2013年10月9日星期三

Nonlinear distortion of the video signal

Signal distortion caused in the transmission signal itself to be transmitted related to the amplitude ,20x4 lcd display this distortion , said nonlinear distortion between the input signal the output is not a simple linear relationship. Equation : U2 = K (U1) U1, the transfer function K (U1) is not only a function of frequency or time , and is a function of the input signal .
Nonlinear distortion caused by the nonlinear components , and their effect on the parameters with which the signal level is changed ( by the size of the impact signal level ) . Transmission system nonlinear dynamic range and signal related to a wide range of distortion from the signal components can be divided into the following:
· Luminance signal nonlinear distortion
· Chroma gain nonlinear distortion
· Chroma phase nonlinear distortion
· Chromaticity ,lcm module luminance intermodulation distortion
· Differential gain
· Differential phase distortion
And synchronization signal static nonlinear distortion
· Synchronous signal dynamic nonlinear distortion
6 line time waveform distortion
Reflecting the line frequency to 500KHz IF distortion , on behalf of the larger size of the image content changes in brightness in the horizontal direction , frequency distortion will cause the image horizontally ill , causing severe horizontal tail, somewhat similar to the RGBHV signals "LF response bad "fault.

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