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AssigneeTechwell, Inc.
InventorsMark Fimoff, Khanh Lam, Dennis Mutzabaugh, David Ritter, Greg Tomezak
Estimating the term…
Systems and methods for controlling transmission of signals are described. A camera-side modem is configured to receive two signals from a video camera and to extract a received passband signal from a transmission line. A detector in the camera-side modem generates an alarm signal when disruption or loss of the received passband signal is identified. An enable signal is used to control transmission of at least one of the baseband video signal and the passband video signal. The passband signal may be identified by an estimate of mean square error in a quadrature amplitude demodulator, a measurement of reliability provided by a constellation detector, a measurement of reliability based on a sequence of frame synchronizations and/or an estimate of mean square error in an equalizer. The detector may monitor a gain factor in an automatic gain control module of the camera-side modern and/or a magnitude of the received passband signal.
A system for detecting signal disruption in a coaxial cable, wherein the signal disruption is detected by a modem that processes video signals, the video signals being representative of a sequence of images captured by a camera, and wherein the modem comprises:
A method for detecting signal disruption in a coaxial cable using a modem that processes video signals transmitted over the coaxial cable by a security camera, the method comprising:
A modem for processing signals received from a security camera, comprising:
Dependencies are inferred from the claim text.