Video phone unit

Details Video phone unit Video phone unit

1991-04-04

1993-03-02

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 54, 358 85, H04N 142, H04N 714

Patent

active

051916010

ABSTRACT:
A video phone unit comprising a decoder for expanding a received picture transmitted from the other party, a television camera for photographing a subject for producing a photographed picture on one party side, a hook for detecting whether the camera is immobile or mobile and generating either a first detecting signal indicating that the hook is in a mobile state or a second detecting signal indicating that the hook is immobile, a changeover switch for selecting either the received picture expanded at the decoder or the photographed picture taken at the camera after receiving the first or second detecting signal provided from the hook, a display for displaying one picture selected at the changeover switch, and a coder for compressing and transmitting the photographed picture provided from the camera to the other party.

REFERENCES:
patent: 4258387 (1981-03-01), Lemelson et al.
patent: 4330797 (1982-05-01), Yokokawa et al.
patent: 4856045 (1989-08-01), Hoshina
patent: 4928300 (1990-05-01), Ogawa et al.
patent: 5036390 (1991-07-01), Masunaga
Toshiba Newsletter, No. 316, Toshiba Corporation, Japan, Nov. 1988.

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