05128755 is referenced by 24 patents and cites 16 patents.

A wireless, real time video system provides a low power video transmitter wherein the base band video signal generated by the video camera directly modulates a radio frequency carrier signal to produce a very narrow band transmitter signal that is transmitted through a circularly polarized patch radiating antenna to a receiving antenna at a remote receiver site. The transmitted signal is picked up by the receiver antenna to be passed through a narrow band preselector filter to a low noise amplifier. The amplified signal is then applied to a mixer along with a fixed local oscillator frequency that is demodulated to reconstruct the original base band video signal for use in operating a video monitor or recorder connected by hard wired cable to the receiver unit. Both the transmitter and the receiver employ a phase locked loop and narrow ban filters to confine the transmitted signal and the receiver response within a very narrow frequency band to optimize the transmitter efficiency and prevent generation of and interference from extraneous signals.

Wireless real time video system and method of making same
Application Number
Publication Number
Application Date
July 25, 1990
Publication Date
July 7, 1992
Philip D Fancher
Channel Islands
Nilsson Robbins Dalgarn Berliner Carson & Wurst
Wireless Technology
H04N 7/18
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