Electronic key apparatus
US4786900A · kind A · utility
55Cited by
4References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1986 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Sep 23, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/62
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic key apparatus wherein an encrypted code for unlocking an electronic lock is stored in an encrypted code storage register. A password is stored in a password storage register. The same password as that stored in the password storage register, is input via a switch. The password input by the switch is compared with the password stored in the password storage register, by a coincidence detection circuit. When a coincidence is detected, the encrypted code stored in the encrypted code storage register is transmitted to the electronic lock, by a transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.