A two-way medical telemetry system is provided for displaying and monitoring, at a central location, physiologic and other patient data of multiple, remotely-located patients. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and...http://www.google.com/patents/US5767791?utm_source=gb-gplus-sharePatent US5767791 - Low-power circuit and method for providing rapid frequency lock in a wireless communications device 
