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1. 发明授权

US08289075B2 Class-D amplifier 有权
标题翻译： D类放大器
公开(公告)号：US08289075B2
公开(公告)日：2012-10-16
申请号：US12807759
申请日：2010-09-14
申请人： Tatsuya Kishii , Moritaka Iyoda , Hirotoshi Tsuchiya , Toshio Maejima , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
发明人： Tatsuya Kishii , Moritaka Iyoda , Hirotoshi Tsuchiya , Toshio Maejima , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
IPC分类号： H03F1/14 , H03F3/217
CPC分类号： H03F3/217
摘要： A class-D amplifier for generating from an input signal a digital signal for driving a load, includes an output limit instruction generating section that detects that the digital signal falls outside a limit range and that outputs an output limit instruction signal, an attenuation instruction pulse generating section that includes an integrator for integrating the output limit instruction signal and that outputs a periodical attenuation instruction pulse having pulse width corresponding to an integrated value in the integrator, an attenuating section provided in an input path for the input signal and that attenuates the input signal based on the attenuation instruction pulse, and a mute control section that controls the integrated value in the integrator independently of the output limit instruction signal to control an amount of the attenuation of the attenuating section applied to the input signal.
摘要翻译：用于从输入信号产生用于驱动负载的数字信号的D类放大器包括：输出限制指令产生部分，其检测数字信号超出极限范围并输出输出限制指令信号，衰减指令脉冲生成部分，其包括用于积分输出限制指令信号的积分器，并且在积分器中输出具有与积分值对应的脉冲宽度的周期性衰减指令脉冲;衰减部分，设置在输入信号的输入路径中，并且衰减输入基于衰减指令脉冲的信号和静音控制部分，其独立于输出限制指令信号来控制积分器中的积分值，以控制施加到输入信号的衰减部分的衰减量。

2. 发明申请

US20110063027A1 Class-D amplifier 有权
标题翻译： D类放大器
公开(公告)号：US20110063027A1
公开(公告)日：2011-03-17
申请号：US12807759
申请日：2010-09-14
申请人： Tatsuya Kishii , Moritaka Iyoda , Hirotoshi Tsuchiya , Toshio Maejima , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
发明人： Tatsuya Kishii , Moritaka Iyoda , Hirotoshi Tsuchiya , Toshio Maejima , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
IPC分类号： H03F3/217
CPC分类号： H03F3/217
摘要： A class-D amplifier for generating from an input signal a digital signal for driving a load, includes an output limit instruction generating section that detects that the digital signal falls outside a limit range and that outputs an output limit instruction signal, an attenuation instruction pulse generating section that includes an integrator for integrating the output limit instruction signal and that outputs a periodical attenuation instruction pulse having pulse width corresponding to an integrated value in the integrator, an attenuating section provided in an input path for the input signal and that attenuates the input signal based on the attenuation instruction pulse, and a mute control section that controls the integrated value in the integrator independently of the output limit instruction signal to control an amount of the attenuation of the attenuating section applied to the input signal.
摘要翻译：用于从输入信号产生用于驱动负载的数字信号的D类放大器包括：输出限制指令产生部分，其检测数字信号超出极限范围并输出输出限制指令信号，衰减指令脉冲生成部分，其包括用于积分输出限制指令信号的积分器，并且在积分器中输出具有与积分值对应的脉冲宽度的周期性衰减指令脉冲;衰减部分，设置在输入信号的输入路径中，并且衰减输入基于衰减指令脉冲的信号和静音控制部分，其独立于输出限制指令信号来控制积分器中的积分值，以控制施加到输入信号的衰减部分的衰减量。

