Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-11-14
1990-07-24
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 86, 358181, 340734, H04N 718, H04N 5268, H04N 710
Patent
active
049438646
ABSTRACT:
A closed circuit television camera for a supervisory system includes a number of transmitting devices which generate video signals and are located at each of a number of different places to be observed, a television receiver which receives the video signals, and a switching device which selects one of the transmitting devices and connects the same to the television receiver. Each transmitting device includes a television camera having a specific code, a circuit for generating code signals and a circuit for generating composite signals. The receiver has a circuit for receiving the composite signals which also extracts the code signals from the composite signals and generates display signals to identify the television camera corresponding to the extracted code signals. Visual information corresponding to the display signals is displayed on a monitor.
REFERENCES:
patent: 4507683 (1985-03-01), Griesshaber et al.
patent: 4673974 (1987-06-01), Ito et al.
patent: 4774570 (1988-09-01), Araki
patent: 4779134 (1988-10-01), Mak
patent: 4831438 (1989-05-01), Bellman, Jr. et al.
patent: 4835613 (1989-05-01), Johnson
Elbex Video Ltd.
Peng John K.
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