专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4910468A Dual polarization demodulation with cross polarization cancellation 失效
标题翻译：具有交叉偏振消除的双极化解调
公开(公告)号：US4910468A
公开(公告)日：1990-03-20
申请号：US310462
申请日：1989-02-15
申请人： Hiroyuki Ohtsuka , Hideaki Matsue , Tadashi Shirato , Takehiro Murase
发明人： Hiroyuki Ohtsuka , Hideaki Matsue , Tadashi Shirato , Takehiro Murase
IPC分类号： H04B7/00
CPC分类号： H04B7/002
摘要： In a digital demodulation system (FIGS. 2, 3, 4, 7, 8) in a dual polarization radio system, having a first demodulator (4) and a first A/D converter (14) for a main signal, a second demodulator (5) and a second A/D converter (15c) for an interference signal (cross polarization signal), a transversal filter (18) for providing a compensation signal for cancelling an interference component in the main signal depending upon the demodulated interference component; the second A/D converter (15c) for providing the interference component in digital form is operated with a clock signal (102) regenerated in the main signal branch (4, 14) so that system operates correctly even when the main signal and cross polarization signal are in an asynchronous condition. The A/D converter (14, 15c, 105) is provided with an attenuator (104) for compressing amplitude of an input signal to avoid saturation of the circuit (105) in case of fading and/or distortion, and a ROM table (107) for correcting digitalized output after equalization and/or cancellation. Tap coefficients of the transversal filter (18) are obtained by a control (19) through a ZF method when inter-symbol interference is small, and a MLE method when inter-symbol interference is large. Further, an integration constant for the coefficients is adaptive depending upon inter-symbol interference.
摘要翻译：在具有用于主信号的第一解调器（4）和第一A / D转换器（14）的双偏振无线电系统中的数字解调系统（图2,3,4,7,8）中，第二解调器（15）和用于干扰信号（交叉极化信号）的第二A / D转换器（15c）;横向滤波器（18），用于根据解调的干扰分量提供用于消除主信号中的干扰分量的补偿信号; 用于以数字形式提供干扰分量的第二A / D转换器（15c）利用在主信号分支（4,14）中再生的时钟信号（102）来操作，使得即使当主信号和交叉极化信号处于异步状态。 A / D转换器（14,15c，105）设置有用于在衰落和/或失真的情况下压缩输入信号的幅度以避免电路（105）的饱和的衰减器（104）和ROM表（ 107），用于在均衡和/或取消之后校正数字化输出。当符号间干扰小时，通过ZF方法通过控制（19）获得横向滤波器（18）的抽头系数，以及当符号间干扰较大时的MLE方法。此外，系数的积分常数根据符号间干扰而自适应。

2. 发明授权

US08885369B2 Power regeneration device, method of regenerating power, power storage system, method of storing power, and high frequency device 有权
标题翻译：电力再生装置，再生电力方式，蓄电系统，蓄电方式，高频装置
公开(公告)号：US08885369B2
公开(公告)日：2014-11-11
申请号：US13505153
申请日：2010-10-27
申请人： Minoru Furukawa , Tadashi Shirato
发明人： Minoru Furukawa , Tadashi Shirato
IPC分类号： H02M1/12 , H02M1/14 , H05B6/72 , H02J17/00 , H05B6/74 , H05B6/70 , H05B6/80
CPC分类号： H05B6/80 , H02J7/025 , H02J17/00 , H02J50/20 , H02J50/40 , H05B6/705 , H05B6/72 , H05B6/74
摘要： A power regeneration device includes an extraction unit and a high frequency-to-DC converter. The extraction unit is provided on a transmission path. The transmission path is provided for transmitting a high-frequency wave from a high-frequency wave source to a high-frequency load. The extraction unit extracts a reflected high-frequency wave generated by reflecting the high-frequency wave from the high-frequency load. The high frequency-to-DC converter converts the reflected high-frequency wave extracted by the extraction unit into DC power.
摘要翻译：电力再生装置包括提取单元和高频至DC转换器。提取单元设置在传输路径上。传输路径用于将高频波从高频波源传输到高频负载。提取单元提取通过从高频负载反射高频波而产生的反射高频波。高频到DC转换器将由提取单元提取的反射高频波变换成直流电力。

