| 摘要 |
A transmission method in staff location systems wherein each information signal which is transmitted from a transmitter is preceded by a search signal which is received by a receiver included in the system, which receiver operates on a periodic energization/deenergization basis, said receivers arranged, when the search signal has been thus received, to remain energized until the message of the subsequent information signal has been registered. The search signal is a data signal (6) which is divided into blocks (7). Each such block contains data information regarding the number of blocks that remain in the series of blocks. As soon as the receivers have registered that the data signal (6) is being transmitted and how many blocks are remaining, the receivers are deenergized for the remainder of the blocks (7) and are again energized at the change-over to the information signal. |
