Communication apparatus using telephone line

Details Communication apparatus using telephone line Communication apparatus using telephone line

1996-12-03

2000-12-19

Kuntz, Curtis A.

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

37910009, 358468, H04M 1100, H04N 132

Patent

active

061636002

ABSTRACT:
An object of the invention is to provide a communication apparatus which commonly uses a function circuit required both for a voice communication and an image communication so that the number of parts of the apparatus is reduced and the apparatus is realized at a low cost; therefore the communication apparatus 1 using a telephone line according to the invention includes a speech circuit 6 for use in a telephone set, wherein the speech circuit 6 is connected to the telephone line for selectively transmitting and receiving a voice signal and an image signal via the telephone line and responds to an output of an operation panel 7 for instructing a start of transmitting the voice signal and the image signal so that the telephone line L is closed by controlling a circuit control circuit 3 for closing and opening the telephone line thereby separating a modem 11 connected to the circuit control circuit 3 for transmitting and receiving an image signal via the telephone line L upon an instruction being given to start transmitting the voice signal while the telephone line L is closed by controlling the circuit control circuit 3 thereby separating a handset 4 connected to the circuit control circuit 3 for transmitting and receiving the voice signal via the telephone line upon an instruction being given to start transmitting an image signal.

REFERENCES:
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patent: 4901343 (1990-02-01), Yamaguchi
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patent: 5022071 (1991-06-01), Mozer et al.
patent: 5127046 (1992-06-01), Malm
patent: 5444770 (1995-08-01), Davis et al.
patent: 5481373 (1996-01-01), Ikeguchi et al.
patent: 5499287 (1996-03-01), Campbell et al.
patent: 5502760 (1996-03-01), Gilbert et al.
patent: 5610975 (1997-03-01), Tsuchida

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