A remote tire pressure monitoring system includes a sending unit for each monitored tire, and the sending units transmit RF signals, each including an identifier ID(i) and a pressure indicator P(i). A receiver operates in a learn mode in which the receiver associates specific identifiers either with...http://www.google.ca/patents/US6043738?utm_source=gb-gplus-sharePatent US6043738 - Method and apparatus for identifying remote sending units in a vehicle