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公开(公告)号：US10084461B2
公开(公告)日：2018-09-25
申请号：US15514211
申请日：2015-09-22
摘要： A method for producing an output bit stream for a first signal of a first carrier frequency by a security module involves the security module receiving an input signal comprising the first signal and a second signal of a second carrier frequency. A mixed signal is formed which has the first signal at the first carrier frequency, the second signal at the second carrier frequency, and a mixed product at an intermediate frequency. The mixed product is demodulated by a second nonlinear component to output a second baseband signal for generating a second bit stream relating to the first signal in the mixed product. The output logic produces the output bit stream for the first signal, and selects either the first bit stream or the second bit stream as the output bit stream for the first signal.
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公开(公告)号：US20150214918A1
公开(公告)日：2015-07-30
申请号：US14680169
申请日：2015-04-07
发明人： Koichiro KAMATA , Shinya OKANO , Misako SATO , Shuhei MAEDA
CPC分类号： H03H7/38 , H01F38/14 , H02J5/005 , H02J7/025 , H02J50/12 , H02J50/40 , H02J50/80 , H03C1/36 , H03D1/02
摘要： A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency.
摘要翻译： 一种谐振馈电系统，其能够在馈电装置和受电装置之间提供高功率传输效率，而不需要根据供电装置和受电装置之间的距离动态地控制振荡频率。 通过添加用于调节与受电装置和供电装置的匹配条件的结构，可以获得供电装置和受电装置之间的高功率传输效率。 具体地，在受电装置和供电装置中设置发送接收电路和匹配电路，通过谐振线圈发送接收用于调整匹配电路的无线信号。 因此，馈电装置可以在不调整振荡频率的情况下有效地向受电装置供电。
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3.发明授权公开(公告)号：US09083580B2
公开(公告)日：2015-07-14
申请号：US13681135
申请日：2012-11-19
申请人： Frank Schmidt
发明人： Frank Schmidt
摘要： A receiver device, A system and a method for reception of a signal having an amplitude that has been modulated with information, wherein a resistive element is provided that converts an electrical quantity into a physical parameter.
摘要翻译： 一种接收机装置，A系统和用于接收具有已经用信息调制的振幅的信号的方法，其中提供将电量转换成物理参数的电阻元件。
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公开(公告)号：US20050093682A1
公开(公告)日：2005-05-05
申请号：US10974070
申请日：2004-10-27
摘要： An amplitude demodulation method and device comprising a converter sampling an input signal having its sampling frequency corresponding to three times the modulation carrier frequency.
摘要翻译： 一种幅度解调方法和装置，包括对具有对应于调制载波频率三倍的采样频率的输入信号进行采样的转换器。
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5.发明授权Recovery of data from amplitude modulated signals with self-coherent demodulation 失效用自相干解调从幅度调制信号恢复数据
公开(公告)号：US5563550A
公开(公告)日：1996-10-08
申请号：US520357
申请日：1995-08-28
申请人： Joe M. Toth
发明人： Joe M. Toth
摘要： A demodulation system extracts data from an input amplitude modulated signal electromagnetic wave with a signal multiplying means that has two input terminals both of which are coupled to receive the input amplitude modulated signal. An output terminal of the multiplying means provides an output signal which is the instantaneous square of the input amplitude modulated signal. A lowpass filter is coupled to the output terminal of the signal multiplying means to reject at least twice the carrier frequency 2(.omega..sub.c) and higher frequency components, and to pass the second harmonic and lower frequencies of the modulation signal 2(.omega..sub.m(max)) to provide a filtered signal that is representative of the square of the amplitude modulation of the input signal. This demodulation method approaches ideal square law detection with power measurement of the input amplitude modulated signal. The filtered signal is supplied to an analog-to-digital converter to supply a digital data output. The signal may optionally be coupled from the lowpass filter through a square root circuit.
摘要翻译： 解调系统利用信号乘法装置从输入幅度调制信号电磁波提取数据，该信号乘法装置具有两个输入端，两个输入端耦合以接收输入幅度调制信号。 乘法装置的输出端提供作为输入幅度调制信号的瞬时平方的输出信号。 低通滤波器耦合到信号倍增装置的输出端，以至少抑制载波频率2（ωc）和较高频率分量的两倍，并使调制信号2的二次谐波和较低频率（ωm max））以提供表示输入信号的幅度调制的平方的滤波信号。 该解调方法通过输入幅度调制信号的功率测量方法接近理想的平方律检测。 经滤波的信号被提供给模数转换器以提供数字数据输出。 信号可以可选地从低通滤波器通过平方根电路耦合。
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公开(公告)号：US20190140676A1
公开(公告)日：2019-05-09
申请号：US15866587
申请日：2018-01-10
发明人： Chia-Wei CHEN , Kai-Wen CHENG , Ko-Yin LAI
摘要： A signal processing apparatus includes an oscillation circuit, an interpolation circuit, a matching filter, a high-pass filter and a timing recovery circuit. The oscillation circuit generates a clock signal. The interpolation circuit performs interpolation on an input signal according to the clock signal to generate an interpolation sample result. The matching filter demodulates the interpolation sample result to generate an output signal. The high-pass filter performs high-pass filtering on the interpolation sample result to generate a filtered result. The timing recovery circuit receives the filtered result, and performs timing recovery according to the filtered result.
