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

US08693898B2 Adaptive equalizer, optical receiver, and tap coefficient correcting method 有权
标题翻译：自适应均衡器，光接收器和抽头系数校正方法
公开(公告)号：US08693898B2
公开(公告)日：2014-04-08
申请号：US13317297
申请日：2011-10-14
申请人： Nobukazu Koizumi , Kazuhiko Hatae , Noriyasu Nakayama , Koji Nakamuta , Hisao Nakashima , Kosuke Komaki
发明人： Nobukazu Koizumi , Kazuhiko Hatae , Noriyasu Nakayama , Koji Nakamuta , Hisao Nakashima , Kosuke Komaki
IPC分类号： H04B10/06
CPC分类号： H04B10/613 , H04B10/614 , H04B10/616 , H04L25/03044 , H04L27/223
摘要： An adaptive equalizer includes a finite impulse response filter with a predetermined number of taps; and a tap coefficient adaptive controller having a register to hold tap coefficients for the filter, a weighted center calculator to calculate a weighted center of the tap coefficients, and a tap coefficient shifter to shift the tap coefficients based on a calculation result of the weighted center. During an initial training period, the tap coefficient shifter shifts the tap coefficients on a symbol data basis such that a difference between the calculated weighted center of the tap coefficients and a tap center defined by the number of taps is minimized.
摘要翻译：自适应均衡器包括具有预定数量抽头的有限脉冲响应滤波器; 以及具有用于保持滤波器的抽头系数的寄存器的抽头系数自适应控制器，用于计算抽头系数的加权中心的加权中心计算器，以及基于加权中心的计算结果来移位抽头系数的抽头系数移位器。在初始训练期间，抽头系数移位器基于符号数据移动抽头系数，使得所计算的抽头系数的加权中心与由抽头数量定义的抽头中心之间的差最小化。

2. 发明申请

US20120134684A1 Adaptive equalizer, optical receiver, and tap coefficient correcting method 有权
标题翻译：自适应均衡器，光接收器和抽头系数校正方法
公开(公告)号：US20120134684A1
公开(公告)日：2012-05-31
申请号：US13317297
申请日：2011-10-14
申请人： Nobukazu Koizumi , Kazuhiko Hatae , Noriyasu Nakayama , Koji Nakamuta , Hisao Nakashima , Kosuke Komaki
发明人： Nobukazu Koizumi , Kazuhiko Hatae , Noriyasu Nakayama , Koji Nakamuta , Hisao Nakashima , Kosuke Komaki
IPC分类号： H04B10/06 , H04L27/01
CPC分类号： H04B10/613 , H04B10/614 , H04B10/616 , H04L25/03044 , H04L27/223
摘要： An adaptive equalizer includes a finite impulse response filter with a predetermined number of taps; and a tap coefficient adaptive controller having a register to hold tap coefficients for the filter, a weighted center calculator to calculate a weighted center of the tap coefficients, and a tap coefficient shifter to shift the tap coefficients based on a calculation result of the weighted center. During an initial training period, the tap coefficient shifter shifts the tap coefficients on a symbol data basis such that a difference between the calculated weighted center of the tap coefficients and a tap center defined by the number of taps is minimized.
摘要翻译：自适应均衡器包括具有预定数量抽头的有限脉冲响应滤波器; 以及具有用于保持滤波器的抽头系数的寄存器的抽头系数自适应控制器，用于计算抽头系数的加权中心的加权中心计算器，以及基于加权中心的计算结果来移位抽头系数的抽头系数移位器。在初始训练期间，抽头系数移位器基于符号数据移动抽头系数，使得所计算的抽头系数的加权中心与由抽头数量定义的抽头中心之间的差最小化。

