公开(公告)号：US20140232388A1

公开(公告)日：2014-08-21

申请号：US14184355

申请日：2014-02-19

Applicant: Seiko Instruments Inc.

Inventor： Daisuke MURAOKA ,  Minoru ARIYAMA

IPC: G01R33/07

CPC classification number: G01D5/145 ,  G01R33/0029 ,  G01R33/07 ,  H03K17/9517

Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.

公开(公告)号：US20150115942A1

公开(公告)日：2015-04-30

申请号：US14518427

申请日：2014-10-20

Applicant: Seiko Instruments Inc.

Inventor： Tomoki HIKICHI ,  Daisuke MURAOKA ,  Minoru ARIYAMA ,  Kentaro FUKAI

IPC: G01R33/02

CPC classification number: G01R33/0017 ,  G01R19/16538 ,  G01R31/2829

Abstract: To provide a magnetic sensor circuit that outputs a desired detection pulse while preventing an erroneous detection/erroneous release pulse output when a fluctuation in a power supply voltage occurs within an operating power supply voltage range. A magnetic sensor circuit is configured to include a detection circuit that detects a fluctuation in a power supply voltage or an internal power supply voltage and so as not to latch a determination output of a comparator by a latch circuit that, on the basis of a power supply fluctuation detection signal output from the detection circuit, holds the logic of a control clock signal output from an oscillation circuit for a prescribed period of time and determines the output logic of an output terminal.

Abstract translation: 提供一种磁传感器电路，当在工作电源电压范围内发生电源电压的波动时，输出期望的检测脉冲，同时防止错误的检测/错误释放脉冲输出。 磁传感器电路被配置为包括检测电源电压或内部电源电压的波动的检测电路，并且通过基于功率的锁存电路来锁存比较器的判定输出 从检测电路输出的供给波动检测信号，保持从振荡电路输出规定时间段的控制时钟信号的逻辑，并确定输出端子的输出逻辑。

公开(公告)号：US20150022241A1

公开(公告)日：2015-01-22

申请号：US14490377

申请日：2014-09-18

Applicant: Seiko Instruments Inc.

Inventor： Minoru ARIYAMA ,  Daisuke MURAOKA ,  Tomoki HIKICHI ,  Kentaro FUKAI

IPC: G01R17/02 ,  H03K5/24

CPC classification number: G01R17/02 ,  G01R33/0029 ,  G01R33/07 ,  H03K5/24 ,  H03K17/9517

Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision. The sensor device includes: a switch circuit, which is connected to a first terminal pair and a second terminal pair of the sensor element, for controlling switching of the terminal pairs and outputting detection voltages; a differential amplifier, which includes a first input terminal and a second input terminal connected to a first output terminal and a second output terminal of the switch circuit, respectively, for outputting a result obtained by amplifying a difference of the detection voltages; an amplifier including at least two differential input pairs, one of which inputs the differential signal output from the differential amplifier, and at least one of which inputs a reference signal corresponding to a physical quantity to be detected; and a detection voltage setting circuit for outputting the reference signal to the amplifier.

Abstract translation: 提供一种能够消除传感器元件，差分放大器和传感器装置的放大器的每个偏移电压的影响的传感器装置，从而以高精度检测物理量。 传感器装置包括：开关电路，连接到第一端子对和传感器元件的第二端子对，用于控制端子对的开关并输出检测电压; 差分放大器，分别包括连接到开关电路的第一输出端和第二输出端的第一输入端和第二输入端，用于输出通过放大检测电压的差而得到的结果; 放大器，其包括至少两个差分输入对，其中之一输入从差分放大器输出的差分信号，并且其中的至少一个输入与待检测的物理量相对应的参考信号; 以及检测电压设定电路，用于将参考信号输出到放大器。

公开(公告)号：US20150040687A1

公开(公告)日：2015-02-12

申请号：US14521040

申请日：2014-10-22

Applicant: Seiko Instruments Inc.

