发明名称 |
ELECTRONIC SECURITY SYSTEM |
摘要 |
An electronic security system includes an electronic lock mechanism and an electronic key, each of which is provided with a microprocessor controller and a memory storing data including an ID code. The lock microprocessor changes the ID code stored in its memory upon the operation of the lock by a correct key. The key can only be used to operate the lock once, and thereafter must be reprogrammed by a host computer with the updated ID code for the lock. The electronic lock operates a solenoid which retracts a bolt blocking mechanism which prevents the unlocking of the bolt even when a key having the correct mechanical key cuts is inserted into the lock. Power for operating the electronic lock as well as the solenoid is provided by a power supply within the key.
|
申请公布号 |
US5140317(A) |
申请公布日期 |
1992.08.18 |
申请号 |
US19900522017 |
申请日期 |
1990.05.11 |
申请人 |
MEDECO SECURITY LOCKS, INC. |
发明人 |
HYATT, JR., RICHARD G.;HALL, CHARLES E. |
分类号 |
E05B49/00;E05B49/02;G07B15/00;G07C9/00;G07F17/10;H04L9/08;H04L9/32;H04M17/00 |
主分类号 |
E05B49/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|