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1. 发明授权

US06421378B1 Signal waveform equalizer apparatus 有权
标题翻译：信号波形均衡器
公开(公告)号：US06421378B1
公开(公告)日：2002-07-16
申请号：US09165204
申请日：1998-10-02
申请人： Toshihiko Fukuoka , Daisuke Hayashi , Takaya Hayashi , Shigeru Soga
发明人： Toshihiko Fukuoka , Daisuke Hayashi , Takaya Hayashi , Shigeru Soga
IPC分类号： H03H730
CPC分类号： H04B7/005
摘要： Integrating AFC/APC function with waveform equalization function for and reducing the circuit size of a signal wave-form equalizer apparatus. A waveform equalization section is divided into an FFE block as an anterior stage and a DFE block as a posterior stage. An AFC/APC block is provided therebetween. In the AFC/APC block, an AFC/APC coefficient update section updates a coefficient used for removing frequency and phase errors in accordance with an LMS algorithm, and a tap multiplies a modulated signal by the updated coefficient. Error data produced by an error estimation block is used by not only FFE and DFE coefficient update sections but also the AFC/APC coefficient update section for updating the coefficients. That is to say, the waveform equalization section and the AFC/APC block use the error estimation block in common, thereby reducing the circuit size considerably.
摘要翻译：将AFC / APC功能与波形均衡功能集成，减少信号波形均衡器的电路尺寸。波形均衡部分被分为作为前级的FFE块和作为后级的DFE块。在它们之间提供AFC / APC块。在AFC / APC块中，AFC / APC系数更新部根据LMS算法更新用于去除频率和相位误差的系数，并且通过更新的系数将调制信号与调制信号相乘。由误差估计块产生的误差数据不仅用于FFE和DFE系数更新部分，而且还用于更新系数的AFC / APC系数更新部分。也就是说，波形均衡部分和AFC / APC块共同使用误差估计块，从而显着地减小了电路尺寸。

2. 发明授权

US5920228A Digital demodulation with compensation for phase and frequency of tentatively demodulated signal 失效
标题翻译：数字解调补偿相位和频率暂时解调信号
公开(公告)号：US5920228A
公开(公告)日：1999-07-06
申请号：US895093
申请日：1997-07-16
申请人： Shigeru Soga , Daisuke Hayashi , Takaya Hayashi , Seiji Sakashita
发明人： Shigeru Soga , Daisuke Hayashi , Takaya Hayashi , Seiji Sakashita
IPC分类号： H04L27/38 , H04L27/22
CPC分类号： H04L27/3872
摘要： A demodulation method for tentatively demodulating a modulated input signal by a signal having a fixed frequency to form a tentative complex demodulated signal and then generating a determined complex demodulated signal from the tentative complex demodulated signal. The method includes step (a) of obtaining a determined complex demodulated signal by compensating for the tentative complex demodulated signal based on an optimum phase compensation amount; step (b) of estimating an optimum frequency compensation amount based on a shift in the optimum phase compensation amount during a predetermined cycle; and step (c) of estimating an immediately subsequent optimum phase compensation amount to be used in the steps (a) and (b) performed in repetition, based on the tentative complex demodulated signal, the determined complex demodulated signal, and the optimum frequency compensation amount.
摘要翻译：一种用于通过具有固定频率的信号暂时解调调制输入信号以形成暂定复数解调信号，然后从暂定复数解调信号产生确定的复解调信号的解调方法。该方法包括步骤（a），通过基于最佳相位补偿量补偿暂定复数解调信号来获得确定的复解调信号; 步骤（b），基于在预定周期内的最佳相位补偿量的偏移来估计最佳频率补偿量; 以及步骤（c），基于暂定复合解调信号，所确定的复解调信号和最佳频率补偿来估计在重复执行的步骤（a）和（b）中将要使用的紧随其后的最佳相位补偿量量。

