| 摘要 |
PURPOSE: A pager system is provided to reduce the power consumption due to the repetition of the area selection and to make users recognize the accurate state at the radio umbrella area. CONSTITUTION: A pager system comprises: an antenna modulation unit(101) to automatically change the characteristic of the antenna(100) to correspond to many frequencies; a control unit(117) to output the frequency change data to a frequency synthesis unit(106); a synthesis unit to make a receive unit(104) receive the signal using the assigned channel and convert; and an RSSI(103) to convert the frequency converted signal according to the strength of the field and then output. |
