JPS6482369A - Card-shaped optical memory recording/reproducing device - Google Patents

Card-shaped optical memory recording/reproducing device

Info

Publication number
JPS6482369A
JPS6482369A JP23734787A JP23734787A JPS6482369A JP S6482369 A JPS6482369 A JP S6482369A JP 23734787 A JP23734787 A JP 23734787A JP 23734787 A JP23734787 A JP 23734787A JP S6482369 A JPS6482369 A JP S6482369A
Authority
JP
Japan
Prior art keywords
recording
synchronization signal
tracks
track
card
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
JP23734787A
Other languages
Japanese (ja)
Inventor
Masahiko Tanaka
Isao Hoshino
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
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 filed Critical Toshiba Corp
Priority to JP23734787A priority Critical patent/JPS6482369A/en
Publication of JPS6482369A publication Critical patent/JPS6482369A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To attain demodulation with a single synchronization signal separating circuit even when many tracks are simultaneously reproduced by recording all tracks based on a single synchronization signal. CONSTITUTION:When information is record, by the synchronization signal obtained by using means to reproduce a recording pit which is already recorded, and a means 3 to detect the synchronization signal from the reproductive signal, the timing of the recording is obtained, and the new information is recorded. That is, at the time of recording, since the recording is performed in synchronization with the recording pit on a track 11 which is already recorded, the recording pit column 13 on all recorded tracks 11 is synchronized with a single synchronization signal. Consequently, when plural tracks 11 are simultaneously reproduced, the information on the other track can be reproduced by the synchronization signal obtained by the reproduction of the recording pit column 13 on a single track 11. Thus, when the number of the tracks to be simultaneously reproduced is increased, it is attained by one synchronization signal detecting circuit.
JP23734787A 1987-09-24 1987-09-24 Card-shaped optical memory recording/reproducing device Pending JPS6482369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23734787A JPS6482369A (en) 1987-09-24 1987-09-24 Card-shaped optical memory recording/reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23734787A JPS6482369A (en) 1987-09-24 1987-09-24 Card-shaped optical memory recording/reproducing device

Publications (1)

Publication Number Publication Date
JPS6482369A true JPS6482369A (en) 1989-03-28

Family

ID=17014043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23734787A Pending JPS6482369A (en) 1987-09-24 1987-09-24 Card-shaped optical memory recording/reproducing device

Country Status (1)

Country Link
JP (1) JPS6482369A (en)

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