| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To conduct a stable frequency hopping operation between a transmission side and a receiving side, without depending on the radio communication environment. <P>SOLUTION: A hopping control apparatus 113 selects one hopping pattern from among hopping patterns P1 to PN, reads a hopping frequency series, arranged in the selected hopping pattern from a frequency hopping pattern memory 112, and sends out the hopping frequency series by wire, to frequency synthesizers 114 and 115 as a frequency designating signal with a prescribed period. The frequency synthesizers 114 and 115 generate a locally oscillated signal of the frequency specified by the frequency-designating signal each and conduct frequency hopping communication, between a first housing portion K11 and a second housing portion 12 by outputting each to mixers 103 and 109. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