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7.发明授权公开(公告)号：US08339193B2
公开(公告)日：2012-12-25
申请号：US12994670
申请日：2009-04-08
申请人： Sun-hee Kim , Yun-jae Won , Seung-ok Lim
发明人： Sun-hee Kim , Yun-jae Won , Seung-ok Lim
CPC分类号： H03D7/165 , H03D1/2245 , H04L5/12 , H04L27/06
摘要： The present invention relates to a demodulator for simultaneous multi-node receiving and a method therof; and, more particularly, a demodulator in a wireless communication system for receiving signals from multi nodes simultaneously and a method thereof.In accordance with the aspect of the present invention, there is provided a demodulator for simultaneous multi-node receiving which comprises: a clock generator for generating a pair of CW signals and a pair of demodulating modules, wherein the demodulating modules comprise a mixer for multiplying received signals and one of the CW signals, an integrator for integrating multiplied signal and data operating unit for calculating variation result of integrated signal at every certain symbol duration and deciding output data in accordance with the variation result.
摘要翻译： 本发明涉及用于同时多节点接收的解调器和一种方法， 更具体地，涉及用于从多个节点同时接收信号的无线通信系统中的解调器及其方法。 根据本发明的方面，提供了一种用于同时多节点接收的解调器，包括：时钟发生器，用于产生一对CW信号和一对解调模块，其中解调模块包括用于乘法的混频器 接收信号和CW信号中的一个，用于积分乘法信号的积分器和数据操作单元，用于计算每一个特定符号持续时间的积分信号的变化结果，并根据变化结果确定输出数据。
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8.发明授权公开(公告)号：US08120419B2
公开(公告)日：2012-02-21
申请号：US12722812
申请日：2010-03-12
申请人： Jong Pil Cho , Hyuk Jun Sung
发明人： Jong Pil Cho , Hyuk Jun Sung
IPC分类号： H03D1/00 , H03D1/02 , H03D1/06 , H03D3/00 , H03D5/00 , H03K9/00 , H04B1/16 , H04B1/18 , H04L27/00
CPC分类号： H03D1/06
摘要： A type-A demodulator comprising a first rectifier configured to rectify a radio frequency (RF) signal received through an antenna and output a first voltage, a second rectifier configured to rectify the voltage of the RF signal received through the antenna and output a second voltage having a different voltage level than the first voltage, and a pause data detector configured to compare the first voltage with the second voltage and detect received pause data.
摘要翻译： 一种A型解调器，包括：第一整流器，被配置为对通过天线接收的射频（RF）信号进行整流并输出第一电压;第二整流器，被配置为对通过天线接收的RF信号的电压进行整流，并输出第二电压 具有与所述第一电压不同的电压电平，以及暂停数据检测器，被配置为将所述第一电压与所述第二电压进行比较并检测接收到的暂停数据。
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公开(公告)号：US08115538B2
公开(公告)日：2012-02-14
申请号：US12501213
申请日：2009-07-10
申请人： Dirk Marien
发明人： Dirk Marien
CPC分类号： H04L27/06 , G06K19/0723 , H03D1/08 , H03D1/10 , H03D2200/0011
摘要： The invention relates to the field of modulation and demodulation circuits, such as envelope detectors used to demodulate amplitude-modulated (AM) signals. By coupling an analog circuit to a port of a digital component, an envelope detector can be obtained, which achieves demodulation of AM signals for direct coupling into a digital input port. Accordingly, an envelope detector may be used in the data receiving part of a sealed device requiring post-manufacturing data transfer, in combination with additional components that provide electromagnetic coupling, such as inductive coupling, capacitive coupling, or radiative coupling. An example of such a device is a credit card sized authentication token.
摘要翻译： 本发明涉及用于解调幅度调制（AM）信号的包络检测器的调制和解调电路领域。 通过将模拟电路耦合到数字分量的端口，可以获得包络检测器，其实现用于直接耦合到数字输入端口的AM信号的解调。 因此，包络检测器可以与需要后期制造数据传输的密封装置的数据接收部分结合使用提供诸如电感耦合，电容耦合或辐射耦合之类的电磁耦合的附加部件。 这种设备的示例是信用卡大小的认证令牌。
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公开(公告)号：US07932775B2
公开(公告)日：2011-04-26
申请号：US12366637
申请日：2009-02-05
申请人： Yu-Chi Chang
发明人： Yu-Chi Chang
CPC分类号： H03D1/2245
摘要： A digital demodulation device for demodulating an amplitude modulation (AM) signal whose carrier has a first frequency includes: a processing circuit for performing first path digital processing and second path digital processing according to a second frequency and digital values of the AM signal, where the first path digital processing represents performing down conversion by mixing the AM signal with a first sinusoidal signal whose frequency is equal to the second frequency, the second path digital processing represents performing down conversion by mixing the AM signal with a second sinusoidal signal whose frequency is equal to the second frequency, the second frequency is equal to the first frequency plus a predetermined frequency shift, and the second sinusoidal signal is orthogonal to the first sinusoidal signal; and an output stage for outputting an output signal according to processing results of the first path digital processing and the second path digital processing.
摘要翻译： 用于解调其载波具有第一频率的幅度调制（AM）信号的数字解调装置包括：根据第二频率进行第一路径数字处理和第二路径数字处理的处理电路以及AM信号的数字值，其中 第一路径数字处理表示通过将AM信号与频率等于第二频率的第一正弦信号混合来执行下变频，第二路径数字处理表示通过将AM信号与频率相等的第二正弦信号混合来执行下变频 第二频率等于第一频率加上预定频移，第二正弦信号与第一正弦信号正交; 以及输出级，用于根据第一路径数字处理和第二路径数字处理的处理结果来输出输出信号。
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