3. 发明授权

US08606118B2 Optical digital coherent receiver 有权
标题翻译：光学数字相干接收机
公开(公告)号：US08606118B2
公开(公告)日：2013-12-10
申请号：US13196997
申请日：2011-08-03
申请人： Kazuhiko Hatae , Noriyasu Nakayama , Nobukazu Koizumi , Yuji Obana
发明人： Kazuhiko Hatae , Noriyasu Nakayama , Nobukazu Koizumi , Yuji Obana
IPC分类号： H04B10/06 , H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04B10/616 , H04L25/03019 , H04L25/03248 , H04L27/223 , H04L27/3809 , H04L27/3818
摘要： An ALC processing unit to adjust the signal level of outputs from an adaptive equalizer to a target value is provided in a stage later than the adaptive equalizer and earlier than a frequency offset estimation/compensation unit in an optical digital coherent receiver. The ALC processing unit generates a histogram that counts the number of samples for discrete monitored values corresponding to amplitude values of outputs from the adaptive equalizer, and determines a level adjustment coefficient that is to be multiplied by an output from the adaptive equalizer so as to multiply the determined coefficient by the output from the adaptive equalizer so that the monitored value of the peak value of the histogram is the target value.
摘要翻译：在自适应均衡器之后的阶段中比在光学数字相干接收机中的频率偏移估计/补偿单元早的阶段提供用于将从自适应均衡器输出的信号电平调整到目标值的ALC处理单元。 ALC处理单元产生对来自自适应均衡器的输出的振幅值对应的离散监视值的采样数进行计数的直方图，并确定要与自适应均衡器的输出相乘的电平调整系数，以便乘以通过来自自适应均衡器的输出确定的系数，使得直方图的峰值的监视值为目标值。

4. 发明授权

US07417792B2 Optical amplification device 有权
标题翻译：光放大装置
公开(公告)号：US07417792B2
公开(公告)日：2008-08-26
申请号：US11079080
申请日：2005-03-15
申请人： Kazuhiko Hatae , Nobukazu Koizumi , Masato Oota
发明人： Kazuhiko Hatae , Nobukazu Koizumi , Masato Oota
IPC分类号： H04B10/17
CPC分类号： H04B10/296 , H01S3/06754 , H01S3/10015 , H01S3/1301 , H01S2301/02 , H04B10/2942
摘要： An optical amplification device is disclosed that performs feedback control to maintain an amplification gain to be a constant based on measured power of input light and power of output light. The device includes a feedback control coefficient switching unit configured to, when performing the feedback control on a difference from an object amplification gain, distinguish a state of increasing or decreasing the number of frequencies of the input light and a steady state by making comparison and determination whether an amplitude of at least one of the power of the input light and the power of the output light is in a predetermined range, and switch the feedback control coefficient. Therefore, it is possible to reduce variation of the power of the output light caused by noise in the steady state without affecting operations of increasing and decreasing a number of frequencies of a light signal.
摘要翻译：公开了一种基于输入光的测量功率和输出光功率执行反馈控制以将放大增益保持为恒定的光放大装置。该装置包括：反馈控制系数切换单元，被配置为当对与物体放大增益的差执行反馈控制时，通过进行比较和确定来区分增加或减少输入光的频率和稳定状态的状态输入光的功率和输出光的功率中的至少一个的振幅是否在预定范围内，并且切换反馈控制系数。因此，可以在不影响光信号的频率的增加和减少的操作的情况下减小由稳定状态的噪声引起的输出光的功率的变化。

5. 发明申请

US20050157380A1 Optical amplification device 有权
标题翻译：光放大装置
公开(公告)号：US20050157380A1
公开(公告)日：2005-07-21
申请号：US11079080
申请日：2005-03-15
申请人： Kazuhiko Hatae , Nobukazu Koizumi , Masato Oota
发明人： Kazuhiko Hatae , Nobukazu Koizumi , Masato Oota
IPC分类号： H01S3/00 , H01S3/10 , H01S3/13 , H01S3/131
CPC分类号： H04B10/296 , H01S3/06754 , H01S3/10015 , H01S3/1301 , H01S2301/02 , H04B10/2942
摘要： An optical amplification device is disclosed that performs feedback control to maintain an amplification gain to be a constant based on measured power of input light and power of output light. The device includes a feedback control coefficient switching unit configured to, when performing the feedback control on a difference from an object amplification gain, distinguish a state of increasing or decreasing the number of frequencies of the input light and a steady state by making comparison and determination whether an amplitude of at least one of the power of the input light and the power of the output light is in a predetermined range, and switch the feedback control coefficient. Therefore, it is possible to reduce variation of the power of the output light caused by noise in the steady state without affecting operations of increasing and decreasing a number of frequencies of a light signal.
摘要翻译：公开了一种基于输入光的测量功率和输出光功率执行反馈控制以将放大增益保持为恒定的光放大装置。该装置包括：反馈控制系数切换单元，被配置为当对与物体放大增益的差执行反馈控制时，通过进行比较和确定来区分增加或减少输入光的频率和稳定状态的状态输入光的功率和输出光的功率中的至少一个的振幅是否在预定范围内，并且切换反馈控制系数。因此，可以在不影响光信号的频率的增加和减少的操作的情况下减小由稳定状态的噪声引起的输出光的功率的变化。

