| 发明名称 |
CONTACTLESS COMMUNICATION METHOD WITH NEGATIVE MODULATION |
| 摘要 |
The present invention concerns a method of radio-frequency communication between a contactless transponder and a reader, in which at least one sideband of the carrier frequency is used for communicating a response from the transponder by modulation of the amplitude of this carrier frequency. The method is distinguished in that the modulation at least partly applies a modulation level greater than 100%, which causes a negative modulation. The invention also concerns a corresponding communication circuit. |
| 申请公布号 |
US2014159870(A1) |
申请公布日期 |
2014.06.12 |
| 申请号 |
US201214126114 |
申请日期 |
2012.06.15 |
| 申请人 |
Caruana Jean-Paul;Capomaggio Grégory;Buton Christophe |
发明人 |
Caruana Jean-Paul;Capomaggio Grégory;Buton Christophe |
| 分类号 |
G06K7/10;H04L27/02 |
主分类号 |
G06K7/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of radio-frequency communication between a contactless transponder and a reader, in which at least one sideband of the carrier frequency is used for communicating a response from the transponder by modulation of the amplitude of this carrier frequency,
wherein the modulation at least partly applies a modulation rate greater than 100%, which causes a negative modulation.
|
| 地址 |
La Seyne Sur Mer FR |
