Method and device for reducing color noise of chrominance signal in television picture
专利汇可以提供Method and device for reducing color noise of chrominance signal in television picture专利检索，专利查询，专利分析的服务。并且PURPOSE: To reduce color noise in a chrominance signal by applying a difference signal to a limiter before applying a recursive operation and a transversal signal processing operation to the difference signal in a digital filter.
CONSTITUTION: An R-Y signal in a chrominance signal FR is applied to a 1st subtrator 6a in the digital filter 1. In the subtractor 6a, an R-Y signal in a difference signal FD is formed from the R-Y component of the chrominance signal FR and a reference chrominance signal FK1. When the amplitude of the difference signal FD is small, the limiter 10 passes the difference signal FD without modulating it, and in the case of a large amplitude difference signal FD, the difference signal FD is attenuated. A modulated difference signal FDM is supplied to a 1st multiplier 30a through a 1st register 20a, supplied also to a 2nd multiplier 30b and multiplied by a correlation coefficient K2 and the multiplied result is stored in a register 20d. A correlation signal RK2 read out from the register 20d is supplied to a 3rd attenuator 6c to erase the noise component R of the R-Y component in the signal FR.
COPYRIGHT: (C)1992,JPO，下面是Method and device for reducing color noise of chrominance signal in television picture专利的具体信息内容。
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