Control device for a facsimile apparatus

Details Control device for a facsimile apparatus Control device for a facsimile apparatus

1995-11-29

1997-09-16

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

358434, 358468, 379 9326, H04M 1100, H04N 132

Patent

active

056688580

ABSTRACT:
In a facsimile apparatus capable of executing automatic call termination on detecting a terminating signal, a control device has a frequency detection circuit and a frequency detection control circuit. The frequency detection circuit detects a terminating signal of, e.g., 1300 Hz by monitoring not only the frequency of 1300 Hz but also other frequencies. The frequency detection control circuit accurately determine, based on the output of the frequency detection circuit, whether an input from a network is the terminating signal of 1300 Hz or whether it is noise containing a 1300 Hz component.

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