Information communication system

Details Information communication system Information communication system

1985-06-25

1987-11-03

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 3, 370122, 370 691, 455615, H04J 102

Patent

active

047047151

ABSTRACT:
In this information transmission system, a PCM encoder is provided for time-division multiplexing multichannel audio signals and a digital character information signal to generate a time-division multiplexed, or TDM, information signal. The TDM information signal is angle-modulated by the modulator to generate an angle-modulated information signal. This signal is supplied to a frequency-division multiplexer, which multiplexes the angle-modulated information signal and an image signal so as to generate a frequency-division multiplexed, or FDM, information signal which is adapted to be supplied to a certain subscriber.

REFERENCES:
patent: 3655917 (1972-04-01), Levine
patent: 3894177 (1975-07-01), Howell et al.
patent: 4075429 (1978-02-01), Takahata et al.
patent: 4382266 (1983-05-01), Panzer
patent: 4545048 (1985-10-01), Hauk et al.
ECOC 83-9th European Conference on Optical Communication, pp. 335-338, Fiber Optic Subscriber Systems for a Trial Broadband Switching Network; Yoichi Nagata and Tokuhiro Kitami; 1983.
IEEE Trans. Broadcasting, vol. BC-28, No. 4, pp. 172-175, Transmission System for the Television Broadcasting Satellite; Takehiro Izumi, Aogu Matsumae; Dec. 1982.

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