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1. 发明授权

US08572145B2 Signal processing apparatus, digital filter and recording medium 失效
标题翻译：信号处理装置，数字滤波器和记录介质
公开(公告)号：US08572145B2
公开(公告)日：2013-10-29
申请号：US12720553
申请日：2010-03-09
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： G06F17/10
CPC分类号： H03H17/0294 , H03H17/06 , H03H2218/04 , H03H2218/08
摘要： Provided is a signal processing apparatus for compensating for a non-linear distortion of a digital signal, including: an analysis signal generating section that converts the digital signal into a analysis signal of a complex number, using a digital filter; and a compensation section that compensates for the analysis signal, using a compensation coefficient of a complex number corresponding to the non-linear distortion, where the digital filter divides data of the digital signal into “n” data sequences, assigns (n*L+k)th data of the digital signal to a k-th data sequence, performs filtering on each of the data sequences using a same filter coefficient, and combines each of the data sequences after the filtering, thereby generating an imaginary number portion of the analysis signal, where “n” is an integer equal to or greater than 2, L=0, 1, . . . , and k=1, 2, . . . , n.
摘要翻译：提供一种用于补偿数字信号的非线性失真的信号处理装置，包括：使用数字滤波器将数字信号转换成复数的分析信号的分析信号生成部; 以及补偿部，其使用与非线性失真对应的复数的补偿系数来补偿分析信号，其中数字滤波器将数字信号的数据划分为“n”个数据序列，分配（n * L + 数字信号的第k个数据到第k个数据序列，使用相同的滤波器系数对每个数据序列执行滤波，并且组合滤波后的每个数据序列，从而产生分析的虚数部分信号，其中“n”是等于或大于2的整数，L = 0,1。。。，k = 1,2。。。，n。

2. 发明授权

US08519872B2 Analog-digital converting method and analog-digital converting apparatus 失效
标题翻译：模拟数字转换方法和模拟数字转换装置
公开(公告)号：US08519872B2
公开(公告)日：2013-08-27
申请号：US13157272
申请日：2011-06-09
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/06
CPC分类号： H03M1/1033 , H03M1/1215
摘要： An analog-digital converting method comprising measuring, in advance, frequency characteristics of each of a plurality of ADCs; intra-group correction of, for each of a plurality of groups obtained by dividing a plurality of measurement signals, generating measurement signals that would be obtained when the frequency characteristics of the corresponding ADCs are ideal by multiplying the measurement signals by a correction coefficient that is based on the frequency characteristics of all the ADCs in the group; and inter-group correction of correcting and combining the frequency characteristics of the groups based on a difference in the frequency characteristics between the groups formed during the intra-group correction, to generate a frequency spectrum of the digital signal.
摘要翻译：一种模拟数字转换方法，包括预先测量多个ADC中的每一个的频率特性; 对于通过划分多个测量信号而获得的多个组中的每个组进行组内校正，生成当通过将测量信号乘以校正系数而使相应ADC的频率特性理想时获得的测量信号，校正系数为基于组中所有ADC的频率特性; 以及基于组内校正之间形成的组之间的频率特性的差异来校正和组合组的频率特性的组间校正，以产生数字信号的频谱。