3. 发明申请

US20100323648A1 DEMODULATION DEVICE, RECEPTION DEVICE, AND DEMODULATION METHOD 审中-公开
标题翻译：解调装置，接收装置和解调方法
公开(公告)号：US20100323648A1
公开(公告)日：2010-12-23
申请号：US12745172
申请日：2008-11-18
申请人： Haruka Takano , Shigeru Soga
发明人： Haruka Takano , Shigeru Soga
IPC分类号： H04B1/18 , H03D3/02 , H03D3/00
CPC分类号： H03D3/007 , H03J1/0041 , H03J2200/17 , H04B1/30
摘要： A device mitigates reduction in reception performance caused by a harmonic component of a clock used for demodulation. The device includes a tuner performing frequency conversion by multiplying a received signal by a signal having a frequency corresponding to a frequency of a desired signal included in the received signal, and outputting the obtained frequency-converted signal; and a demodulation section generating a demodulated signal by demodulating the frequency-converted signal. The demodulation section operates in response to a master clock having a frequency corresponding to the frequency of the desired signal.
摘要翻译：一种器件减轻了由用于解调的时钟的谐波分量引起的接收性能的降低。该装置包括调谐器，通过将接收信号乘以具有与接收信号中包含的期望信号的频率相对应的频率的信号进行频率转换，并输出所获得的频率转换信号; 以及解调部分，通过对频率转换信号进行解调来产生解调信号。解调部分响应于具有对应于期望信号的频率的频率的主时钟而工作。

4. 发明授权

US08385486B2 Diversity receiving apparatus and diversity receiving method 有权
标题翻译：分集接收装置和分集接收方法
公开(公告)号：US08385486B2
公开(公告)日：2013-02-26
申请号：US12307016
申请日：2007-04-17
申请人： Shigeru Soga , Shunsuke Sakai
发明人： Shigeru Soga , Shunsuke Sakai
IPC分类号： H04L1/02
CPC分类号： H04B7/0871 , H04L5/0007 , H04L5/0048 , H04L27/2647 , H04L27/2662
摘要： There is provided a diversity receiving apparatus, comprising: a first branch (5) for decoding a frequency multiplexing signal in which a carrier group has been multiplexed, thereby outputting a first data carrier and a first pilot carrier; a second branch (6) for decoding a frequency multiplexing signal in which a carrier group has been multiplexed, thereby outputting a second data carrier and a second pilot carrier; a timing adjusting unit (7) for synchronizing processing timing for a carrier group decoded by the first branch (5) and a carrier group decoded by the second branch (6); a combining/selecting unit (8) for combining/selecting the first data carrier and/or the second data carrier; and a control unit (10) for controlling stopping and starting operation of at least one of the first branch (5) and the second branch (6) according to at least one of a receiving status of the first branch (5) and a receiving status of second branch (6).
摘要翻译：提供了一种分集接收装置，包括：第一分支（5），用于解码其中已经复用了载波组的频率复用信号，从而输出第一数据载体和第一导频载波; 用于解码其中已经复用了载波组的频率复用信号的第二分支（6），从而输出第二数据载体和第二导频载波; 定时调整单元（7），用于使由第一分支（5）解码的载波组和由第二分支（6）解码的载波组的处理定时同步; 组合/选择单元（8），用于组合/选择第一数据载体和/或第二数据载体; 以及控制单元（10），用于根据第一分支（5）的接收状态和接收到的第一分支（5）的接收状态中的至少一个来控制第一分支（5）和第二分支（6）中的至少一个的停止和开始操作第二分支（6）的状态。

