公开(公告)号：US10298419B2

公开(公告)日：2019-05-21

申请号：US15795927

申请日：2017-10-27

申请人： Yuji Watabe ,  Hiroaki Kyogoku ,  Nobunari Tsukamoto

发明人： Yuji Watabe ,  Hiroaki Kyogoku ,  Nobunari Tsukamoto

IPC分类号： H03L5/00 ,  H04L25/02 ,  H03K19/0185 ,  H03K17/687 ,  H03L7/093 ,  G06F1/06 ,  H03K5/135 ,  H03L7/081

摘要： A low voltage differential signaling driver includes at least one output circuit, a first control circuit, and a second control circuit. The output circuit includes a first input terminal to receive a first input signal, a second input terminal to receive a second input signal, a first output terminal to output a first output signal, a second output terminal to output a second output signal, and first to sixth transistors. The first control circuit controls a voltage of a control terminal of the first transistor to make a voltage of the first output signal equal to a first reference voltage when the first input signal has a first value. The second control circuit controls a voltage of a control terminal of the second transistor to make the voltage of the first output signal equal to a second reference voltage when the first input signal has a second value.

公开(公告)号：US08928714B2

公开(公告)日：2015-01-06

申请号：US13051256

申请日：2011-03-18

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： B41J2/385 ,  B41J2/41 ,  B41J2/435 ,  B41J2/47 ,  B41J2/455 ,  G02B26/12 ,  G03G15/043 ,  H01S5/042 ,  H01S5/06

CPC分类号： B41J2/471 ,  G02B26/127 ,  G03G15/04072 ,  G03G15/043 ,  G03G15/0435 ,  G03G2215/0404 ,  H01S5/042 ,  H01S5/0617

摘要： A semiconductor laser driver to drive at least one semiconductor laser, the semiconductor laser including a storage device, an emission-intensity setting device, and a drive circuit. The storage device stores emission-intensity switching data to control light-emission intensity of the semiconductor laser, the emission-intensity setting device sets the light-emission intensity based on the emission-intensity switching data stored in the storage device, and, the drive circuit generates a driving current to drive the semiconductor laser based on the light-emission intensity set in the emission-intensity setting device.

摘要翻译： 驱动至少一个半导体激光器的半导体激光驱动器，包括存储装置的发光强度设定装置和驱动电路的半导体激光器。 存储装置存储用于控制半导体激光器的发光强度的发射强度切换数据，发光强度设定装置基于存储在存储装置中的发光强度切换数据来设定发光强度，驱动 基于在发光强度设定装置中设定的发光强度，产生驱动电流来驱动半导体激光器。

公开(公告)号：US08724082B2

公开(公告)日：2014-05-13

申请号：US13040535

申请日：2011-03-04

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： G03B27/42

CPC分类号： G03B27/52 ,  H01S3/10

摘要： A semiconductor laser driver includes a light detection circuit to detect a quantity of light as a detected light emission intensity and output the detected light emission intensity to the control circuit, and a control circuit to control a light emission intensity for the semiconductor laser based on the detected light emission intensity and on a predetermined light emission intensity setting value. The light detection circuit includes a photoelectric conversion element to convert the quantity of light emitted from the semiconductor laser into an electrical current and output the converted electrical current, a current magnification setting circuit to amplify the electrical current output from the photoelectric conversion element to a predetermined amplified current at one of multiple different predetermined magnifications, a detection resistor to convert the amplified current output from the current magnification setting circuit into a voltage and output the voltage as the detected light emission intensity.

摘要翻译： 半导体激光驱动器包括：光检测电路，用于检测作为检测到的发光强度的光量，并将检测到的发光强度输出到控制电路;以及控制电路，用于基于所述控制电路控制半导体激光器的发光强度 检测到的发光强度和预定的发光强度设定值。 光检测电路包括光电转换元件，用于将从半导体激光器发射的光量转换成电流并输出转换的电流;电流倍率设置电路，用于将从光电转换元件输出的电流放大到预定的 在多个不同的预定放大倍数之一处的放大电流，将从当前倍率设置电路输出的放大电流转换成电压并将该电压作为检测的发光强度输出的检测电阻。

公开(公告)号：US20100290491A1

公开(公告)日：2010-11-18

申请号：US12810251

申请日：2008-12-15

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： H01S5/0683

CPC分类号： H01S5/042 ,  B41J2/442 ,  B41J2/471 ,  H01S5/06216

摘要： A disclosed laser diode driving device drives laser diodes with driving currents obtained by adding switch currents to corresponding bias currents and includes a common switch current generating circuit configured to generate a common switch current according to an input signal; switch current generating circuits provided for the corresponding laser diodes and configured to generate the switch currents based on the common switch current and input signals; switches configured to control the output of the switch currents to the corresponding laser diodes according to input signals; bias current generating circuits configured to generate the bias currents and output the generated bias currents to the corresponding laser diodes; and a control unit configured to detect the light intensities of the respective laser diodes and to control the common switch current generating circuit, the switch current generating circuits, and the switches to adjust the light intensities of the respective laser diodes.

