Device to automatically screen incoming telephone calls, determi

Details Device to automatically screen incoming telephone calls, determi Device to automatically screen incoming telephone calls, determi

1978-11-03

1981-05-05

Popek, Joseph A.

179 84C, H04M 1506

Patent

active

042660980

ABSTRACT:
A device which monitors information contained in incoming telephone calls, and which, when attached to or combined with the circuitry of a telephone receiver, will automatically hold and display the identity of the caller while allowing the telephone bell to be rung only at certain times and/or for certain callers. The caller's identity can be determined by the called party without personally answering the telephone and without revealing to the caller whether the called party is at home or not. It can be used to automatically screen incoming calls and prevent the reception of calls which are unwanted. Accordingly, it can be used to allow wanted calls to ring the telephone's bell and thus, for example, awaken the user at night, while preventing all unwanted calls from disturbing the called party.

REFERENCES:
patent: 3654396 (1972-04-01), Biezeveld
patent: 3686440 (1972-08-01), Kroeger
patent: 3784721 (1974-01-01), Kilby
patent: 4006316 (1977-02-01), Bolgiano

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