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1. 发明授权

US07436916B2 Pulse modulator and PPM demodulation determining circuit employed in ultra wideband wireless communications 失效
标题翻译：用于超宽带无线通信的脉冲调制器和PPM解调确定电路
公开(公告)号：US07436916B2
公开(公告)日：2008-10-14
申请号：US11006813
申请日：2004-12-08
申请人： Hiroji Akahori , Yoshihito Shimazaki
发明人： Hiroji Akahori , Yoshihito Shimazaki
IPC分类号： H03K7/02 , H03K9/02
CPC分类号： H04B1/7174 , H04B1/71637 , H04L25/4902
摘要： The present invention provides a pulse modulator and a PPM demodulation determining circuit employed in Ultra Wideband (UWB) wireless communications. The pulse modulator comprises high frequency delayers which delay an input pulse, variable gainers each of which amplifies the delayed pulse, and an adder which adds the amplified pulses. The PPM demodulation determining circuit comprises an absolute value converter which absolute value-converts a received signal, integration circuits which individually integrate the absolute value-converted signals, and a comparison/determination unit which compares the integrated signals.
摘要翻译：本发明提供了一种在超宽带（UWB）无线通信中采用的脉冲调制器和PPM解调确定电路。脉冲调制器包括延迟输入脉冲的高频延迟器，每个放大延迟脉冲的可变增益器以及将放大脉冲相加的加法器。 PPM解调判定电路包括绝对值转换接收信号的绝对值转换器，对绝对值转换信号分别积分的积分电路和对积分信号进行比较的比较/确定单元。

2. 发明授权

US07414463B2 Demodulator for demodulating pulse position modulated signal 失效
标题翻译：用于解调脉冲位置调制信号的解调器
公开(公告)号：US07414463B2
公开(公告)日：2008-08-19
申请号：US11715435
申请日：2007-03-08
申请人： Hiroji Akahori , Yoshihito Shimazaki
发明人： Hiroji Akahori , Yoshihito Shimazaki
IPC分类号： H03K9/04
CPC分类号： H03K9/04 , H04B1/71637 , H04L25/4902
摘要： A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.
摘要翻译：用于解调在UWB无线电通信系统中发送的PPM信号的PPM信号解调器包括整流器，用于对接收的PPM信号进行整流以获得绝对值信号，积分器和用于对绝对值信号进行积分的比较器，用于每第一，第二和第三积分时间比较积分时间的积分值，将积分器和比较器的各个输出的绝对值电路与相应的绝对值进行比较，用于使绝对值电路的各个输出移动平均的移动平均电路，用于产生解调数据的确定电路，积分器和比较器的积分和比较结果的基础，以及用于基于移动平均电路的输出产生控制第一，第二和第三积分时间以供应它们的积分间隔控制信号的主控制到相应的积分器和比较器。

3. 发明申请

US20050206446A1 Demodulator for demodulating pulse position modulated signal 失效
标题翻译：用于解调脉冲位置调制信号的解调器
公开(公告)号：US20050206446A1
公开(公告)日：2005-09-22
申请号：US11068921
申请日：2005-03-02
申请人： Yoshihito Shimazaki , Hiroji Akahori
发明人： Yoshihito Shimazaki , Hiroji Akahori
IPC分类号： H03K9/04 , H03M1/12 , H04B1/7163 , H04J13/00 , H04L25/49
CPC分类号： H03K9/04 , H04B1/71637 , H04L25/4902
摘要： A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.
摘要翻译：用于解调在UWB无线电通信系统中发送的PPM信号的PPM信号解调器包括整流器，用于对接收的PPM信号进行整流以获得绝对值信号，积分器和用于对绝对值信号进行积分的比较器，用于每第一，第二和第三积分时间比较积分时间的积分值，将积分器和比较器的各个输出的绝对值电路与相应的绝对值进行比较，用于对绝对值电路的各个输出进行移动平均的移动平均电路，用于产生解调数据的确定电路，积分器和比较器的积分和比较结果的基础，以及用于基于移动平均电路的输出产生控制第一，第二和第三积分时间以供应它们的积分间隔控制信号的主控制到相应的积分器和比较器。