3. 发明申请

US20110068866A1 Amplifying device 有权
标题翻译：放大装置
公开(公告)号：US20110068866A1
公开(公告)日：2011-03-24
申请号：US12807834
申请日：2010-09-15
申请人： Tatsuya Kishii , Hirotoshi Tsuchiya , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
发明人： Tatsuya Kishii , Hirotoshi Tsuchiya , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
IPC分类号： H03G3/20
CPC分类号： H03G3/004 , H03F1/0211 , H03F2200/507 , H03F2200/511 , H03G1/0088
摘要： An amplifying device includes a selecting section that selects one of a first power source potential and a second power source potential which are different from each other, a potential generating circuit that generates a third power source potential from the power source potential selected by the selecting section, an amplifier that operates with supply of the first power source potential and the third power source potential, and a controlling circuit that variably controls a target to be selected by the selecting section in accordance with at least one of an amplitude of a signal on an input side of the amplifier, an amplitude of a signal on an output side of the amplifier, and the third power source potential.
摘要翻译：放大装置包括选择部，其选择彼此不同的第一电源电位和第二电源电位中的一个;电位发生电路，从由选择部选择的电源电位产生第三电源电位，具有第一电源电位和第三电源电位的供给的放大器，以及控制电路，其根据所述第一电源电位和所述第三电源电位的信号的幅度中的至少一个可变地控制由所述选择部选择的目标放大器的输入侧，放大器的输出侧的信号的幅度和第三电源电位。

4. 发明授权

US08159305B2 Amplifying device 有权
标题翻译：放大装置
公开(公告)号：US08159305B2
公开(公告)日：2012-04-17
申请号：US12807834
申请日：2010-09-15
申请人： Tatsuya Kishii , Hirotoshi Tsuchiya , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
发明人： Tatsuya Kishii , Hirotoshi Tsuchiya , Masayoshi Nakamura , Masato Miyazaki , Akihisa Himeno
IPC分类号： H03F3/04
CPC分类号： H03G3/004 , H03F1/0211 , H03F2200/507 , H03F2200/511 , H03G1/0088
摘要： An amplifying device includes a selecting section that selects one of a first power source potential and a second power source potential which are different from each other, a potential generating circuit that generates a third power source potential from the power source potential selected by the selecting section, an amplifier that operates with supply of the first power source potential and the third power source potential, and a controlling circuit that variably controls a target to be selected by the selecting section in accordance with at least one of an amplitude of a signal on an input side of the amplifier, an amplitude of a signal on an output side of the amplifier, and the third power source potential.
摘要翻译：放大装置包括选择部，其选择彼此不同的第一电源电位和第二电源电位中的一个;电位发生电路，从由选择部选择的电源电位产生第三电源电位，具有第一电源电位和第三电源电位的供给的放大器，以及控制电路，其根据所述第一电源电位和所述第三电源电位的信号的幅度中的至少一个可变地控制由所述选择部选择的目标放大器的输入侧，放大器的输出侧的信号的幅度和第三电源电位。

5. 发明授权

US07714653B2 Differential amplifier 有权
标题翻译：差分放大器
公开(公告)号：US07714653B2
公开(公告)日：2010-05-11
申请号：US12286579
申请日：2008-10-01
申请人： Hirotoshi Tsuchiya , Shinji Yaezawa , Yuya Hashimoto , Toru Nakamori , Tatsuya Kishii
发明人： Hirotoshi Tsuchiya , Shinji Yaezawa , Yuya Hashimoto , Toru Nakamori , Tatsuya Kishii
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F1/52 , H03F2203/45352 , H03F2203/45594 , H03F2203/45674
摘要： A differential amplifier includes: a constant current source; first and second field effect transistors whose respective gates are imparted with positive-phase and negative-phase input signals and whose sources commonly connected to each other, the constant current source being connected to a common node of the sources; first and second loads serving as current paths for respective drain currents of the first and second field effect transistors; an amplifying unit which outputs positive-phase and negative-phase output signals which are amplified in response to the respective drain voltages of the first and second field effect transistors; and a current path generator which generates first and second current paths parallel to the respective first and second field effect transistors for a predetermined period of time at the time of start-up of the differential amplifier.
摘要翻译：差分放大器包括：恒流源; 第一和第二场效应晶体管，其各个栅极被施加正相和负相输入信号，并且其源极彼此共同连接，恒流源连接到源的公共节点; 第一和第二负载用作第一和第二场效应晶体管的相应漏极电流的电流路径; 放大单元，其输出响应于第一和第二场效应晶体管的相应漏极电压而被放大的正相和负相输出信号; 以及电流路径发生器，其在差分放大器启动时产生平行于相应的第一和第二场效应晶体管预定时间段的第一和第二电流路径。

