JPS648530A - Magneto-optical recording and reproducing device - Google Patents

Magneto-optical recording and reproducing device

Info

Publication number
JPS648530A
JPS648530A JP16415587A JP16415587A JPS648530A JP S648530 A JPS648530 A JP S648530A JP 16415587 A JP16415587 A JP 16415587A JP 16415587 A JP16415587 A JP 16415587A JP S648530 A JPS648530 A JP S648530A
Authority
JP
Japan
Prior art keywords
recording
magneto
read
optical
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
JP16415587A
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 JP16415587A priority Critical patent/JPS648530A/en
Publication of JPS648530A publication Critical patent/JPS648530A/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 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 an erasing operation by executing the shifting of an external part impressed magnetic field, the selection of the presence or absence of the delay of a recording data pulse and the waveform conversion of the recording 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 structure is simplified and the number of parts is reduced as well.
JP16415587A 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device Pending JPS648530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16415587A JPS648530A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16415587A JPS648530A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS648530A true JPS648530A (en) 1989-01-12

Family

ID=15787784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16415587A Pending JPS648530A (en) 1987-07-01 1987-07-01 Magneto-optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS648530A (en)

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