Portable electronic access controlled system for parking meters or the like
US5278395A · kind A · utility
25Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1992 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic system of the type comprising: PA1 at least one portable device comprising an electronic storage memory; PA1 at least one device including a transfer module designed to be coupled temporarily with at least a portable object so as to set up a communication link with the memory, wherein the system comprises a set of specialized portable objects for the access control function and wherein the device comprises two states: PA1 a free access state, PA1 a controlled access state in which the working of the device is conditional upon the coupling, at least occasionally, of one of the portable objects for access control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.