Data modem with adaptive synchronized speed change

Details Data modem with adaptive synchronized speed change Data modem with adaptive synchronized speed change

H - Electricity

04

B

340/71

H04B 1/38 (2006.01) H04L 1/00 (2006.01)

Patent

CA 1268225

ABSTRACT A method for changing the data transmission rates in a synchronous data communication system including a first modem and a second modem coupled together through a transmission channel, the transmission channel including a first path for transmissions from the first modem to the second modem and a second path for transmission from the second modem to the first modem, includes the steps of determining, at the first modem, that the second path of the transmission channel is adequately high in quality to support an increase in transmission rate. Next it is determined, at the second modem, that the first path of the transmission channel is adequately high in quality to support an increase in transmission rate. A training sequence is then transmitted at an increased transmission rate from the second modem to the first modem. Next, a training sequence is transmitted at the increased transmission rate from the first modem to the second modem.

536026

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