JPS5584052A - Optical recorder - Google Patents

Optical recorder

Info

Publication number
JPS5584052A
JPS5584052A JP15890178A JP15890178A JPS5584052A JP S5584052 A JPS5584052 A JP S5584052A JP 15890178 A JP15890178 A JP 15890178A JP 15890178 A JP15890178 A JP 15890178A JP S5584052 A JPS5584052 A JP S5584052A
Authority
JP
Japan
Prior art keywords
recording
regions
reproduction
signals
recording medium
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP15890178A
Other languages
Japanese (ja)
Inventor
Koichi Ogawa
Shigeru Arai
Seiya Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15890178A priority Critical patent/JPS5584052A/en
Publication of JPS5584052A publication Critical patent/JPS5584052A/en
Pending legal-status Critical Current

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
    • G11B7/007—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
    • 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
    • G11B20/02—Analogue recording or reproducing
    • G11B20/025—Error detection or correction

Landscapes

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

Abstract

PURPOSE:To reduce the error occurrence rate when the information is reproduced by dividing the recording region of the recording medium into three parts or more and then recording the same information on each of the divided regions. CONSTITUTION:The recording region of the recording medium is divided equally into three parts S1, S2 and S3, an recording signals Wt are supplied to these regions via distributor DEV plus record/reproduction heads H1-H3. Thus exactly the same information can be recorded these three recording regions. At the reproduction time, two units of the reproduction signals of heads H1-H3 are supplied to AND gates A1-A3 which are paired each and then delivered through OR gate OR. In this case, even if the reproduction signals at one of three regions S1-S3 may have some error due to the fault of the recording medium and other factors, the selection control can be given via gates A1-A3 plus OR as long as the signals of other two regions are correct. Thus the signal containing no error can be delivered. In such way, the error occurrence rate can be reduced, thus ensuring the record/ reproduction of the correct information.
JP15890178A 1978-12-20 1978-12-20 Optical recorder Pending JPS5584052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15890178A JPS5584052A (en) 1978-12-20 1978-12-20 Optical recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15890178A JPS5584052A (en) 1978-12-20 1978-12-20 Optical recorder

Publications (1)

Publication Number Publication Date
JPS5584052A true JPS5584052A (en) 1980-06-24

Family

ID=15681833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15890178A Pending JPS5584052A (en) 1978-12-20 1978-12-20 Optical recorder

Country Status (1)

Country Link
JP (1) JPS5584052A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081184A2 (en) * 1981-12-04 1983-06-15 Discovision Associates Banded and interleaved videodisc format
US6061194A (en) * 1997-04-15 2000-05-09 Lsi Logic Corporation Device and method for storing and retrieving original and redundant data
US6061806A (en) * 1997-05-12 2000-05-09 Lsi Logic Corporation Method and apparatus for maintaining automatic termination of a bus in the event of a host failure
EP1471525A1 (en) * 2002-01-31 2004-10-27 Sony Corporation Recording medium, recording method, and recording apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081184A2 (en) * 1981-12-04 1983-06-15 Discovision Associates Banded and interleaved videodisc format
US4796098A (en) * 1981-12-04 1989-01-03 Discovision Associates Banded and interleaved video disc format with duplicate information stored at different disc locations
US6061194A (en) * 1997-04-15 2000-05-09 Lsi Logic Corporation Device and method for storing and retrieving original and redundant data
US6061806A (en) * 1997-05-12 2000-05-09 Lsi Logic Corporation Method and apparatus for maintaining automatic termination of a bus in the event of a host failure
EP1471525A1 (en) * 2002-01-31 2004-10-27 Sony Corporation Recording medium, recording method, and recording apparatus
EP1471525A4 (en) * 2002-01-31 2010-09-01 Sony Corp Recording medium, recording method, and recording apparatus
US8000218B2 (en) 2002-01-31 2011-08-16 Sony Corporation Recording medium, recording method, and recording apparatus

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