ADAPTIVE COMB FILTER COEFFICIENCE EXTRACTION CIRCUIT OF PUBLIC DATA BUS FOR HARDWARE REDUCTION

摘要

The present invention relates to an adaptive comb filter coefficient extraction circuit of a shared data path for hardware reduction capable of reducing the size of hardware by using a shared data path. Time division multiplexing for time division multiplexing by inputting color difference data, V color difference data, the U color difference data and the U color difference data delayed by a predetermined line of the V color difference data, and the color difference data output from the time division multiplexing unit A correlation calculation and determination unit for calculating cross correlation and comparing the correlation with a predetermined threshold and outputting the result, and a comb filter coefficient output for outputting comb filter coefficients according to the output value of the correlation calculation and determination unit. Negative and neighboring synonyms at the point of time when meaningless filter coefficients resulting from the combination of the current U correlation and the previous data V correlation. And simultaneously it generates a valid filter coefficients for the entire clock by interpolating using a filter coefficient, including interpolation and fading unit for soft and to have a gradual change in a sudden change of the filter coefficient may reduce the size of hardware.