Facsimile apparatus

Details Facsimile apparatus Facsimile apparatus

1991-10-01

1994-09-20

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379 67, 379 97, 358434, 358438, H04M 1100

Patent

active

053496345

ABSTRACT:
A facsimile apparatus includes a facsimile communication section for executing facsimile communication, a calling tone signal detecting section for detecting a first signal in a frequency band corresponding to a frequency band of a calling tone signal, a speech signal detecting section for detecting a second signal in a frequency band outside the frequency band of the calling tone signal, and a control section for starting and activating the facsimile communication section to execute the facsimile communication when the calling tone signal detecting section detects the first signal but the speech signal detecting section does not detect the second signal.

REFERENCES:
patent: 4800439 (1989-01-01), Yoshino
patent: 4823375 (1989-04-01), Yoshida
patent: 4868865 (1989-09-01), Ogawa et al.
patent: 4908851 (1990-02-01), Kotani
patent: 5022071 (1991-06-01), Mozer et al.
patent: 5036534 (1991-07-01), Gural
patent: 5086455 (1992-02-01), Satomi et al.
patent: 5131026 (1992-07-01), Park
patent: 5146489 (1992-09-01), Telibasa

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