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1. 发明授权

US5555453A Radio communication system 失效
标题翻译：无线通信系统
公开(公告)号：US5555453A
公开(公告)日：1996-09-10
申请号：US406661
申请日：1995-03-20
申请人： Shigeki Kajimoto , Weimin Sun
发明人： Shigeki Kajimoto , Weimin Sun
IPC分类号： H04B1/26 , H04B1/10 , H04B1/28 , H04B1/06 , H04B7/00
CPC分类号： H04B1/28
摘要： A CW (Continuous Wave) radio frequency signal converted to an IF (Intermediate Frequency) signal is mixed with a local oscillator signal by an IF mixer, and the obtained signal is converted to a digital signal by an ADC (Analog-to-Digital Converter). A digital bandpass filter passes only the target component in the output of the ADC. The passed IF signal is demodulated by a digital demodulator, and the demodulated signal is converted to an analog signal before being output as a sound. When pitch control to increase the reception pitch by .DELTA.f is instructed, an MPU (Microprocessor Unit) alters the frequency of the local oscillator signal by .DELTA.f as well as the center frequency of the digital bandpass filter by .DELTA.f, so that the center frequency of the input signal to a narrow-band filter coincides with the center frequency of the digital bandpass filter.
摘要翻译：通过IF混频器将转换成IF（中频）信号的CW（连续波）射频信号与本地振荡器信号混合，并且所获得的信号由ADC（模数转换器）转换成数字信号）。数字带通滤波器仅通过ADC输出中的目标分量。通过的IF信号由数字解调器解调，解调后的信号在作为声音输出之前被转换为模拟信号。指示通过DELTA f增加接收音调的音高控制时，MPU（微处理器单元）通过DELTA f和DELTA f将数字带通滤波器的中心频率改变为本地振荡器信号的频率，使得中心到窄带滤波器的输入信号的频率与数字带通滤波器的中心频率一致。

2. 发明授权

US5530660A Digital band pass elliptic filter system 失效
公开(公告)号：US5530660A
公开(公告)日：1996-06-25
申请号：US535357
申请日：1995-09-28
申请人： Weimin Sun , Shigeki Kajimoto
发明人： Weimin Sun , Shigeki Kajimoto
IPC分类号： H03H17/04 , H03H17/02 , G06F17/10
CPC分类号： H03H17/0294
摘要： The filter coefficients of a digital band pass elliptic filter can be approximated to a linear function of the center frequency of the pass band width. The filter coefficients of a band pass digital filter having a predetermined center frequency and the slope of this linear function are stored in first and second memories. A central processing unit (CPU) obtains the difference between a desired center frequency and a predetermined center frequency. A multiplier multiplies the slope stored in the second memory by the difference obtained by the CPU. An adder adds each of the filter coefficients stored in the first memory to an associated one of the products output from the multiplier. The adding results become the filter coefficients for obtaining the desired center frequency. Those filter coefficients are set in a digital filter.

3. 发明授权

US5710996A Adaptive noise canceling system and FM radio communication receiver using said system 失效
标题翻译：自适应噪声消除系统和使用该系统的FM无线电通信接收机
公开(公告)号：US5710996A
公开(公告)日：1998-01-20
申请号：US452282
申请日：1995-05-26
申请人： Shigeki Kajimoto , Weimin Sun
发明人： Shigeki Kajimoto , Weimin Sun
IPC分类号： H03H21/00 , H03H17/00 , H04B1/12 , H04B7/005
CPC分类号： H04B7/005 , H04B1/123
摘要： An adaptive noise canceling system for improving a S/N ratio and clarity of a output signal includes a delay for delaying the input signal X(j) by a fixed time delay a, a filter for filtering the delayed signal D(j), a subtracter for subtracting the filtered signal Y(j) from the input signal X(j), a coefficients adjuster for adaptively adjusting coefficients of the filter using a least-means-square (LMS) algorithm, a level adjuster for adjusting a level of an error signal .epsilon.(j) which is obtained by subtracting the filtered signal Y(j) from the input signal X(j), and an adder for adding the level adjusted signal .epsilon.(j) to the filtered signal Y(j).
摘要翻译：用于提高S / N比和输出信号清晰度的自适应噪声消除系统包括用于将输入信号X（j）延迟固定时间延迟a的延迟，用于对延迟信号D（j）进行滤波的滤波器，用于从输入信号X（j）中减去滤波信号Y（j）的减法器，用于使用最小均方（LMS）算法自适应地调整滤波器的系数的系数调整器，用于调整通过从输入信号X（j）中减去滤波后的信号Y（j）而获得的误差信号ε（j），以及用于将电平调整信号ε（j）与滤波信号Y（j）相加的加法器。

