公开(公告)号：US20080012718A1

公开(公告)日：2008-01-17

申请号：US11812551

申请日：2007-06-20

申请人： Kouju Aoki ,  Takahiro Watai ,  Hiroyuki Sakima ,  Masaya Mizutani ,  Takuya Okajima

发明人： Kouju Aoki ,  Takahiro Watai ,  Hiroyuki Sakima ,  Masaya Mizutani ,  Takuya Okajima

IPC分类号： G08B21/00

CPC分类号： B60C23/0408 ,  G01D3/08 ,  G01L9/02

摘要： An amplifier 1 is arranged to amplify a sense signal from a sensor with low current consumption while maintaining sufficient sensitivity. The amplifier 1 comprises a detection circuit 2 which detects a signal level of the sense signal and outputs an alarm signal when the sense signal is in a first signal level range R1, and a variable gain amplifier 3 which, based on a detection result of the detection circuit 2, stops an amplifying operation when the sense signal is in the first signal level range R1, performs the amplifying operation at a first gain G1 when the sense signal is in a second signal level range R2, or performs the amplifying operation at a second gain G2 larger than the first gain G1 when the sense signal is in a third signal level range R3 defined between the first and second signal level ranges.

摘要翻译： 放大器1布置成在具有低电流消耗的传感器中放大感测信号，同时保持足够的灵敏度。 放大器1包括检测电路2，该检测电路2检测感测信号的信号电平，并且当感测信号处于第一信号电平范围R 1时输出报警信号;以及可变增益放大器3，其基于 当感测信号处于第一信号电平范围R 1时，检测电路2停止放大操作，当感测信号处于第二信号电平范围R 2时，以第一增益G 1执行放大操作，或执行 当感测信号处于第一和第二信号电平范围之间限定的第三信号电平范围R 3时，以大于第一增益G 1的第二增益G 2进行放大操作。

公开(公告)号：US07857505B2

公开(公告)日：2010-12-28

申请号：US11598571

申请日：2006-11-14

申请人： Hiroyuki Sakima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

发明人： Hiroyuki Sakima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

IPC分类号： G01K15/00 ,  G01K11/00

CPC分类号： G01D3/022 ,  G01D3/0365

摘要： A method and circuit for preventing an output signal, which has been corrected through digital correction or analog correction, from deviating from a target value and for preventing power supply noise and power consumption from increasing. A sensor amplification circuit receives output of a sensor as an input signal. Correction points are set at predetermined temperature intervals. The sensor amplification circuit performs digital correction for correcting the input signal with correction data set for each correction point. Further, the sensor amplification circuit performs a second correction for correcting the input signal between the correction points with gradient data calculated from the correction data for two of the correction points that are adjacent to each other.

摘要翻译： 一种用于防止通过数字校正或模拟校正被校正的输出信号偏离目标值并防止电源噪声和功率消耗增加的方法和电路。 传感器放大电路接收传感器的输出作为输入信号。 校正点设定在预定的温度间隔。 传感器放大电路进行用于校正输入信号的数字校正，其中校正数据被设置用于每个校正点。 此外，传感器放大电路进行第二校正，用于利用从彼此相邻的两个校正点的校正数据计算的梯度数据来校正校正点之间的输入信号。

公开(公告)号：US20070214884A1

公开(公告)日：2007-09-20

申请号：US11598571

申请日：2006-11-14

申请人： Hiroyuki Sakima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

发明人： Hiroyuki Sakima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

IPC分类号： G01P15/08

CPC分类号： G01D3/022 ,  G01D3/0365

摘要： A method and circuit for preventing an output signal, which has been corrected through digital correction or analog correction, from deviating from a target value and for preventing power supply noise and power consumption from increasing. A sensor amplification circuit receives output of a sensor as an input signal. Correction points are set at predetermined temperature intervals. The sensor amplification circuit performs digital correction for correcting the input signal with correction data set for each correction point. Further, the sensor amplification circuit performs a second correction for correcting the input signal between the correction points with gradient data calculated from the correction data for two of the correction points that are adjacent to each other.

