Patent ID: 7477285

Claim:
A device for implementing video surveillance on an existing coaxial network, wherein the existing coaxial network supports data transmitted over a first carrier signal, a second carrier signal and a plurality of other carrier signals, the device comprising: a data port for connecting to the existing coaxial network; a modulator for modulating first digital signals onto the first carrier signal, wherein at least some of said first digital signals representing sensory electrical signals, said modulator electrically coupled to the data port; a demodulator for demodulating second digital signals off the second carrier signal, said demodulator electrically coupled to the data port; a memory for storing sensory electrical signals as data; a video sensor for capturing image frames of a surveillance area and for converting said image frames to video sensory electrical signals; a motion detector for detecting motion in at least a portion of the surveillance area and issuing a motion indication; and a video processor for receiving the video sensory electrical signals representative of the image frames and determining which image frames to save in the memory based on receiving a motion indication.