公开(公告)号：US07609980B2

公开(公告)日：2009-10-27

申请号：US10585458

申请日：2005-09-28

申请人： Masamichi Nogami ,  Junichi Nakagawa ,  Masaki Noda ,  Toyoaki Uo

发明人： Masamichi Nogami ,  Junichi Nakagawa ,  Masaki Noda ,  Toyoaki Uo

IPC分类号： H04B10/06

CPC分类号： H04L25/061 ,  H03G3/3084 ,  H04B10/6931 ,  H04B10/695

摘要： A first average detecting circuit detects an average of output signals of a pre-amplifying unit that controls an amplification gain based on a result of comparison between an output of the first average detecting circuit and a predetermined reference voltage. A discriminating circuit receives an output signal of the pre-amplifying unit as an input signal and performs a signal discrimination of the input signal based on a threshold. A second average detecting circuit detects an average of input signals to the discriminating circuit. The discriminating circuit receives an output of the second average detecting circuit as the threshold.

摘要翻译： 第一平均检测电路基于第一平均检测电路的输出与预定参考电压之间的比较结果来检测控制放大增益的预放大单元的输出信号的平均值。 识别电路接收预放大单元的输出信号作为输入信号，并且基于阈值执行输入信号的信号鉴别。 第二平均检测电路检测到鉴别电路的输入信号的平均值。 识别电路接收第二平均检测电路的输出作为阈值。

公开(公告)号：US20070098416A1

公开(公告)日：2007-05-03

申请号：US10585458

申请日：2005-09-28

申请人： Masamichi Nogami ,  Junichi Nakagawa ,  Masaki Noda ,  Toyoaki Uo

发明人： Masamichi Nogami ,  Junichi Nakagawa ,  Masaki Noda ,  Toyoaki Uo

IPC分类号： H04B10/06

CPC分类号： H04L25/061 ,  H03G3/3084 ,  H04B10/6931 ,  H04B10/695

摘要： A first average detecting circuit detects an average of output signals of a pre-amplifying unit that controls an amplification gain based on a result of comparison between an output of the first average detecting circuit and a predetermined reference voltage. A discriminating circuit receives an output signal of the pre-amplifying unit as an input signal and performs a signal discrimination of the input signal based on a threshold. A second average detecting circuit detects an average of input signals to the discriminating circuit. The discriminating circuit receives an output of the second average detecting circuit as the threshold.

摘要翻译： 第一平均检测电路基于第一平均检测电路的输出与预定参考电压之间的比较结果来检测控制放大增益的预放大单元的输出信号的平均值。 识别电路接收预放大单元的输出信号作为输入信号，并且基于阈值执行输入信号的信号鉴别。 第二平均检测电路检测到鉴别电路的输入信号的平均值。 识别电路接收第二平均检测电路的输出作为阈值。

公开(公告)号：US08704565B2

公开(公告)日：2014-04-22

申请号：US13601636

申请日：2012-08-31

申请人： Toyoaki Uo

发明人： Toyoaki Uo

IPC分类号： H03L7/06

CPC分类号： H03L7/095 ,  H03K5/153 ,  H03L7/0816

摘要： According to one embodiment, a lock detection circuit includes an initial state response circuit. The initial state response circuit is configured to output a third control signal to delay lines and cause a charge pump to stop an output of a second control signal when a pulse width modulation signal is not input, the third control signal is configured to control a delay amount to cause a delay amount of an entire delay circuit to be within one selected from a range in which an OVER signal generation circuit is operable, a range in which an UNDER signal generation circuit is operable, and a range that is greater than an UNDER threshold and less than an OVER threshold.

