Facsimile machine for receiving caller-ID information

Details Facsimile machine for receiving caller-ID information Facsimile machine for receiving caller-ID information

1996-05-28

1999-04-27

Coles, Edward L.

Facsimile and static presentation processing

Facsimile

Auxiliary signal

358440, 37910001, 379142, H04N 100

Patent

active

058985069

ABSTRACT:
A facsimile machine capable of receiving input of data from a switchboard over a telephone circuit during a silent interval between a first ring signal and a second ring signal, and including a network control unit NCU for detecting the first ring signal; a clock for starting measurement of a predetermined duration of time when the NCU detects the first ring signal and stopping measurement of the predetermined duration of time between an end of the data and a beginning of the second ring signal; and a CPU for causing the NCU to close a telephone circuit when the clock stops measurement of the predetermined duration of time.

REFERENCES:
patent: 4242539 (1980-12-01), Hashimoto
patent: 4551581 (1985-11-01), Doughty
patent: 4582956 (1986-04-01), Doughty
patent: 4584434 (1986-04-01), Hashimoto
patent: 5121423 (1992-06-01), Morihiro et al.
patent: 5315650 (1994-05-01), Smith et al.
patent: 5341411 (1994-08-01), Hashimoto
patent: 5517557 (1996-05-01), Tanaka

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