| 发明名称 |
METHOD FOR TRANSMITTING DATA FROM AN INTERROGATING DEVICE TO PORTABLE OBJECTS |
| 摘要 |
The invention concerns a device whereby the transmission is carried out by amplitude modulation and by position pulse coding. A frame comprises a start-of-frame flag (SOF) consisting of two pulses of same polarity, patterns transmitting binary symbols and consisting of two pulses of opposite polarity and an end-of-frame flag (EOF) comprising only one single pulse. The invention is useful, in particular, for interrogating radiofrequency labels
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| 申请公布号 |
WO0147201(A3) |
申请公布日期 |
2001.12.27 |
| 申请号 |
WO2000FR03589 |
申请日期 |
2000.12.19 |
| 申请人 |
COMMISSARIAT A L'ENERGIE ATOMIQUE;CROCHON, ELISABETH;THOMAS, THIERRY;BOUVIER DES NOES, MATHIEU |
发明人 |
CROCHON, ELISABETH;THOMAS, THIERRY;BOUVIER DES NOES, MATHIEU |
| 分类号 |
H04L27/02;H04B1/59;H04B7/26;H04L25/34;H04L25/49;(IPC1-7):H04L25/49;H03K7/10;H01B14/02 |
主分类号 |
H04L27/02 |
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