Adaptive operation type low noise television system

Details Adaptive operation type low noise television system Adaptive operation type low noise television system

1990-11-20

1993-07-06

Chiu, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358166, 358340, H04N 5208

Patent

active

052259102

ABSTRACT:
A cooperative adaptive low noise television system provides that, prior to transmission, the composite video is separated into chroma and luminance components. The luminance signal is adaptively pre-emphasized, with the amount of pre-emphasis being determined by the luminance transitions level, so that small transitions have more pre-emphasis than large ones. In the receiver, a received luminence signal is submitted to adaptive deemphasis in order to precisely cancel the adaptive pre-emphasis provided prior to transmission, thus reducing transmission noise while restituting a luminance signal free of pre-shoot, over-shoot or resolution losses.

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