摘要翻译： 所公开的激光二极管驱动装置通过将开关电流加到相应的偏置电流而获得的驱动电流来驱动激光二极管，并且包括公共的开关电流产生电路，其被配置为根据输入信号产生公共的开关电流; 为相应的激光二极管提供的开关电流产生电路，并且被配置为基于公共开关电流和输入信号产生开关电流; 开关，被配置为根据输入信号控制对相应的激光二极管的开关电流的输出; 配置为产生偏置电流并将产生的偏置电流输出到相应的激光二极管的偏置电流产生电路; 以及控制单元，被配置为检测各个激光二极管的光强度并控制公共开关电流产生电路，开关电流产生电路和开关以调节各个激光二极管的光强度。

公开(公告)号：US07693196B2

公开(公告)日：2010-04-06

申请号：US12173576

申请日：2008-07-15

申请人： Tomohiko Kamatani ,  Hiroaki Kyogoku

发明人： Tomohiko Kamatani ,  Hiroaki Kyogoku

IPC分类号： H01S3/00

CPC分类号： H01S5/042

摘要： A semiconductor laser driving unit is disclosed that includes a first part generating a bias current; a second part generating a first current for causing the semiconductor laser to emit light, and outputting the first current to the semiconductor laser in accordance with an input control signal; a third part performing initialization to detect a light emission characteristic of the semiconductor laser, and causing the second part to generate a second current of a value obtained from the detected light emission characteristic; and a fourth part causing the second part to generate the first current in which a set offset current is added to the second current. The first part detects the amount of light emission of the semiconductor laser, and generates and outputs the bias current so that the amount of light emission produced by the sum of the bias current and the first current is a predetermined value.

摘要翻译： 公开了一种半导体激光器驱动单元，其包括产生偏置电流的第一部分; 第二部分，产生用于使半导体激光器发光的第一电流，并且根据输入控制信号将第一电流输出到半导体激光器; 第三部分执行初始化以检测半导体激光器的发光特性，并使第二部分产生从检测到的发光特性获得的值的第二电流; 以及第四部分，其使得所述第二部分产生其中将所述偏移电流加到所述第二电流的所述第一电流。 第一部分检测半导体激光器的发光量，并产生并输出偏置电流，使得由偏置电流和第一电流之和产生的发光量为预定值。

公开(公告)号：US20060285564A1

公开(公告)日：2006-12-21

申请号：US11453927

申请日：2006-06-16

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： H01S3/00

CPC分类号： H01S5/06832 ,  H01S5/0427

摘要： A laser driving circuit configured to drive a semiconductor laser diode, which is less susceptible to noise interference and capable of achieving the control of laser light intensity with high accuracy. Respective circuit components in the laser driving circuit such as an amplifier circuit, a sample hold circuit, a voltage-to-current converter, and a switching circuit are all integrated into an integrated circuit. A capacitor included in the sample hold circuit is further provided as built-in in the integrated circuit, which is previously attached externally. In addition, by changing the resistance of a resistor which is externally connected between the bias current setting terminal of the amplifier circuit and the ground potential by way of a terminal of the integrated circuit, the current outputting capability of the amplifier circuit can be variably adjusted through the adjustment of the charging time of the capacitor. As a result, the response speed of a feedback control loop for controlling the light intensity of laser diode can be increased with less noise interference and high accuracy.

摘要翻译： 激光驱动电路，被配置为驱动不易受噪声干扰的半导体激光二极管，能够高精度地实现激光的强度控制。 诸如放大器电路，采样保持电路，电压 - 电流转换器和开关电路的激光器驱动电路中的各个电路部件都集成到集成电路中。 包含在采样保持电路中的电容器还被内置在集成电路中，该集成电路预先连接到外部。 此外，通过通过集成电路的端子改变外部连接在放大器电路的偏置电流设置端子和接地电位之间的电阻器的电阻，可以可变地调节放大器电路的电流输出能力 通过调节电容器的充电时间。 结果，用于控制激光二极管的光强度的反馈控制回路的响应速度可以以更少的噪声干扰和高精度来增加。

