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1. 发明授权

US06825712B2 Filter circuit, front end of communication system including the filter circuit, and communication device including the same 失效
标题翻译：滤波电路，包括滤波电路的通信系统的前端，以及包括该滤波电路的通信装置
公开(公告)号：US06825712B2
公开(公告)日：2004-11-30
申请号：US10385427
申请日：2003-03-12
申请人： Shiro Dosho , Takashi Morie , Hitoshi Kobayashi , Norihide Kinugasa , Masaomi Toyama
发明人： Shiro Dosho , Takashi Morie , Hitoshi Kobayashi , Norihide Kinugasa , Masaomi Toyama
IPC分类号： H03K500
CPC分类号： H03H11/04
摘要： In a front end that has a filter circuit and is used for a communication system having an asymmetric communication channel in which upstream and downstream data rates are different, a filter circuit for received signals, which is for filtering received signals, and a filter circuit for transmitted signals, which is for filtering transmitted signals, are provided. The filter circuit for received signals has an amplifier block including a plurality of amplifiers, a capacitor block including a plurality of capacitors and being connected to the plurality of amplifiers included in the amplifier block, and a first and a second resistor blocks each including a plurality of resistors. Either one of the first or the second resistor block is selectively switched so as to be connected to the amplifier block by a resistor block-switching circuit. The circuit scale is reduced since only one amplifier block and one capacitor block are commonly used for two kinds of filter circuits.
摘要翻译：在具有滤波器电路的前端中，用于具有上行和下行数据速率不同的非对称通信信道的通信系统，用于对接收信号进行滤波的接收信号的滤波电路和用于提供用于滤波发送信号的发送信号。用于接收信号的滤波器电路具有包括多个放大器的放大器模块，包括多个电容器并且连接到放大器模块中所包括的多个放大器的电容器模块，以及包括多个放大器的第一和第二电阻块的电阻。选择性地切换第一或第二电阻器块中的任何一个，以便通过电阻器块切换电路连接到放大器块。由于只有一个放大器块和一个电容器块通常用于两种滤波器电路，电路规模减小。

2. 发明授权

US07920002B2 Pulse synthesis circuit 有权
标题翻译：脉冲合成电路
公开(公告)号：US07920002B2
公开(公告)日：2011-04-05
申请号：US12133901
申请日：2008-06-05
申请人： Shiro Sakiyama , Yusuke Tokunaga , Shiro Dosho , Akinori Matsumoto , Takashi Morie , Kazuaki Sogawa , Yukihiro Sasagawa , Masaya Sumita
发明人： Shiro Sakiyama , Yusuke Tokunaga , Shiro Dosho , Akinori Matsumoto , Takashi Morie , Kazuaki Sogawa , Yukihiro Sasagawa , Masaya Sumita
IPC分类号： H03K5/01
CPC分类号： H03K5/00006 , H03K5/13
摘要： A high-level period of each of n first pulse signals partially or wholly overlaps a period during which all of n second pulse signals are at the low level. A high-level period of each of the n second pulse signals partially or wholly overlaps a period during which all of the n first pulse signals are at the low level. Each of n first drive transistors includes a source connected to a ground node, a drain connected to a first node, and a gate receiving a corresponding one of the first pulse signals. Each of n second drive transistors includes a source connected to the ground node, a drain connected to a second node, and a gate receiving a corresponding one of the second pulse signals. A current mirror circuit allows a current corresponding to a current flowing through the second node to flow through the first node.
摘要翻译： n个第一脉冲信号中的每一个的高电平周期部分或全部与在所有n个第二脉冲信号都处于低电平的期间重叠。 n个第二脉冲信号中的每一个的高电平周期部分地或完全地重叠在所有n个第一脉冲信号处于低电平的时段。 n个第一驱动晶体管中的每一个包括连接到接地节点的源极，连接到第一节点的漏极以及接收相应的一个第一脉冲信号的栅极。 n个第二驱动晶体管中的每一个包括连接到接地节点的源极，连接到第二节点的漏极和接收相应的一个第二脉冲信号的栅极。电流镜电路允许对应于流过第二节点的电流的电流流过第一节点。

