| 摘要 |
PURPOSE: To transmit information with different service classes altogether and to allow a receiver side to select and receive only required information. CONSTITUTION: Plural messages to which information codes to identify information contact are inserted are sent altogether from a radio transmission station. On the other hand, each receiver is provided with a service register 308 to set a service address, with an information code register 307 to set an information code. Then a 1st comparator 309 compares an address of a received text with a set service address and when coincidence is detected, a 2nd comparator 310 compares the information code in a message of the received text with the set information code and when coincidence is detected, a message to which the coincident information code is inserted is selected to receive selectively a required message. |
