JPS6423422A - Optical disk - Google Patents

Optical disk

Info

Publication number
JPS6423422A
JPS6423422A JP62179447A JP17944787A JPS6423422A JP S6423422 A JPS6423422 A JP S6423422A JP 62179447 A JP62179447 A JP 62179447A JP 17944787 A JP17944787 A JP 17944787A JP S6423422 A JPS6423422 A JP S6423422A
Authority
JP
Japan
Prior art keywords
track
sector
reproduction
recordable
recording
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
JP62179447A
Other languages
Japanese (ja)
Inventor
Tadashige Furuya
Kenzo Ishibashi
Shinji Kubota
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62179447A priority Critical patent/JPS6423422A/en
Publication of JPS6423422A publication Critical patent/JPS6423422A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To shorten the retrieval time from a reproduction-only sector group to a recordable sector group by having at least >=1 tracks from the reproduction-only sectors and the recordable sectors. CONSTITUTION:It is assumed here that the reproduction-only sector 4 of the (n-1)th track is reproduced and that a request for data recording arises immediately thereafter. Then, the recording to the recordable sector group 5 of the (n-1)th track can be immediately executed, since there is the recordable sector in the same track. Even if there is the time until the request for the data recording after the reproducing arises, the data recording can be started within the time for one rotation of the largest track unless the movement from the (n-1)th track is made. The reproduction-only sector group 4 of the n-th track can further be reproduced immediately after the recording if the grooves are spiral. Recording/reproducing are thus executed continuously by using an optical disk 1 having the reproduction only sector group 4 from the top of each track and the recordable sector group 5 from the position of the same sector up to the end of each track in such a manner.
JP62179447A 1987-07-17 1987-07-17 Optical disk Pending JPS6423422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62179447A JPS6423422A (en) 1987-07-17 1987-07-17 Optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62179447A JPS6423422A (en) 1987-07-17 1987-07-17 Optical disk

Publications (1)

Publication Number Publication Date
JPS6423422A true JPS6423422A (en) 1989-01-26

Family

ID=16066018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62179447A Pending JPS6423422A (en) 1987-07-17 1987-07-17 Optical disk

Country Status (1)

Country Link
JP (1) JPS6423422A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02281437A (en) * 1989-04-24 1990-11-19 Hitachi Ltd Optical disk medium
JPH0317832A (en) * 1989-06-14 1991-01-25 Hitachi Ltd Recording and reproducing system for optical disk
JPH05135362A (en) * 1991-11-14 1993-06-01 Hitachi Ltd Recording material for information and recording device
US5323380A (en) * 1990-07-02 1994-06-21 Hitachi, Ltd. Information recording disc and system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02281437A (en) * 1989-04-24 1990-11-19 Hitachi Ltd Optical disk medium
JPH0317832A (en) * 1989-06-14 1991-01-25 Hitachi Ltd Recording and reproducing system for optical disk
US5323380A (en) * 1990-07-02 1994-06-21 Hitachi, Ltd. Information recording disc and system
JPH05135362A (en) * 1991-11-14 1993-06-01 Hitachi Ltd Recording material for information and recording device

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