104 A SG 1996007104A SG 1996007104 A SG1996007104 A SG 1996007104A SG 48113 A1 SG48113 A1 SG 48113A1
Authority
SG
Singapore
Prior art keywords
signalling
defects
nature
optical information
information carriers
Prior art date
Application number
SG1996007104A
Inventor
Engelbert Laufer
Hans-Robert Kuhn
Richard Rutschmann
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 SG48113A1 publication Critical patent/SG48113A1/en

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
    • G11B7/08—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
    • G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • 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
    • 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
    • G11B2220/2587—Laser Discs; Optical disc using analog recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
SG1996007104A 1991-06-07 1992-05-28 Signalling the nature of defects in optical information carriers SG48113A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4118672 1991-06-07
DE4120870 1991-06-25
DE4210264 1992-03-28

Publications (1)

Publication Number Publication Date
SG48113A1 true SG48113A1 (en) 1998-04-17

Family

ID=27202565

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996007104A SG48113A1 (en) 1991-06-07 1992-05-28 Signalling the nature of defects in optical information carriers

Country Status (12)

Country Link
EP (3) EP0587615B1 (en)
JP (2) JP3270044B2 (en)
KR (1) KR100282089B1 (en)
CN (1) CN1040376C (en)
DE (2) DE59208917D1 (en)
ES (2) ES2142964T3 (en)
HK (1) HK1011112A1 (en)
MY (1) MY108595A (en)
PT (1) PT671742E (en)
SG (1) SG48113A1 (en)
TW (1) TW207581B (en)
WO (1) WO1992022064A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266791B1 (en) * 1999-02-05 2001-07-24 Hewlett-Packard Company System and method for selectively recovering areas on a disc marked as unuseable
US7023777B2 (en) * 2000-01-13 2006-04-04 Matsushita Electric Industrial Co., Ltd. Optical disk recording/reproduction apparatus with a detection means for detecting dirt on the optical disk
JP3785972B2 (en) * 2001-09-06 2006-06-14 ティアック株式会社 Signal processing circuit
KR100964686B1 (en) * 2003-11-14 2010-06-21 엘지전자 주식회사 Method for testing Anti-Contamination of Disk Surface
ITMI20040985A1 (en) * 2004-05-17 2004-08-17 Technicolor S P A AUTOMATIC SOUND SYNCHRONIZATION DETECTION
EP2211342B1 (en) * 2006-07-10 2011-11-02 Panasonic Corporation Optical disc device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US287587A (en) * 1883-10-30 beainebd spoonee
DE2851822C2 (en) * 1978-11-30 1986-01-16 Polygram Gmbh, 2000 Hamburg Method for error assessment in the case of signals stored in spiral tracks on rotating information carriers and circuit arrangement for carrying out the method
US4287587A (en) * 1980-03-07 1981-09-01 Rca Corporation Signal loss dectector for video disc
JPS5837847A (en) * 1981-08-31 1983-03-05 Sony Corp Optical disk reproducer
JPS59142756A (en) * 1983-02-04 1984-08-16 Sony Corp Optical disk reproducing device
JPH0643901Y2 (en) * 1983-03-15 1994-11-14 パイオニア株式会社 Optical information reader with dirt detection display function
DE3341628A1 (en) * 1983-11-17 1985-05-30 Polygram Gmbh, 2000 Hamburg DEVICE ARRANGEMENT FOR DETECTING ERRORS IN DISK-SHAPED INFORMATION CARRIERS
JPS60127574A (en) * 1983-12-14 1985-07-08 Toshiba Corp Drop-out detecting circuit
JPS61242347A (en) * 1985-04-19 1986-10-28 Toshiba Corp Optical disk reproducing device
JPS62236192A (en) * 1986-04-07 1987-10-16 Sony Corp Tape position detector
JPS6332794A (en) * 1986-07-25 1988-02-12 Matsushita Electric Ind Co Ltd Information reproducing and recording device
DE3719489A1 (en) * 1987-06-11 1988-12-29 Thomson Brandt Gmbh DEVICE FOR PLAYING BACK DATA
JP2638825B2 (en) * 1987-08-06 1997-08-06 オムロン株式会社 Optical card recorded information reproducing device
JPH01209344A (en) * 1988-02-17 1989-08-23 Seiko Epson Corp Apparatus and method for inspecting defect of optical disc and optical disc substrate
DE4029220C2 (en) * 1990-09-14 1999-06-10 Thomson Brandt Gmbh Arrangement for measuring the bit error rate of digital signals

Also Published As

Publication number Publication date
EP0671742B1 (en) 2000-01-12
CN1067761A (en) 1993-01-06
MY108595A (en) 1996-10-31
DE59208917D1 (en) 1997-10-23
JP3270044B2 (en) 2002-04-02
ES2142964T3 (en) 2000-05-01
KR940701577A (en) 1994-05-28
JP3442757B2 (en) 2003-09-02
EP0517099A1 (en) 1992-12-09
PT671742E (en) 2000-04-28
WO1992022064A1 (en) 1992-12-10
ES2109357T3 (en) 1998-01-16
EP0671742A1 (en) 1995-09-13
EP0587615B1 (en) 1997-09-17
DE59209799D1 (en) 2000-02-17
TW207581B (en) 1993-06-11
KR100282089B1 (en) 2001-03-02
CN1040376C (en) 1998-10-21
JPH06507749A (en) 1994-09-01
EP0587615A1 (en) 1994-03-23
JP2002157844A (en) 2002-05-31
HK1011112A1 (en) 1999-07-02

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