3. 发明授权

US07880649B2 Analog digital converting apparatus, analog digital converting method, test apparatus, program and recording medium 失效
标题翻译：模拟数字转换装置，模拟数字转换方法，测试装置，程序和记录介质
公开(公告)号：US07880649B2
公开(公告)日：2011-02-01
申请号：US12428479
申请日：2009-04-23
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/06
CPC分类号： H03M1/0614 , H03M1/1215
摘要： An AD converting apparatus converts an analog input signal into a digital output signal. The apparatus includes a plurality of AD converters that are supplied with sampling clocks differing from each other by a prescribed phase and that each output an individual signal obtained by digitizing the input signal according to the sampling clock supplied thereto, a common compensating section that commonly compensates for prescribed common non-linear distortion in the individual signals, and a plurality of individual compensating sections that each individually compensate for individual non-linear distortion in a corresponding one of the individual signals. The individual non-linear distortion is obtained as a ratio between the non-linear distortion and the common non-linear distortion in each individual signal. The apparatus further includes a combining section that combines the individual signals to generate the output signal.
摘要翻译： AD转换装置将模拟输入信号转换为数字输出信号。该装置包括多个AD转换器，其被提供有彼此相差规定相位的采样时钟，并且每个输出通过根据提供的采样时钟对输入信号进行数字化而获得的单独信号，通常补偿的公共补偿部分用于各个信号中的规定的公共非线性失真，以及多个单独补偿部分，其各自独立地补偿相应的一个单独信号中的各个非线性失真。单个非线性失真作为每个单独信号中的非线性失真与公共非线性失真之间的比率获得。该装置还包括组合部分，其组合各个信号以产生输出信号。

4. 发明授权

US07471221B2 Analog/digital converter and program therefor 失效
标题翻译：模拟/数字转换器及其程序
公开(公告)号：US07471221B2
公开(公告)日：2008-12-30
申请号：US11358452
申请日：2006-02-21
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/00
CPC分类号： H03M1/0836 , H03M1/1215
摘要： An analog-to-digital conversion apparatus includes an interleaving unit operable to align the digital data respectively output from the plurality of analog-to-digital conversion units; and a correction arithmetic unit operable to correct a data value error of a data sequence caused by an error of a frequency characteristic for each of the plurality of analog-to-digital conversion units. The correction arithmetic unit includes a data partitioning unit that partitions the data sequence into a plurality of partition data having a predetermined partition data number and respectively generates the partition data; an arithmetic unit that sequentially acquires the partition data and sequentially outputs data after correction made by sequentially performing correction arithmetic; and a data connecting unit that removes either of the duplicated data according to each partition data or the duplicated data and sequentially connects the data after correction.
摘要翻译：模数转换装置包括可操作以对齐分别从多个模数转换单元输出的数字数据的交错单元; 以及校正算术单元，其可操作以校正由所述多个模数转换单元中的每一个的频率特性的误差引起的数据序列的数据值误差。所述校正算术单元包括数据划分单元，其将所述数据序列分割成具有预定分区数据号的多个分区数据，并分别生成所述分区数据; 算术单元，其顺序地获取分割数据，并且顺序地输出通过顺序执行校正算术而进行的校正后的数据; 以及数据连接单元，其根据每个分区数据或复制数据去除复制数据中的任一个，并且在校正之后顺序地连接数据。

5. 发明申请

US20060267813A1 ANALOG/DIGITAL CONVERTER AND PROGRAM THEREFOR 失效
标题翻译：模拟/数字转换器及其程序
公开(公告)号：US20060267813A1
公开(公告)日：2006-11-30
申请号：US11138651
申请日：2005-05-26
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/10
CPC分类号： H03M1/0836 , H03M1/1215
摘要： There is provided an analog-to-digital conversion apparatus that corrects digital data output from a plurality of analog-to-digital conversion units. The analog-to-digital conversion apparatus includes an interleaving unit operable to align the digital data respectively output from the plurality of analog-to-digital conversion units and to generate a data sequence; and a correction arithmetic unit operable to correct a data value error caused by a phase error of the sampling timing of the plurality of analog-to-digital conversion units based on a frequency characteristic of each of the analog-to-digital conversion units, in which the correction arithmetic unit includes: a data partitioning unit that generates a plurality of partition data by partitioning the data sequence; a data inserting unit that inserts data with data value zero at the head or end of each of the partition data by a predetermined insertion data number to sequentially output these data; an arithmetic unit that sequentially outputs data after correction made by sequentially performing correction arithmetic with respect to the partition data sequentially output from the data inserting unit; and a data connecting unit that adds the data of the insertion data number at the end of each data after correction and the data of the insertion data number at the head of the data after correction following that data after correction in order to sequentially connect that data after correction and the data after correction following that data after correction.
摘要翻译：提供了一种用于校正从多个模数转换单元输出的数字数据的模拟 - 数字转换装置。模数转换装置包括交织单元，可操作以对齐分别从多个模数转换单元输出的数字数据并生成数据序列; 以及校正运算单元，用于基于每个所述模数转换单元的频率特性来校正由所述多个模数转换单元的采样定时的相位误差引起的数据值误差，所述校正算术单元包括：数据划分单元，通过划分所述数据序列来生成多个分区数据; 数据插入单元，其通过预定的插入数据号在每个分区数据的头部或末端插入数据值为零的数据，以顺序地输出这些数据; 算术单元，其顺序地输出相对于从数据插入单元顺序输出的分区数据顺序执行校正运算的校正后的数据; 以及数据连接单元，其在校正后的每个数据的结尾处添加插入数据号的数据，以及在校正之后的数据的头部之后的插入数据数据的数据之后，依次连接该数据经校正后的数据校正后的数据进行校正。

