Optical information storage apparatus

Details Optical information storage apparatus Optical information storage apparatus

1987-12-28

1989-04-25

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Erase

365127, G11C 1300

Patent

active

048254193

ABSTRACT:
In an optical information storage apparatus including an optical information storing medium having a retrieval index storing area and an information storing area, the apparatus comprises an optical head for recording and reading information on and from the optical information storing medium and a signal generator for generating a delete signal to th eoptical head in order to directly or perfectly delete (destroy) information recorded on the information area of the storing medium, in addition to the indirect deletion of a retrieval index. Further, the above direct and indirect deletions can be selected by the operator. The above apparatus is useful in particular to delete confidential documents stored in a picture information filing system, for instance.

REFERENCES:
patent: 4115768 (1978-09-01), Eggenberger et al.
patent: 4485411 (1984-11-01), Yamamoto

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