4. 发明授权

US5548243A Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator 失效
标题翻译：用于解调单个边带信号的解调器，实际零单边带信号和调频信号，以及用于解调器的载波信号再现电路
公开(公告)号：US5548243A
公开(公告)日：1996-08-20
申请号：US480095
申请日：1995-06-07
申请人： Weimin Sun , Shigeki Kajimoto
发明人： Weimin Sun , Shigeki Kajimoto
IPC分类号： H03D1/24 , H03D3/02 , H03D3/24 , H04B1/06 , H04B1/26 , H03D3/00 , H03D1/00 , H03D5/00
CPC分类号： H03D3/242
摘要： A demodulator receives a radio signal and causes a carrier signal reproducing circuit to reproduce the carrier signal of the received signal. One amplifier amplifies the amplitude of the reproduced carrier signal by K, and another amplifies the amplitude of the reproduced carrier signal by (K+2). An adder adds the reproduced carrier signal, amplified by K, and the received signal. A subtracter subtracts the received signal from the reproduced carrier signal amplified by (K+2). The output signal of the adder is demodulated by a first FM demodulator and the output signal of the subtracter is demodulated by a second FM demodulator. Another subtracter outputs the difference between the demodulated signals from the first and second FM demodulators as a demodulated signal of the received signal.
摘要翻译：解调器接收无线电信号并使载波信号再现电路再现接收信号的载波信号。一个放大器将再现的载波信号的振幅放大K，另一个放大再生载波信号的振幅（K + 2）。加法器将由K放大的再现载波信号和接收信号相加。减法器从由（K + 2）放大的再现载波信号中减去接收信号。加法器的输出信号由第一FM解调器解调，减法器的输出信号由第二个FM解调器解调。另一个减法器将来自第一和第二FM解调器的解调信号之间的差作为接收信号的解调信号输出。

5. 发明授权

US5506548A SSB modulator for adjusting the carrier amplitude level of a modulated SSB signal 失效
标题翻译： SSB调制器，用于调整调制SSB信号的载波振幅电平
公开(公告)号：US5506548A
公开(公告)日：1996-04-09
申请号：US313878
申请日：1994-09-28
申请人： Shigeki Kajimoto , Weimin Sun
发明人： Shigeki Kajimoto , Weimin Sun
IPC分类号： H03C1/60 , H04L27/04
CPC分类号： H03C1/60
摘要： A Single-Sideband (SSB) modulator includes:a demultiplexer for successively distributing an A/D converted digital signal x(t) to L sequences x.sub.1 (t.sub.1), x.sub.2 (t.sub.2)... ...x.sub.L (t.sub.L) in accordance with a sampling period t, an adder including L/2 adders for adding constants to x.sub.i (t.sub.i) of the demultiplexer, where i is either an even or an odd number; a phase shift network system comprising L/2 phase shift networks for making a 90-degree phase difference between the outputs of the adder and x.sub.i (t.sub.i) of the demultiplexer; a timing signal generator for generating timing signals expressed by A(-1).sup.(KL)/2+n and/or A(-1).sup.((K-1)L)/2+n in accordance with the sampling period t; a multiplier including L/2 pair of multipliers for multiplying the outputs of the phase shift network system by the outputs of the timing signal generator; a multiplexer for selecting the outputs of the multiplier in accordance with the sampling period t.
摘要翻译：单边带（SSB）调制器包括：解复用器，用于依次分配A / D转换的数字信号x（t）到L个序列x1（t1），x2（t2）... ... xL（tL）具有采样周期t的加法器，包括用于将常数加到解复用器的xi（ti）的L / 2加法器，其中i是偶数或奇数; 相移网络系统，包括用于在加法器的输出和解复用器的xi（ti）之间进行90度相位差的L / 2相移网络; 定时信号发生器，用于根据采样周期t产生由A（-1）（KL）/ 2 + n和/或A（-1）（（K-1）L）/ 2 + n表示的定时信号; 乘法器，包括用于将相移网络系统的输出乘以定时信号发生器的输出的L / 2对乘法器; 多路复用器，用于根据采样周期t选择乘法器的输出。