6. 发明申请

US20050024244A1 DIGITIZER MODULE, A WAVEFORM GENERATING MODULE, A CONVERTING METHOD, A WAVEFORM GENERATING METHOD AND A RECORDING MEDIUM FOR RECORDING A PROGRAM THEREOF 失效
标题翻译：数字模块，波形发生模块，转换方法，波形发生方法和用于记录其程序的记录介质
公开(公告)号：US20050024244A1
公开(公告)日：2005-02-03
申请号：US10926461
申请日：2004-08-25
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/06 , H03M1/08 , H03M1/10 , H03M1/12 , H04L27/00 , H04L27/18
CPC分类号： H03M1/0836 , H03M1/12
摘要： A digitizer module comprises an AD converter for sampling a pair of analog signals at a predetermined time interval and converting into a first and second digital signals respectively, a second signal frequency component calculating unit for calculating a second signal frequency component representing a component of each frequency of the second digital signal on the basis of the second digital signal, a skew frequency component calculating unit for calculating a skew frequency component representing a phase error of each frequency of the second digital signal corresponding to the first digital signal on the basis of a skew of a timing with which the pair of analog signals are sampled by the AD converter and a second signal frequency component correcting unit for correcting the second signal frequency component on the basis of the skew frequency component.
摘要翻译：数字转换器模块包括一个AD转换器，用于以预定的时间间隔对一对模拟信号进行采样并分别转换成第一和第二数字信号;第二信号频率分量计算单元，用于计算表示每个频率的分量的第二信号频率分量基于第二数字信号的第二数字信号的偏移频率分量计算单元，用于基于歪斜来计算表示对应于第一数字信号的第二数字信号的每个频率的相位误差的偏斜频率分量所述AD转换器对所述一对模拟信号进行采样的定时，以及用于基于所述偏斜频率分量校正所述第二信号频率分量的第二信号频率分量校正单元。

7. 发明授权

US06687868B1 Test device and method for electrically testing electronic device 失效
标题翻译：用于电子测试电子设备的测试装置和方法
公开(公告)号：US06687868B1
公开(公告)日：2004-02-03
申请号：US09543416
申请日：2000-04-05
申请人： Yasuo Furukawa , Koji Asami
发明人： Yasuo Furukawa , Koji Asami
IPC分类号： G01R3128
CPC分类号： G01R31/3167 , G01R31/31919
摘要： A test device for electrically testing an electronic device (DUT) 100 comprises a pattern memory 13A, a pattern generator 13, a first filter 20B, and a pin electronic assembly 19. The pattern memory 13A stores data defining test patterns to be supplied to the DUT 100. The pattern generator 13 generates a plurality of test patterns to be input to a plurality of input pins of the DUT using digital signals based on the data stored in the pattern memory 13A. The first filter converts at least one of the plurality of test patterns to analog signals. The pin electronic assembly 19 supplies the plurality of test patterns including the analog signal test pattern to the DUT 100.
摘要翻译：用于电测试电子设备（DUT）100的测试装置包括图形存储器13A，图案发生器13，第一滤光器20B和针电子组件19.图案存储器13A存储定义要提供给 DUT 100.图案生成器13基于存储在图案存储器13A中的数据，使用数字信号产生要输入到DUT的多个输入引脚的多个测试图案。第一滤波器将多个测试图案中的至少一个转换为模拟信号。引脚电子组件19将包括模拟信号测试图案的多个测试图案提供给DUT 100。

