Communication apparatus

Details Communication apparatus Communication apparatus

1994-02-22

1995-06-27

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

358400, H04M 1100

Patent

active

054286751

ABSTRACT:
A communication apparatus for carrying out a communication operation in accordance with a remote command from another communication apparatus sharing one line with the another communication apparatus comprises a communication unit, line switching unit for selectively connecting the line to the another communication apparatus or the communication unit a power supply for supplying a power to the another communication apparatus to form a current loop with the another communication apparatus, a detector for detecting a status of formation of the current loop of the another communication apparatus, and a control unit for carrying out the communication operation in accordance with the detection signal of the detector.

REFERENCES:
patent: 4646289 (1987-02-01), Tsiakas et al.
patent: 4773080 (1988-09-01), Nakajima et al.
patent: 4805210 (1989-02-01), Griffith, Jr.
patent: 4893331 (1990-01-01), Horiuchi et al.
patent: 4942600 (1990-07-01), Suzuki
patent: 5014296 (1991-05-01), Saigano
patent: 5022071 (1991-06-01), Mozer et al.
patent: 5027385 (1991-06-01), Nakagawa et al.
patent: 5093857 (1992-03-01), Yoshida et al.
patent: 5142567 (1992-08-01), Watanabe
patent: 5222126 (1993-06-01), Nishino
Pat. Abs. Jp. vol. 12, No. 474, Dec. 12, 1988 and JP-A-63191456.

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