Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2005-09-06
2008-09-23
Lee, M. (Department: 2622)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
C348S618000, C382S260000
Reexamination Certificate
active
07428020
ABSTRACT:
The present invention provides a method of noise reduction applied in digital video signal processing according to the following steps. A video signal is received initially; after the adaptive spatial filtering, a basic signal is generated. The basic signal is then divided into a number of N bandwidth divisions of spatial domain signals. Each spatial domain signal is undergone a corresponding adaptive temporal filtering and a plurality of corresponding temporal filtered signals is generated. Each temporal filtered signal is undergone individual noise estimation, and a corresponding feedback signal is generated in order to control the corresponding adaptive temporal filtering. In the end, all temporal filtered signals are summed up to a processed video signal; where N is a natural number.
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patent: 6061100 (2000-05-01), Ward et al.
patent: 6181382 (2001-01-01), Kieu et al.
patent: 7145607 (2006-12-01), Hui
J.C. Patents
Lee M.
Novatek Microelectronics Corp.
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