JPS57205836A - Information recording medium - Google Patents

Information recording medium

Info

Publication number
JPS57205836A
JPS57205836A JP56089293A JP8929381A JPS57205836A JP S57205836 A JPS57205836 A JP S57205836A JP 56089293 A JP56089293 A JP 56089293A JP 8929381 A JP8929381 A JP 8929381A JP S57205836 A JPS57205836 A JP S57205836A
Authority
JP
Japan
Prior art keywords
recording
area
information recording
recording medium
index
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
JP56089293A
Other languages
Japanese (ja)
Inventor
Akira Nakagawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56089293A priority Critical patent/JPS57205836A/en
Publication of JPS57205836A publication Critical patent/JPS57205836A/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
    • G11B7/00745—Sectoring or header formats within a track

Abstract

PURPOSE:To obtain an information recording medium which is capable of not only accessing easily but also recording the information continuously, and has a large capacity, by providing a pre-format track of a prescribed track number for accessing, on a part of an information recording layer. CONSTITUTION:The surface of an optical disk 1, etc. is constituted, for instance, of an index recordig area and a picture information recording area, an index formatting area 3 is provided on a part of the index recording area, and a picture information formatting area 4 is provided on a part of the picture information recording area. According to such a constitution, a light beam of an optical head can be made to correspond to a corresponding track without using a device having high accuracy. Also, since this recording medium is capable of recording the information continuously, it is possible to generate no dead part in the recording capacity and to make it have a large capacity.
JP56089293A 1981-06-10 1981-06-10 Information recording medium Pending JPS57205836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56089293A JPS57205836A (en) 1981-06-10 1981-06-10 Information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56089293A JPS57205836A (en) 1981-06-10 1981-06-10 Information recording medium

Publications (1)

Publication Number Publication Date
JPS57205836A true JPS57205836A (en) 1982-12-17

Family

ID=13966632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56089293A Pending JPS57205836A (en) 1981-06-10 1981-06-10 Information recording medium

Country Status (1)

Country Link
JP (1) JPS57205836A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154885A (en) * 1983-02-22 1984-09-03 Sharp Corp Magnetic disc and its recording and reproducing system
JPS60239924A (en) * 1984-05-14 1985-11-28 Hitachi Ltd Optical recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154885A (en) * 1983-02-22 1984-09-03 Sharp Corp Magnetic disc and its recording and reproducing system
JPS60239924A (en) * 1984-05-14 1985-11-28 Hitachi Ltd Optical recording and reproducing device

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