公开(公告)号：US08872453B2

公开(公告)日：2014-10-28

申请号：US13658109

申请日：2012-10-23

Applicant: Tomohiko Kamatani ,  Haruyuki Suzuki ,  Fumihiro Shimizu ,  Katsuhisa Furuse

Inventor： Tomohiko Kamatani ,  Haruyuki Suzuki ,  Fumihiro Shimizu ,  Katsuhisa Furuse

IPC: H02P6/16

CPC classification number: H02P6/16

Abstract: A motor drive controller to control a motor via multiple sensors includes a first phase detector to compare respective differential pairs of the sensor signals from the same sensor to detect phases of the rotor, and output a first phase information signal; a second phase detector to compare a respective one of the multiple sensor signals with another sensor signal from the different sensor to detect the phases and output a second phase information signal; a phase divider to divide the phases, detected by the first and second phase detectors, into multiple predetermined phase intervals; a signal selector to select one of the multiple sensor signals in the multiple predetermined phase intervals; and a third phase detector to detect whether the signal selected by the signal selector reaches a predetermined threshold level corresponding to a predetermined phase of the rotor, and output a third phase information signal.

Abstract translation: 用于通过多个传感器控制电动机的电动机驱动控制器包括第一相位检测器，用于比较来自同一传感器的传感器信号的各差分对以检测转子的相位，并输出第一相位信息信号; 第二相位检测器，用于将来自所述不同传感器的另一个传感器信号与所述多个传感器信号中的相应一个进行比较，以检测相位并输出第二相位信息信号; 相位分配器，用于将由第一和第二相位检测器检测的相位分成多个预定相位间隔; 信号选择器，用于选择多个预定相位间隔中的多个传感器信号之一; 以及第三相位检测器，用于检测由信号选择器选择的信号是否达到与转子的预定相位对应的预定阈值电平，并输出第三相位信息信号。

公开(公告)号：US08866421B2

公开(公告)日：2014-10-21

申请号：US13658119

申请日：2012-10-23

Applicant: Tomohiko Kamatani ,  Haruyuki Suzuki ,  Fumihiro Shimizu ,  Katsuhisa Furuse

Inventor： Tomohiko Kamatani ,  Haruyuki Suzuki ,  Fumihiro Shimizu ,  Katsuhisa Furuse

IPC: H02P6/16

CPC classification number: H02P6/16

Abstract: A motor drive controller to drive a motor, based on multiple sensors that generates multiple sensor signals corresponding to different positions of the rotor; including a first phase detector to compare a respective one of the multiple sensor signals with a paired sensor signal from the same sensor to detect phases of the rotor, and output a first phase information signal representing a first detected phase; a phase divider to divide the phases, detected by the first phase detector into multiple predetermined phase intervals; a signal selector to select one of the respective multiple sensor signals from the multiple sensors in the multiple predetermined phase interval; and a second phase detector to detect whether the signal selected by the signal selector reaches a predetermined threshold level corresponding to a predetermined phase of the rotor, and output a second phase information signal representing a second detected phase.

Abstract translation: 基于产生对应于转子的不同位置的多个传感器信号的多个传感器驱动马达的马达驱动控制器; 包括第一相位检测器，用于将多个传感器信号中的相应一个与来自相同传感器的成对传感器信号进行比较，以检测转子的相位，并输出表示第一检测相位的第一相位信息信号; 相位分配器，用于将由第一相位检测器检测的相位分成多个预定相位间隔; 信号选择器，用于在所述多个预定相位间隔中从所述多个传感器中选择相应的多个传感器信号之一; 以及第二相位检测器，用于检测由信号选择器选择的信号是否达到与转子的预定相位对应的预定阈值电平，并输出表示第二检测相位的第二相位信息信号。

公开(公告)号：US08654166B2

公开(公告)日：2014-02-18

申请号：US12704131

申请日：2010-02-11

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: B41J2/435 ,  B41J2/47

CPC classification number: B41J2/14072 ,  H03K19/0175

Abstract: Disclosed is a receiving device that includes a differential input circuit having an inverting input terminal and a non-inverting input terminal to which the differential signal is input; an abnormality detection circuit that detects an abnormality in a wiring connected to the inverting input terminal and the non-inverting input terminal; and a control circuit that sets an output signal of the receiving device in a predetermined status when the abnormality is detected. The abnormality detection circuit detects the abnormality if a status, in which a potential difference between a voltage of the inverting input terminal and a voltage of the non-inverting input terminal is less than a minimum potential difference in a predetermined range of the potential difference between the voltage of the inverting input terminal and the voltage of the non-inverting input terminal, continues for a predetermined time or more.

