Video signal noise reduction apparatus

Details Video signal noise reduction apparatus Video signal noise reduction apparatus

1985-09-30

1987-04-14

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 31, H04N 964, H04N 5213

Patent

active

046582851

ABSTRACT:
A recursive filter for noise reducing composite video signal separately processes the luminance and chrominance components of the composite signal but requires only a single frame of storage. Input composite video signal is separated into luminance and chrominance component signals. The component signals are coupled to separate signal recursion scaling/combining circuits. The outputs from the recursion circuits are summed in an adder to produce noise-reduced composite video signal which is applied to a frame delay element. The output of the delay element is applied to a chroma/luma separator which separates the luminance and chrominance components and applies them to the respective recursion circuits.

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