Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1993-03-03
1995-05-30
Hayes, Gail O.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 4433, 369 48, 369 53, G11B 700
Patent
active
054208386
ABSTRACT:
A disk recording and reproducing device records and reproduces information on and from a magneto-optical disk having 3 3 and there is TOC (Table of Contents) area. Additional information with respect to each piece of the information recorded in the information recording area is recorded in the TOC. The device includes operation keys, a TOC memory for storing read/write control information for desired pieces of information entered through the operation keys. There is an optical head and a magnetic coil for recording, in the TOC area, the contents stored in the TOC memory as additional information. A controller controls the read/write operation to the disk according to the read/write control information. With the arrangement, a user can recognize necessary/unnecessary information and defective parts in the disk, and therefore make effective use thereof as well as maintaining secrecy of the information.
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Deguchi Toshihisa
Ishikawa Toshio
Maeda Shigemi
Terashima Shigeo
Hayes Gail O.
Hazard Jennifer L.
Sharp Kabushiki Kaisha
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