Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1984-11-21
1988-08-30
Cardillo, Raymond F.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 32, 369 58, G11B 700, G11B 7013
Patent
active
047681810
ABSTRACT:
An optical information recording and reproducing apparatus for recording and reproducing information on and from an optical recording disk having an optically detectable guide track divided into a plurality of sectors is disclosed. When a sector to or from which a data is to be recorded or reproduced is a defective sector or a non-use sector because of updating, a special pattern signal is recorded on the defective sector or the non-use sector, and if the recorded special pattern signal is detected in the reproduction cycle, that sector is determined as a defective or non-use sector and recording or reproducing on or from that sector is inhibited.
REFERENCES:
patent: 4145758 (1979-03-01), Drexler et al.
patent: 4214280 (1980-07-01), Halfhill et al.
patent: 4433403 (1984-02-01), Baba et al.
patent: 4545044 (1985-10-01), Satoh et al.
patent: 4546462 (1985-10-01), Koishi et al.
European Search Report No. 84 11 4179, (Oct. 14, 1987).
R. McFarlane, "Digital Optical Recorders at 5 Mbit/s Data Rate, Optical Engineering, Sep./Oct. 1982, vol. 21, No. 5.
Seisakusho K. K. et al., "Optical Recording and Reproducing Disk", vol. 6, No. (P-128)(1007), Jul. 15, 1982.
Sangyo K. K. et al., "Signal Recording and Reproducing System", vol. 6, No. 27 (P-102)(903), Feb. 17, 1982.
Ichinose Makoto
Kuroki Yuzuru
Satoh Isao
Sugimura Tatuo
Cardillo Raymond F.
Matsushita Electric - Industrial Co., Ltd.
Tomassini James E.
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