专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

US20090225905A1 FSK RECEIVER 失效
标题翻译： FSK接收器
公开(公告)号：US20090225905A1
公开(公告)日：2009-09-10
申请号：US12388015
申请日：2009-02-18
申请人： Shigeya Suzuki
发明人： Shigeya Suzuki
IPC分类号： H03D3/00
CPC分类号： H03J7/04 , H03J3/08
摘要： A receiver includes a band-pass filter that limits a passband of an IF (Intermediate Frequency) signal, an FSK detector that detects the IF signal passing through the band-pass filter to generate a detection signal, and a control block that controls a modulation sensitivity of the FSK detector and a pass bandwidth of the band-pass filter, in which the control block controls the modulation sensitivity of the FSK detector according to the pass bandwidth of the band-pass filter.
摘要翻译：接收机包括限制IF（中频）信号的通带的带通滤波器，检测通过带通滤波器的IF信号以产生检测信号的FSK检测器，以及控制调制 FSK检测器的灵敏度和带通滤波器的通带宽度，其中控制块根据带通滤波器的通带宽度来控制FSK检测器的调制灵敏度。

82. 发明授权

US07561638B2 Demodulation apparatus and receiving apparatus 有权
标题翻译：解调装置和接收装置
公开(公告)号：US07561638B2
公开(公告)日：2009-07-14
申请号：US11724771
申请日：2007-03-16
申请人： Katsuyuki Tanaka , Masayuki Sawada , Hideki Takahashi , Koichiro Teranishi
发明人： Katsuyuki Tanaka , Masayuki Sawada , Hideki Takahashi , Koichiro Teranishi
IPC分类号： H04L27/14 , H03D1/00 , H03D3/00 , H04B1/16 , H04B1/69
CPC分类号： H03J1/005 , H03J2200/11 , H03L7/193 , H04B2001/70706
摘要： A demodulation apparatus that can support various oscillation frequencies. The portable phone device includes a frequency synthesizer for generating a local-oscillation signal having a local oscillation frequency for converting the frequency of an input receiving signal into an intermediate frequency based on an oscillation signal generated by an TCXO and a synchronization hold portion provided with an NCO for generating a signal having a predetermined frequency based on the oscillation signal generated by TCXO. The frequency synthesizer makes the local oscillation frequency variable by setting the dividing ratio variable in accordance with an arbitrary oscillation frequency so that the intermediate frequency remains within a predetermined range regardless of the oscillation frequency, and an NCO makes the frequency of the signal variable by setting the dividing ration variable in accordance with the oscillation frequency.
摘要翻译：一种可以支持各种振荡频率的解调装置。便携式电话装置包括：频率合成器，用于产生本地振荡信号，该本地振荡信号具有本地振荡频率，用于将输入接收信号的频率转换成中频，基于由TCXO产生的振荡信号和具有 NCO，用于根据由TCXO生成的振荡信号产生具有预定频率的信号。频率合成器通过根据任意的振荡频率设定分频比而使本地振荡频率变化，使得中频保持在预定范围内而与振荡频率无关，并且NCO通过设置使信号的频率可变分频比根据振荡频率变化。

83. 发明申请

US20090103655A1 SIMPLIFIED DE-ROTATION IN DIGITAL FM DEMODULATOR ARCHITECTURES 失效
标题翻译：数字FM调制解调器架构中的简化转换
公开(公告)号：US20090103655A1
公开(公告)日：2009-04-23
申请号：US11994787
申请日：2006-07-03
申请人： Siegfried H. Arnold
发明人： Siegfried H. Arnold
IPC分类号： H04L27/14 , H03D3/00
CPC分类号： H03D3/009
摘要： The present invention relates to a digital receiver for FM signals, in particular to a new demodulator structure and demodulating method, by which according to a first aspect of the invention the usual complex de-rotation process is reduced to a simple addition/subtraction. According to a second aspect of the invention, the requirements for the sampling frequency necessary for processing the demodulator signals are reduced substantially.
摘要翻译：本发明涉及一种用于FM信号的数字接收机，特别涉及一种新的解调器结构和解调方法，根据本发明的第一方面，通常的复数去旋转处理被简化为简单的加法/减法。根据本发明的第二方面，对于解调器信号的处理所需的采样频率的要求被大大降低。