摘要翻译： 根据一个实施例，锁定检测电路包括初始状态响应电路。 初始状态响应电路被配置为当不输入脉宽调制信号时，将第三控制信号输出到延迟线并使电荷泵停止第二控制信号的输出，第三控制信号被配置为控制延迟 相当于导致整个延迟电路的延迟量在从OVER信号产生电路可操作的范围内选择的范围内，UNDER信号产生电路可操作的范围以及大于UNDER的范围 阈值并小于OVER阈值。

公开(公告)号：US20100309032A1

公开(公告)日：2010-12-09

申请号：US12796157

申请日：2010-06-08

申请人： Toyoaki Uo ,  Hisami Saitou ,  Atsushi Iwata ,  Yoshitaka Murasaka ,  Toshifumi Imamura

发明人： Toyoaki Uo ,  Hisami Saitou ,  Atsushi Iwata ,  Yoshitaka Murasaka ,  Toshifumi Imamura

IPC分类号： H03M1/00 ,  H03M3/00

CPC分类号： H03M3/34 ,  H03M3/43 ,  H03M3/454

摘要： An analog-to-digital converter includes a first switch circuit, a first integrator, a second switch circuit, a second integrator, a quantizer and a digital-to-analog converter. The first switch circuit receives an external analog signal, outputs the analog signal in reverse phase, and outputs the analog signal in positive phase. The first integrator receives and integrates the analog signal with cross-coupling. The second switch circuit outputs an output of the first integrator and a common mode output potential of the first integrator. The second integrator samples and integrates an output of the second switch circuit. The quantizer single-bit-quantizes an output of the second integrator to provide the output as a digital signal output. The digital-to-analog converter receives an output of the quantizer and provides the output as an analog signal output. Each of the first and second integrators receives and integrates an output of the digital-to-analog converter with cross-coupling.

摘要翻译： 模数转换器包括第一开关电路，第一积分器，第二开关电路，第二积分器，量化器和数模转换器。 第一开关电路接收外部模拟信号，反相输出模拟信号，并以正相输出模拟信号。 第一个积分器接收和积分模拟信号与交叉耦合。 第二开关电路输出第一积分器的输出和第一积分器的共模输出电位。 第二个积分器对第二开关电路的输出进行采样和积分。 量化器对第二积分器的输出进行单比特量化，以将输出提供为数字信号输出。 数模转换器接收量化器的输出，并将输出提供为模拟信号输出。 第一和第二积分器中的每一个接收和积分数模转换器的输出与交叉耦合。

公开(公告)号：US07635837B2

公开(公告)日：2009-12-22

申请号：US12047718

申请日：2008-03-13

申请人： Toyoaki Uo ,  Shigeyuki Sakura

发明人： Toyoaki Uo ,  Shigeyuki Sakura

IPC分类号： H01J40/14 ,  H03F3/08

CPC分类号： H03F3/087 ,  H03F3/45098

摘要： A light receiving circuit includes: a first transimpedance amplifier configured to convert an input signal to a voltage signal, the input signal being current-converted by a first photodiode; a second transimpedance amplifier connected to a light-shielded second photodiode, and being configured to output a reference voltage; a differential amplifier; a transconductance amplifier; a voltage source; and a conversion element. The differential amplifier has a first terminal and a second terminal, and amplifies a difference between the voltage signal inputted to the first terminal and a signal inputted to the second terminal. The transconductance amplifier receives as input a branch of the voltage signal and outputs a current signal to the second terminal. The voltage source superimposes an offset voltage on the output voltage of the second transimpedance amplifier. The conversion element is provided between the voltage source and the second terminal, and voltage-converts the current signal.

摘要翻译： 光接收电路包括：第一跨阻抗放大器，被配置为将输入信号转换为电压信号，所述输入信号由第一光电二极管电流转换; 连接到光屏蔽的第二光电二极管的第二跨阻放大器，被配置为输出参考电压; 差分放大器; 跨导放大器; 电压源; 和转换元件。 差分放大器具有第一端子和第二端子，并且放大输入到第一端子的电压信号与输入到第二端子的信号之间的差。 跨导放大器作为输入接收电压信号的分支，并将电流信号输出到第二端子。 电压源将偏移电压叠加在第二跨阻抗放大器的输出电压上。 转换元件设置在电压源和第二端子之间，并对电流信号进行电压转换。

