Patent ID: 8848795
Filing Date: 2014-09-30
Classification: H04N

Abstract:
1. An apparatus for auto phase detection, for automatically detecting a target sampling phase for a video signal, the apparatus comprising: a phase decider, for generating a plurality of phase control signals; a sampling clock generator, coupled to the phase decider, for generating a plurality of sampling clock signals according to the phase control signals; an analog-to-digital converter (ADC), coupled to the sampling clock generator, for converting the video signal to a digital video signal according to the sampling clock signals; a phase detector, coupled to the ADC and the phase decider, for generating a plurality of phase detection results according to the digital video signal; and a motion detector, coupled to the ADC and the phase decider, for generating a motion detection result by detecting motion in the digital video signal; wherein the phase decider determines the target sampling phase from the phase control signals according to the phase detection results and the motion detection result, wherein the phase decider halts operation when the motion detection result indicates the existence of motion, wherein the phase detector is configured to generate a plurality of phase detection results according to a plurality of predetermined phases, and determine the target sampling phase from the predetermined phases; and wherein the phase detector is further configured to selectively update a current sampling phase as the target sampling phase according to the motion detection result.