Tone code identification system

Details Tone code identification system Tone code identification system

1989-07-27

1991-03-12

Wieder, Kenneth

Communications: electrical

Continuously variable indicating

With meter reading

340571, 3642225, G06F 300, H04M 300

Patent

active

049996215

ABSTRACT:
A tone code identification system identifies a stolen computer every time the same is turned on. Police, on recovering a stolen computer, can call a central registry and transmit the tone code to reveal the identity of the rightful owner.

REFERENCES:
patent: 3778781 (1973-02-01), Roth
patent: 4223830 (1980-09-01), Walton
patent: 4563680 (1986-01-01), Nakajima
patent: 4644345 (1987-02-01), Wycoff
patent: 4656463 (1987-04-01), Anders et al.

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