Security code activated access control system
US6950944B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 16, 2001 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Aug 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/34
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An access control system that utilizes security codes (500), a database (430), and a control device (20) is disclosed. Each security codes (500) is comprised of a unique key code (502) that provides security in addition to a use code (503) that is used to convey specific user defined functions. The use code (503) may be determined by the security code requester (400) at the time of security code (500) charge out from the database (430). The database (430) controls the issuance of security codes (500) and the control device (20) validates the key code (502) within the security code (500) against key codes (502) within control device (20) memory and if valid, performs an action based on the validation of the use code (503) parameters. As the key codes (502) that are within the control device (20) memory are used, the control device (20) then self-regenerates the key codes (502) in order to extend the control device (20) service life indefinitely. The database (430) and the control device (20) have security code (500) activities that are synchronized, though the two operate independently and are not electronically connected. The system provides a secure interface for obtaining access …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.