Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2006-02-06
2010-02-23
Natnael, Paulos M (Department: 2622)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
C375S240290
Reexamination Certificate
active
07667776
ABSTRACT:
A noise level estimation module includes a pixel block selection module for selecting a plurality of selected pixel blocks over a set of K fields of a video signal, each of the plurality of selected pixel blocks containing a plurality of pixels having corresponding pixel values. A difference calculation module calculates a block difference for each of the plurality of selected pixel blocks based on a pixel difference between the pixel value for each of the plurality of pixels and a pixel value for a corresponding pixel in an adjacent field. A signal generator generates a noise level estimation signal based on a subset of M block differences for the plurality of pixel blocks, wherein M is greater than one.
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Li Xinghai (Billy)
Yeh Chun-Chin (David)
Zhao Xu Gang (Wilf)
Garlick & Harrison & Markison
Natnael Paulos M
Stuckman Bruce E.
VIXS Systems, Inc.
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