Edge evaluation of ASK-modulated signals
    1.
    发明授权
    Edge evaluation of ASK-modulated signals 有权
    ASK调制信号的边缘评估

    公开(公告)号:US08081725B2

    公开(公告)日:2011-12-20

    申请号:US11548844

    申请日:2006-10-12

    IPC分类号: H04L7/02

    CPC分类号: H04L27/06 H04L25/061

    摘要: Signal processing circuit including a demodulator that receives a receive signal with signal edges, and outputs a demodulated receive signal with transitions from a first level to a second level or vice versa at signal edges of the receive signal, wherein points of time of the transitions depend on the steepnesses of the signal edges. The circuit also includes an edge evaluator that receives the receive signal, and outputs an evaluation signal which includes information about the steepnesses of the signal edges. The circuit also includes a signal generator that receives the output of the demodulator, receives the output of the edge evaluator, and outputs a corrected demodulated receive signal with transitions whose points of time are set with regard to the points of time of the transitions of the demodulated receive signal based on the evaluation signal in order to reduce influences of different steepnesses of the signal edges.

    摘要翻译: 信号处理电路包括解调器,其接收具有信号边缘的接收信号,并且在接收信号的信号边缘处输出具有从第一电平到第二电平或反之亦然的解调接收信号,其中转变点的时间点依赖 在信号边缘的陡度上。 电路还包括接收接收信号的边缘评估器,并且输出包括关于信号边缘的陡度的信息的评估信号。 电路还包括一个信号发生器,它接收解调器的输出,接收边缘评估器的输出,并输出一个经过修正的解调接收信号,该转换的时间点设置为相对于 基于评估信号的解调接收信号,以减少信号边缘的不同陡度的影响。

    EDGE EVALUATION OF ASK-MODULATED SIGNALS
    2.
    发明申请
    EDGE EVALUATION OF ASK-MODULATED SIGNALS 有权
    ASK调制信号的边缘评估

    公开(公告)号:US20080026712A1

    公开(公告)日:2008-01-31

    申请号:US11548844

    申请日:2006-10-12

    IPC分类号: G06F3/033

    CPC分类号: H04L27/06 H04L25/061

    摘要: Signal processing circuit including a demodulator that receives a receive signal with signal edges, and outputs a demodulated receive signal with transitions from a first level to a second level or vice versa at signal edges of the receive signal, wherein points of time of the transitions depend on the steepnesses of the signal edges. The circuit also includes an edge evaluator that receives the receive signal, and outputs an evaluation signal which includes information about the steepnesses of the signal edges. The circuit also includes a signal generator that receives the output of the demodulator, receives the output of the edge evaluator, and outputs a corrected demodulated receive signal with transitions whose points of time are set with regard to the points of time of the transitions of the demodulated receive signal based on the evaluation signal in order to reduce influences of different steepnesses of the signal edges.

    摘要翻译: 信号处理电路包括解调器,其接收具有信号边缘的接收信号,并且在接收信号的信号边缘处输出具有从第一电平到第二电平或反之亦然的解调接收信号,其中转变点的时间点依赖 在信号边缘的陡度上。 电路还包括接收接收信号的边缘评估器,并且输出包括关于信号边缘的陡度的信息的评估信号。 电路还包括一个信号发生器,它接收解调器的输出,接收边缘评估器的输出,并输出一个经过修正的解调接收信号,该转换的时间点设置为相对于 基于评估信号的解调接收信号,以减少信号边缘的不同陡度的影响。

    Adaptive edge equalization of ask-modulated signals
    3.
    发明授权
    Adaptive edge equalization of ask-modulated signals 有权
    问调调制信号的自适应边缘均衡

    公开(公告)号:US08265198B2

    公开(公告)日:2012-09-11

    申请号:US11548861

    申请日:2006-10-12

    IPC分类号: H03K9/00 H04L27/00

    CPC分类号: H04L27/06

    摘要: A signal processing circuit including a demodulator having an input for receiving a received signal which includes falling and rising signal edges, and an output for outputting a demodulated received signal which, with signal edges of the received signal, includes transitions from a first level to a second level or vice versa, wherein times of the transitions depend on steepnesses of the signal edges. Additionally, the circuit includes a signal generator having an input for receiving the demodulated received signal and coupled to the output of the demodulator, and an output for outputting a corrected demodulated received signal which includes transitions, the times of which relative to the times of the transitions of the demodulated received signal are set based on a reference signal to reduce influences of the steepnesses of the falling and rising signal edges in the corrected demodulated received signal relative to the demodulated received signal.

