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1. 发明授权

US06794863B2 Magnetic field sensor, method for detecting magnetic field and device for detecting magnetic field 失效
公开(公告)号：US06794863B2
公开(公告)日：2004-09-21
申请号：US10706279
申请日：2003-11-13
申请人： Tadata Hatanaka
发明人： Tadata Hatanaka
IPC分类号： G01R3307
CPC分类号： G01R33/07 , G01D5/145
摘要： The present invention provides a magnetic sensor with a simple configuration which detects a magnetic field strength of both polarities and which consumes a small amount of power. The magnetic field sensor of the present invention comprises a first switch part which inputs a signal outputted from a magnetoelectric element which outputs a signal corresponding to an applied magnetic field, and which outputs a signal, switching so that a polarity during a first period and a fourth period and a polarity during a second period and a third period are mutually opposite; an amplifier which amplifies an output signal of the first switch part and outputs a signal to its output terminal pair; a memory element, both ends of which are connected to the output terminal pair of the amplifier, and which holds a voltage outputted from the amplifier; a second switch part which is inserted and makes a connection between one of the output terminal and one terminal of the memory element, and which closes during the first period and the third period and opens during the second period and the fourth period; and a switch output terminal which outputs an output signal of a first polarity of the second switch part during the second period, and which outputs an output signal of a second polarity of the second switch part during the fourth period.

2. 发明授权

US06861839B2 Magnetic field sensor 失效
标题翻译：磁场传感器
公开(公告)号：US06861839B2
公开(公告)日：2005-03-01
申请号：US10826984
申请日：2004-04-19
申请人： Jun-ichiro Hara , Tadata Hatanaka
发明人： Jun-ichiro Hara , Tadata Hatanaka
IPC分类号： G01R33/07
CPC分类号： G01R33/07
摘要： A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.
摘要翻译：一种磁场传感器，包括放大器和磁场元件，用于根据施加的磁场的强度将信号输出到开关电路。开关电路将由外部两相信号选择的信号输出到放大信号的放大器，并将得到的电压输出到存储元件的第一端。具有连接到存储元件的第二端的一端的开关由两相信号控制。开关在两相信号的第一阶段闭合，使得存储元件存储放大器的输出电压，并且在第二阶段中打开，导致放大器的输出电压的矢量和被存储在存储元件中，向连接到存储元件的第二端的信号输出端提供输出电压。

3. 发明授权

US07737688B2 Magnetic field detecting apparatus 失效
标题翻译：磁场检测装置
公开(公告)号：US07737688B2
公开(公告)日：2010-06-15
申请号：US12182739
申请日：2008-07-30
申请人： Takuya Tomida , Tadata Hatanaka , Shigeo Masai
发明人： Takuya Tomida , Tadata Hatanaka , Shigeo Masai
IPC分类号： G01R33/00 , G01R33/06
CPC分类号： G01R33/07
摘要： The magnetic field detecting apparatus is provided with: a magnetic field detecting unit for outputting one of two signals having different potential levels from each other in response to a perpheral magnetic field; an energizing control unit for producing a periodic energizing control signal indicative of timing at which the magnetic field detecting unit is energized by employing a clock signal and another signal obtained by frequency-dividing, or frequency-multiplying the clock signal, and for supplying the produced energizing control signal to the magnetic field detecting unit; a first inverting unit for inverting the potential level of the output signal of the magnetic field detecting unit; and an energizing time period control unit for supplying a time period control signal to the energizing control unit, the time period control signal controlling the time period of the energizing control signal in response to the potential level of the output signal of the magnetic field detecting unit, and the potential level of the signal obtained by inverting the potential level of the output signal by the first inverting unit. The energizing time period control unit supplies any one of two pieces of the energizing control signals whose durations and time periods are different from each other, during which the magnetic field detecting unit is not energized, in response to the potential level of the time period control signal supplied from the energizing time period control unit.
摘要翻译：磁场检测装置具有：磁场检测单元，用于响应于永久磁场输出具有不同电位电平的两个信号之一; 激励控制单元，用于通过采用时钟信号产生表示磁场检测单元被激励的定时的周期性激励控制信号，以及通过对时钟信号进行分频或倍频获得的另一信号，以及用于提供所产生的向所述磁场检测单元通电控制信号; 第一反相单元，用于反转磁场检测单元的输出信号的电位电平; 以及通电时间控制单元，用于向激励控制单元提供时间段控制信号，所述时间段控制信号响应于磁场检测单元的输出信号的电位电平来控制激励控制信号的时间段以及通过由第一反相单元反转输出信号的电位电平而获得的信号的电位电平。励磁时间段控制单元响应于时间段控制的电位电平，提供持续时间和时间周期彼此不同的两个激励控制信号中的任何一个，在该期间磁场检测单元未通电信号从通电时间段控制单元提供。

