Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening
Reexamination Certificate
2008-06-17
2008-06-17
Kostak, Victor R. (Department: 2622)
Television
Image signal processing circuitry specific to television
Combined noise reduction and transition sharpening
C382S266000
Reexamination Certificate
active
07388621
ABSTRACT:
Image processing methods and systems for noise reduction and edge enhancement. A variation detector is provided to evaluate measures of edge existence in a plurality of predetermined directions within pixels of a video signal, and determine a control signal according to a level of variation on the measures of edge existence. A noise reduction circuit and edge enhancement circuit filter and edge enhance the video signal, respectively, according to the control signal.
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CN Office Action mailed Mar. 30, 2007.
Kostak Victor R.
Mediatek Inc.
Thomas Kayden Horstemeyer & Risley
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