8. 发明授权

US07960995B2 Testing apparatus and testing method 有权
标题翻译：检测仪器及检测方法
公开(公告)号：US07960995B2
公开(公告)日：2011-06-14
申请号：US12210223
申请日：2008-09-15
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： G01R31/26
CPC分类号： G01R31/31924 , H04L1/24 , H04L27/18
摘要： Provided is a test apparatus that tests a device under test that outputs a plurality of modulated signals modulated with carrier signals having frequencies identical to each other, including a synthesizing section that synthesizes the plurality of modulated signals to output a synthesized signal; an AD converting section that samples the synthesized signal to output a digital signal corresponding to the synthesized signal; and a judging section that judges acceptability of the plurality of modulated signals output by the device under test, based on the digital signal.
摘要翻译：提供一种测试装置，其测试输出由具有彼此频率相同的频率相加的载波信号调制的多个调制信号的测试装置，包括合成部分，其合成多个调制信号以输出合成信号; AD转换部，对合成信号进行采样，输出与合成信号对应的数字信号; 以及判断部，其基于所述数字信号来判断被被测定装置输出的多个调制信号的可接受性。

9. 发明申请

US20100310006A1 Signal processing apparatus, test system, distortion detecting apparatus, signal compensation apparatus, analytic signal generating apparatus, recording medium and analytic signal generating method 失效
标题翻译：信号处理装置，测试系统，失真检测装置，信号补偿装置，分析信号生成装置，记录介质和分析信号生成方法
公开(公告)号：US20100310006A1
公开(公告)日：2010-12-09
申请号：US12580105
申请日：2009-10-15
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H04L25/49
CPC分类号： G01R31/31908
摘要： Provided is a reference data converting section that rearranges each of a plurality of frequency components along the frequency axis such that (i) a fundamental wave component and harmonic wave components of a reference digital signal are within a first Nyquist region of a spectrum of the reference digital signal and (ii) image components of the fundamental wave component and the harmonic wave components are within a second Nyquist region of the spectrum; and a distortion detecting section that detects the non-linear distortion of the reference digital signal caused by each harmonic wave component, based on each harmonic wave component having a prescribed order number in the spectrum in which each frequency component has been rearranged by the reference data converting section.
摘要翻译：提供了一种参考数据转换部分，其重新排列沿着频率轴的多个频率分量中的每一个，使得（i）参考数字信号的基波分量和谐波分量在参考的频谱的第一奈奎斯特区域内数字信号和（ii）基波分量和谐波分量的图像分量在频谱的第二奈奎斯特区内; 以及失真检测部，其基于在各频率分量已被基准数据重新排列的频谱中基于具有规定次序数的各个谐波成分，检测由各个谐波成分引起的基准数字信号的非线性失真转换部分。

10. 发明授权

US07385546B2 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof 失效
公开(公告)号：US07385546B2
公开(公告)日：2008-06-10
申请号：US10925732
申请日：2004-08-25
申请人： Koji Asami
发明人： Koji Asami
IPC分类号： H03M1/12 , H03M1/06
CPC分类号： H03M1/0836 , H03M1/12
摘要： A digitizer module comprises an AD converter for sampling a pair of analog signals at a predetermined time interval and converting into a first and second digital signals respectively, a second signal frequency component calculating unit for calculating a second signal frequency component representing a component of each frequency of the second digital signal on the basis of the second digital signal, a skew frequency component calculating unit for calculating a skew frequency component representing a phase error of each frequency of the second digital signal corresponding to the first digital signal on the basis of a skew of a timing with which the pair of analog signals are sampled by the AD converter and a second signal frequency component correcting unit for correcting the second signal frequency component on the basis of the skew frequency component.

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