| 摘要 |
A message in binary coded form, e.g. a personal paging call, for transmission over a number of radio stations is received on a line from a central station (1). A message over the line to the stations (e.g. 2:2 and 3:16) contains an order to set for simultaneousness. The message is received by both stations and its time of arrival noted. Transmission by radio of the received message from the station (2:2) is after a delay time (TC3) after the message is received on the line. The transmitted radio signal is received in the station (3:16) which is to be set, and the time of arrival noted. In the second station(3:16) a delay time (TC4) is inserted between the arrival of a message on the line and its transmission by radio. This time is the time from reception of the message to set for simultaneousness to the reception by radio of the same message reduced by the propagation time for the radio signal between both stations. All transmitters send the characters of the message simultaneously. |
