JPS57205831A - Record format of optical disk device - Google Patents

Record format of optical disk device

Info

Publication number
JPS57205831A
JPS57205831A JP9178381A JP9178381A JPS57205831A JP S57205831 A JPS57205831 A JP S57205831A JP 9178381 A JP9178381 A JP 9178381A JP 9178381 A JP9178381 A JP 9178381A JP S57205831 A JPS57205831 A JP S57205831A
Authority
JP
Japan
Prior art keywords
data
address
area
record format
written
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
JP9178381A
Other languages
Japanese (ja)
Inventor
Yuji Inoue
Toshibumi Hatagami
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 JP9178381A priority Critical patent/JPS57205831A/en
Publication of JPS57205831A publication Critical patent/JPS57205831A/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits

Abstract

PURPOSE:To improve reliability of a data, by constituting a record format of a data address area, a data area, and address area in which a check result of the data is written, respectively. CONSTITUTION:This record format is constituted so that a data address (the first cylinder/head/sector) and information are written in an address (1) area 11 and a data area 12, respectively, and a check result of a data by a readout check system, and an alternation address (the second cylinder/head/sector) are written in an address (2) area 13. Since this system checks a data after it has been written, the data is always in a correct state, therefore, reliability of the data is improved.
JP9178381A 1981-06-15 1981-06-15 Record format of optical disk device Pending JPS57205831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9178381A JPS57205831A (en) 1981-06-15 1981-06-15 Record format of optical disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9178381A JPS57205831A (en) 1981-06-15 1981-06-15 Record format of optical disk device

Publications (1)

Publication Number Publication Date
JPS57205831A true JPS57205831A (en) 1982-12-17

Family

ID=14036187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9178381A Pending JPS57205831A (en) 1981-06-15 1981-06-15 Record format of optical disk device

Country Status (1)

Country Link
JP (1) JPS57205831A (en)

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