| 摘要 |
PURPOSE: A DVR(Digital Video Recorder) system having an enhanced security function is provided to transceive a digital control signal and an analog image signal between a DRV and an input/output unit by supporting connection between the DVR and the input/output unit with a LAN(Local Area Network) cable. CONSTITUTION: A signal processor(100) generates each differential signal for an analog RGB signal of a DVR(10). The signal processor adds a sync signal of the DVR to the differential signal. The signal processor transceives a control signal between the DVR and an input/output unit(20) through a LAN cable(300). A monitoring relay unit(200) is connected with the input/output unit. The monitoring relay unit receives the differential signal through the LAN cable. The monitoring relay unit separates the RGB signal from the sync signal. [Reference numerals] (100) Signal processor; (20) Input/output unit; (200) Monitoring relay unit |
