Patent ID: 8218081

Claim:
A video standard detector for determining a video standard corresponding to a baseband signal, comprising: a low pass filter (LPF) filtering the baseband signal; and a feature detector, coupled to the LPF, detecting vertical synchronization information of the baseband signal and horizontal synchronization information of the baseband signal using the output of the LPF, and determining the video standard corresponding to the baseband signal according to the vertical synchronization information and the horizontal synchronization information, wherein the LPF comprises a narrow band LPF filtering the baseband signal to output a narrow band signal to the feature detector, wherein the feature detector detects the vertical synchronization information using the narrow band signal; and a wide band LPF filtering the baseband signal to output a wide band signal to the feature detector unit, wherein the feature detector detects the horizontal synchronization information using the wide band signal, wherein the narrow band signal and the wide band signal jointly constitute the output of the LPF.