Two way communication system

Details Two way communication system Two way communication system

1988-01-26

1990-09-18

Safourek, Benedict V.

Telecommunications

Interference signal transmission

358 86, 34082508, H04H 106

Patent

active

049583816

ABSTRACT:
An information transmitting system capable of two way communication, suitable for use in transmitting information signals between a central control unit and a plurality of terminal apparatus units. Each terminal apparatus unit may be located at a different passenger seat in an aircraft, a train, a bus, or the like. The signals transmitted from each terminal apparatus to the central control unit are transmitted by way of two channels. In one operating mode, one channel is used as a random access channel, and the other is used as a polling channel. When polling transmission is not effected, the polling channel is used as a second random access channel, so that the system may efficiently transmit many information signals on two random access channels.

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