3. 发明授权

US5534828A Digitized quadrature modulator 失效
标题翻译：数字化正交调制器
公开(公告)号：US5534828A
公开(公告)日：1996-07-09
申请号：US503478
申请日：1995-07-18
申请人： Takashi Okada , Tadashi Shirato
发明人： Takashi Okada , Tadashi Shirato
IPC分类号： H04L1/00 , H04L27/36 , H03C1/00 , H03C3/00 , H04L27/20
CPC分类号： H04L27/365 , H04L1/0003
摘要： A digitized quadrature modulator receives an I-channel input digital signal and Q-channel input digital signal, and quadrature modulater the I-channel and Q-channel input digital signals by digital signal processing. The modulator has a digital filter (504) for shaping the spectrum of the I-channel and Q-channel input digital signals to provide I-channel and Q-channel output signals. The output signals have a predetermined phase shift between the I-channel and the Q-channel so as to compensate a phase difference based upon the quadrature modulation by the digital signal processing. Complementers (505a, 505b) for taking the complement of the I-channel and Q-channel output signals to provide I-channel and Q-channel complement signals. A multiplexer (505c) multiplexer the I-channel and Q-channel output signals from the digital filter and the I-channel and Q-channel complement signals from the complementers to provide a quadrature modulated output signal.
摘要翻译：数字化正交调制器接收I通道输入数字信号和Q通道输入数字信号，并通过数字信号处理对I通道和Q通道输入数字信号进行正交模拟。调制器具有数字滤波器（504），用于对I通道和Q通道输入数字信号的频谱进行整形，以提供I通道和Q通道输出信号。输出信号在I信道和Q信道之间具有预定的相移，以便通过数字信号处理来补偿基于正交调制的相位差。用于获取I信道和Q信道输出信号的补码以提供I信道和Q信道补码信号的补码器（505a，505b）。复用器（505c）对来自数字滤波器的I信道和Q信道输出信号以及来自互补器的I信道和Q信道补码信号进行多路复用以提供正交调制输出信号。

4. 发明申请

US20120218799A1 POWER REGENERATION DEVICE, METHOD OF REGENERATING POWER, POWER STORAGE SYSTEM, METHOD OF STORING POWER, AND HIGH FREQUENCY DEVICE 有权
标题翻译：功率再生装置，再生电力的方法，储能系统，存储电力的方法和高频装置
公开(公告)号：US20120218799A1
公开(公告)日：2012-08-30
申请号：US13505153
申请日：2010-10-27
申请人： Minoru Furukawa , Tadashi Shirato
发明人： Minoru Furukawa , Tadashi Shirato
IPC分类号： H02M7/06
CPC分类号： H05B6/80 , H02J7/025 , H02J17/00 , H02J50/20 , H02J50/40 , H05B6/705 , H05B6/72 , H05B6/74
摘要： A power regeneration device includes an extraction unit and a high frequency-to-DC converter. The extraction unit is provided on a transmission path. The transmission path is provided for transmitting a high-frequency wave from a high-frequency wave source to a high-frequency load. The extraction unit extracts a reflected high-frequency wave generated by reflecting the high-frequency wave from the high-frequency load. The high frequency-to-DC converter converts the reflected high-frequency wave extracted by the extraction unit into DC power.
摘要翻译：电力再生装置包括提取单元和高频至DC转换器。提取单元设置在传输路径上。传输路径用于将高频波从高频波源传输到高频负载。提取单元提取通过从高频负载反射高频波而产生的反射高频波。高频到DC转换器将由提取单元提取的反射高频波变换成直流电力。