Inventor： Minoru ARIYAMA ,  Daisuke MURAOKA ,  Tomoki HIKICHI ,  Kentaro FUKAI

IPC: G01R33/00 ,  G01L1/00 ,  G01R33/02

CPC classification number: G01R33/0023 ,  G01L1/00 ,  G01R33/0029 ,  G01R33/02 ,  G01R33/07

Abstract: Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision and respond to high-speed operation. The sensor device includes: a switch circuit connected to a first terminal pair and a second terminal pair of the sensor element, for controlling switching of the terminal pairs and outputting signal voltages; a differential amplifier including a first input terminal and a second input terminal connected to a first output terminal and a second output terminal of the switch circuit, respectively, for outputting a result obtained by amplifying a difference of the signal voltages; an amplifier including at least two differential input pairs, one of which inputs the differential signal output from the differential amplifier, and at least one of which inputs a reference signal corresponding to a physical quantity to be detected; and a detection voltage setting circuit for outputting the reference signal to the amplifier. Switching of the switch circuit provides a first detection state and a second detection state, and detection is performed in one first detection state and one second detection state.

Abstract translation: 提供了能够消除传感器元件，差分放大器和传感器装置的放大器的每个偏移电压的影响的传感器装置，从而以高精度检测物理量并响应于高速操作。 传感器装置包括：连接到第一端子对的开关电路和传感器元件的第二端子对，用于控制端子对的开关并输出信号电压; 差分放大器，分别包括连接到开关电路的第一输出端和第二输出端的第一输入端和第二输入端，用于输出通过放大信号电压差而获得的结果; 放大器，其包括至少两个差分输入对，其中之一输入从差分放大器输出的差分信号，并且其中的至少一个输入与待检测的物理量相对应的参考信号; 以及检测电压设定电路，用于将参考信号输出到放大器。 开关电路的切换提供第一检测状态和第二检测状态，并且在一个第一检测状态和一秒的检测状态下进行检测。

公开(公告)号：US20140131552A1

公开(公告)日：2014-05-15

申请号：US14076597

申请日：2013-11-11

Applicant: Seiko Instruments Inc.

Inventor： Tsutomu TOMIOKA ,  Daisuke MURAOKA

IPC: G01J1/46

CPC classification number: H04N5/3694 ,  H04N5/3742

Abstract: To provide a small-area photoelectric conversion device without impairing a resolution switching function, signals for controlling output order control switches provided so as to correspond to photoelectric conversion elements are selected by an output order control circuit and a shift register. In this manner, the number of flip-flops forming a shift register is reduced.

Abstract translation: 为了提供小面积光电转换装置而不损害分辨率切换功能，通过输出顺序控制电路和移位寄存器选择用于控制提供以对应于光电转换元件的输出顺序控制开关的信号。 以这种方式，减少了形成移位寄存器的触发器的数目。

公开(公告)号：US20150035567A1

公开(公告)日：2015-02-05

申请号：US14521057

申请日：2014-10-22

Applicant: Seiko Instruments Inc.

Inventor： Masahiro MITANI ,  Minoru ARIYAMA ,  Daisuke MURAOKA ,  Tomoki HIKICHI

IPC: G05F3/26

CPC classification number: G05F3/262 ,  H02H9/02 ,  H03K17/08122 ,  H03K17/687 ,  H03K19/018507 ,  H03K19/1737 ,  H03K2217/0063 ,  H03K2217/0072 ,  H03K2217/0081

Abstract: An output driver circuit provides an overcurrent protection function by a simple circuit configuration. The output driver circuit has a constant-current circuit, a constant-current mirror MOS transistor, and a selector circuit. The constant-current mirror MOS transistor and the output MOS transistor constitute a current mirror circuit. The gate of the output MOS transistor is controlled by a voltage based on a constant current generated by the constant-current mirror MOS transistor, thereby limiting the current flowing between the source and the drain of the output MOS transistor.