公开(公告)号：US08207879B2

公开(公告)日：2012-06-26

申请号：US12796157

申请日：2010-06-08

申请人： Toyoaki Uo ,  Hisami Saitou ,  Atsushi Iwata ,  Yoshitaka Murasaka ,  Toshifumi Imamura

发明人： Toyoaki Uo ,  Hisami Saitou ,  Atsushi Iwata ,  Yoshitaka Murasaka ,  Toshifumi Imamura

IPC分类号： H03M1/00

CPC分类号： H03M3/34 ,  H03M3/43 ,  H03M3/454

摘要： An analog-to-digital converter includes a first switch circuit, a first integrator, a second switch circuit, a second integrator, a quantizer and a digital-to-analog converter. The first switch circuit receives an external analog signal, outputs the analog signal in reverse phase, and outputs the analog signal in positive phase. The first integrator receives and integrates the analog signal with cross-coupling. The second switch circuit outputs an output of the first integrator and a common mode output potential of the first integrator. The second integrator samples and integrates an output of the second switch circuit. The quantizer single-bit-quantizes an output of the second integrator to provide the output as a digital signal output. The digital-to-analog converter receives an output of the quantizer and provides the output as an analog signal output. Each of the first and second integrators receives and integrates an output of the digital-to-analog converter with cross-coupling.

摘要翻译： 模数转换器包括第一开关电路，第一积分器，第二开关电路，第二积分器，量化器和数模转换器。 第一开关电路接收外部模拟信号，反相输出模拟信号，并以正相输出模拟信号。 第一个积分器接收和积分模拟信号与交叉耦合。 第二开关电路输出第一积分器的输出和第一积分器的共模输出电位。 第二个积分器对第二开关电路的输出进行采样和积分。 量化器对第二积分器的输出进行单比特量化，以将输出提供为数字信号输出。 数模转换器接收量化器的输出，并将输出提供为模拟信号输出。 第一和第二积分器中的每一个接收和积分数模转换器的输出与交叉耦合。

公开(公告)号：US20100200734A1

公开(公告)日：2010-08-12

申请号：US12699209

申请日：2010-02-03

申请人： Toyoaki Uo

发明人： Toyoaki Uo

IPC分类号： H01L31/09 ,  G05F3/02

CPC分类号： H01L31/09 ,  G01J1/02 ,  G01J1/0228 ,  G01J1/44

摘要： A power supply circuit includes: a start-up circuit provided on a semiconductor substrate and configured to convert an optical signal to an electrical signal; and a bias circuit provided on the semiconductor substrate and being in a non-start-up state at power-on, the start-up circuit including: a p-type semiconductor region; and an n-type semiconductor region provided in contact with the p-type semiconductor region, the p-type semiconductor region being electrically connected to the bias circuit, the n-type semiconductor region being electrically connected to a power supply of the bias circuit, and the bias circuit entering a start-up state by a current flowing in the start-up circuit.

摘要翻译： 电源电路包括：启动电路，设置在半导体衬底上并被配置为将光信号转换成电信号; 以及设置在所述半导体基板上并且在通电时处于非启动状态的偏置电路，所述启动电路包括：p型半导体区域; 以及与p型半导体区域接触地设置的n型半导体区域，p型半导体区域电连接到偏置电路，n型半导体区域电连接到偏置电路的电源， 并且偏置电路通过在启动电路中流动的电流进入启动状态。

公开(公告)号：US20100019132A1

公开(公告)日：2010-01-28

申请号：US12410721

申请日：2009-03-25

申请人： Toyoaki Uo

发明人： Toyoaki Uo

IPC分类号： H01J40/14

CPC分类号： H03F1/08 ,  H03F1/30 ,  H03F3/087 ,  H03F2200/447 ,  H03F2200/78

摘要： An optical-receiving circuit includes a first photodiode converting an optical signal into a current signal, a first trans-impedance amplifier to which a first power supply voltage of Vreg is supplied and which has a negative feedback resistor and to which the current signal is input and which outputs a voltage signal, and an output circuit to which the voltage signal output from the first trans-impedance amplifier is input and which outputs a voltage signal to the outside. A temperature coefficient of a voltage of (Vreg-MVbe) is positive, in which Vbe is a base-emitter voltage of a transistor contained in the first trans-impedance amplifier and M is a coefficient that does not depend on the temperature.