4. 发明申请

US20050141605A1 Pulse modulator and PPM demodulation determining circuit employed in ultra wideband wireless communications 失效
标题翻译：用于超宽带无线通信的脉冲调制器和PPM解调确定电路
公开(公告)号：US20050141605A1
公开(公告)日：2005-06-30
申请号：US11006813
申请日：2004-12-08
申请人： Hiroji Akahori , Yoshihito Shimazaki
发明人： Hiroji Akahori , Yoshihito Shimazaki
IPC分类号： H04J13/00 , H04B1/717 , H04L25/49 , H04L27/04
CPC分类号： H04B1/7174 , H04B1/71637 , H04L25/4902
摘要： The present invention provides a pulse modulator and a PPM demodulation determining circuit employed in Ultra Wideband (UWB) wireless communications. The pulse modulator comprises high frequency delayers which delay an input pulse, variable gainers each of which amplifies the delayed pulse, and an adder which adds the amplified pulses. The PPM demodulation determining circuit comprises an absolute value converter which absolute value-converts a received signal, integration circuits which individually integrate the absolute value-converted signals, and a comparison/determination unit which compares the integrated signals.
摘要翻译：本发明提供了一种在超宽带（UWB）无线通信中采用的脉冲调制器和PPM解调确定电路。脉冲调制器包括延迟输入脉冲的高频延迟器，每个放大延迟脉冲的可变增益器以及将放大脉冲相加的加法器。 PPM解调判定电路包括绝对值转换接收信号的绝对值转换器，对绝对值转换信号分别积分的积分电路和对积分信号进行比较的比较/确定单元。

5. 发明申请

US20070159241A1 Demodulator for demodulating pulse position modulated signal 失效
公开(公告)号：US20070159241A1
公开(公告)日：2007-07-12
申请号：US11715435
申请日：2007-03-08
申请人： Hiroji Akahori , Yoshihito Shimazaki
发明人： Hiroji Akahori , Yoshihito Shimazaki
IPC分类号： H03K7/04 , H03K9/04 , H03K9/06
CPC分类号： H03K9/04 , H04B1/71637 , H04L25/4902
摘要： A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.

6. 发明授权

US07221215B2 Demodulator for demodulating pulse position modulated signal 失效
标题翻译：用于解调脉冲位置调制信号的解调器
公开(公告)号：US07221215B2
公开(公告)日：2007-05-22
申请号：US11068921
申请日：2005-03-02
申请人： Yoshihito Shimazaki , Hiroji Akahori
发明人： Yoshihito Shimazaki , Hiroji Akahori
IPC分类号： H03K9/04
CPC分类号： H03K9/04 , H04B1/71637 , H04L25/4902
摘要： A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.
摘要翻译：用于解调在UWB无线电通信系统中发送的PPM信号的PPM信号解调器包括整流器，用于对接收的PPM信号进行整流以获得绝对值信号，积分器和用于对绝对值信号进行积分的比较器，用于每第一，第二和第三积分时间比较积分时间的积分值，将积分器和比较器的各个输出的绝对值电路与相应的绝对值进行比较，用于对绝对值电路的各个输出进行移动平均的移动平均电路，用于产生解调数据的确定电路，积分器和比较器的积分和比较结果的基础，以及用于基于移动平均电路的输出产生控制第一，第二和第三积分时间以供应它们的积分间隔控制信号的主控制到相应的积分器和比较器。

7. 发明授权

US08817846B2 Diversity reception device and diversity reception 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：US08817846B2
公开(公告)日：2014-08-26
申请号：US13210105
申请日：2011-08-15
申请人： Hiroji Akahori
发明人： Hiroji Akahori
IPC分类号： H04B1/00 , H04B7/08 , H04L25/03 , H04L27/26 , H04L25/02
CPC分类号： H04B7/0857 , H04L25/022 , H04L25/03159 , H04L27/2647 , H04L2025/03426
摘要： A diversity reception device includes branches, a controller and a combining section. Each branch includes a correlation section that generates a correlation signal that represents a correlation between a received signal and a delayed signal or between the received signal and a reference signal, where the correlation signal level disregarding the received signal level, a time position detector that detects time positions at which the level of the correlation signal is at a peak, a demodulation section that demodulates the received signal, and a multiplication section that multiplies the demodulated signal with a weighting factor. The controller controls the weighting factor on the basis of the respective levels of the correlation signals at the detected time positions. The combining section combines, by adding, the respective demodulated signals of the branches subsequent to the demodulated signal of each branch being multiplied with the weighting factor.
摘要翻译：分集接收装置包括分支，控制器和组合部分。每个分支包括相关部分，其产生表示接收信号和延迟信号之间或接收信号与参考信号之间的相关性的相关信号，其中相关信号电平不考虑接收信号电平，检测到的时间位置检测器相关信号的电平处于峰值的时间位置，解调接收信号的解调部分和将解调信号与加权因子相乘的乘法部分。控制器基于检测到的时间位置处的相关信号的各个电平来控制加权因子。组合部分通过加上每个分支的解调信号之后的分支的相应解调信号与加权因子相乘。