4. 发明授权

US07459887B2 Voltage detection circuit, overcurrent detection circuit, charging current control system, and voltage detection method 有权
标题翻译：电压检测电路，过流检测电路，充电电流控制系统和电压检测方法
公开(公告)号：US07459887B2
公开(公告)日：2008-12-02
申请号：US11258743
申请日：2005-10-26
申请人： Tadata Hatanaka
发明人： Tadata Hatanaka
IPC分类号： H02J7/06
CPC分类号： G01R19/16571 , G01R19/0084 , G01R19/0092 , H02J7/045
摘要： A voltage detection circuit detects an input voltage in first and second periods to average by using a switch circuit and a sampling circuit. At this time, the input voltage of the second period is added to the input voltage of the first period so that a polarity of variations is opposite, the variations being in relative errors of a plurality of resistors for dividing the input voltage, in input offset voltages of a voltage amplifier for amplifying an inputted minute voltage, and in input offset voltages of a comparator for comparing an amplified voltage value with a certain level.
摘要翻译：电压检测电路通过使用开关电路和采样电路来检测第一和第二周期中的输入电压以平均。此时，将第二周期的输入电压加到第一周期的输入电压，使得变化的极性相反，这些变化是用于分压输入电压的多个电阻的相对误差，在输入偏移用于放大输入的微小电压的电压放大器的电压以及用于将放大的电压值与一定电平进行比较的比较器的输入偏移电压。

5. 发明申请

US20090033324A1 MAGNETIC FIELD DETECTING APPARATUS 失效
标题翻译：磁场检测装置
公开(公告)号：US20090033324A1
公开(公告)日：2009-02-05
申请号：US12182739
申请日：2008-07-30
申请人： Takuya Tomida , Tadata Hatanaka , Shigeo Masai
发明人： Takuya Tomida , Tadata Hatanaka , Shigeo Masai
IPC分类号： G01R33/00
CPC分类号： G01R33/07
摘要： The magnetic field detecting apparatus is provided with: a magnetic field detecting unit for outputting one of two signals having different potential levels from each other in response to a perpheral magnetic field; an energizing control unit for producing a periodic energizing control signal indicative of timing at which the magnetic field detecting unit is energized by employing a clock signal and another signal obtained by frequency-dividing, or frequency-multiplying the clock signal, and for supplying the produced energizing control signal to the magnetic field detecting unit; a first inverting unit for inverting the potential level of the output signal of the magnetic field detecting unit; and an energizing time period control unit for supplying a time period control signal to the energizing control unit, the time period control signal controlling the time period of the energizing control signal in response to the potential level of the output signal of the magnetic field detecting unit, and the potential level of the signal obtained by inverting the potential level of the output signal by the first inverting unit. The energizing time period control unit supplies any one of two pieces of the energizing control signals whose durations and time periods are different from each other, during which the magnetic field detecting unit is not energized, in response to the potential level of the time period control signal supplied from the energizing time period control unit.
摘要翻译：磁场检测装置具有：磁场检测单元，用于响应于永久磁场输出具有不同电位电平的两个信号之一; 激励控制单元，用于通过采用时钟信号产生表示磁场检测单元被激励的定时的周期性激励控制信号，以及通过对时钟信号进行分频或倍频获得的另一信号，以及用于提供所产生的向所述磁场检测单元通电控制信号; 第一反相单元，用于反转磁场检测单元的输出信号的电位电平; 以及通电时间控制单元，用于向激励控制单元提供时间段控制信号，所述时间段控制信号响应于磁场检测单元的输出信号的电位电平来控制激励控制信号的时间段以及通过由第一反相单元反转输出信号的电位电平而获得的信号的电位电平。励磁时间段控制单元响应于时间段控制的电位电平，提供持续时间和时间周期彼此不同的两个激励控制信号中的任何一个，在该期间磁场检测单元未通电信号从通电时间段控制单元提供。