6. 发明授权

US08392485B2 Signal waveform generating circuit and method 有权
标题翻译：信号波形发生电路及方法
公开(公告)号：US08392485B2
公开(公告)日：2013-03-05
申请号：US12368335
申请日：2009-02-10
申请人： Kazuhiko Hatae
发明人： Kazuhiko Hatae
IPC分类号： H03B28/00
CPC分类号： H03B28/00
摘要： A signal waveform generating circuit includes a first part storing waveform data of a signal to be generated, a second part storing additional data for adjusting the waveform data, and a third part adjusting the waveform data read from the first part by the additional data read from the second part.
摘要翻译：信号波形生成电路包括存储要生成的信号的波形数据的第一部分，存储用于调整波形数据的附加数据的第二部分，以及从第一部分读取的附加数据的第三部分，第二部分。

7. 发明授权

US07649482B2 Signal modulation method, signal modulation apparatus, electronic device, and computer program product 失效
标题翻译：信号调制方式，信号调制装置，电子装置及计算机程序产品
公开(公告)号：US07649482B2
公开(公告)日：2010-01-19
申请号：US12183536
申请日：2008-07-31
申请人： Kazuhiko Hatae , Yasuo Ohtomo , Masashi Sato , Yutaka Awata
发明人： Kazuhiko Hatae , Yasuo Ohtomo , Masashi Sato , Yutaka Awata
IPC分类号： H03M3/00
CPC分类号： H03M3/442
摘要： A signal modulation method by an electronic device which includes a minimal reducing unit that minimally reduces an integrated signal returned to an adder from an integrator.The signal modulation method includes generating an added signal with the adder. The signal modulation method further includes generating a new integrated signal with the integrator by returning a previously self-generated and stored integrated signal to the adder, and by integrating the added signal generated by the adder.The signal modulation method further includes generating a new quantization signal with a quantizer by quantizing the new integrated signal generated by the integrator.
摘要翻译：一种电子设备的信号调制方法，其包括最小化降低单元，其最小程度地减少从积分器返回到加法器的积分信号。信号调制方法包括利用加法器生成相加信号。信号调制方法还包括通过将先前自生成并存储的积分信号返回到加法器，并且通过对加法器产生的相加信号进行积分，与积分器产生新的积分信号。信号调制方法还包括通过量化由积分器产生的新的积分信号，通过量化器产生新的量化信号。

8. 发明申请

US20090295437A1 SIGNAL WAVEFORM GENERATING CIRCUIT AND METHOD 有权
标题翻译：信号波形发生电路和方法
公开(公告)号：US20090295437A1
公开(公告)日：2009-12-03
申请号：US12368335
申请日：2009-02-10
申请人： Kazuhiko Hatae
发明人： Kazuhiko Hatae
IPC分类号： H03B28/00
CPC分类号： H03B28/00
摘要： A signal waveform generating circuit includes a first part storing waveform data of a signal to be generated, a second part storing additional data for adjusting the waveform data, and a third part adjusting the waveform data read from the first part by the additional data read from the second part.
摘要翻译：信号波形生成电路包括存储要生成的信号的波形数据的第一部分，存储用于调整波形数据的附加数据的第二部分，以及从第一部分读取的附加数据的第三部分，第二部分。

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