Patent ID: 8913881

Claim:
A DVR having a source recognition automatic switched image receiving apparatus, comprising: a path switching unit configured to receive an image signal not determined whether it is a SD signal or a HD-SDI signal, transmit an initial path to a HD-SDI signal compensating unit, the initial path designated under the presumption that the image signal is the HD-SDI signal, and switch the path to a SD analog decoder if it is determined that the image signal is the SD signal; a HD-SDI signal compensating unit configured to measure a loss of the image signal and automatically adjust a gain of the image signal to restore an attenuation of the image signal under the presumption that the image signal input from the path switching unit is the HD-SDI signal; a signal detecting unit configured to receive the image signal of less than one initial frame from the HD-SDI signal compensating unit, with the kind of the image signal unknown, detect whether the image signal is the HD-SDI signal or the SD signal according to a preset criterion, and provide the kind of the image signal to the path switching unit; a receiver configured to parallelize and decode the image signal input from the HD-SDI signal compensating unit; a SD analog decoder configured to decode the image signal input from the path switching unit, with the image signal determined as the SD signal; and an image processing unit configured to output an image decoded by the receiver or the SD analog decoder, wherein the signal detecting unit receives the image signal between the HD-SDI signal compensating unit and the receiver and detects the kind of the image signal.