5. 发明授权

US08335281B2 Diversity receiving apparatus and diversity receiving method 有权
标题翻译：分集接收装置和分集接收方法
公开(公告)号：US08335281B2
公开(公告)日：2012-12-18
申请号：US12304019
申请日：2007-03-06
申请人： Shigeru Soga , Shunsuke Sakai
发明人： Shigeru Soga , Shunsuke Sakai
IPC分类号： H04L27/06 , H04L1/02 , H04B1/10
CPC分类号： H04B7/08 , H04B7/0802 , H04B7/0837 , H04L27/2647 , H04L27/2662 , H04W4/18 , H04W88/02
摘要： There is provided a diversity receiving apparatus (1) that comprises: a receiving unit (4) for receiving a frequency-division multiplexing signal on which a carrier group is multiplexed; a first demodulating unit (5) for outputting a first data carrier and a first transmission control carrier; a second demodulating unit (6) for outputting a second data carrier and a second transmission control carrier; a timing adjusting unit (7) for synchronizing processing timing of the first demodulating unit (5) and the second demodulating unit (6); a first combining/selecting unit (60) for combining or selecting a first transmission control carrier and a second transmission control carrier; a second combining/selecting unit (8) for combining or selecting a first data carrier and a second data carrier; a decoding unit (13) for decoding a transmission control signal using the transmission control carrier selected by the first combining/selecting unit (60); and a detecting unit (14) for detecting frame synchronization.
摘要翻译：提供了一种分集接收装置（1），包括：接收单元（4），用于接收载波组复用的频分复用信号; 用于输出第一数据载体和第一传输控制载体的第一解调单元（5）用于输出第二数据载体和第二传输控制载体的第二解调单元（6）用于使第一解调单元（5）和第二解调单元（6）的处理定时同步的定时调整单元（7）; 用于组合或选择第一传输控制载体和第二传输控制载体的第一组合/选择单元（60）用于组合或选择第一数据载体和第二数据载体的第二组合/选择单元（8）解码单元，用于使用由所述第一组合/选择单元选择的所述传输控制载波来解码传输控制信号; 以及用于检测帧同步的检测单元（14）。

6. 发明申请

US20100183097A1 DIVERSITY RECEIVING APPARATUS AND DIVERSITY RECEIVING METHOD 有权
标题翻译：多样性接收装置和多样性接收方法
公开(公告)号：US20100183097A1
公开(公告)日：2010-07-22
申请号：US12304019
申请日：2007-03-06
申请人： Shigeru Soga , Shunsuke Sakai
发明人： Shigeru Soga , Shunsuke Sakai
IPC分类号： H04L27/06
CPC分类号： H04B7/08 , H04B7/0802 , H04B7/0837 , H04L27/2647 , H04L27/2662 , H04W4/18 , H04W88/02
摘要： There is provided a diversity receiving apparatus (1) that comprises: a receiving unit (4) for receiving a frequency-division multiplexing signal on which a carrier group is multiplexed; a first demodulating unit (5) for outputting a first data carrier and a first transmission control carrier; a second demodulating unit (6) for outputting a second data carrier and a second transmission control carrier; a timing adjusting unit (7) for synchronizing processing timing of the first demodulating unit (5) and the second demodulating unit (6); a first combining/selecting unit (60) for combining or selecting a first transmission control carrier and a second transmission control carrier; a second combining/selecting unit (8) for combining or selecting a first data carrier and a second data carrier; a decoding unit (13) for decoding a transmission control signal using the transmission control carrier selected by the first combining/selecting unit (60); and a detecting unit (14) for detecting frame synchronization.
摘要翻译：提供了一种分集接收装置（1），包括：接收单元（4），用于接收载波组复用的频分复用信号; 用于输出第一数据载体和第一传输控制载体的第一解调单元（5）用于输出第二数据载体和第二传输控制载体的第二解调单元（6）用于使第一解调单元（5）和第二解调单元（6）的处理定时同步的定时调整单元（7）; 用于组合或选择第一传输控制载体和第二传输控制载体的第一组合/选择单元（60）用于组合或选择第一数据载体和第二数据载体的第二组合/选择单元（8）解码单元，用于使用由所述第一组合/选择单元选择的所述传输控制载波来解码传输控制信号; 以及用于检测帧同步的检测单元（14）。