3. 发明授权

US07633421B2 A/D converter 失效
标题翻译： A / D转换器
公开(公告)号：US07633421B2
公开(公告)日：2009-12-15
申请号：US12093252
申请日：2007-07-30
申请人： Shiro Dosho , Takashi Morie , Yusuke Tokunaga , Shiro Sakiyama
发明人： Shiro Dosho , Takashi Morie , Yusuke Tokunaga , Shiro Sakiyama
IPC分类号： H03M1/12
CPC分类号： H03M1/123 , H03M1/1215 , H03M1/56
摘要： An A/D converter includes: a plurality of A/D conversion circuits (10 a, 10b); an input selection section (20) for selecting the A/D conversion circuit that is not executing A/D conversion to supply analog amounts obtained by sample-holding an input signal; and an output selection section (30) for selecting the A/D conversion circuit that is not executing A/D conversion to output digital amounts obtained from the selected one. Each A/D conversion circuit includes: an input memory portion (11) for sequentially storing the supplied analog amounts in a plurality of analog memory elements (111); an A/D conversion portion (12) having a plurality of A/D conversion elements (121) for converting the analog amounts stored in the analog memory elements to digital amounts; and a shift output portion (13), having a plurality of registers (131) receiving the digital amounts from the A/D conversion elements to hold the digital amounts, for shifting and outputting the digital amounts held in the registers.
摘要翻译： A / D转换器包括：多个A / D转换电路（10a，10b）; 输入选择部分（20），用于选择不执行A / D转换的A / D转换电路以提供通过采样保持输入信号获得的模拟量; 以及用于选择不执行A / D转换的A / D转换电路以输出从所选择的数字量获得的数字量的输出选择部分（30）。每个A / D转换电路包括：用于在多个模拟存储器元件（111）中顺序地存储所提供的模拟量的输入存储器部分（11）。具有用于将存储在模拟存储器元件中的模拟量转换为数字量的多个A / D转换元件的A / D转换部分（12）以及移位输出部分（13），具有从A / D转换元件接收数字量以保持数字量的多个寄存器（131），用于移位和输出保存在寄存器中的数字量。

4. 发明申请

US20080169948A1 Filter Adjustment Circuit 有权
标题翻译：过滤器调节电路
公开(公告)号：US20080169948A1
公开(公告)日：2008-07-17
申请号：US11792081
申请日：2005-09-02
申请人： Kouji Okamoto , Takashi Morie , Shiro Dosho , Hirokuni Fujiyama
发明人： Kouji Okamoto , Takashi Morie , Shiro Dosho , Hirokuni Fujiyama
IPC分类号： H03M1/06 , H03H11/04 , H03H11/20 , H03M1/10 , H03H11/12
CPC分类号： H03G5/16 , H03H11/1291 , H03H11/20
摘要： In a filter adjustment circuit for an analog filter circuit such as a Gm-C filter, an input signal IS from a reference signal generation circuit 1 is inputted to a Gm-C filter 2 to be filtered and then converted by a conversion circuit 3 to a digital signal. A reference signal RS from the reference signal generation circuit 1 is converted by a conversion circuit 4 to a digital signal. The two converted signals are held in time series in a holding circuit 5. A timing generation circuit 6 generates an update timing signal en based on a reference time-series signal ref from the holding circuit 5. A control signal generation circuit 7 generates a control signal CS based on the reference time-series signal ref and a filter output time-series signal tgt, each from the holding circuit 5. The control signal CS is inputted to the Gm-C filter 2 in response to the update timing signal en to adjust the gain of the Gm-C filter 2. As a result, variations in the response characteristics of the Gm-C filter 2 are adjusted with high accuracy with a simple circuit structure.
摘要翻译：在用于诸如Gm-C滤波器的模拟滤波器电路的滤波器调节电路中，来自参考信号产生电路1的输入信号IS被输入到要过滤的Gm-C滤波器2，然后由转换电路3转换成数字信号。来自参考信号发生电路1的参考信号RS由转换电路4转换成数字信号。两个转换信号在保持电路5中保持时间序列。定时产生电路6基于来自保持电路5的基准时间序列信号ref产生更新定时信号en。控制信号产生电路7产生控制基于参考时间序列信号ref的信号CS和来自保持电路5的滤波器输出时间序列信号tgt。控制信号CS响应于更新定时信号en至...而被输入到Gm-C滤波器2 调整Gm-C滤波器2的增益。结果，以简单的电路结构，高精度地调整Gm-C滤波器2的响应特性的变化。

5. 发明授权

US07298219B2 Phase-locked loop circuit 有权
标题翻译：锁相环电路
公开(公告)号：US07298219B2
公开(公告)日：2007-11-20
申请号：US11269742
申请日：2005-11-09
申请人： Shiro Dosho , Takashi Morie , Kouji Okamoto , Yuji Yamada , Kazuaki Sogawa
发明人： Shiro Dosho , Takashi Morie , Kouji Okamoto , Yuji Yamada , Kazuaki Sogawa
IPC分类号： H03L7/00 , H03L1/02
CPC分类号： H03L7/0995 , H03L7/0898 , H03L7/18 , H03L7/1976
摘要： The phase-locked loop circuit includes a gain setting circuit for setting a gain of a voltage controlled oscillator, and a time-constant setting circuit for setting a time constant, which is determined by the amount of current in a charge pump circuit and a capacitance value of a loop filter. The gain setting circuit sets the gain to a predetermined value, and the time-constant setting circuit sets the time constant to a predetermined value, whereby the loop band width of the phase-locked loop circuit is set to a desired value.
摘要翻译：锁相环电路包括用于设定压控振荡器的增益的增益设定电路和用于设定时间常数的时间常数设定电路，时间常数由电荷泵电路中的电流量和电容环路滤波器的值。增益设定电路将增益设定为预定值，时间常数设定电路将时间常数设定为规定值，由此将锁相环电路的环带宽度设定为期望值。