Abstract translation: 公开了一种接收装置，其包括具有输入差分信号的反相输入端子和非反相输入端子的差分输入电路; 异常检测电路，检测与反相输入端子和非反相输入端子连接的布线的异常; 以及控制电路，其在检测到异常时将接收装置的输出信号设定在预定状态。 异常检测电路检测异常，其中，反相输入端子的电压与非反相输入端子的电压之间的电位差小于电位差的预定范围内的最小电位差的状态， 反相输入端子的电压和非反相输入端子的电压持续预定时间或更长时间。

公开(公告)号：US08587346B2

公开(公告)日：2013-11-19

申请号：US11523113

申请日：2006-09-18

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H03K3/00 ,  G09G3/28 ,  G09G3/32 ,  G05F3/16

CPC classification number: H02M3/155 ,  H05B33/0815 ,  H05B33/0827

Abstract: A driving circuit is disclosed that has low power consumption and supplies a current to a load. The driving circuit includes a constant current circuit section to generate and output a predetermined constant current, a current mirror circuit section to generate a current proportional to an input current supplied from the constant current circuit section and supply the current to the load, and a constant voltage supplying circuit section to generate a constant voltage and supply the constant voltage to a series circuit of the load and an output transistor of the current mirror circuit. The constant voltage supplying circuit section gene-rates the constant voltage so that an output voltage of the current mirror circuit section equals an input voltage of the current mirror circuit section.

Abstract translation: 公开了一种驱动电路，其具有低功耗并且向负载提供电流。 驱动电路包括产生并输出预定恒定电流的恒流电路部分，电流镜电路部分，用于产生与从恒流电路部分提供的输入电流成比例的电流，并将电流提供给负载;以及常数 电压供给电路部，生成恒定电压，并将恒定电压提供给负载的串联电路和电流镜电路的输出晶体管。 恒压供给电路部对恒定电压进行基频化，使得电流镜电路部的输出电压等于电流镜电路部的输入电压。

公开(公告)号：US08576886B2

公开(公告)日：2013-11-05

申请号：US13037574

申请日：2011-03-01

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H01S3/00

CPC classification number: H01S5/4025 ,  H01S5/0683

Abstract: A laser diode drive includes a first photo diode connection terminal to connect a first photo diode that detects light emission amounts of multiple laser diodes, multiple second photo diode connection terminals to connect multiple second photo diodes that detect light emission amounts of the respective multiple laser diodes, multiple APC controllers to control the light emission amounts of the multiple laser diodes based on monitor currents from the first photo diode or the second photo diodes, multiple switches to connect and disconnect the respective APC controllers with a monitor current path formed between the first photo diode connection terminal and the multiple APC controllers, and a detector to detect whether or not the first photo diode is connected to the first photo diode connection terminal and cause all of the switches to disconnect when the first photo diode is not connected to the first photo diode connection terminal.

Abstract translation: 激光二极管驱动器包括第一光电二极管连接端子，用于连接检测多个激光二极管的发光量的第一光电二极管，多个第二光电二极管连接端子以连接多个第二光电二极管，以检测各个激光二极管的发光量 ，多个APC控制器，用于基于来自第一光电二极管或第二光电二极管的监视电流来控制多个激光二极管的发光量;多个开关，用于在第一照片之间形成的监视器电流路径来连接和断开相应的APC控制器 二极管连接端子和多个APC控制器，以及检测器，用于检测第一光电二极管是否连接到第一光电二极管连接端子，并且当第一光电二极管未连接到第一照片时，使所有开关断开 二极管连接端子。

公开(公告)号：US08559476B2

公开(公告)日：2013-10-15

申请号：US13181658

申请日：2011-07-13

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H01S3/00

CPC classification number: H01S5/042 ,  B41J2/471 ,  G02B26/123 ,  G06K15/12 ,  H01S5/0683

Abstract: A semiconductor laser driver to execute automatic power control (APC) for multiple semiconductor lasers based on a common APC output from an image controller. The semiconductor laser driver includes a drive circuit to generate an individual APC signal to execute APC for each semiconductor laser based on the common APC signal.

Abstract translation: 一种半导体激光驱动器，用于基于图像控制器的公共APC输出执行多个半导体激光器的自动功率控制（APC）。 半导体激光器驱动器包括驱动电路，以产生单个APC信号，以根据公共APC信号为每个半导体激光器执行APC。

公开(公告)号：US08526474B2

公开(公告)日：2013-09-03

申请号：US13386476

申请日：2010-07-14

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H01S3/13

CPC classification number: H01S5/4025 ,  H01S5/0427 ,  H01S5/06832 ,  H04N9/3129

Abstract: A disclosed multi-beam laser power control circuit includes a light receiving element receiving power output from semiconductor lasers to control output power of a semiconductor laser array having plural semiconductor lasers, automatic power control circuits (APC circuits) controlling emission power output from semiconductor lasers based on received corresponding automatic power control execution signals so as to be set to predetermined emission power based on output from the light receiving element, and APC execution signal input terminals inputting the corresponding automatic power control execution signals, wherein, when plural APC execution signals input to the corresponding APC execution signal input terminals are overlapped, the automatic power control circuits (APC circuits) to be preferentially operated is determined based on input timings of the APC execution signals and operated.

