On-board electronic device for use in electronic toll collection system
US5955970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1998 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/916
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a toll gate system in which the toll is automatically and electronically collected through wireless communication between an on-board electronic device and a stationary electronic device installed at the toll gate, illegitimate or fraudulent actions committed in the system are detected by the on-board device. When such actions are detected, a communication function of the on-board device is made inoperative. After disposing the illegitimate actions properly, the communication function of the on-board device is restored so that the on-board device can be used again thereafter. The illegitimate action such as opening the on-board device for changing or reading the data contained therein can be detected by sensing removal of screws fastening a circuit board to a case of the on-boar device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.