Patent ID: 6373896
Filing Date: 2002-04-16
Classification: G10L,H04N

Abstract:
A device for coding an audio/video signal comprising:a first sample/hold unit for sampling/holding an analog video signal X(t) at a first sampling rate in response to a sampling control signal; a phase shifter for shifting a phase of the sampling control signal according to a variance of the video signal; a second sampling/hold unit for sampling/holding an analog video signal X(t) at a second sampling rate in response to the sampling control signal shifted by the phase shifter; a summer for summing the sampling data (+) from the first sample/hold unit and the sampling data (âˆ’) from the second sample/hold unit; a comparator for comparing the sampling data summed at the summer to an arbitrarily set critical value eT; a switching unit for selectively providing the sampling data either from the first sample/hold unit or from the second sample/hold unit in response to a signal from the comparator; a quantizing unit for quantizing the sampling data selectively provided by the switching unit; and, an encoding block for compressing a data from the quantizing unit, to provide an encoded data.