Abstract translation: 所公开的多光束激光功率控制电路包括接收来自半导体激光器的功率输出以控制具有多个半导体激光器的半导体激光器阵列的输出功率的光接收元件，控制从半导体激光器输出的发射功率的自动功率控制电路（APC电路） 在接收到相应的自动功率控制执行信号时，基于来自光接收元件的输出被设置为预定的发射功率，以及输入相应的自动功率控制执行信号的APC执行信号输入端，其中当多个APC执行信号输入到 相应的APC执行信号输入端重叠，基于APC执行信号的输入定时确定要优先操作的自动功率控制电路（APC电路）并进行操作。

公开(公告)号：US08483250B2

公开(公告)日：2013-07-09

申请号：US12810122

申请日：2008-12-15

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H01S3/00

CPC classification number: H01S5/042 ,  H01S5/0021 ,  H01S5/0683

Abstract: A semiconductor laser driving device and an image forming apparatus are disclosed that are capable of accurately detecting the deterioration of the semiconductor laser with a smaller circuit size and regardless of the variation of the characteristics of the semiconductor laser and the use conditions of the semiconductor laser by adding a minimum circuit are disclosed. In the semiconductor laser driving device, the output voltage generated by an operational amplifier circuit by amplifying a voltage difference between a monitoring voltage (Vm) and a predetermined reference voltage (Vref) is transmitted to a bias current generating circuit unit as a bias current setting voltage (Vbi) through a sample/hold circuit having a switch (SW1) and a sample/hold capacitor (Csh). When the bias current setting voltage (Vbi) is greater than a predetermined voltage, a deterioration detecting circuit transmits a deterioration detecting signal indicating that the deterioration of the semiconductor laser is detected.

Abstract translation: 公开了一种半导体激光器驱动装置和图像形成装置，其能够以更小的电路尺寸精确地检测半导体激光器的劣化，并且不管半导体激光器的特性的变化和半导体激光器的使用条件如何 公开了一个最小电路。 在半导体激光驱动装置中，通过放大监视电压（Vm）和规定的基准电压（Vref）之间的电压差，由运算放大电路产生的输出电压作为偏置电流设定被发送到偏置电流产生电路单元 通过具有开关（SW1）和采样/保持电容器（Csh）的采样/保持电路的电压（Vbi）。 当偏置电流设定电压（Vbi）大于预定电压时，劣化检测电路发送表示检测到半导体激光器的劣化的劣化检测信号。

公开(公告)号：US09682835B2

公开(公告)日：2017-06-20

申请号：US14936904

申请日：2015-11-10

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: G05B11/12 ,  B65H5/02 ,  H02P6/16 ,  G01D5/243

CPC classification number: B65H5/021 ,  B65H2211/00 ,  G01D5/243 ,  H02P6/16

Abstract: A phase detector is provided. The phase detector includes a signal selector, a bias level generator, and a phase information detector. The signal selector selects, as a selected sensor signal, one of a plurality of sensor signals each having a signal level corresponding to a phase of a rotor. The bias level generator divides a signal level difference between a pair of sensor signals, including the selected sensor signal and other sensor signal of the plurality of sensor signals other than the selected sensor signal, at a first ratio, to generate a first bias level. The phase information detector generates a threshold level corresponding to the phase of the rotor based on the first bias level, and detects the signal level of the selected sensor signal reaching the threshold level.

公开(公告)号：US09515587B2

公开(公告)日：2016-12-06

申请号：US14633794

申请日：2015-02-27

Applicant: Tomohiko Kamatani

Inventor： Tomohiko Kamatani

IPC: H02P6/06 ,  H02P6/16 ,  G01D5/14 ,  H02P6/18

CPC classification number: H02P6/16 ,  G01D5/145 ,  H02P6/188

Abstract: A phase detector includes a crossing-point phase detection circuit to compare signals levels of pairs of sensor signals and output crossing-point phase detection signals indicating phases of crossing points between the pairs of the sensor signals, each having a signal level corresponding to a rotational position of a rotor of a motor having coils, a crossing-point level detection circuit to output crossing-point level signals indicating crossing-point levels detected, a signal selection circuit to select one of the sensor signals as a selection signal, a phase detection circuit to detect that a signal level of the selection signal has reached a threshold level, and output a phase data signal indicating a phase of the rotor corresponding to the threshold level, and an in-phase level adjustment circuit to adjust and output in-phase levels of the sensor signals to approach each of the crossing-point levels to a predetermined signal level.

Abstract translation: 相位检测器包括：交叉点相位检测电路，用于比较传感器信号对的信号电平和输出交叉点相位检测信号，所述输出交叉点相位检测信号指示传感器信号对之间的交叉点的相位，每个传感器信号对具有对应于旋转 具有线圈的电动机的转子的位置，交叉点电平检测电路，输出指示检测到的交叉点电平的交叉点电平信号，选择传感器信号之一作为选择信号的信号选择电路，相位检测 电路，用于检测选择信号的信号电平已经达到阈值电平，并且输出指示与阈值电平对应的转子相位的相位数据信号，以及同相电平调整电路，用于同相 传感器信号的电平接近每个交叉点电平到预定信号电平。