发明名称 |
CONTACTLESS COMMUNICATIONS METHOD BASED ON ASYNCHRONOUS MODULATIONS AND DEMODULATIONS |
摘要 |
The invention relates to a method for exchanging information by inductive coupling or without contact between a reader (2) and a transponder (4), comprising a number of demodulation steps, by the transponder, of a transmission signal coming from the reader, each demodulation step being associated with: a detection of a jump of a parameter of the transmission signal, of a first state to a second state among a set of stable states that the parameter of the transmission signal is capable of adopting; a comparison of the magnitude of the jump and/or of the direction of the jump, at one or more predetermined threshold values; an association with the magnitude of the jump and/or with the direction of the jump, at a value independent of the first state, and; a detection of a stabilization at the second state before another demodulation. The invention also relates to a device for carrying out said method. |
申请公布号 |
WO2006108986(A3) |
申请公布日期 |
2007.02.15 |
申请号 |
WO2006FR50320 |
申请日期 |
2006.04.10 |
申请人 |
COMMISSARIAT A L'ENERGIE ATOMIQUE;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE;INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE;BEIGNE, EDITH;CAUCHETEUX, DAMIEN;CROCHON, ELISABETH;RENAUDIN, MARC |
发明人 |
BEIGNE, EDITH;CAUCHETEUX, DAMIEN;CROCHON, ELISABETH;RENAUDIN, MARC |
分类号 |
H04B5/00;G06K7/08;G06K19/07 |
主分类号 |
H04B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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