| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an SAW-ID key system capable of unlocking various kinds of doors by a non-contact operation based on an SAW-ID key without requiring any manual unlocking operation by a key and the like in the various kinds of doors. <P>SOLUTION: This SAW-ID key having a specific ID pattern capable of forming different ID patterns is always carried by a person as an unlocking key. An electric lock is arranged in the door, inside the door, or in the circumference of the door. In this electric lock, a SAW-ID key detecting pulse signal can be emitted to the SAW-ID key and a specific ID pattern signal reflected by the SAW-ID key can be received if an approach of the person to the door and the like is detected, and only when collation of the numerical value contents of the ID pattern signal with a previously set numerical value results in agreement, the electric lock can be unlocked. <P>COPYRIGHT: (C)2003,JPO</p> |
