Title :
Optical-fiber multi-channel audio and video signal transmission system for use in clinical applications
Author :
Ikeda, Hiroaki ; Li, Jinzhu ; Morita, Koji ; Ikeda, Kazuyuki ; Tsuchiya, Etsuo ; Yoshida, Hirofumi
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
A multi-channel audio and video signal transmission system constructed by using optical fiber cables as signal transmission media is described. With this system up to four audio signal and up to four video signal channels can be used with a bidirectional operation-aid voice channel. The PFM (pulse frequency modulation) scheme was used to modulate the audio and video signals. The SNR of the video signal was above 55 dB. The differential gain and differential phase were under 3% and 3°, respectively. The SNR of the audio signal was 65 dB and the distortion factor was under 0.3%. The practical use of this system at a surgical center is described
Keywords :
biomedical engineering; optical fibres; optical links; surgery; voice communication; PFM; SNR; audio signal transmission; bidirectional operation-aid voice channel; clinical applications; differential gain; differential phase; distortion factor; multi-channel system; optical fiber cables; surgical center; video signal transmission; Bandwidth; Biomedical optical imaging; Frequency; Optical fibers; Optical modulation; Optical receivers; Optical transmitters; Pulse width modulation; Surgery; Watches;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271129
