Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening
Reexamination Certificate
2011-06-28
2011-06-28
Kostak, Victor (Department: 2422)
Television
Image signal processing circuitry specific to television
Combined noise reduction and transition sharpening
C348S607000, C348S625000
Reexamination Certificate
active
07969510
ABSTRACT:
A video noise reducer divides a signal into spatial frequency bands and derives both recursively and non-recursively filtered signals for each band. Both signals are processed non-linearly. These signals are combined in ways that vary between the bands to provide a noise signal and a detail signal. A clean video signal with all noise removed is used in the recursive loop. The output signal includes detail enhancement and may have a subjectively pleasant amount of noise added back.
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Steinberg Avigdor
Weston Martin
Kostak Victor
Pearl Cohen Zedek Latzer LLP
Snell Limited
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