6. 发明授权

US5479362A Digital band pass elliptic filter system 失效
标题翻译：数字带通椭圆滤波系统
公开(公告)号：US5479362A
公开(公告)日：1995-12-26
申请号：US322795
申请日：1994-10-13
申请人： Weimin Sun , Shigeki Kajimoto
发明人： Weimin Sun , Shigeki Kajimoto
IPC分类号： H03H17/04 , H03H17/02 , G06F17/10
CPC分类号： H03H17/0294
摘要： The filter coefficients of a digital band pass elliptic filter can be approximated to a linear function of the center frequency of the pass band width. The filter coefficients of a band pass digital filter having a predetermined center frequency and the slope of this linear function are stored in first and second memories. A central processing unit (CPU) obtains the difference between a desired center frequency and a predetermined center frequency. A multiplier multiplies the slope stored in the second memory by the difference obtained by the CPU. An adder adds each of the filter coefficients stored in the first memory to an associated one of the products output from the multiplier. The adding results become the filter coefficients for obtaining the desired center frequency. Those filter coefficients are set in a digital filter.
摘要翻译：数字带通椭圆滤波器的滤波器系数可以近似为通带宽度的中心频率的线性函数。具有预定中心频率的带通数字滤波器的滤波器系数和该线性函数的斜率被存储在第一和第二存储器中。中央处理单元（CPU）获得期望中心频率和预定中心频率之间的差。乘法器将存储在第二存储器中的斜率乘以由CPU获得的差值。加法器将存储在第一存储器中的每个滤波器系数与从乘法器输出的乘积相关联。加法结果成为获得所需中心频率的滤波器系数。那些滤波器系数被设置在数字滤波器中。

7. 发明申请

US20060022803A1 Semiconductor device and IC tag for transmitting/receiving data in radio communication 审中-公开
标题翻译：用于在无线电通信中发送/接收数据的半导体装置和IC标签
公开(公告)号：US20060022803A1
公开(公告)日：2006-02-02
申请号：US11191041
申请日：2005-07-28
申请人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
发明人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
IPC分类号： H04Q5/22 , H04B7/24 , G06K19/06 , G08B13/14
CPC分类号： G06K19/0723
摘要： A semiconductor device, comprises a receive circuit for generating receive data from received radio signals, a power supply voltage generation circuit for generating power supply voltage based on the received radio signals, a control circuit for performing logical processing based on the received data, a transmission circuit for generating radio signals including transmission data and transmitting the radio signals via an antenna and an oscillation circuit, which is operated using the power supply voltage generated by the power supply voltage generation circuit, for generating a predetermined frequency of clocks.
摘要翻译：一种半导体器件，包括用于从接收的无线电信号产生接收数据的接收电路，用于基于所接收的无线电信号产生电源电压的电源电压产生电路，用于基于所接收的数据执行逻辑处理的控制电路，电路，用于产生包括发送数据的无线电信号，并且经由天线和振荡电路发送无线电信号，该电路使用由电源电压产生电路产生的电源电压进行操作，以产生预定的时钟频率。