摘要翻译： 光接收电路包括将光信号转换成电流信号的第一光电二极管，第一跨阻放大器，其中Vreg的第一电源电压被提供给第一反相放大器，并且具有负反馈电阻器，并且输入电流信号 并且输出电压信号;输出电路，从第一跨阻抗放大器输出的电压信号输入到该输出电路，并向外部输出电压信号。 （Vreg-MVbe）的电压的温度系数为正，其中Vbe是包含在第一跨阻抗放大器中的晶体管的基极 - 发射极电压，M是不依赖于温度的系数。

公开(公告)号：US20080230683A1

公开(公告)日：2008-09-25

申请号：US12047718

申请日：2008-03-13

申请人： Toyoaki Uo ,  Shigeyuki Sakura

发明人： Toyoaki Uo ,  Shigeyuki Sakura

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F3/45098

摘要： A light receiving circuit includes: a first transimpedance amplifier configured to convert an input signal to a voltage signal, the input signal being current-converted by a first photodiode; a second transimpedance amplifier connected to a light-shielded second photodiode, and being configured to output a reference voltage; a differential amplifier; a transconductance amplifier; a voltage source; and a conversion element. The differential amplifier has a first terminal and a second terminal, and amplifies a difference between the voltage signal inputted to the first terminal and a signal inputted to the second terminal. The transconductance amplifier receives as input a branch of the voltage signal and outputs a current signal to the second terminal. The voltage source superimposes an offset voltage on the output voltage of the second transimpedance amplifier. The conversion element is provided between the voltage source and the second terminal, and voltage-converts the current signal.

摘要翻译： 光接收电路包括：第一跨阻抗放大器，被配置为将输入信号转换为电压信号，所述输入信号由第一光电二极管电流转换; 连接到光屏蔽的第二光电二极管的第二跨阻放大器，被配置为输出参考电压; 差分放大器; 跨导放大器; 电压源; 和转换元件。 差分放大器具有第一端子和第二端子，并且放大输入到第一端子的电压信号与输入到第二端子的信号之间的差。 跨导放大器作为输入接收电压信号的分支，并将电流信号输出到第二端子。 电压源将偏移电压叠加在第二跨阻抗放大器的输出电压上。 转换元件设置在电压源和第二端子之间，并对电流信号进行电压转换。

公开(公告)号：US08761599B2

公开(公告)日：2014-06-24

申请号：US13424338

申请日：2012-03-19

申请人： Toyoaki Uo

发明人： Toyoaki Uo

IPC分类号： H04B17/00

CPC分类号： H04B10/802

摘要： According to an embodiment, a semiconductor device includes an analog/digital conversion unit, a pulse width modulation unit outputting a transmission signal, the transmission signal being a pulse pattern corresponding to a digital signal output from the analog/digital conversion unit, a reference signal generation unit generating a reference signal, the reference signal being a fixed pulse pattern. The device includes a first control unit selecting one of the transmission signal and the reference signal, a light emitting element drive unit outputting a drive current based on the transmission signal or the reference signal, a light emitting element driven by the light emitting element drive unit. The device includes an optical receiving unit converting the optical signal into a voltage signal, and a demodulation unit demodulating the voltage signal into a digital signal based on the transmission signal or the reference signal.

摘要翻译： 根据实施例，半导体器件包括模拟/数字转换单元，输出发送信号的脉宽调制单元，作为与从模拟/数字转换单元输出的数字信号相对应的脉冲模式的发送信号，参考信号 生成单元生成参考信号，参考信号是固定的脉冲图形。 该装置包括选择发送信号和参考信号之一的第一控制单元，基于发送信号或参考信号输出驱动电流的发光元件驱动单元，由发光元件驱动单元驱动的发光元件 。 该装置包括将光信号转换为电压信号的光接收单元，以及基于发送信号或参考信号将电压信号解调为数字信号的解调单元。