H - Electricity – 04 – N
Patent
H - Electricity
04
N
328/174, 350/41
H04N 5/14 (2006.01) H04N 5/208 (2006.01)
Patent
CA 1055575
Abstract of the Disclosure A system of shortening transition time of tran- sitions occurring in video signals is disclosed which includes circuitry for multiplying a function of the full wave rectified first differential of the input video signal by a function of the second differential of the input video signal and then adding the waveform resulting from such a product to the properly delayed input signal to provide a crispened output video signal. The system may be provided to crispen the luminance and chroma sig- nals of a color television video signal. A system for shortening transitions of low bandwidth chroma information with higher bandwidth luminance information is also dis- closed.
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