摘要翻译： 一种用于防止通过数字校正或模拟校正被校正的输出信号偏离目标值并防止电源噪声和功率消耗增加的方法和电路。 传感器放大电路接收传感器的输出作为输入信号。 校正点设定在预定的温度间隔。 传感器放大电路进行用于校正输入信号的数字校正，其中校正数据被设置用于每个校正点。 此外，传感器放大电路进行第二校正，用于利用从彼此相邻的两个校正点的校正数据计算的梯度数据来校正校正点之间的输入信号。

公开(公告)号：US20070229120A1

公开(公告)日：2007-10-04

申请号：US11511318

申请日：2006-08-29

申请人： Takuya Okajima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Hiroyuki Sakima

发明人： Takuya Okajima ,  Koju Aoki ,  Takahiro Watai ,  Masaya Mizutani ,  Hiroyuki Sakima

IPC分类号： H03K5/01

CPC分类号： G01D18/008 ,  G01D3/022 ,  G01D3/0365

摘要： A temperature characteristic correction method enabling easy setting of correction points, while reducing deviations of an output signal from a target value and preventing power supply noise and power consumption from increasing. The method includes storing correction patterns, each of which includes correction points set at a temperature interval that differs between the correction patterns. The method further includes storing correction data for each correction point in each correction pattern, selecting a correction pattern corresponding to the temperature dependent characteristic of the input signal from the correction patterns, and correcting the temperature dependent characteristic of the input signal with the selected correction pattern and the correction data corresponding to the selected correction pattern.

摘要翻译： 一种温度特性校正方法，其能够容易地设置校正点，同时减少输出信号与目标值的偏差，并防止电源噪声和功率消耗增加。 该方法包括存储校正图案，每个校正图案包括在校正图案之间不同的温度间隔设置的校正点。 该方法还包括在每个校正图案中存储每个校正点的校正数据，从校正图案中选择对应于输入信号的与温度相关的特性的校正图案，以及用所选择的校正图案校正输入信号的温度依赖特性 以及对应于所选择的校正图案的校正数据。

公开(公告)号：US07345536B2

公开(公告)日：2008-03-18

申请号：US11181775

申请日：2005-07-15

申请人： Masaya Mizutani ,  Koju Aoki ,  Takahiro Watai ,  Koji Takekawa ,  Hiroyuki Sakima

发明人： Masaya Mizutani ,  Koju Aoki ,  Takahiro Watai ,  Koji Takekawa ,  Hiroyuki Sakima

IPC分类号： H03G3/20

CPC分类号： H03G1/0088 ,  H03F1/52 ,  H03F3/45475

摘要： An amplifier circuit which is connected to a sensor and variably sets an amplification property and a control method thereof are disclosed, the circuit having the capability of restricting the influence of change with time and temperature change. The amplifier circuit 1, which receives, as an input, a detection signal from the sensor and variably sets an amplification property, comprises: (1) a first reference value retaining unit 50 for retaining a first reference value K1 for setting an amplification property which makes an output signal be a specified detection reference output voltage when a reference input condition KJ is detected; (2) a correction signal generation unit 30 for generating a correction signal HS which reduces the difference between an amplification property actual measurement value and an amplification property set value; and (3) a first amplification property correction unit 40 for correcting the first reference value K1 based on the correction signal HS.

摘要翻译： 公开了连接到传感器并且可变地设置放大特性的放大器电路及其控制方法，该电路具有限制随时间和温度变化的变化影响的能力。 作为输入接收来自传感器的检测信号并且可变地设置放大特性的放大器电路1包括：（1）第一参考值保持单元50，用于保持用于设置放大特性的第一参考值K 1 当检测到参考输入条件KJ时，其使输出信号成为指定的检测基准输出电压; （2）校正信号生成单元30，用于产生校正信号HS，该校正信号HS减小放大特性实际测量值和放大特性设定值之间的差; 和（3）第一放大特性校正单元40，用于基于校正信号HS校正第一参考值K 1。

公开(公告)号：US07271595B2

公开(公告)日：2007-09-18

申请号：US11362098

申请日：2006-02-27

申请人： Katsuya Shimizu ,  Hiroyuki Sakima ,  Takahiro Watai ,  Masaya Mizutani ,  Koju Aoki ,  Koji Takekawa

