A battery-powered portable radio conserves battery power while the radio monitors messages transmitted over a radio channel, e.g., a radio control channel, Message processing circuitry processes a detected message and stores that message in memory. Before processing a subsequently detected message, the...http://www.google.de/patents/US6038436?utm_source=gb-gplus-sharePatent US6038436 - Method and apparatus for conserving power in portable, battery-operated radios
