发明名称 |
Method for evaluating an input data signal and circuit system for carrying out said method |
摘要 |
A method, a circuit arrangement and an apparatus are provided for evaluating an input data signal transmitted by load modulation. A complex data signal is derived from the input data and a mean value signal of the complex data signal is thereafter derived. A complex signal without mean value is also formed from the difference between the complex data signal and the mean value signal of the complex data signal. A first and second quadratic error signals are derived and subsequently a slope signal is derived from the first and second quadratic signals. The method also comprises deriving an information signal by comparing the imaginary part signal without mean value with a decision threshold signal. The information signal indicates whether a value of the input data signal has been generated in a loaded state or an unloaded state during the load modulation.
|
申请公布号 |
US6430519(B1) |
申请公布日期 |
2002.08.06 |
申请号 |
US20000485575 |
申请日期 |
2000.02.11 |
申请人 |
PHILIPS ELECTRONICS NO. AMERICA CORP. |
发明人 |
TOBERGTE WOLFGANG |
分类号 |
G06K17/00;G06K7/00;G06K7/10;H04B5/02;(IPC1-7):G06F19/00 |
主分类号 |
G06K17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|