6. 发明申请

US20060113969A1 Voltage detection circuit, overcurrent detection circuit, charging current control system, and voltage detection method 有权
标题翻译：电压检测电路，过流检测电路，充电电流控制系统和电压检测方法
公开(公告)号：US20060113969A1
公开(公告)日：2006-06-01
申请号：US11258743
申请日：2005-10-26
申请人： Tadata Hatanaka
发明人： Tadata Hatanaka
IPC分类号： G05F1/00
CPC分类号： G01R19/16571 , G01R19/0084 , G01R19/0092 , H02J7/045
摘要： A voltage detection circuit detects an input voltage in first and second periods to average by using a switch circuit and a sampling circuit. At this time, the input voltage of the second period is added to the input voltage of the first period so that a polarity of variations is opposite, the variations being in relative errors of a plurality of resistors for dividing the input voltage, in input offset voltages of a voltage amplifier for amplifying an inputted minute voltage, and in input offset voltages of a comparator for comparing an amplified voltage value with a certain level.
摘要翻译：电压检测电路通过使用开关电路和采样电路来检测第一和第二周期中的输入电压以平均。此时，将第二周期的输入电压加到第一周期的输入电压，使得变化的极性相反，这些变化是用于分压输入电压的多个电阻的相对误差，在输入偏移用于放大输入的微小电压的电压放大器的电压以及用于将放大的电压值与一定电平进行比较的比较器的输入偏移电压。

7. 发明授权

US07049812B2 Magnetic field sensor having memory element 有权
标题翻译：具有存储元件的磁场传感器
公开(公告)号：US07049812B2
公开(公告)日：2006-05-23
申请号：US10829004
申请日：2004-04-21
申请人： Jun-ichiro Hara , Tadata Hatanaka
发明人： Jun-ichiro Hara , Tadata Hatanaka
IPC分类号： G01R33/06
CPC分类号： G01R33/07
摘要： A magnetic field sensor including an amplifier and a magnetic field element for outputting a two-phase signal according to an applied magnetic field strength. Polarities of the two phases of the signal are mutually opposite. The amplifier amplifies the signal and outputs a resulting voltage across a pair of output terminals, which are connected to both ends of a condenser. A switch makes a connection between one of the output terminals and one end of the condenser. The switch closes in a first phase of the two-phase signal and opens in a second phase. A comparator inputting voltage across both ends of the switch converts the result of the comparison, based on a predetermined voltage, into a binary output signal.
摘要翻译：一种磁场传感器，包括放大器和磁场元件，用于根据施加的磁场强度输出两相信号。信号的两相极化相互相反。放大器放大信号并输出一对连接到冷凝器两端的输出端。开关在一个输出端子和冷凝器的一端之间进行连接。开关在两相信号的第一相中闭合，并在第二阶段打开。比较器输入开关两端的电压将基于预定电压的比较结果转换为二进制输出信号。

8. 发明授权

US06777932B2 Magnetic field sensor 有权
公开(公告)号：US06777932B2
公开(公告)日：2004-08-17
申请号：US09812791
申请日：2001-03-20
申请人： Jun-ichiro Hara , Tadata Hatanaka
发明人： Jun-ichiro Hara , Tadata Hatanaka
IPC分类号： G01R3306
CPC分类号： G01R33/07
摘要： A magnetic field sensor including an amplifier and a magnetic field element for outputting a signal to a switch circuit according to the strength of an applied magnetic field. The switch circuit outputs a signal selected by an external two-phase signal to an amplifier that amplifies the signal and outputs a resulting voltage to a first end of a memory element. A switch, having one end connected to a second end of the memory element, is controlled by the two-phase signal. The switch closes in a first phase of the two-phase signal causing the memory element to store the output voltage of the amplifier, and opens in a second phase causing a vector sum of the output voltage the amplifier to be stored in the memory element and providing the output voltage to a signal output terminal connected to the second end of the memory element.

9. 发明授权

US06727684B2 Magnetic field sensor 有权
标题翻译：磁场传感器
公开(公告)号：US06727684B2
公开(公告)日：2004-04-27
申请号：US10191520
申请日：2002-07-10
申请人： Tadata Hatanaka
发明人： Tadata Hatanaka
IPC分类号： G01R3307
CPC分类号： G01D5/145 , G01D3/02
摘要： A magnetic field sensor includes: a Hall element; a voltage amplifier for amplifying an output voltage from the Hall element so as to output an amplified signal; a voltage comparison circuit for receiving the amplified signal; a switch circuit provided between the voltage amplifier and the voltage comparison circuit for inverting a polarity of the amplified signal; and a latch circuit for holding an output signal from the voltage comparison circuit. The voltage comparison circuit inverts a polarity of a hysteresis voltage that determines a reference value of a magnetic field intensity in response to a first synchronizing signal, which triggers a detection of a magnetic field, and a second synchronizing signal following the first synchronizing signal.
摘要翻译：磁场传感器包括：霍尔元件; 用于放大来自霍尔元件的输出电压以便输出放大信号的电压放大器; 用于接收放大信号的电压比较电路; 在所述电压放大器和所述电压比较电路之间设置用于反转所述放大信号的极性的开关电路; 以及用于保持来自电压比较电路的输出信号的锁存电路。电压比较电路根据触发磁场检测的第一同步信号和跟随第一同步信号的第二同步信号，反转确定磁场强度的基准值的滞后电压的极性。

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