OPENING/CLOSING AND NON-OPENING/CLOSING BODY SIDE COMMUNICATION APPARATUS, AND OPENING AND CLOSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve not only utilization efficiency of frequency resources but also reliability.;SOLUTION: A non-opening/closing body side communication apparatus communicates with an opening/closing body side communication apparatus by using a prescribed transmission signal, and is provided with a first multiplex communication means which performs communication of a transmission signal based on a prescribed multiplex communication system. In the constitution, it is desirable that the multiplex communication system performs multiplex of communication signals under same frequency. It is also desirable that the multiplex communication system repeats a transmitting period which transmits a transmission signal, and a non-transmitting period which does not transmits a transmission signal periodically, according to repetition pattern defined beforehand.;COPYRIGHT: (C)2005,JPO&NCIPI