Ping-pong communication method and apparatus

摘要

An improved method and apparatus for achieving ping-pong communication over a single channel comprises a circuit (located at each communication station) which adjusts the transmission frequencies of two or more communicating stations such that each communicating station is transmitting at the same frequency as the other communicating stations. Additionally, the circuit provides a time delay between data receipt and data transmission at a given station such that data is not transmitted from the given station when data is being received by the given station. In the preferred embodiment cross coupled phase-lock loops are employed and the delay provided is such that a data pulse is transmitted half way between the receipt of two consecutive data pulses.