| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a channel selection communication system shortening a communication time required when the wireless signal of another channel is acquired under occurrence of noise. <P>SOLUTION: Wireless communication includes a channel selection function for performing wireless communication by a channel which is not adversely affected by the noise among a plurality of channels. During the wireless communication, frame numbers K for advising what number of CH 1 frame 22a a self frame is are added to respective CH1 frames 22a transmitted by a wireless key 2. When reception errors are detected when an RF receiver 10 receives the CH 1 frames 22a, the frame number K inside the CH 1 frame 22a acquired then is referred to and a time of day when a leading frame arrives in a plurality of CH 2 frames 22b to follow is predicted. Then, data reception operation of the CH2 frame is started at the predicted time of day to acquire the leading CH 2 frame. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
