Method and circuit for controlling the input signal for a contactless transponder
US7545892B2 · kind B2 · utility
0Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2005 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Apr 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method for controlling an input signal for a contactless transponder, in which a signal strength of an amplitude-modulated input signal is controlled to a nominal value, and identification of a modulation gap by a demodulation device involves control for a controller gain at the time before the modulation gap being stipulated, and identification of the end of the modulation gap involves the control being released after a predetermined interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.