Patent ID: 8387103

Claim:
A video server device for receiving video signals from a CCTV camera and providing power to the CCTV camera, the video server device comprising: video server internal circuitry for digitizing a video signal received from the CCTV camera, encoding the digitized video signal, and transmitting the encoded video signal to a networked device; a network connector comprising: a first wire pair for carrying a first data signal and a first power signal; and a second wire pair for carrying a second data signal and a second power signal; an interface circuit comprising: a first transformer for splitting direct current and data signals of the first wire pair; a second transformer for splitting direct current and data signals of the second wire pair; and a second DC/DC converter having a first input terminal electrically connected to a center-tap of the first transformer, a second input terminal electrically connected to a center-tap of the second transformer, and an output terminal for outputting second and third voltage sources to the video server internal circuitry for powering the video server internal circuitry, the second DC/DC converter receiving a first voltage source through the first input terminal and the second input terminal; a first DC/DC converter having a first input terminal electrically connected to a center-tap of the first transformer, a second input terminal electrically connected to a center-tap of the second transformer, and an output terminal for outputting a fourth voltage source; and an output power connector having an input terminal electrically connected to the output terminal of the first DC/DC converter for receiving the fourth voltage source, and an output terminal for providing the fourth voltage source to the CCTV camera.