6. 发明授权

US07911369B2 Pipelined AD converter 有权
标题翻译：流水线AD转换器
公开(公告)号：US07911369B2
公开(公告)日：2011-03-22
申请号：US12600784
申请日：2008-08-21
申请人： Takashi Morie , Kazuo Matsukawa , Shiro Sakiyama , Shiro Dosho , Yusuke Tokunaga
发明人： Takashi Morie , Kazuo Matsukawa , Shiro Sakiyama , Shiro Dosho , Yusuke Tokunaga
IPC分类号： H03M1/38
CPC分类号： H03M1/0678 , H03M1/0695 , H03M1/44
摘要： A pipelined AD converter (1) includes a plurality of conversion stages (11, 11, . . . ). In each of the conversion stages, an analog-to-digital conversion circuit (101) converts an input voltage (Vin) from the preceding stage to a digital code (Dout). A digital-to-analog conversion circuit (102) converts the digital code obtained by the analog-to-digital conversion circuit to an intermediate voltage (Vda). A charge operation circuit (103) has: a capacitor section (C1, C2) for sampling the input voltage; and an amplifier section (104) for amplifying a mixed voltage of the input voltage sampled by the capacitor section and the intermediate voltage obtained by the digital-to-analog conversion circuit. The amplifier section (104) includes a plurality of op-amps (amp1, amp1, . . . ) having the same configuration and connected in parallel with each other.
摘要翻译：流水线式AD转换器（1）包括多个转换级（11,11 ...）。在每个转换级中，模数转换电路（101）将来自前级的输入电压（Vin）转换为数字代码（Dout）。数模转换电路（102）将由模数转换电路获得的数字代码转换为中间电压（Vda）。充电操作电路（103）具有用于对输入电压进行采样的电容器部（C1，C2）以及用于放大由电容器部分采样的输入电压和由数模转换电路获得的中间电压的混合电压的放大器部分（104）。放大器部分（104）包括具有相同配置并且彼此并联的多个运算放大器（amp1，amp1 ...）。

7. 发明申请

US20100149010A1 PIPELINED AD CONVERTER 有权
标题翻译：管路AD转换器
公开(公告)号：US20100149010A1
公开(公告)日：2010-06-17
申请号：US12600784
申请日：2008-08-21
申请人： Takashi Morie , Kazuo Matsukawa , Shiro Sakiyama , Shiro Dosho , Yusuke Tokunaga
发明人： Takashi Morie , Kazuo Matsukawa , Shiro Sakiyama , Shiro Dosho , Yusuke Tokunaga
IPC分类号： H03M1/38 , H03M1/00
CPC分类号： H03M1/0678 , H03M1/0695 , H03M1/44
摘要： A pipelined AD converter (1) includes a plurality of conversion stages (11, 11, . . . ). In each of the conversion stages, an analog-to-digital conversion circuit (101) converts an input voltage (Vin) from the preceding stage to a digital code (Dout). A digital-to-analog conversion circuit (102) converts the digital code obtained by the analog-to-digital conversion circuit to an intermediate voltage (Vda). A charge operation circuit (103) has: a capacitor section (C1, C2) for sampling the input voltage; and an amplifier section (104) for amplifying a mixed voltage of the input voltage sampled by the capacitor section and the intermediate voltage obtained by the digital-to-analog conversion circuit. The amplifier section (104) includes a plurality of op-amps (amp1, amp1, . . . ) having the same configuration and connected in parallel with each other.
摘要翻译：流水线式AD转换器（1）包括多个转换级（11,11 ...）。在每个转换级中，模数转换电路（101）将来自前级的输入电压（Vin）转换为数字代码（Dout）。数模转换电路（102）将由模数转换电路获得的数字代码转换为中间电压（Vda）。充电操作电路（103）具有用于对输入电压进行采样的电容器部（C1，C2）以及用于放大由电容器部分采样的输入电压和由数模转换电路获得的中间电压的混合电压的放大器部分（104）。放大器部分（104）包括具有相同配置并且彼此并联的多个运算放大器（amp1，amp1 ...）。

