Filter device

Details Filter device Filter device

2006-06-13

2006-06-13

Hsia, Sherrie (Department: 2614)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S607000, C348S620000, C348S670000

Reexamination Certificate

active

07061548

ABSTRACT:
A filter device (1) includes a main filter unit (10), such as a2-D comb filter, implemented in hardware, with an input for receiving a video signal (Φ) and an output for providing a filtered video signal (Φ1), a controllable temporal noise reduction unit (20) receiving the filtered video signal (Φ1) from the main filter unit (10), to perform a noise reduction operation on the filtered video signal (Φ1), and a unit (14, 30, 40) for detecting a very low amount of motion in a video image of the filtered video signal (Φ1) and for controlling the controllable temporal noise reduction unit (20) on the basis of the detected very low amount of motion, so as to enable the filter device (1) to reduce cross-luminance and/or cross-color as well when only a very low amount of motion is present in the signal.

REFERENCES:
patent: 5990978 (1999-11-01), Kim et al.
patent: 2-29188 (1990-01-01), None
patent: 4-222174 (1992-08-01), None
patent: 4-222174 (1992-08-01), None
patent: 6-189335 (1994-07-01), None
patent: 07075125 (1995-03-01), None

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