84. 发明授权

US07486717B2 Method and device for demodulating Galileo alternate binary offset carrier (Alt-BOC) signals 有权
标题翻译：用于解调伽利略交替二进制偏移载波（Alt-BOC）信号的方法和装置
公开(公告)号：US07486717B2
公开(公告)日：2009-02-03
申请号：US11680851
申请日：2007-03-01
申请人： Wim De Wilde , Jean-Marie Sleewaegen , Gonzalo Seco Granados
发明人： Wim De Wilde , Jean-Marie Sleewaegen , Gonzalo Seco Granados
IPC分类号： H04B1/707 , H03D3/00 , H04L27/06
CPC分类号： H04L27/06 , G01S19/30 , H04B1/7075 , H04B2201/70715 , H04L27/22 , H04L2027/0057
摘要： A method for demodulating alternate binary offset carrier signals includes at least two subcarriers, each having an in-phase and a quadrature component modulated by pseudo-random codes. The quadrature components are modulated by dataless pilot signals. The in-phase components are modulated by data signals. The method includes converting the alternate binary offset carrier signals into an intermediate frequency, band-pass filtering the converted signals and sampling the filtered signals, generating a carrier phase and carrier phase-rotating the sampled signals by the carrier phase, correlating the rotated sampled signals, and generating, for each subcarrier, pseudo-random binary codes and a subcarrier phase, which are used to correlate the rotated sampled signals.
摘要翻译：用于解调替代二进制偏移载波信号的方法包括至少两个子载波，每个子载波具有由伪随机码调制的同相和正交分量。正交分量由无数据导频信号调制。同相分量由数据信号调制。该方法包括将交替的二进制偏移载波信号转换成中频，对转换后的信号进行带通滤波并对滤波后的信号进行采样，产生载波相位，并通过载波相位对采样的信号进行相位旋转，将旋转后的采样信号并且为每个子载波生成伪随机二进制码和子载波相位，其用于使旋转的采样信号相关。

85. 发明授权

US07474713B2 System and method for demodulating multiple QAM signals 有权
标题翻译：用于解调多个QAM信号的系统和方法
公开(公告)号：US07474713B2
公开(公告)日：2009-01-06
申请号：US11197262
申请日：2005-08-05
申请人： Taruna Tjahjadi
发明人： Taruna Tjahjadi
IPC分类号： H04L27/22 , H03K9/00 , H03D1/00 , H03D3/00
CPC分类号： H04L27/38 , H04L27/2653
摘要： A system and method demodulate N QAM signals (N being a positive integer equal to or greater than 1) substantially simultaneously using, for example, one or two oscillators, regardless of how many QAM signals need to be demodulated.
摘要翻译：基本上同时使用例如一个或两个振荡器的N个QAM信号（N等于或大于1的正整数）的系统和方法，而不管需要解调多少个QAM信号。

86. 发明授权

US07466789B2 Counter with correction circuitry 有权
标题翻译：带校正电路的计数器
公开(公告)号：US07466789B2
公开(公告)日：2008-12-16
申请号：US11724517
申请日：2007-03-15
申请人： Sébastien Rieubon , Michael Kraemer
发明人： Sébastien Rieubon , Michael Kraemer
IPC分类号： H03K25/00 , H03K9/06 , H03D3/00
CPC分类号： H03K21/406
摘要： The invention concerns counting circuitry for providing a corrected count value based on the number of rising and falling edges of an input signal occurring during a reference time period, the counting circuitry comprising a counter (22) arranged to provide a first count value based on one of the number of said rising edges of said input signal occurring during said reference time period, and the number of said falling edges of said input signal occurring during said reference time period; characterized in that said counting circuitry further comprises adjustment circuitry (24-26) arranged to generate a corrected count value by determining the state of said input signal at the start time (70) and end time (72) of said reference time period, and adjusting said first count value if the state of said input signal at the start of said reference time period is different from the state of said input signal at the end of said reference time period.
摘要翻译：本发明涉及用于基于在参考时间段期间发生的输入信号的上升沿和下降沿的数量来提供经校正的计数值的计数电路，该计数电路包括一个计数器，该计数器被布置为基于数字中的一个提供第一计数值在参考时间段期间发生的输入信号的上升沿和在参考时间段期间发生的输入信号的下降沿的数量; 其中所述计数电路还包括调整电路，所述调整电路被布置成通过在所述参考时间段的开始时间和结束时间确定所述输入信号的状态来产生校正的计数值，以及如果所述输入信号的状态在参考时间段的开始与参考时间段结束时的输入信号的状态不同。

