Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1986-01-14
1988-03-08
Cardillo, Raymond F.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, 369 47, G11B 1100, G11B 15087
Patent
active
047302895
ABSTRACT:
A magnetic-optical disc memory system wherein header information items which include sector marks indicating initial positions of sectors, track Nos., and sector Nos. are previously provided on a magnetic-optical disc in the form of embossed pits and wherein data information items are written in the form of magnetic signals in data areas other than the header areas. Photodetectors detect the header information and the data. The operation of switching outputs from the photodetectors is controlled in accordance with a timing based on the point of time at which a sector mark signal has been detected from the output of the photodetector which detects the header area.
REFERENCES:
patent: 4001883 (1977-01-01), Strout et al.
patent: 4229808 (1980-10-01), Hui
patent: 4279004 (1981-07-01), Yamashita et al.
patent: 4310861 (1982-01-01), Kashio
patent: 4367497 (1983-01-01), Jenkins
patent: 4443870 (1984-04-01), Hazel et al.
patent: 4466026 (1984-08-01), Miura et al.
patent: 4535439 (1985-08-01), Satoh et al.
Kaku Toshimitsu
Saitoh Atsushi
Cardillo Raymond F.
Hitachi , Ltd.
Nguyen Hoa T.
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