A new noise reduction system for video camera

Author

Nakajima, Yukiko ; Hamasaki, Takeshi ; Nakayama, Masaaki ; Kitamura, Yoshinori

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

37

Issue

3

fYear

1991

fDate

8/1/1991 12:00:00 AM

Firstpage

213

Lastpage

219

Abstract

A novel noise reduction system developed to improve the sensitivity of video cameras is reported. The frequency resolution characteristics, feedback characteristics, and bit accuracies of the noise reduction circuit in which the field or frame difference signal is separated into frequency components were studied for improving the S/N (signal-to-noise ratio) of the color difference signal, and for optimizing its circuit construction. An S/N improvement as high as 9 dB at a permissible lagged image level is thus accomplished, and this is to be used to improve the sensitivity of home video cameras

Keywords

computerised picture processing; interference suppression; video cameras; bit accuracies; color difference signal; feedback characteristics; frequency resolution characteristics; home video cameras; noise reduction circuit; noise reduction system; sensitivity; signal processing system; signal-to-noise ratio; Cameras; Color; Colored noise; Constitution; Feedback circuits; Frequency conversion; Noise reduction; Power capacitors; Sampling methods; Signal processing;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.85516

Filename

85516