| 摘要 |
A video acquirement apparatus to acquire a video signal of monitoring area, to convert the acquired video signal into a differential video signal and a network stream, and to transmit the converted signal to a repeater apparatus using a UTP cable. The repeater apparatus supplies power to the video acquirement apparatus using the UTP cable, and receives the differential video signal and the network stream from the video acquirement apparatus. If network condition is unsatisfactory, the repeater apparatus outputs the received differential video signal to a video recording apparatus using one UTP cable. The video recording apparatus converts the output differential video signal using one UTP cable into a general video signal, and variably amplifies and records the converted general video signal. |