Abstract translation: 输出驱动电路通过简单的电路配置提供过流保护功能。 输出驱动电路具有恒流电路，恒流镜MOS晶体管和选择电路。 恒流镜MOS晶体管和输出MOS晶体管构成电流镜电路。 输出MOS晶体管的栅极由基于由恒流镜MOS晶体管产生的恒定电流的电压控制，从而限制在输出MOS晶体管的源极和漏极之间流动的电流。

公开(公告)号：US20140232387A1

公开(公告)日：2014-08-21

申请号：US14184219

申请日：2014-02-19

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Daisuke MURAOKA ,  Minoru ARIYAMA ,  Tomoki HIKICHI ,  Kentaro FUKAI

IPC: G01R33/07

CPC classification number: G01D5/145 ,  G01R33/07 ,  H03K17/9517

Abstract: Provided is a magnetic sensor device capable of performing signal processing at high speed with high accuracy. The magnetic sensor device includes: a plurality of Hall elements; a plurality of differential amplifiers to which the plurality of Hall elements are connected, respectively; a detection voltage setting circuit for outputting a reference voltage; and a comparator including: a plurality of differential input pairs connected to the plurality of differential amplifiers, respectively; and a differential input pair connected to the detection voltage setting circuit.

Abstract translation: 提供能够以高精度高速进行信号处理的磁传感器装置。 磁传感器装置包括：多个霍尔元件; 分别连接多个霍尔元件的多个差分放大器; 用于输出参考电压的检测电压设置电路; 以及比较器，包括：分别连接到所述多个差分放大器的多个差分输入对; 以及与检测电压设定电路连接的差分输入对。

公开(公告)号：US20140028274A1

公开(公告)日：2014-01-30

申请号：US13953257

申请日：2013-07-29

Applicant: Seiko Instruments Inc.

Inventor： Daisuke MURAOKA

IPC: G05F1/575

CPC classification number: G05F1/575 ,  G05F1/56

Abstract: Provided is a regulator configured to output a stable voltage even when a power supply voltage fluctuates suddenly. The regulator includes: a reference voltage circuit; a differential amplifier; a depletion type NMOS transistor; and a bleeder circuit, in which a power supply terminal of the differential amplifier is connected to an output terminal of the regulator. Further, a power supply terminal of the reference voltage circuit is connected to the output terminal of the regulator.

Abstract translation: 提供了即使当电源电压突然波动时也输出稳定电压的调节器。 调节器包括：参考电压电路; 差分放大器; 耗尽型NMOS晶体管; 以及放电电路，其中差分放大器的电源端子连接到调节器的输出端子。 此外，参考电压电路的电源端子连接到调节器的输出端子。

公开(公告)号：US20130214772A1

公开(公告)日：2013-08-22

申请号：US13766303

申请日：2013-02-13

Applicant: Seiko Instruments Inc.

Inventor： Daisuke MURAOKA

IPC: G01R33/00

CPC classification number: G01R33/0017 ,  G01R33/0029 ,  G01R33/07

Abstract: Provided is a magnetic sensor device, which is configured to connect each terminal of a Hall element to another end of a variable resistor having one end connected to GND by switching of four switches. Thus, a detection voltage level for a magnetic field intensity can be arbitrarily set with a small-scale circuit. The detection voltage level is determined only by the resistance ratio, and hence the influence of fluctuations in power supply voltage and manufacturing fluctuations can be suppressed. This configuration can simplify signal processing and achieve higher-speed signal processing.

Abstract translation: 提供了一种磁传感器装置，其被配置为通过切换四个开关将霍尔元件的每个端子连接到具有连接到GND的可变电阻器的另一端。 因此，可以用小规模电路任意设定磁场强度的检测电压电平。 检测电压电平仅由电阻比确定，因此可以抑制电源电压波动和制造波动的影响。 这种配置可以简化信号处理并实现更高速的信号处理。