5. 发明授权

US5920220A Clock timing recovery methods and circuits 失效
标题翻译：时钟定时恢复方法和电路
公开(公告)号：US5920220A
公开(公告)日：1999-07-06
申请号：US897452
申请日：1997-07-22
申请人： Toshiaki Takao , Yoshifumi Suzuki , Tadashi Shirato
发明人： Toshiaki Takao , Yoshifumi Suzuki , Tadashi Shirato
IPC分类号： H04L7/00 , H04L7/02 , H04L7/033 , H04L7/04 , H03H3/00
CPC分类号： H04L7/0054 , H04L7/0062 , H04L7/0334 , H04L7/046 , H04L2007/047 , H04L7/0337
摘要： A clock timing recovery circuit for recovering the clock timing from a baseband signal obtained by detection of a received signal. The clock timing is rapidly established using a clock signal which has been phase-shifted from the desired clock timing to sample the baseband signal, and by obtaining the optimum phase from the sampled signal obtained as a result. A clock-timing recovery circuit according to this invention does not require oversampling and provides easy optimization of circuit constants.
摘要翻译：一种时钟定时恢复电路，用于通过检测接收到的信号而获得的基带信号恢复时钟定时。使用从期望的时钟定时相移的时钟信号来快速建立时钟定时以对基带信号进行采样，并且通过从作为结果获得的采样信号获得最佳相位来快速建立时钟定时。根据本发明的时钟定时恢复电路不需要过采样并且提供电路常数的简单优化。

6. 发明授权

US5818875A Modulation and demodulation method, modulator and demodulator 失效
标题翻译：调制解调方式，调制解调器
公开(公告)号：US5818875A
公开(公告)日：1998-10-06
申请号：US627084
申请日：1996-04-03
申请人： Yoshifumi Suzuki , Tadashi Shirato
发明人： Yoshifumi Suzuki , Tadashi Shirato
IPC分类号： H04L27/34 , H04L1/06 , H04L27/02 , H04L27/32 , H04L27/36 , H04L27/38 , H04L5/12
CPC分类号： H04L27/02 , H04L1/06 , H04L27/32 , H04L27/389
摘要： A modulation and demodulation method for communication between a transmitting side and a receiving side includes a step of at the transmitting side, producing a modulating signal, an amplitude ratio of a current instantaneous amplitude of the modulating signal and an instantaneous amplitude at n symbols previously in time (n is a natural number) of the modulating signal being set to correspond to a code to be transmitted, a step of at the transmitting side, modulating a carrier with a radio frequency or an intermediate frequency by the modulating signal to provide and transmit a modulated signal, a step of at the receiving side, receiving the transmitted modulated signal to provide a received signal, and a step of at the receiving side, deciding the transmitted code from an amplitude ratio of an instantaneous amplitude of a signal point in a signal space and an instantaneous amplitude of the signal point in the signal space n symbols previously in time with respect to the received signal. A first amplitude ratio value equal to or smaller than 1 and a second amplitude ratio value equal to or greater than 1 are prepared. The amplitude ratio is selected one of the first and second amplitude values so as to prevent the modulating signal from converging to zero and from diverging.
摘要翻译：用于发送侧和接收侧之间的通信的调制和解调方法包括在发送侧产生调制信号，调制信号的当前瞬时幅度的幅度比和先前在n个符号的瞬时振幅的步骤调制信号的时间（n是自然数）被设置为对应于要发送的码，在发送侧的步骤，通过调制信号调制具有射频或中频的载波以提供和发送调制信号，接收侧的步骤，接收所发送的调制信号以提供接收信号;以及接收侧的步骤，根据信号点的瞬时振幅的幅度比来确定发送的码信号空间和相对于接收到的符号在时间上的信号空间中的信号点的瞬时振幅 al。准备等于或小于1的第一幅度比值和等于或大于1的第二幅度比值。振幅比选择第一和第二振幅值之一，以防止调制信号收敛到零和发散。

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