87. 发明申请

US20080157867A1 Individual channel phase delay scheme 有权
标题翻译：单通道相位延迟方案
公开(公告)号：US20080157867A1
公开(公告)日：2008-07-03
申请号：US11650203
申请日：2007-01-03
申请人： Christoph Horst Krah
发明人： Christoph Horst Krah
IPC分类号： H03D3/00
CPC分类号： G06F3/044
摘要： Embodiments of the present invention are directed to processing an incoming signal by using a demodulation signal, while controlling the phase of the demodulation signal in relation to the incoming signal. The incoming signal can be processed by being mixed with the modulation signal at a mixer. The mixing may thus cause various beneficial modifications of the incoming signal, such as noise suppression of the incoming signal, rectification of the incoming signal, demodulation of the incoming signal, etc.
摘要翻译：本发明的实施例涉及通过使用解调信号来处理输入信号，同时控制相对于输入信号的解调信号的相位。可以通过在混合器处与调制信号混合来处理输入信号。因此，混合可以对输入信号进行各种有益的修改，例如输入信号的噪声抑制，输入信号的整流，输入信号的解调等。

88. 发明申请

US20080064433A1 Direct Frequency Conversion Demodulator And Modulator-Demodulator 失效
标题翻译：直接变频解调器和调制解调器
公开(公告)号：US20080064433A1
公开(公告)日：2008-03-13
申请号：US11576844
申请日：2005-10-07
申请人： Bernard Huyart , Fernando Rangel De Sousa
发明人： Bernard Huyart , Fernando Rangel De Sousa
IPC分类号： H04B1/40 , H03D3/00 , H04B1/16
CPC分类号： H04B1/30 , H03D7/125
摘要： The demodulator by direct frequency conversion comprises a vector addition device having: a first circuit (1) that furnishes, starting from a first AC signal (LO), a respective AC signal to n outputs that are not all of the same amplitude and of the same frequency, but are out of phase with regard to one another in such a manner that each one is not either in phase nor in opposite phase with any other; a second circuit (2) that splits a second AC signal (RFin) toward n outputs; a number n of summers (3a, 3b, 3c) each receiving, at the input, a respective output of the first circuit (1) and a respective output of the second circuit (2), and; a respective power sensor (4a, 4b, 4c) for each summer, whereby the number n is greater than or equal to 3. The demodulator also comprises digital processing means (5, 6) that furnish the result of the demodulation.
摘要翻译：通过直接变频的解调器包括矢量加法装置，其具有：第一电路（1），其从第一AC信号（LO）开始将相应的AC信号提供给不是全部相同幅度的n个输出，相同的频率，但是彼此相异，以使得每个不与任何其它相同时相或与其相反; 将第二AC信号（RFin）分解成n个输出的第二电路（2）在输入端接收第一电路（1）的相应输出端和第二电路（2）的相应输出端的数个n个加法器（3a，3b，3c）; 每个夏季的相应功率传感器（4a，4b，4c），其中数量n大于或等于3。解调器还包括提供解调结果的数字处理装置（5,6）。