8. 发明申请

US20060022058A1 Semiconductor device for IC tag, IC tag and control method for IC tag for detecting and executing command from radio wave 失效
标题翻译：用于IC标签的半导体器件，用于从无线电波检测和执行命令的IC标签的IC标签和控制方法
公开(公告)号：US20060022058A1
公开(公告)日：2006-02-02
申请号：US11190833
申请日：2005-07-28
申请人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
发明人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
IPC分类号： G06K19/06 , G06K5/00
CPC分类号： G06K19/0723
摘要： A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and cancels the data signal when the data signal is detected from the receive data in the command execution mode.
摘要翻译：一种用于IC标签的半导体器件包括用于从接收到的RF信号中解调接收数据的接收单元和用于检测包含来自由接收单元解调的接收数据的数据信号的命令的信号处理单元，并且基于该命令执行处理，信号处理单元具有用于检测来自接收数据的命令的命令接受模式和用于执行命令的命令执行模式，并且在命令执行模式中从接收数据检测到数据信号时，取消数据信号。

9. 发明授权

US07717349B2 Semiconductor device for IC tag, IC tag and control method for IC tag for detecting and executing command from radio wave 失效
标题翻译：用于IC标签的半导体器件，用于从无线电波检测和执行命令的IC标签的IC标签和控制方法
公开(公告)号：US07717349B2
公开(公告)日：2010-05-18
申请号：US11190833
申请日：2005-07-28
申请人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
发明人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
IPC分类号： G06K5/00 , G06K19/06 , G08B13/14 , H04L9/32 , H04B1/38
CPC分类号： G06K19/0723
摘要： A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and cancels the data signal when the data signal is detected from the receive data in the command execution mode.
摘要翻译：一种用于IC标签的半导体器件包括用于从接收到的RF信号中解调接收数据的接收单元和用于检测包含来自由接收单元解调的接收数据的数据信号的命令的信号处理单元，并且基于该命令执行处理，信号处理单元具有用于检测来自接收数据的命令的命令接受模式和用于执行命令的命令执行模式，并且在命令执行模式中从接收数据检测到数据信号时，取消数据信号。

10. 发明授权

US07468668B2 Semiconductor device for IC tag, IC tag, and control method for IC tag for detecting and executing command from radio wave 有权
标题翻译：用于IC标签的半导体器件，IC标签和用于从无线电波检测和执行命令的IC标签的控制方法
公开(公告)号：US07468668B2
公开(公告)日：2008-12-23
申请号：US11191040
申请日：2005-07-28
申请人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
发明人： Kazuhiro Akiyama , Hatsuhide Igarashi , Seiichi Okamoto , Toshiyuki Miyashita , Kazumi Seki , Tatsuya Uchino , Shigeki Kajimoto
IPC分类号： G08B13/14 , G08B5/22 , H04Q9/00
CPC分类号： G06K19/0723
摘要： A semiconductor device for an IC tag comprises a receive unit for demodulating receive data from a received RF signal and a signal processing unit for detecting a command comprising data signals from the receive data demodulated by the receive unit and executing processing based on the command, wherein the signal processing unit has a command acceptance mode for detecting the command from the receive data and a command execution mode for executing the command, and generates an error signal when the data signal is not detected from the receive data in the command acceptance mode.
摘要翻译：一种用于IC标签的半导体器件包括用于从接收到的RF信号中解调接收数据的接收单元和用于检测包含来自由接收单元解调的接收数据的数据信号的命令的信号处理单元，并且基于该命令执行处理，信号处理单元具有用于检测来自接收数据的命令的命令接受模式和用于执行该命令的命令执行模式，并且当在命令接受模式中从接收数据检测不到数据信号时产生错误信号。

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