8. 发明申请

US20110255642A1 RECEIVING APPARATUS, AND COMPUTER READABLE MEMORY MEDIUM THAT STORES A PROGRAM 有权
标题翻译：接收设备和存储程序的计算机可读存储介质
公开(公告)号：US20110255642A1
公开(公告)日：2011-10-20
申请号：US13087577
申请日：2011-04-15
申请人： Hiromune Nagai , Shinpei Matsuda , Hiroji Akahori
发明人： Hiromune Nagai , Shinpei Matsuda , Hiroji Akahori
IPC分类号： H04L27/08
CPC分类号： H04L27/14 , H03G3/3068 , H03G3/3078
摘要： Suitable gain control is achieved at low cost.In a receiving apparatus, an RF signal that is amplified by an RF amp is converted to an IF frequency by a frequency conversion unit and amplified by an IF amp, then the output signal from the IF amp that was converted to a digital signal by an ADC is inputted to a digital processing unit. The output from the ADC is then filtered to a desired frequency by a digital filter and inputted to the digital processing unit. In the digital processing unit the signal power before filtering by the digital filter and the signal power after filtering by the digital filter are measured, and the power difference is calculated. Based on the power difference, which indicates the ratio of unnecessary power, the digital processing unit controls the gain ratio of the RF amp and IF amp.
摘要翻译：以低成本实现适当的增益控制。在接收装置中，由RF放大器放大的RF信号由频率转换单元转换成IF频率并由IF放大器放大，然后将IF转换为数字信号的输出信号由 ADC被输入到数字处理单元。然后通过数字滤波器将ADC的输出滤波到期望的频率并输入到数字处理单元。在数字处理单元中，测量数字滤波器滤波前的信号功率和数字滤波器滤波后的信号功率，并计算功率差。基于指示不必要功率的比率的功率差，数字处理单元控制RF放大器和IF放大器的增益比。

9. 发明授权

US08032576B2 Fast fourier transform circuit and fast fourier transform method 有权
标题翻译：快速傅立叶变换电路和快速傅里叶变换方法
公开(公告)号：US08032576B2
公开(公告)日：2011-10-04
申请号：US11859863
申请日：2007-09-24
申请人： Takamitsu Hafuka , Masato Tanaka , Hiroji Akahori
发明人： Takamitsu Hafuka , Masato Tanaka , Hiroji Akahori
IPC分类号： G06F17/14
CPC分类号： G06F17/142
摘要： A fast Fourier transform circuit includes a computation component, an extraction component and a setting component. The extraction component, at each step of the computation, extracts, from computation result data points calculated by the computation component, data in a pre-specified range with a number of bits the same as a predetermined number of bits, which is an effective range for a butterfly computations. The setting component sets the data points of the predetermined number of bits which have been extracted by the extraction component to serve as input data when butterfly computations of a next step are to be performed by the computation component.
摘要翻译：快速傅里叶变换电路包括计算部件，提取部件和设定部件。在计算的每个步骤中，提取组件从计算组件计算的计算结果数据点中提取具有与预定位数相同的位数的预定范围内的数据，该预定位数是有效范围用于蝴蝶计算。当由计算部件执行下一步骤的蝶式计算时，设定部件将由提取部件提取的预定位数的数据点设定为输入数据。

10. 发明授权

US07983360B2 OFDM receiver and doppler frequency estimating circuit 有权
标题翻译： OFDM接收机和多普勒频率估计电路
公开(公告)号：US07983360B2
公开(公告)日：2011-07-19
申请号：US12955603
申请日：2010-11-29
申请人： Masato Tanaka , Hiroji Akahori
发明人： Masato Tanaka , Hiroji Akahori
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04L27/2647 , H03G3/3052 , H03G3/3078 , H04L25/03159 , H04L27/2657
摘要： A radiofrequency signal is converted to an intermediate frequency signal by a tuner, which is amplified by a variable gain amplifier. The so-amplified signal is converted into a digital signal by an ADC, which is supplied to an FFT, where it is separated into signals set every carrier, followed by being supplied to equalizers different in characteristic. The digital signal outputted from the ADC is further supplied to a level converting circuit from which a control signal is generated. The control signal is supplied to a DAC and a Doppler frequency detector. The DAC generates a gain control signal and supplies the same to the variable gain amplifier. The Doppler frequency detector outputs a frequency component of the control signal as a Doppler detection signal. The Doppler detection signal is compared with a threshold value by a comparator. A selector selects one of signals outputted from the equalizers, in accordance with a select signal indicative of the result of comparison.
摘要翻译：射频信号由调谐器转换成中频信号，该调谐器由可变增益放大器放大。被放大的信号被ADC转换成数字信号，ADC被提供给FFT，其中被分离成每个载波设置的信号，随后被提供给不同特性的均衡器。从ADC输出的数字信号进一步提供给产生控制信号的电平转换电路。控制信号被提供给DAC和多普勒频率检测器。 DAC产生增益控制信号并将其提供给可变增益放大器。多普勒频率检测器输出控制信号的频率分量作为多普勒检测信号。通过比较器将多普勒检测信号与阈值进行比较。选择器根据表示比较结果的选择信号来选择从均衡器输出的信号之一。

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