JPH0213373B2 - - Google Patents

Info

Publication number
JPH0213373B2
JPH0213373B2 JP57128396A JP12839682A JPH0213373B2 JP H0213373 B2 JPH0213373 B2 JP H0213373B2 JP 57128396 A JP57128396 A JP 57128396A JP 12839682 A JP12839682 A JP 12839682A JP H0213373 B2 JPH0213373 B2 JP H0213373B2
Authority
JP
Japan
Prior art keywords
index mark
optical disk
signal
output
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.)
Expired - Lifetime
Application number
JP57128396A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5919242A (ja
Inventor
Isao Sato
Tomio Yoshida
Shunji Oohara
Kenji Koishi
Yuzuru Kuroki
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 JP12839682A priority Critical patent/JPS5919242A/ja
Publication of JPS5919242A publication Critical patent/JPS5919242A/ja
Publication of JPH0213373B2 publication Critical patent/JPH0213373B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Recording Or Reproduction (AREA)
JP12839682A 1982-07-22 1982-07-22 光デイスクインデツクスマ−ク検出装置 Granted JPS5919242A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12839682A JPS5919242A (ja) 1982-07-22 1982-07-22 光デイスクインデツクスマ−ク検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12839682A JPS5919242A (ja) 1982-07-22 1982-07-22 光デイスクインデツクスマ−ク検出装置

Publications (2)

Publication Number Publication Date
JPS5919242A JPS5919242A (ja) 1984-01-31
JPH0213373B2 true JPH0213373B2 (cs) 1990-04-04

Family

ID=14983765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12839682A Granted JPS5919242A (ja) 1982-07-22 1982-07-22 光デイスクインデツクスマ−ク検出装置

Country Status (1)

Country Link
JP (1) JPS5919242A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107539A (ja) * 1984-10-31 1986-05-26 Hitachi Ltd 光学デイスク装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54138606U (cs) * 1978-03-20 1979-09-26

Also Published As

Publication number Publication date
JPS5919242A (ja) 1984-01-31

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