JPS648529A - Magneto-optical recording and reproducing device - Google Patents

Magneto-optical recording and reproducing device

Info

Publication number
JPS648529A
JPS648529A JP16415487A JP16415487A JPS648529A JP S648529 A JPS648529 A JP S648529A JP 16415487 A JP16415487 A JP 16415487A JP 16415487 A JP16415487 A JP 16415487A JP S648529 A JPS648529 A JP S648529A
Authority
JP
Japan
Prior art keywords
recording
magneto
reproducing
read
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.)
Pending
Application number
JP16415487A
Other languages
Japanese (ja)
Inventor
Seiichi Iino
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP16415487A priority Critical patent/JPS648529A/en
Publication of JPS648529A publication Critical patent/JPS648529A/en
Pending legal-status Critical Current

Links

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To simplify a structure and to curtail the number of parts by overwriting on a magneto-optical type recording medium by one optical pickup only. CONSTITUTION:The data control zone 35 on a magneto-optical recording medium is read to know each sector recording method corresponding to the structure of a recording filter. A preformat part 31 is then read and in case of being located at a correct address (sector) position, the shifting of an external part impressed magnetic field and the selection of the presence or absence of the delay in recording data pulse are executed at recording time according to the information of a previously read data control zone 35, and at the reproducing time an overwriting can be done without an erasing operation by executing only the selection of the presence or absence in the delay of a reproducing data pulse and the waveform shaping. Since the recording and reproducing of an information is enabled at real time without an erasing operation by only one optical pickup, the structure is simplified and the number of parts is reduced as well.
JP16415487A 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device Pending JPS648529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16415487A JPS648529A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16415487A JPS648529A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS648529A true JPS648529A (en) 1989-01-12

Family

ID=15787764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16415487A Pending JPS648529A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS648529A (en)

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