Television noise reduction IC

被引：16

作者：

de Haan, G ^{[1
]}

Kwaaitaal-Spassova, TG ^{[1
]}

Larragy, MM ^{[1
]}

Ojo, OA ^{[1
]}

Schutten, RJ ^{[1
]}

机构：

[1] Philips Semicond, Eindhoven, Netherlands

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 1998年 / 44卷 / 01期

关键词：

D O I：

10.1109/30.663741

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A noise reduction IC1 for consumer television has been designed. The IC contains a spatial filter for Gaussian noise and a temporal filter for clamp noise. To reduce clamp noise, the average value of the pixels in a line-segment are filtered rather than individual pixels. This reduces the cost of the temporal filter significantly, enabling the use of embedded memory. Analog interfaces are provided, as well as a line-locked clock generator. The chip includes a noise level estimator for optimal filtering under varying reception conditions. The average gain of the spatial filter is around 3 dB, whereas the temporal filter yields up to 8 dB improvement on clamp noise.

引用

页码：143 / 154

页数：12

共 10 条

[1]

DEHAAN G, 1995, IEEE 1995 INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS - DIGEST OF TECHNICAL PAPERS, P390

[2]

DEHAAN G, 1994, P INT WORKSH HDTV 94

[3]

DREWERY J, 1984, 19847 BBC RD

[4] NOISE-REDUCTION IN IMAGE SEQUENCES USING MOTION-COMPENSATED TEMPORAL FILTERING [J].