| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable the receiving of the key code information, which is transmitted from plural electronic keys (transmitting devices) having a different transmission format, so as to commonly use a receiver. SOLUTION: The key code information, which is transmitted from electronic keys, are received by a receiver circuit 53, and all bit number (X bit, Y bit) of the key code information is counted by a bit counter 54 so as to discriminate a transmission format on the basis of the all bit number. The key code information, which is decoded by a code decoding unit 55, is transmitted to a code discrimination and coincidence circuit 33 or 47 corresponding to the discriminated transmission format, and the key code information is collated with the transmission format fitted thereto.</p> |