6. 发明申请

US20090091386A1 Differential amplifier 有权
标题翻译：差分放大器
公开(公告)号：US20090091386A1
公开(公告)日：2009-04-09
申请号：US12286579
申请日：2008-10-01
申请人： Hirotoshi Tsuchiya , Shinji Yaezawa , Yuya Hashimoto , Toru Nakamori , Tatsuya Kishii
发明人： Hirotoshi Tsuchiya , Shinji Yaezawa , Yuya Hashimoto , Toru Nakamori , Tatsuya Kishii
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F1/52 , H03F2203/45352 , H03F2203/45594 , H03F2203/45674
摘要： A differential amplifier includes: a constant current source; first and second field effect transistors whose respective gates are imparted with positive-phase and negative-phase input signals and whose sources commonly connected to each other, the constant current source being connected to a common node of the sources; first and second loads serving as current paths for respective drain currents of the first and second field effect transistors; an amplifying unit which outputs positive-phase and negative-phase output signals which are amplified in response to the respective drain voltages of the first and second field effect transistors; and a current path generator which generates first and second current paths parallel to the respective first and second field effect transistors for a predetermined period of time at the time of start-up of the differential amplifier.
摘要翻译：差分放大器包括：恒流源; 第一和第二场效应晶体管，其各个栅极被赋予正相和负相输入信号，并且其源极彼此共同连接，恒流源连接到源的公共节点; 第一和第二负载用作第一和第二场效应晶体管的相应漏极电流的电流路径; 放大单元，其输出响应于第一和第二场效应晶体管的相应漏极电压被放大的正相和负相输出信号; 以及电流路径发生器，其在差分放大器启动时产生平行于相应的第一和第二场效应晶体管预定时间段的第一和第二电流路径。

7. 发明授权

US08502602B2 Class-D amplifier circuit 有权
标题翻译： D类放大器电路
公开(公告)号：US08502602B2
公开(公告)日：2013-08-06
申请号：US13330019
申请日：2011-12-19
申请人： Katsuya Hirano , Hirotoshi Tsuchiya
发明人： Katsuya Hirano , Hirotoshi Tsuchiya
IPC分类号： H03F3/217
CPC分类号： H03F3/217
摘要： A class-D amplifier circuit includes an amplifier that generates pulse-width modulated output signals according to input signals which have phases reverse to each other and are supplied to a first input end and a second input end, a first transistor interposed between a first input path extending from the first input end to the amplifier and a second input path extending from the second input end to the amplifier, and a voltage applying circuit that applies a control voltage corresponding to a predetermined value to a control terminal of the first transistor so that a current flowing between both ends of the first transistor increases in accordance with increase of levels of the input signals within a range in which the levels of the input signals are higher than the predetermined value.
摘要翻译： D类放大器电路包括放大器，该放大器根据输入信号产生脉冲宽度调制的输出信号，该输入信号具有彼此相反的相位并被提供给第一输入端和第二输入端，第一晶体管插在第一输入端从第一输入端延伸到放大器的第二输入路径和从第二输入端延伸到放大器的第二输入路径;以及电压施加电路，其将对应于预定值的控制电压施加到第一晶体管的控制端，使得根据输入信号的电平高于预定值的范围内的输入信号电平的增加，在第一晶体管的两端之间流动的电流增加。