发明人： Katsuya Shimizu ,  Hiroyuki Sakima ,  Takahiro Watai ,  Masaya Mizutani ,  Koju Aoki ,  Koji Takekawa

IPC分类号： G01R31/08

CPC分类号： G01P15/123 ,  G01L25/00 ,  G01P21/00 ,  G01R31/2829

摘要： Provided are two monitor circuits for monitoring two input signals of an input stage differential amplifier, respectively, and two monitor circuit for monitoring two output signals of the input stage differential amplifier, respectively. When failure occurs at the bridge circuit of a sensor element or at the input stage differential amplifier, the monitoring units or the monitoring units detect abnormality, which makes it possible to detect the failure of the sensor element or the input stage differential amplifier. Therefore it is possible to detect failure such as a disconnection or a short circuit of the bridge circuit of the sensor element and failure which has occurred at the amplifier for amplifying outputs of the sensor element.

摘要翻译： 分别提供两个用于监视输入级差分放大器的两个输入信号的监控电路和用于监视输入级差分放大器的两个输出信号的两个监视电路。 当传感器元件的桥接电路或输入级差分放大器发生故障时，监控单元或监控单元检测到异常，这样可以检测传感器元件或输入级差分放大器的故障。 因此，可以检测传感器元件的桥接电路的断开或短路等故障以及放大器发生的用于放大传感器元件的输出的故障。

公开(公告)号：US20070115005A1

公开(公告)日：2007-05-24

申请号：US11362098

申请日：2006-02-27

申请人： Katsuya Shimizu ,  Hiroyuki Sakima ,  Takahiro Watai ,  Masaya Mizutani ,  Koju Aoki ,  Koji Takekawa

发明人： Katsuya Shimizu ,  Hiroyuki Sakima ,  Takahiro Watai ,  Masaya Mizutani ,  Koju Aoki ,  Koji Takekawa

IPC分类号： G01R31/02

CPC分类号： G01P15/123 ,  G01L25/00 ,  G01P21/00 ,  G01R31/2829

摘要： Provided are two monitor circuits for monitoring two input signals of an input stage differential amplifier, respectively, and two monitor circuit for monitoring two output signals of the input stage differential amplifier, respectively. When failure occurs at the bridge circuit of a sensor element or at the input stage differential amplifier, the monitoring units or the monitoring units detect abnormality, which makes it possible to detect the failure of the sensor element or the input stage differential amplifier. Therefore it is possible to detect failure such as a disconnection or a short circuit of the bridge circuit of the sensor element and failure which has occurred at the amplifier for amplifying outputs of the sensor element.

公开(公告)号：US20060208795A1

公开(公告)日：2006-09-21

申请号：US11181775

申请日：2005-07-15

申请人： Masaya Mizutani ,  Koju Aoki ,  Takahiro Watai ,  Koji Takekawa ,  Hiroyuki Sakima

发明人： Masaya Mizutani ,  Koju Aoki ,  Takahiro Watai ,  Koji Takekawa ,  Hiroyuki Sakima

IPC分类号： H03G3/20

CPC分类号： H03G1/0088 ,  H03F1/52 ,  H03F3/45475

摘要： An amplifier circuit which is connected to a sensor and variably sets an amplification property and a control method thereof are disclosed, the circuit having the capability of restricting the influence of change with time and temperature change. The amplifier circuit 1, which receives, as an input, a detection signal from the sensor and variably sets an amplification property, comprises: (1) a first reference value retaining unit 50 for retaining a first reference value K1 for setting an amplification property which makes an output signal be a specified detection reference output voltage when a reference input condition KJ is detected; (2) a correction signal generation unit 30 for generating a correction signal HS which reduces the difference between an amplification property actual measurement value and an amplification property set value; and (3) a first amplification property correction unit 40 for correcting the first reference value K1 based on the correction signal HS.

