The invention relates to a broadcast receiver, comprising a control circuit (7) for delivering encoded messages, derived from a broadcast signal, to at least one storage device (12, 28), for receiving control data, derived from the encoded messages, from at least one storage device (12, 28), and ...http://www.google.com.hk/patents/US5784691?utm_source=gb-gplus-share專利 US5784691 - RDS-TMC broadcast receiver