JPS5919242A - 光デイスクインデツクスマ−ク検出装置 - Google Patents

光デイスクインデツクスマ−ク検出装置

Info

Publication number
JPS5919242A
JPS5919242A JP57128396A JP12839682A JPS5919242A JP S5919242 A JPS5919242 A JP S5919242A JP 57128396 A JP57128396 A JP 57128396A JP 12839682 A JP12839682 A JP 12839682A JP S5919242 A JPS5919242 A JP S5919242A
Authority
JP
Japan
Prior art keywords
index mark
optical disk
index
output
optical
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.)
Granted
Application number
JP57128396A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0213373B2 (enrdf_load_stackoverflow
Inventor
Isao Sato
勲 佐藤
Tomio Yoshida
吉田　富夫
Shunji Ohara
俊次 大原
Kenji Koishi
健二 小石
Yuzuru Kuroki
譲 黒木
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 JP57128396A 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)
JP57128396A 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
JP57128396A 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
JP57128396A 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 true JPS5919242A (ja) 1984-01-31
JPH0213373B2 JPH0213373B2 (enrdf_load_stackoverflow) 1990-04-04

Family

ID=14983765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57128396A 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 (enrdf_load_stackoverflow)

Cited By (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

Citations (1)

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

Patent Citations (1)

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

Cited By (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

Also Published As

Publication number Publication date
JPH0213373B2 (enrdf_load_stackoverflow) 1990-04-04

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