Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1981-03-10
1983-01-04
Griffin, Robert L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358185, 434323, 434351, 455 5, H04N 100
Patent
active
043674852
ABSTRACT:
A two-way microwave television system for linking a master or teaching station with a plurality of sub-station schools via a single microwave link is presented. The sub-station schools are located at dispersed school sites and function as relay stations to complete a network covering a geographical area of greater dimensions than could be achieved by the master station unassisted. A single duplex microwave channel is used to transmit a picture originating at the master station and special effects generators located at each of the sub-station school relay sites combine, through a special video switching network, responses from each sub-station school to form an integrated frame containing the response from each sub-station in a format which can be transmitted on a single channel carrier.
REFERENCES:
patent: 2668907 (1954-02-01), Evans
patent: 2907874 (1959-10-01), Halvorson
patent: 3606688 (1971-09-01), Zawels et al.
patent: 3665311 (1972-05-01), Gargini
patent: 4266242 (1981-05-01), McCoy
Publication McGraw-Hill Encyclopedia of Science and Technology, vol. B, Chapter entitled "Television Networks", pp. 480-484, (1971).
Coles Edward L.
Griffin Robert L.
Telecom Engineering, Inc.
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