发明名称 |
System and method for interrogation radio-frequency identification |
摘要 |
A system and method for communicating with contactless IC cards of multiple protocols and power levels includes generating a first alternating magnetic field with an interrogator for energizing a proximate IC card and receiving a data transmission from the IC card. A processor of the interrogator is configured to decode the received data transmission. The interrogator then generates a second alternating magnetic field having a different magnetic field strength than the first alternating magnetic field when failing to decode the data transmission being received from the IC card. The processor then attempts to decode a data transmission received from the IC card in response to the second alternating magnetic field.
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申请公布号 |
US2009045913(A1) |
申请公布日期 |
2009.02.19 |
申请号 |
US20070893678 |
申请日期 |
2007.08.16 |
申请人 |
FARPOINTE DATA, INC., A CALIFORNIA CORPORATION |
发明人 |
NELSON CHRISTOPHER J.;LINDLEY SCOTT E. |
分类号 |
G06K7/10 |
主分类号 |
G06K7/10 |
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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