7. 发明授权

US6023491A Demodulation apparatus performing different frequency control functions using separately provided oscillators 失效
标题翻译：解调装置使用分开提供的振荡器执行不同的频率控制功能
公开(公告)号：US6023491A
公开(公告)日：2000-02-08
申请号：US492488
申请日：1995-06-20
申请人： Hiroshi Saka , Kazunao Urata , Shigeru Soga
发明人： Hiroshi Saka , Kazunao Urata , Shigeru Soga
IPC分类号： H04L27/00 , H04L27/227 , H04L27/14
CPC分类号： H04L27/2273 , H04L2027/0028 , H04L2027/0057
摘要： A QPSK modulation signal is processed with frequency conversion into an IF signal by a channel selection circuit, and then is converted into a baseband signal by a quadrature demodulator. The baseband signal has a wave thereof shaped by DTFs and then sent to a carrier recovery circuit. An offset frequency of the IF signal detected by an AFC circuit is compensated for by a baseband frequency converter including a complex multiplier and a DVCO. The frequency tracking circuit detects whether an operating frequency of another DVCO in the carrier recovery circuit goes beyond a range. By tracking an oscillation frequency of the DVCO in the baseband frequency converter so as not to go beyond the reference value, frequency deviation of the spectrum of signals which are input to the DTFs is controlled not to go beyond the reference value. By offsetting a frequency dividing ratio of a variable frequency divider of the channel selection circuit by an amount corresponding to the offset frequency of the IF signal detected by the frequency detector, the frequency deviation of the QPSK modulation signal can be compensated for whichever channel is selected.
摘要翻译：通过频道选择电路对QPSK调制信号进行频率转换处理成IF信号，然后由正交解调器转换为基带信号。基带信号具有由DTF形状的波形，然后发送到载波恢复电路。由AFC电路检测的IF信号的偏移频率由包括复数乘法器和DVCO的基带频率转换器补偿。频率跟踪电路检测载波恢复电路中的另一DVCO的工作频率是否超出范围。通过跟踪基带频率转换器中的DVCO的振荡频率以便不超过参考值，控制输入到DTF的信号频谱的频率偏差不超过参考值。通过将频道选择电路的可变分频器的分频比偏移与由频率检测器检测的IF信号的偏移频率相对应的量，可以补偿QPSK调制信号的频率偏移，以选择哪个信道。

8. 发明申请

US20100284492A1 DIVERSITY RECEIVING APPARATUS AND DIVERSITY RECEIVING METHOD 有权
标题翻译：多样性接收装置和多样性接收方法
公开(公告)号：US20100284492A1
公开(公告)日：2010-11-11
申请号：US12307016
申请日：2007-04-17
申请人： Shigeru Soga , Shunsuke Sakai
发明人： Shigeru Soga , Shunsuke Sakai
IPC分类号： H04L27/06
CPC分类号： H04B7/0871 , H04L5/0007 , H04L5/0048 , H04L27/2647 , H04L27/2662
摘要： There is provided a diversity receiving apparatus, comprising: a first branch (5) for decoding a frequency multiplexing signal in which a carrier group has been multiplexed, thereby outputting a first data carrier and a first pilot carrier; a second branch (6) for decoding a frequency multiplexing signal in which a carrier group has been multiplexed, thereby outputting a second data carrier and a second pilot carrier; a timing adjusting unit (7) for synchronizing processing timing for a carrier group decoded by the first branch (5) and a carrier group decoded by the second branch (6); a combining/selecting unit (8) for combining/selecting the first data carrier and/or the second data carrier; and a control unit (10) for controlling stopping and starting operation of at least one of the first branch (5) and the second branch (6) according to at least one of a receiving status of the first branch (5) and a receiving status of second branch (6).
摘要翻译：提供了一种分集接收装置，包括：第一分支（5），用于解码其中已经复用了载波组的频率复用信号，从而输出第一数据载体和第一导频载波; 用于解码其中已经复用了载波组的频率复用信号的第二分支（6），从而输出第二数据载体和第二导频载波; 定时调整单元（7），用于使由第一分支（5）解码的载波组和由第二分支（6）解码的载波组的处理定时同步; 组合/选择单元（8），用于组合/选择第一数据载体和/或第二数据载体; 以及控制单元（10），用于根据第一分支（5）的接收状态和接收到的第一分支（5）的接收状态中的至少一个来控制第一分支（5）和第二分支（6）中的至少一个的停止和开始操作第二分支（6）的状态。

