Multiple FM-video signal transmission through optical fiber for use in security

Author

Mochizuki, Hitoshi ; Ikeda, Hiroaki ; Yoshida, Hirofumi ; Shinohara, Shigenobu

Author_Institution

Shizuoka Univ., Hamamatsu, Japan

fYear

1993

fDate

16-18 Aug 1993

Firstpage

1263

Abstract

Described is a dual FM video signal transmission system with an optical fiber for use in monitoring pictures for security purpose. Each video signal from each video camera is modulated by the FM scheme actualized by using a VCO operating at 30 MHz or 50 MHz, and the modulated RF video signal is sent to the optical fiber through the electrical-to-optical converter consisting of an LED at 850 nm. The optical FM video signal is received by using the optical-to-electrical converter. Each received FM video signal is demodulated by using a PLL to reproduce the video signal. The camera mount attitude for one of a pair of video cameras can be adjusted by the optical control signal issued from the monitoring site

Keywords

closed circuit television; frequency modulation; optical fibre communication; optical fibres; optical modulation; surveillance; video cameras; video signals; 30 MHz; 50 MHz; 850 nm; LED; PLL; VCO; camera mount attitude; electrical-to-optical converter; modulated RF video signal; monitoring site; multiple FM-video signal transmission; optical control signal; optical fiber; optical-to-electrical converter; picture monitoring; security; video camera; Cameras; Light emitting diodes; Monitoring; Optical fibers; Optical modulation; Phase locked loops; RF signals; Radio frequency; Security; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on

Conference_Location

Detroit, MI

Print_ISBN

0-7803-1760-2

Type

conf

DOI

10.1109/MWSCAS.1993.343328

Filename

343328