H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/28, 325/31
H04B 7/24 (2006.01) H04B 1/74 (2006.01)
Patent
CA 1249633
Abstract of the Disclosure In a digital radio communication system using at least two regular channel and two or more standby channels for transmitting a test signal therethrough in the standby condition thereby permitting the regular channel to be synchronously switched to one of the standby channels, the improvement wherein a channel switching system for monitoring the standby channels is provided at the receiving side of the digital communicaton system with: control signal generator means operating so that when two or more standby channels are in standby condition, it generates a control signal to designate them in turn, and when only one standby channel is in standby condition, it generates a control signal to designate the channel; synchronizing switching means for selectively outputting the test signal transmitted via each of the standby channels designated by the control signal; and standby channel monitoring means for detecting an output from the synchronizing switching means to monitor the communication quality of the standby channel placed in standby condition on the basis of the result detected.
524814
Funayama Kiyoshi
Morimoto Hideaki
Corporation Nec
Smart & Biggar
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