8. 发明申请

US20080315933A1 PULSE SYNTHESIS CIRCUIT 有权
标题翻译：脉冲合成电路
公开(公告)号：US20080315933A1
公开(公告)日：2008-12-25
申请号：US12133901
申请日：2008-06-05
申请人： Shiro Sakiyama , Yusuke Tokunaga , Shiro Dosho , Akinori Matsumoto , Takashi Morie , Kazuaki Sogawa , Yukihiro Sasagawa , Masaya Sumita
发明人： Shiro Sakiyama , Yusuke Tokunaga , Shiro Dosho , Akinori Matsumoto , Takashi Morie , Kazuaki Sogawa , Yukihiro Sasagawa , Masaya Sumita
IPC分类号： H03K3/00
CPC分类号： H03K5/00006 , H03K5/13
摘要： A high-level period of each of n first pulse signals partially or wholly overlaps a period during which all of n second pulse signals are at the low level. A high-level period of each of the n second pulse signals partially or wholly overlaps a period during which all of the n first pulse signals are at the low level. Each of n first drive transistors includes a source connected to a ground node, a drain connected to a first node, and a gate receiving a corresponding one of the first pulse signals. Each of n second drive transistors includes a source connected to the ground node, a drain connected to a second node, and a gate receiving a corresponding one of the second pulse signals. A current mirror circuit allows a current corresponding to a current flowing through the second node to flow through the first node.
摘要翻译： n个第一脉冲信号中的每一个的高电平周期部分或全部与在所有n个第二脉冲信号都处于低电平的期间重叠。 n个第二脉冲信号中的每一个的高电平周期部分地或完全地重叠在所有n个第一脉冲信号处于低电平的时段。 n个第一驱动晶体管中的每一个包括连接到接地节点的源极，连接到第一节点的漏极以及接收相应的一个第一脉冲信号的栅极。 n个第二驱动晶体管中的每一个包括连接到接地节点的源极，连接到第二节点的漏极和接收相应的一个第二脉冲信号的栅极。电流镜电路允许对应于流过第二节点的电流的电流流过第一节点。

9. 发明授权

US07327182B2 Switched capacitor filter and feedback system 有权
标题翻译：开关电容滤波器和反馈系统
公开(公告)号：US07327182B2
公开(公告)日：2008-02-05
申请号：US11396464
申请日：2006-04-04
申请人： Shiro Dosho , Yusuke Tokunaga , Takashi Morie
发明人： Shiro Dosho , Yusuke Tokunaga , Takashi Morie
IPC分类号： G06F7/64
CPC分类号： H03H19/004 , H03D13/004 , H03L7/0891 , H03L7/093 , H03L7/18
摘要： A switched capacitor filter comprises three switched capacitor circuits. Each switched capacitor circuit has a capacitance. A first state that the capacitance is connected to an input end of a current signal, a second state that the capacitance is connected to an output end of a voltage signal, and a third state that the capacitance is connected to a side of a filter capacitance, are cycled. These three switched capacitor circuits are operated under an interleave control so that the first to third states do not each overlap between the three switched capacitor circuits.
摘要翻译：开关电容滤波器包括三个开关电容器电路。每个开关电容电路具有电容。电容连接到电流信号的输入端的第一状态，电容连接到电压信号的输出端的第二状态，以及电容连接到滤波电容的一侧的第三状态，循环。这三个开关电容器电路在交错控制下操作，使得第一至第三状态在三个开关电容器电路之间不重叠。

10. 发明授权

US07271648B2 Ladder filter, analog equalizer and signal readout system 有权
标题翻译：梯形滤波器，模拟均衡器和信号读出系统
公开(公告)号：US07271648B2
公开(公告)日：2007-09-18
申请号：US10680129
申请日：2003-10-08
申请人： Shiro Dosho , Takashi Morie
发明人： Shiro Dosho , Takashi Morie
IPC分类号： H03K5/00
CPC分类号： G11B20/10009 , H03H11/04 , H03H11/486 , H03H11/50
摘要： A ladder filter includes multiple inductor sections, each including voltage-controlled current sources and capacitors. A second signal input terminal is provided for the filter separately from an ordinary signal input terminal and a signal, which has been input through the second terminal, is supplied to one of the voltage-controlled current sources by way of a gain calculator. By adjusting the gain obtained by the gain calculator to an appropriate value, the ladder filter can make the numerator of its transfer function freely definable.
摘要翻译：梯形滤波器包括多个电感器部分，每个电路部分包括压控电流源和电容器。与普通信号输入端分开设置用于滤波器的第二信号输入端子，并且已经通过第二端子输入的信号通过增益计算器提供给一个压控电流源。通过将增益计算器获得的增益调整到适当的值，梯形滤波器可以使其传递函数的分子自由定义。

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