Method for avoiding fraud on a taximeter or tachograph
US6109520A · kind A · utility
7Cited by
3References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C7/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and device for avoiding fraud on a Taximeter or Tachograph, by connecting an auxiliary generator between the censor and the Taximeter or Tachograph. The signal which is applied to the Taximeter or Tachograph is analyzed by sampling, in an anti-fraud action is triggered off if this analysis shows that this signal has undergone a regular amplitude modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.