| 摘要 |
A radio receiver, particularly a vehicle receiver, is equipped with a decoder for decoding traffic announcements received in digitally encoded form. It includes a memory in which the traffic announcements are stored, ready to be called up. If the radio receiver is to be capable of displaying current traffic announcements at all times, it must be kept on continuously so that it can copy any updated traffic announcements into its memory. In a vehicle receiver, however, the result is a high energy requirement that excessively burdens the vehicle battery. The radio receiver according to the invention is equipped with an energy conserving circuit, which connects only those components needed for evaluating the traffic announcements to the operating voltage source. It can moreover be provided that the greatest energy consumers of these components are switched on only intermittently, and that the complete cycles of traffic announcements are evaluated only whenever the prior evaluation of an updating bit has indicated that changes have been made. |
