Automatic peaking circuit

Details Automatic peaking circuit Automatic peaking circuit

H - Electricity

04

N

350/93

H04N 5/14 (2006.01)

Patent

CA 1092702

ABSTRACT OF THE DISCLOSURE An apparatus for automatically restoring the loss of high frequency components in the luminance signal of a television receiver is disclosed. The luminance signal is continuously sampled and a signal representing the high frequency content in the luminance signal is used to alter the frequency characteristics of the luminance signal path so as to maintain the frequency spectrum of the luminance signal substantially constant. Additionally, the frequency alteration of the luminance signal path is made responsive to the dynamic level of the video signal to provide increased peaking in the gray picture areas relative to the higher level whites. The system also functions to reduce the upper video spectrum noise level.

290327

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