Patent ID: 8045057

Claim:
A synchronization detector of a video signal processor comprising: a line buffer that sequentially stores a digital video signal corresponding to an input analog video signal, unit analog video signal; a parameter extraction unit that continuously extracts horizontal synchronization parameters from the digital video signal stored line by line and that continuously extracts vertical synchronization parameters from a portion of the digital video signal stored line by line; a synchronization detection unit that generates horizontal and vertical synchronization signals of the input analog video signal using time information related to local minimum values of the horizontal synchronization parameters and time information related to local minimum values of the vertical synchronization parameters; and a video signal processing unit that converts the input analog video signal into a digital video signal to conform the input analog video signal to a standard level of a video signal processed in the video signal processor and that removes a color component from the digital video signal to output a filter output signal including a luminance signal and a synchronization signal, the filter output signal corresponding to the digital video signal.