A VLSI median filter for impulse noise elimination in composite or component TV signals

Author

Christopher, Lauren A. ; Mayweather, William T., III ; Perlman, Stuart S.

Author_Institution

David Sarnoff Res. Center, Princeton, NJ, USA

Volume

34

Issue

1

fYear

1988

fDate

2/1/1988 12:00:00 AM

Firstpage

262

Lastpage

267

Abstract

A VLSI median filter with novel masking modes and adaptive threshold control is described. The 16 masking modes select 1, 3, 5 or 9 pixels of a 5×3 pixel field for filtering. This feature makes it possible to median-filter NTSC composite video (baseband) or component R, G, and B signals. The input threshold value and the SWAP signal (indicating substitution of the median value) can be used together to adapt transmission path conditions. The circuit removes impulsive noise caused by FM-carrier-to-noise degradation, common in cable and satellite TV systems. The filter is applicable to other impulse noise sources created by auto engines and household appliances, and is also generally useful in image and signal processing tasks

Keywords

CMOS integrated circuits; VLSI; digital filters; interference suppression; video signals; CMOS; FM-carrier-to-noise degradation; NTSC composite video; RGB signals; VLSI median filter; adaptive threshold control; auto engines; baseband; cable TV; component TV signals; composite TV signals; digital filters; household appliances; image processing; impulse noise elimination; impulse noise sources; masking modes; satellite TV systems; signal processing; Adaptive control; Adaptive filters; Baseband; Cable TV; Circuit noise; Degradation; Filtering; Programmable control; Satellite broadcasting; Very large scale integration;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.75377

Filename

75377