Satellite communications multi-point video transmit system

Details Satellite communications multi-point video transmit system Satellite communications multi-point video transmit system

1993-04-02

1996-09-10

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

348 15, 348 16, H04N 714

Patent

active

055554431

ABSTRACT:
A satellite communications multi-point video transmit system is provided which employs a satellite link and a hybrid system of a terrestrial line and is economical. Further, a system configuration is provided for matching a view point of a speaker to a camera. The multi-point video transmit system includes a transmission path composed of a satellite link for transmitting a video signal from a center station and a terrestrial line for transmitting a video signal from a remote station. In the center station, the image from the remote station is synthesized with the image of the center station and the synthesized image is transmitted. The center station and remote further may have prompter cameras for matching the directions of view of speakers to their cameras.

REFERENCES:
patent: 4360827 (1982-11-01), Braun
patent: 5003532 (1991-03-01), Ashida et al.
patent: 5194955 (1993-03-01), Yoneta et al.
"Mitsubishi Rolls to the Forefront of Videoconferencing" Mitsubishi Electronics, Inc Nov. 1990.
NEC Research and Development; No. 96, Mar. 1990, Tokyo, Japan pp. 13-29 XP136294 'C&C Systems Infrastructure.
IEEE Infocom '87, Apr. 1987, San Francisco, Californis pp. 554-549.
Patent Abstracts of Japan, vol. 10, No. 236, 15 Aug. 1986, JP-A-61 069 288.
Commutation et Transmission, No. 1, Sep. 1987, Paris FR pp. 25-40.
EP-A-0 353 945, American Telephone and Telegraph Company, 7 Feb. 1990.

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