Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-09-19
1990-12-11
George, Keith E.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358108, H04N 710, H04N 718
Patent
active
049774492
ABSTRACT:
A broadband (RF) system using frequency agile demodulators or frequency agile modulators for coupling video cameras at remote locations to one or more video monitors at a central location. In a first embodiment, video cameras at remote locations are provided with respective modulators for coupling the outputs of the video cameras to a broadband coaxial or fiber-optic cable which couples all of the camera outputs to the input of a frequency agile demodulator at the central location. The output of the demodulator is coupled to one or more video monitors for display of the video signals from the remote cameras. The demodulator at the central location may be set to any camera channel manually or under processor control. Each video monitor can then view the video signals from any remote video camera by selecting the appropriate channel at the demodulator at the central location. If more than one viewing monitor is desired, a second or third demodulator which is frequency agile, may be connected to the cable at any location along the cable. In another embodiment, the central location may be provided with one or more video monitors with each monitor having a fixed frequency demodulator associated with it. The remote video cameras are provided with frequency agile modulators which are commanded to the appropriate monitor channel under processor control. Each video monitor to view the video signal of any remote camera by remotely selecting and enabling the appropriate monitor channel at the remote frequency agile modulators.
REFERENCES:
patent: 4530084 (1985-07-01), Strebel et al.
patent: 4777526 (1988-10-01), Saitoh et al.
patent: 4814869 (1989-03-01), Oliver, Jr.
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