    摘要翻译: 一种信号处理电路,包括具有用于接收包括下降沿和上升沿的接收信号的输入的解调器,以及用于输出解调的接收信号的输出,所述接收信号的信号边缘包括从第一电平到第 第二级或反之亦然,其中转变的次数取决于信号边缘的陡度。 另外,该电路包括信号发生器,该信号发生器具有用于接收经解调的接收信号并耦合到解调器的输出的输入端,以及用于输出校正后的解调接收信号的输出,该接收信号包括相对于 基于参考信号设置解调的接收信号的转换,以减小经校正的解调接收信号中的下降沿和上升信号沿的陡度相对于解调的接收信号的影响。

    ADAPTIVE EDGE EQUALIZATION OF ASK-MODULATED SIGNALS
    4.
    发明申请
    ADAPTIVE EDGE EQUALIZATION OF ASK-MODULATED SIGNALS 有权
    ASK调制信号的自适应边缘均衡

    公开(公告)号:US20080025436A1

    公开(公告)日:2008-01-31

    申请号:US11548861

    申请日:2006-10-12

    IPC分类号: H04L25/10

    CPC分类号: H04L27/06

    摘要: A signal processing circuit including a demodulator having an input for receiving a received signal which includes falling and rising signal edges, and an output for outputting a demodulated received signal which, with signal edges of the received signal, includes transitions from a first level to a second level or vice versa, wherein times of the transitions depend on steepnesses of the signal edges. Additionally, the circuit includes a signal generator having an input for receiving the demodulated received signal and coupled to the output of the demodulator, and an output for outputting a corrected demodulated received signal which includes transitions, the times of which relative to the times of the transitions of the demodulated received signal are set based on a reference signal to reduce influences of the steepnesses of the falling and rising signal edges in the corrected demodulated received signal relative to the demodulated received signal.

    摘要翻译: 一种信号处理电路,包括具有用于接收包括下降沿和上升沿的接收信号的输入的解调器,以及用于输出解调的接收信号的输出,所述接收信号的信号边缘包括从第一电平到第 第二级或反之亦然,其中转变的次数取决于信号边缘的陡度。 另外,该电路包括信号发生器,该信号发生器具有用于接收经解调的接收信号并耦合到解调器的输出的输入端,以及用于输出校正后的解调接收信号的输出,该接收信号包括相对于 基于参考信号设置解调的接收信号的转换,以减小经校正的解调接收信号中的下降沿和上升信号沿的陡度相对于解调的接收信号的影响。

    Chip card having an adjustable demodulation unit
    7.
    发明授权
    Chip card having an adjustable demodulation unit 有权
    具有可调解调单元的芯片卡

    公开(公告)号:US08159289B2

    公开(公告)日:2012-04-17

    申请号:US12556659

    申请日:2009-09-10

    IPC分类号: H03D1/00

    CPC分类号: H03D1/06 G06K19/0723

    摘要: The present invention shows a contactless chip card comprising a controllable demodulation unit for demodulating an amplitude-modulated carrier signal, a measuring unit for determining a degree of modulation of the modulated carrier signal, and a control unit for controlling the demodulation unit on the basis of the determined degree of modulation of the carrier signal.

    摘要翻译: 本发明示出了一种非接触芯片卡,其包括用于解调幅度调制载波信号的可控解调单元,用于确定调制载波信号的调制度的测量单元,以及用于基于 决定载波信号的调制度。

    Chip Card Having an Adjustable Demodulation Unit
    9.
    发明申请
    Chip Card Having an Adjustable Demodulation Unit 有权
    具有可调解调单元的芯片卡

    公开(公告)号:US20100060351A1

    公开(公告)日:2010-03-11

    申请号:US12556659

    申请日:2009-09-10

    IPC分类号: H03D1/00

    CPC分类号: H03D1/06 G06K19/0723

    摘要: The present invention shows a contactless chip card comprising a controllable demodulation unit for demodulating an amplitude-modulated carrier signal, a measuring unit for determining a degree of modulation of the modulated carrier signal, and a control unit for controlling the demodulation unit on the basis of the determined degree of modulation of the carrier signal.

    摘要翻译: 本发明示出了一种非接触芯片卡,其包括用于解调幅度调制载波信号的可控解调单元,用于确定调制载波信号的调制度的测量单元,以及用于基于 决定载波信号的调制度。