公开(公告)号：US10704907B2

公开(公告)日：2020-07-07

申请号：US16058391

申请日：2018-08-08

Applicant: Seiko Epson Corporation

Inventor： Teppei Higuchi ,  Katsuhiko Maki

IPC: G01C19/5614 ,  G01C19/5649 ,  G01C19/5628 ,  H03B5/04

Abstract: A circuit device includes a clock signal generation circuit that generates a clock signal through an oscillation circuit, and a detection circuit including a circuit operating through an operation signal based on the clock signal. The clock signal generation circuit includes a first frequency adjustment unit which is capable of adjusting an oscillation frequency before an physical quantity transducer and the circuit device are connected to each other, and a second frequency adjustment unit which is capable of adjusting the oscillation frequency in a state where the physical quantity transducer and the circuit device are connected to each other.

公开(公告)号：US10190918B2

公开(公告)日：2019-01-29

申请号：US15131183

申请日：2016-04-18

Applicant: Seiko Epson Corporation

Inventor： Teppei Higuchi ,  Hideo Haneda

IPC: G01C19/5726 ,  G01K7/20 ,  G01K1/20 ,  G01K7/42 ,  G01C19/5776 ,  G01K13/00

Abstract: A circuit apparatus includes a voltage output circuit that outputs a first output voltage when a first current of first temperature characteristics flows in a resistance element, and a second output voltage when a second current of second temperature characteristics different from the first temperature characteristics flows in the resistance element, an A/D conversion circuit that outputs a first digital value by performing A/D conversion on the first output voltage, and outputs a second digital value by performing A/D conversion on the second output voltage, and a processing unit that obtains temperature data by digital calculation processing of the first digital value and the second digital value.

公开(公告)号：US10072929B2

公开(公告)日：2018-09-11

申请号：US14996524

申请日：2016-01-15

Applicant: Seiko Epson Corporation

Inventor： Teppei Higuchi ,  Katsuhiko Maki

IPC: G01C19/56 ,  G01C19/5614 ,  G01C19/5649 ,  G01C19/5628 ,  H03B5/04

CPC classification number: G01C19/5614 ,  G01C19/5628 ,  G01C19/5649 ,  H03B5/04

Abstract: A circuit device includes a clock signal generation circuit that generates a clock signal through an oscillation circuit, and a detection circuit including a circuit operating through an operation signal based on the clock signal. The clock signal generation circuit includes a first frequency adjustment unit which is capable of adjusting an oscillation frequency before an physical quantity transducer and the circuit device are connected to each other, and a second frequency adjustment unit which is capable of adjusting the oscillation frequency in a state where the physical quantity transducer and the circuit device are connected to each other.

公开(公告)号：US09698686B2

公开(公告)日：2017-07-04

申请号：US14533483

申请日：2014-11-05

Applicant: Seiko Epson Corporation

Inventor： Katsuhiko Maki ,  Teppei Higuchi ,  Takashi Nomiya

IPC: G01C19/5776 ,  H03G3/30 ,  H02M3/158 ,  H03F3/45

CPC classification number: H02M3/158 ,  G01C19/5776 ,  H03F3/45183 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45212 ,  H03F2203/45466 ,  H03F2203/45504 ,  H03F2203/45508 ,  H03F2203/45528 ,  H03F2203/45536 ,  H03F2203/45674 ,  H03G3/3005

Abstract: A detection device includes a driving circuit which drives a physical quantity transducer, a detection circuit which detects a desired signal, a power-supply terminal into which a power-supply voltage is input, a regulator circuit which performs a voltage adjustment of stepping down the power-supply voltage from the power-supply terminal, and supplies a regulated power-supply voltage obtained by the voltage adjustment to the driving circuit and the detection circuit as an operating power-supply voltage, and a buffer circuit which is supplied with the power-supply voltage, receives a drive signal from the driving circuit, and outputs an amplified drive signal in which an amplitude of the drive signal increases to the physical quantity transducer.

公开(公告)号：US20160216113A1

公开(公告)日：2016-07-28

申请号：US14996524

申请日：2016-01-15

Applicant: Seiko Epson Corporation

Inventor： Teppei Higuchi ,  Katsuhiko Maki

IPC: G01C19/5614 ,  G01C19/5628

CPC classification number: G01C19/5614 ,  G01C19/5628 ,  G01C19/5649 ,  H03B5/04

Abstract: A circuit device includes a clock signal generation circuit that generates a clock signal through an oscillation circuit, and a detection circuit including a circuit operating through an operation signal based on the clock signal. The clock signal generation circuit includes a first frequency adjustment unit which is capable of adjusting an oscillation frequency before an physical quantity transducer and the circuit device are connected to each other, and a second frequency adjustment unit which is capable of adjusting the oscillation frequency in a state where the physical quantity transducer and the circuit device are connected to each other.

Abstract translation: 电路装置包括通过振荡电路产生时钟信号的时钟信号发生电路，以及包括通过基于时钟信号的操作信号工作的电路的检测电路。 时钟信号发生电路包括：第一频率调整单元，其能够在物理量换能器和电路装置彼此连接之前调整振荡频率;以及第二频率调整单元，其能够调整振荡频率 物理量传感器和电路装置彼此连接的状态。

公开(公告)号：US09391595B2

公开(公告)日：2016-07-12

申请号：US14552979

申请日：2014-11-25

Applicant: Seiko Epson Corporation

Inventor： Teppei Higuchi ,  Masafumi Tanaka ,  Katsuhiko Maki

IPC: H03B5/04 ,  H03K3/03 ,  H03K3/011

CPC classification number: H03K3/03 ,  H03K3/011

Abstract: A clock signal generation circuit includes a CR oscillator circuit having a capacitor, a resistor, and an amplifier circuit, and a voltage generation circuit adapted to generate a power supply voltage, and then supply the CR oscillator circuit 170 with the power supply voltage VDOS. An oscillation frequency of the CR oscillator circuit in a case in which a power supply voltage VDDL is a fixed voltage has a positive temperature characteristic. The voltage generation circuit generates the power supply voltage VDOS having a negative temperature characteristic based on a work function difference between transistors, and then supplies the power supply voltage VDOS as a power of the amplifier circuit of the CR oscillator circuit.

Abstract translation: 时钟信号发生电路包括具有电容器，电阻器和放大器电路的CR振荡器电路和适于产生电源电压的电压产生电路，然后向CR振荡器电路170提供电源电压VDOS。 在电源电压VDDL为固定电压的情况下，CR振荡电路的振荡频率为正温度特性。 电压产生电路基于晶体管之间的功函差产生具有负温度特性的电源电压VDOS，然后将电源电压VDOS作为CR振荡电路的放大电路的功率。