公开(公告)号：US20220381907A1

公开(公告)日：2022-12-01

申请号：US17739169

申请日：2022-05-09

申请人： Hiroaki KYOGOKU

发明人： Hiroaki KYOGOKU

IPC分类号： G01S15/89 ,  B06B1/02 ,  A61B8/00 ,  G01S7/52

摘要： An ultrasonic sensor includes an ultrasonic transducer; a first voltage output circuit to output a transmission voltage signal that oscillates between a first high voltage and a first low voltage, supplied to a first terminal of the ultrasonic transducer; a reception circuit to detect a voltage signal generated at a second terminal of the ultrasonic transducer; and the second voltage output circuit to output a second high voltage smaller than the first high voltage. The first voltage output circuit includes a first switching unit to perform switching between supplying the transmission voltage signal in ultrasonic transmission; and fixing a potential of the first terminal in ultrasonic reception. The second voltage output circuit includes a second switching unit that performs switching between supplying the second high voltage to the second terminal in ultrasonic transmission; and electrically separating the second voltage output circuit from the second terminal in ultrasonic reception.

公开(公告)号：US08525864B2

公开(公告)日：2013-09-03

申请号：US13051332

申请日：2011-03-18

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： B41J2/47 ,  B41J2/435

CPC分类号： B41J2/471 ,  G02B26/127 ,  H01S5/042

摘要： A semiconductor laser driver to drive a semiconductor laser, the semiconductor laser includes a drive circuit to generate a drive current to cause the semiconductor laser to emit, and a current control circuit to cause the driving current to repeatedly increase and decrease in a predetermined cycle.

摘要翻译： 一种用于驱动半导体激光器的半导体激光器驱动器，所述半导体激光器包括用于产生使半导体激光器发射的驱动电流的驱动电路，以及使驱动电流以预定周期反复增减的电流控制电路。

公开(公告)号：US07729399B2

公开(公告)日：2010-06-01

申请号：US11453927

申请日：2006-06-16

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： H01S5/0683

CPC分类号： H01S5/06832 ,  H01S5/0427

摘要： A laser driving circuit configured to drive a semiconductor laser diode, which is less susceptible to noise interference and capable of achieving the control of laser light intensity with high accuracy. Respective circuit components in the laser driving circuit such as an amplifier circuit, a sample hold circuit, a voltage-to-current converter, and a switching circuit are all integrated into an integrated circuit. A capacitor included in the sample hold circuit is further provided as built-in in the integrated circuit, which is previously attached externally. In addition, by changing the resistance of a resistor which is externally connected between the bias current setting terminal of the amplifier circuit and the ground potential by way of a terminal of the integrated circuit, the current outputting capability of the amplifier circuit can be variably adjusted through the adjustment of the charging time of the capacitor. As a result, the response speed of a feedback control loop for controlling the light intensity of laser diode can be increased with less noise interference and high accuracy.

摘要翻译： 激光驱动电路，被配置为驱动不易受噪声干扰的半导体激光二极管，能够高精度地实现激光的强度控制。 诸如放大器电路，采样保持电路，电压 - 电流转换器和开关电路的激光器驱动电路中的各个电路部件都集成到集成电路中。 包含在采样保持电路中的电容器还被内置在集成电路中，该集成电路预先连接到外部。 此外，通过通过集成电路的端子改变外部连接在放大器电路的偏置电流设置端子和接地电位之间的电阻器的电阻，可以可变地调节放大器电路的电流输出能力 通过调节电容器的充电时间。 结果，用于控制激光二极管的光强度的反馈控制回路的响应速度可以以更少的噪声干扰和高精度来增加。

公开(公告)号：US12085645B2

公开(公告)日：2024-09-10

申请号：US17739169

申请日：2022-05-09

申请人： Hiroaki Kyogoku

发明人： Hiroaki Kyogoku

IPC分类号： B06B1/02 ,  A61B8/00 ,  G01S7/52 ,  G01S15/89

CPC分类号： G01S15/8915 ,  A61B8/4483 ,  B06B1/0215 ,  G01S7/52053 ,  B06B2201/51 ,  B06B2201/55 ,  B06B2201/76

摘要： An ultrasonic sensor includes an ultrasonic transducer; a first voltage output circuit to output a transmission voltage signal that oscillates between a first high voltage and a first low voltage, supplied to a first terminal of the ultrasonic transducer; a reception circuit to detect a voltage signal generated at a second terminal of the ultrasonic transducer; and the second voltage output circuit to output a second high voltage smaller than the first high voltage. The first voltage output circuit includes a first switching unit to perform switching between supplying the transmission voltage signal in ultrasonic transmission; and fixing a potential of the first terminal in ultrasonic reception. The second voltage output circuit includes a second switching unit that performs switching between supplying the second high voltage to the second terminal in ultrasonic transmission; and electrically separating the second voltage output circuit from the second terminal in ultrasonic reception.