Duplex transmission in an electromagnetic transponder system
US6784785B1 · kind B1 · utility
17Cited by
73References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 5, 2000 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of transmission between two elements chosen from a terminal and a transponder, each element including an oscillating circuit, a modulator and a demodulator, including simultaneously performing a transmission in amplitude modulation of a signal transmitted from a first to a second element and a transmission of a signal from the second to the first element adapted to being submitted to a phase demodulation in the latter, and wherein the amplitude modulation rate is smaller than 100%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.