89. 发明申请

US20080008271A1 Dual-system transmitting and receiving device 审中-公开
标题翻译：双系统发射和接收设备
公开(公告)号：US20080008271A1
公开(公告)日：2008-01-10
申请号：US11822842
申请日：2007-07-10
申请人： Kwang Du Lee , Yu Sin Kim , Sang Gyu Park , Chang Soo Yang
发明人： Kwang Du Lee , Yu Sin Kim , Sang Gyu Park , Chang Soo Yang
IPC分类号： H03D3/00 , H04L27/06 , H03D1/00 , H03K9/10
CPC分类号： H04L27/001 , H04B1/0483 , H04B1/7163
摘要： Provided is a dual-system transmitting device comprising a chaos signal generator that generates a chaos signal; a band-pass filter that filters the generated chaos signal into a signal within an information transmission bandwidth preset in a transmission side; an impulse signal generator that generates an impulse signal synchronized with a transmitted signal; a switching element that selectively outputs the chaos signal passing through the band-pass filter and the generated impulse signal; an amplifier that amplifies the signal selected by the switching element; and a signal transmitting unit that transmits the signal amplified by the amplifier through an antenna. When the signal amplified by the amplifier is a chaos signal, the signal transmitting unit modulates the amplified signal through an OOK (on-off keying) scheme such that the signal is transmitted as a carrier of a transmitted signal. When the signal amplified by the amplifier is an impulse signal, the signal transmitting unit passes the signal to transmit.Provided is a dual-system receiving device, which is applied to both a received signal using a chaos signal as a carrier and a received signal using an impulse signal as a carrier, the dual-system receiving device comprising a band-pass filter that filters a received signal into a signal within an information transmission bandwidth preset in a reception side; an amplifier that amplifies the filtered received signal; a first demodulator that, when the amplified received signal is a received signal using a chaos signal as a carrier, demodulates the amplified received signal; a second demodulator that, when the amplified received signal is a received signal using an impulse signal as a carrier, demodulates the amplified received signal; and a switching element that selectively outputs the received signal amplified by the amplifier to the first or second demodulator.
摘要翻译：提供了一种双系统发射装置，其包括产生混沌信号的混沌信号发生器; 带通滤波器，其将产生的混沌信号滤波成在发送侧预设的信息传输带宽内的信号; 产生与发送信号同步的脉冲信号的脉冲信号发生器; 选择性地输出通过带通滤波器的紊乱信号和产生的脉冲信号的开关元件; 放大器，放大由开关元件选择的信号; 以及信号发送单元，其通过天线发送由放大器放大的信号。当由放大器放大的信号是混沌信号时，信号发送单元通过OOK（开关键控）方式来调制放大的信号，使得信号作为发送信号的载波被发送。当由放大器放大的信号是脉冲信号时，信号发送单元通过信号进行发送。提供了一种双系统接收装置，其被应用于使用混沌信号作为载波的接收信号和使用脉冲信号作为载波的接收信号，该双系统接收装置包括滤波器将接收到的信号输入到在接收侧预设的信息传输带宽内的信号中; 放大器，滤波后的接收信号; 第一解调器，当放大的接收信号是使用混沌信号作为载波的接收信号时，解调放大的接收信号; 第二解调器，当放大的接收信号是使用脉冲信号作为载波的接收信号时，解调放大的接收信号; 以及选择性地将由放大器放大的接收信号输出到第一或第二解调器的开关元件。

90. 再颁专利

USRE39983E1 Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size 有权
标题翻译：载波注入基于波形的调制方案，用于减少卫星应答器的功率需求和接地天线尺寸
公开(公告)号：USRE39983E1
公开(公告)日：2008-01-01
申请号：US11203648
申请日：2005-08-12
申请人： Raymond F. Cobb , Michael B. Luntz
发明人： Raymond F. Cobb , Michael B. Luntz
IPC分类号： H04L27/10 , H04L27/20 , H03D3/00
CPC分类号： H04L27/206 , H04L1/004 , H04L25/06 , H04L27/2273 , H04L2027/0067
摘要： A QPSK modulation scheme uses a data spreading mechanism to rob a relatively limited portion of available transmitter power, and inject into the QPSK waveform a prescribed amount of carrier signal power, through which detection and non-regenerative extraction of the carrier at the receiver may be achieved without incurring a signal-to-noise degradation penalty. In addition, the injected carrier-based modulation scheme of the invention may employ high performance forward error correction coding, to significantly reduce the signal power required for achieving a very low energy per bit-to-noise density ratio (Eb/N0)—on the order of one to zero dB.
摘要翻译： QPSK调制方案使用数据扩展机制来抢夺可用发射机功率的相当有限的部分，并将QPSK波形注入规定量的载波信号功率，接收机的载波的检测和非再生提取可以是实现而不会引起信噪比降级损失。此外，本发明的基于载波的调制方案可以采用高性能的前向纠错编码，以显着降低实现每比特噪声密度比非常低的能量所需的信号功率（E / SUB> / N <0 ） - 大约一到零dB。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式