Television aperture correction system having gateable coring...

Details Television aperture correction system having gateable coring... Television aperture correction system having gateable coring...

H - Electricity

04

N

350/56, 350/81

H04N 5/21 (2006.01) H04N 5/208 (2006.01)

Patent

CA 1044798

ABSTRACT OF THE DISCLOSURE An aperture correction system employing a tapped delay line includes an integral detection/gating circuit, whereby the combination generates an improved video detail signal by removing the objectionable noise and low amplitude components which are emphasized during the aperture cor- rection process, while retaining the original shape of the high frequency video detail transitions as enhanced by the aperture correction process. The objectionable noise can- cellation is provided by selectively gating the aperture correction signal via the detection/gating circuit in response to a selected gating waveform provided from the video detail signal itself. The detection/gating circuit may be selectively disabled to cause severe attenuation of the waveform at selected low and high frequencies outside the passband of the system. - 2 -

249787

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