9. 发明授权

US07457375B2 Timing extractor, timing extraction method, and demodulator having the timing extractor 失效
标题翻译：定时提取器，定时提取方法和具有定时提取器的解调器
公开(公告)号：US07457375B2
公开(公告)日：2008-11-25
申请号：US10520616
申请日：2004-06-07
申请人： Shigeru Soga
发明人： Shigeru Soga
IPC分类号： H04L27/00
CPC分类号： H04L7/027 , H04L7/007 , H04L27/2276
摘要： In a timing component extractor for a digital modulated signal, a frequency converting section 30 receives a complex baseband signal having a symbol rate fs and formed from an I signal and a Q signal, and converts frequency components ±fs/2, which are present in the complex baseband signal as the data changes, to frequency components ±fs/4. The I signal and Q signal of the complex baseband signal are then nonlinearly processed. In other words, multipliers 31, 32 square the I signal and the Q signal, respectively, and an adder 33 adds the respective results of the multipliers 31, 32. A BPF 34 extracts the frequency components ±fs/2 from the output of the adder 33, and outputs the extracted frequency components ±fs/2 as a timing signal. Accordingly, processing can be conducted at a sampling frequency which is twice the symbol rate fs. Moreover, timing extraction can be stably conducted without being affected by a carrier frequency offset.
摘要翻译：在数字调制信号的定时分量提取器中，频率转换部分30接收由I信号和Q信号形成的具有符号速率fs的复基带信号，并且将频率分量±fs / 2转换成复基带信号随数据变化，频率分量为±fs / 4。然后对复基带信号的I信号和Q信号进行非线性处理。换句话说，乘法器31,32分别对I信号和Q信号进行平方，并且加法器33将乘法器31,32的各个结果相加。 BPF34从加法器33的输出中提取频率分量±fs / 2，并将所提取的频率分量±fs / 2作为定时信号输出。因此，可以以符号率fs的两倍的采样频率进行处理。此外，可以稳定地进行定时提取而不受载波频率偏移的影响。

10. 发明申请

US20080030264A1 Amplitude Error Compensating Device and Quadrature Skew Error Compensating Device 失效
标题翻译：幅度误差补偿装置和正交倾斜误差补偿装置
公开(公告)号：US20080030264A1
公开(公告)日：2008-02-07
申请号：US11660968
申请日：2006-05-31
申请人： Haruka Takano , Shigeru Soga
发明人： Haruka Takano , Shigeru Soga
IPC分类号： H03D1/06
CPC分类号： H04L27/3863
摘要： An amplitude error compensating device comprises an amplitude correcting section for performing amplitude correction with respect to an in-phase component and a quadrature component of a complex signal obtained by quadrature demodulation, based on amplitude error information, and outputting a resultant amplitude-corrected complex signal, and an amplitude error detecting section for obtaining the amplitude error information, depending on amplitudes of an in-phase component and a quadrature component of the amplitude-corrected complex signal. The amplitude error detecting section comprises a power difference calculating section for obtaining as a power error a difference in power between the in-phase component and the quadrature component of the amplitude-corrected complex signal, a rotation detecting section for detecting a rotation of a signal point of the amplitude-corrected complex signal, an error information control section for outputting the power error when a rotation of the signal point has been detected, and 0 when a rotation of the signal point has not been detected, and a smoothing section for smoothing an output of the error information control section, and outputting the result as the amplitude error information.
摘要翻译：幅度误差补偿装置包括幅度校正部分，用于根据振幅误差信息对正交分量获得的复数信号的正交分量和正交分量进行幅度校正，并输出合成的幅度校正复信号以及幅度误差检测部分，用于根据幅度校正的复信号的同相分量和正交分量的幅度获得幅度误差信息。幅度误差检测部分包括功率差计算部分，用于获得幅度校正复信号的同相分量和正交分量之间的功率差的功率误差，用于检测信号的旋转的旋转检测部分振幅校正后的复信号的点，当检测到信号点的旋转时输出功率误差的误差信息控制部，还没有检测到信号点的旋转时的0，以及平滑化部误差信息控制部分的输出，并输出该结果作为振幅误差信息。

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