Transmission apparatus for multi-address calling of e.g. disaster broadcast information in additional information provision system, has transmitter for multi-address calling of additional information over transmit channel

摘要

The transmission apparatus (110) has an additional information generator for producing additional information. A channel search unit is provided for selecting an additional information transmitting channel according to a preset frequency. A channel information retrieval unit is set for providing information over the additional information transmit channel to a general transmission unit (120). An additional information transmitter is provided for the multi-address calling of the additional information over the transmit channel. Independent claims are included for the following: (1) a receiver for receiving additional information in additional information provision system; (2) a method for multi-address calling of additional information in transmission apparatus of additional information provision system; and (3) a method for receiving additional information in receiver of additional information provision system.