| 摘要 |
There is described a radio paging receiver including a DC power supply, a coil element, and a light emitting circuit. The light emitting circuit includes a first light emitting element connected at a first terminal to the DC power supply and at a second terminal to one end of the coil element. It further includes a second light emitting element connected at a third terminal to the other end of the coil element and at a fourth terminal to ground, such that the second light emitting element is identical with the first light emitting element with respect to direction. A first switch is connected between the second terminal and ground. A second switch is connected between the third terminal and the DC power supply. There is also provided a radio signal receiver for receiving a radio signal to produce a receive signal, a memory for storing first and second paging numbers which are assigned to the paging receiver and a detector means for comparing a receive paging number contained in the receive signal with the first and second paging numbers. If the receive paging number is identical to the first paging number, a first detect signal is produced and if the receive paging number is identical to the second paging number, a second detect signal is produced. A controller continuously turns on the first switch and repetitively turns the second switch on and off in response to the first detect signal. It also repetitively turns the first switch on and off and continuously turns on the second switch in response to the second detect signal. |
