Protection system

Details Protection system Protection system

1987-10-02

1989-03-21

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

241 36, 340568, G08B 1300, B02C 2300

Patent

active

048147494

ABSTRACT:
An audio and/or video system for transferring information stored on a disc, tape or film which prevents unauthorized or unintentional use or disclosure to third parties of the information contained on the disc, tape of film. The disc, tape or film is contained within a cassette having structure for sensing intrusion into the cassette. The sensing structure triggers an abrasive or cutting device which destroys the information on the disc, tape or film when intrusion into the cassette is sensed.

REFERENCES:
patent: 4236463 (1980-12-01), Westcott
patent: 4479579 (1984-10-01), Miklos
patent: 4532566 (1985-07-01), Horimoto
patent: 4549658 (1985-10-01), Sfikas
patent: 4567983 (1986-02-01), Morris
patent: 4572369 (1986-02-01), Morris
patent: 4615490 (1986-10-01), Goldhammer
patent: 4664317 (1987-05-01), Morton

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