摘要翻译： 公开了连接到传感器并且可变地设置放大特性的放大器电路及其控制方法，该电路具有限制随时间和温度变化的变化影响的能力。 作为输入接收来自传感器的检测信号并且可变地设置放大特性的放大器电路1包括：（1）第一参考值保持单元50，用于保持用于设置放大特性的第一参考值K 1 当检测到参考输入条件KJ时，其使输出信号成为指定的检测基准输出电压; （2）校正信号生成单元30，用于产生校正信号HS，该校正信号HS减小放大特性实际测量值和放大特性设定值之间的差; 和（3）第一放大特性校正单元40，用于基于校正信号HS校正第一参考值K 1。

公开(公告)号：US07336107B2

公开(公告)日：2008-02-26

申请号：US11398702

申请日：2006-04-06

申请人： Koji Takekawa ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

发明人： Koji Takekawa ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

IPC分类号： H03K5/22

CPC分类号： H03K5/088 ,  G01R19/16576 ,  H03K3/3565 ,  H03K5/1252

摘要： This invention provides a comparator circuit which outputs a stable waveform without oscillation even if a gradient of a change of a comparison input signal is small and determines a magnitude of the comparison input signal within a predetermined threshold value regardless of the increase/decrease direction of the comparison input signal. A comparator circuit 100 comprises a capacitative element 4 which is charged or discharged corresponding to a difference of potential between a comparison input signal IN and a reference input signal REF, an analog buffer portion 5 which outputs high level if the voltage is above a threshold voltage Vth and low level if it is less than the threshold voltage Vth, an edge detecting portion 7 which detects leading and trailing edges of the analog buffer portion 5 so as to output an up signal UP and a down signal DOWN and a charge pump portion 8 which charges a capacitative portion corresponding to the up signal UP and discharges the capacitative portion corresponding to the down signal DOWN.

摘要翻译： 本发明提供了一种比较器电路，即使比较输入信号的变化的梯度小，也不产生振荡地输出稳定的波形，并且将比较输入信号的幅度确定在预定的阈值内，而不管其的增减方向如何 比较输入信号。 比较器电路100包括对应于比较输入信号IN和参考输入信号REF之间的电位差进行充电或放电的电容元件4，如果电压高于阈值电压则输出高电平的模拟缓冲器部分5 Vth和低电平，如果它小于阈值电压Vth，边缘检测部分7检测模拟缓冲器部分5的前沿和后沿以便输出上升信号UP和下降信号DOWN以及电荷泵部分8 其对与上升信号UP相对应的电容部分进行充电，并且将对应于向下信号DOWN的电容部分放电。

公开(公告)号：US20070146015A1

公开(公告)日：2007-06-28

申请号：US11398702

申请日：2006-04-06

申请人： Koji Takekawa ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

发明人： Koji Takekawa ,  Takahiro Watai ,  Masaya Mizutani ,  Takuya Okajima

IPC分类号： H03K5/22

CPC分类号： H03K5/088 ,  G01R19/16576 ,  H03K3/3565 ,  H03K5/1252

摘要： This invention provides a comparator circuit which outputs a stable waveform without oscillation even if a gradient of a change of a comparison input signal is small and determines a magnitude of the comparison input signal within a predetermined threshold value regardless of the increase/decrease direction of the comparison input signal. A comparator circuit 100 comprises a capacitative element 4 which is charged or discharged corresponding to a difference of potential between a comparison input signal IN and a reference input signal REF, an analog buffer portion 5 which outputs high level if the voltage is above a threshold voltage Vth and low level if it is less than the threshold voltage Vth, an edge detecting portion 7 which detects leading and trailing edges of the analog buffer portion 5 so as to output an up signal UP and a down signal DOWN and a charge pump portion 8 which charges a capacitative portion corresponding to the up signal UP and discharges the capacitative portion corresponding to the down signal DOWN.

摘要翻译： 本发明提供了一种比较器电路，即使比较输入信号的变化的梯度小，也不产生振荡地输出稳定的波形，并且将比较输入信号的幅度确定在预定的阈值内，而不管其的增减方向如何 比较输入信号。 比较器电路100包括对应于比较输入信号IN和参考输入信号REF之间的电位差进行充电或放电的电容元件4，如果电压高于阈值电压则输出高电平的模拟缓冲器部分5 Vth和低电平，如果它小于阈值电压Vth，边缘检测部分7检测模拟缓冲器部分5的前沿和后沿以便输出上升信号UP和下降信号DOWN以及电荷泵部分8 其对与上升信号UP相对应的电容部分进行充电，并且将对应于向下信号DOWN的电容部分放电。