Method and system for bidirectional data transmission

Details Method and system for bidirectional data transmission Method and system for bidirectional data transmission

1996-04-30

1999-04-27

Hsu, Alpus H.

Multiplex communications

Duplex

Communication over free space

370294, 370521, 370535, H04J 300, H04L 516

Patent

active

058986669

ABSTRACT:
A method of bidirectional data transmission with a single transmission line using a time-compression multiplexing method, which is configured to allow a downstream channel capacity to be higher than an upstream channel capacity. In a bidirectional communication system, a master unit and a slave unit exchange data alternately in the time-compression mode. The method, according to the present invention, sets a downstream data transmission time, tm, for data transmission from the master unit to the slave unit is set longer than an upstream data transmission time, ts, for the opposite direction. As a result, the downstream data rate (or the amount of data transferred in the downstream direction per unit time) becomes larger than the upstream data rate.

REFERENCES:
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patent: 4476558 (1984-10-01), Arnon
patent: 4525835 (1985-07-01), Vance et al.
patent: 4750169 (1988-06-01), Carse et al.
patent: 5001703 (1991-03-01), Johnson et al.
patent: 5347304 (1994-09-01), Moura et al.
patent: 5586121 (1996-12-01), Moura et al.

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