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JPS648531A - Magneto-optical recording and reproducing device - Google Patents

Magneto-optical recording and reproducing device

Info

Publication number
JPS648531A
JPS648531A JP16415687A JP16415687A JPS648531A JP S648531 A JPS648531 A JP S648531A JP 16415687 A JP16415687 A JP 16415687A JP 16415687 A JP16415687 A JP 16415687A JP S648531 A JPS648531 A JP S648531A
Authority
JP
Japan
Prior art keywords
magneto
recording
read
optical recording
overwriting
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
JP16415687A
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 JP16415687A priority Critical patent/JPS648531A/en
Publication of JPS648531A publication Critical patent/JPS648531A/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 recording medium only by one optical pickup. CONSTITUTION:The data control zone 35 of on a magneto-optical recording medium is read to know each sector recording method corresponding to the composition of a recording file. A preformat part 31 is then read and in case of being located at a correct address (sector) position an overwriting can be done without the need for an erasing operation by executing the shifting of an external part impressed magnetic field, the selection in the delay of a recording data pulse and the selection in the discriminating direction of a reproducing data pulse according to the information of a previously read data control zone 35. Since the recording and reproducing of an information is enabled at real time without the need for erasing operation by only one optical pickup, the composition is simplified and the number of parts is reduced.
JP16415687A 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device Pending JPS648531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16415687A JPS648531A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16415687A JPS648531A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS648531A true JPS648531A (en) 1989-01-12

Family

ID=15787804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16415687A Pending JPS648531A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS648531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04190633A (en) * 1990-11-21 1992-07-09 Hitachi Ltd Method for operating inverter in parallel and apparatus thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04190633A (en) * 1990-11-21 1992-07-09 Hitachi Ltd Method for operating inverter in parallel and apparatus thereof

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