Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1993-09-03
1995-04-25
Groody, James J.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
36472416, 36472405, G06F 1531
Patent
active
054103622
ABSTRACT:
A signal input in a raster scan format is entered into one-dimensional digital filters. An output of the one-dimensional digital filter is multiplied in a multiplier. Outputs of one-dimensional digital filters are provided to delay circuits to generate a time delay in a direction perpendicular to the raster scan direction. The output of the multiplier and the outputs of the delay circuits are added by adders. A one-dimensional digital filter of the vertical direction is decomposed in a manner more simple than in the horizontal direction to reduce delay time between input and output.
REFERENCES:
"The LU Decomposition Theorem and Its Implications to the Realization of Two-Dimensional Digital Filters" by C. L. Nikias et al., IEEE Transaction On ASSP vol. 33 No. 3, Jun. 1985.
Iwata Makoto
Mizuno Masayuki
Terada Hiroaki
Cohen Cheryl
Groody James J.
Mitsubishi Denki & Kabushiki Kaisha
Sharp Kabushiki Kaisha
Terada H.
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