8. 发明申请

US20100219891A1 Class-D amplifier 有权
标题翻译： D类放大器
公开(公告)号：US20100219891A1
公开(公告)日：2010-09-02
申请号：US12660368
申请日：2010-02-25
申请人： Hirotoshi Tsuchiya
发明人： Hirotoshi Tsuchiya
IPC分类号： H03F3/217
CPC分类号： H03F3/2173 , H03F1/3205 , H03G3/3021
摘要： A class-D amplifier includes a differential integrator that integrates a difference between an input signal and a feedback signal to output an integration value signal, a pulse width modulation circuit that outputs a digital signal having a pulse width corresponding to a level of the integration value signal, an output buffer that drives a load based on the digital signal, a feedback section that feeds an output signal of the output buffer into the differential integrator as the feedback signal, a clamp section that performs a clamping of limiting the level of the integration value signal within a specified level range, an attenuation section that attenuates the level of the input signal to be input to the differential integrator in response to an attenuation command, and an attenuation control section that outputs the attenuation command to the attenuation section in response to the clamping performed by the clamp section.
摘要翻译： D类放大器包括：积分器，其对输入信号和反馈信号之间的差进行积分以输出积分值信号;脉宽调制电路，输出具有对应于积分值的电平的脉冲宽度的数字信号; 信号，基于数字信号驱动负载的输出缓冲器，将输出缓冲器的输出信号作为反馈信号馈送到差分积分器的反馈部分，执行钳位以限制积分电平的钳位部分响应于衰减指令衰减要输入到差分积分器的输入信号的电平的衰减部分;以及衰减控制部分，响应于衰减部分而将衰减命令输出到衰减部分由夹紧部进行夹持。

9. 发明申请

US20090091355A1 Amplifier 有权
标题翻译：放大器
公开(公告)号：US20090091355A1
公开(公告)日：2009-04-09
申请号：US12286948
申请日：2008-10-03
申请人： Masayuki Iwamatsu , Hirotoshi Tsuchiya
发明人： Masayuki Iwamatsu , Hirotoshi Tsuchiya
IPC分类号： H03K5/153
CPC分类号： H03G3/3005 , H03G7/08
摘要： An amplifier includes: an operation amplifier including a positive input terminal and a negative input terminal; and a detector which detects that a difference between a voltage of the positive input terminal and a voltage of the negative input terminal is equal to or exceeds a predetermined value and outputs a detection signal.
摘要翻译：放大器包括：运算放大器，包括正输入端和负输入端; 以及检测器，其检测正输入端子的电压与负输入端子的电压之间的差异等于或超过预定值，并输出检测信号。

10. 发明申请

US20120154044A1 Class-D Amplifier Circuit 有权
标题翻译： D类放大器电路
公开(公告)号：US20120154044A1
公开(公告)日：2012-06-21
申请号：US13330019
申请日：2011-12-19
申请人： Katsuya HIRANO , Hirotoshi Tsuchiya
发明人： Katsuya HIRANO , Hirotoshi Tsuchiya
IPC分类号： H03F3/217
CPC分类号： H03F3/217
摘要： A class-D amplifier circuit includes an amplifier that generates pulse-width modulated output signals according to input signals which have phases reverse to each other and are supplied to a first input end and a second input end, a first transistor interposed between a first input path extending from the first input end to the amplifier and a second input path extending from the second input end to the amplifier, and a voltage applying circuit that applies a control voltage corresponding to a predetermined value to a control terminal of the first transistor so that a current flowing between both ends of the first transistor increases in accordance with increase of levels of the input signals within a range in which the levels of the input signals are higher than the predetermined value.
摘要翻译： D类放大器电路包括放大器，该放大器根据输入信号产生脉冲宽度调制的输出信号，该输入信号具有彼此相反的相位并被提供给第一输入端和第二输入端，第一晶体管插在第一输入端从第一输入端延伸到放大器的第二输入路径和从第二输入端延伸到放大器的第二输入路径;以及电压施加电路，其将对应于预定值的控制电压施加到第一晶体管的控制端，使得根据输入信号的电平高于预定值的范围内的输入信号电平的增加，在第一晶体管的两端之间流动的电流增加。

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