Patent ID: 8355687
Filing Date: 2013-01-15
Classification: H03G

Abstract:
1. A gain controller for controlling the gain of at least one amplifier in a receiver, the gain controller being arranged to, when the receiver is receiving a signal: during a first period of time of receiving said signal: repeatedly determine an indication of the strength of the received signal and adjust the gain of the at least one amplifier in dependence on each indication of signal strength; and receive a synchronisation detection signal, the synchronisation signal being generated by the receiver responsive to the receiver achieving synchronisation with the received signal, wherein the gain controller is responsive to the synchronisation detection signal to stop repeatedly determining the indications of signal strength and adjusting the gain of the at least one amplifier in dependence on each of those indications of signal strength; and following the expiry of the first period of time of receiving said signal and receipt by the gain controller of the synchronisation detection signal: determine a subsequent indication of the strength of said received signal and make a single adjustment of the gain of the at least one amplifier in dependence on the subsequent indication of signal strength.