Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-11-06
1989-08-22
Shepperd, John W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
H04N 504
Patent
active
048601012
ABSTRACT:
A system for distributing a master synchronization signal to several cameras in a CCTV system. The master synchronization signal is distributed on the same coaxial cable over which the video from the cameras is transmitted. The video sync from one camera, designated the master camera is distributed to the remaining cameras, designated the slave cameras. The level of the master sync signal is altered from normal sync level so that it may be detected and reconstructed at the camera by a video sync detector.
REFERENCES:
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patent: 3691295 (1972-09-01), Fisk
patent: 3816658 (1974-06-01), Vidovic
patent: 4333103 (1982-06-01), Koiwa et al.
patent: 4603352 (1986-07-01), Kaneta et al.
patent: 4670786 (1987-06-01), Ricciardi
Gao Shi-Yang
Pshtissky Yacov A.
Shepperd John W.
Vicon Industries, Inc.
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