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公开(公告)号：US5568071A
公开(公告)日：1996-10-22
申请号：US375252
申请日：1995-01-19
摘要： A pulse phase difference encoding circuit provides a digital signal indicating a phase difference between a first input pulse and a second input pulse. The first input pulse is provided to and circulated in a ring signal delay circuit having a plurality of signal delay elements that are connected in series. Intermediate points between the delay elements provide delayed pulses having different delay times. Upon receiving the second input pulse, a selector selects one delay pulse provided by the delay element at which the first input pulse has arrived, and generates a digital positional signal indicating a position of the selected delay element. The number of rounds of circulation of the first input pulse in the ring signal delay circuit is separately counted. According to the number of rounds of circulation of the first pulse and the positional signal, the digital signal indicating the phase difference between the first and second input pulses is formed.
摘要翻译： 脉冲相位差编码电路提供指示第一输入脉冲和第二输入脉冲之间的相位差的数字信号。 将第一输入脉冲提供给具有串联连接的多个信号延迟元件的环形信号延迟电路并循环。 延迟元件之间的中间点提供具有不同延迟时间的延迟脉冲。 在接收到第二输入脉冲时，选择器选择由第一输入脉冲到达的延迟元件提供的一个延迟脉冲，并产生指示所选择的延迟元件的位置的数字位置信号。 环路信号延迟电路中的第一输入脉冲的循环次数被分开计数。 根据第一脉冲的循环次数和位置信号，形成表示第一和第二输入脉冲之间的相位差的数字信号。
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公开(公告)号：US5128624A
公开(公告)日：1992-07-07
申请号：US645874
申请日：1991-01-25
摘要： A pulse phase difference encoding circuit provides a digital signal indicating a phase difference between a first input pulse and a second input pulse. The first input pulse is provided to and circulated in a ring signal delay circuit having a plurality of signal delay elements that are connected in series. Intermediate points between the delay elements provide delayed pulses having different delay times. Upon receiving the second input pulse, a selector selects one delay pulse provided by the delay element at which the first input pulse has arrived, and generates a digital positional signal indicating a position of the selected delay element. The number of rounds of circulation of the first input pulse in the ring signal delay circuit is separately counted. According to the number of rounds of circulation of the first pulse and the positional signal, the digital signal indicating the phase difference between the first and second input phases is formed.
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3.发明授权Physical quantity detection device for converting a physical quantity into a corresponding time interval 失效用于将物理量转换为对应的时间间隔的物理量检测装置
公开(公告)号：US5686835A
公开(公告)日：1997-11-11
申请号：US589093
申请日：1996-01-19
CPC分类号： G01R33/09
摘要： A magnetic detection device including at least one oscillator circuit having a magnetoresistance element which converts a change of magnetism detected into a digital signal and a comparator for comparing the digitalized oscillating frequency of the oscillator circuit with another digitalized oscillating frequency generated from another oscillating circuit by taking a ratio thereof or by detecting a phase difference between the pulse signals. Utilizing the magnetic detection device, the amount of change of magnetism can be stably detected with a high accuracy within a wide range of ambient usage temperatures. The physical quantity detection device includes a magnetic detection device which can detect any physical quantity with a high accuracy.
摘要翻译： 一种磁检测装置，包括至少一个具有将检测到的磁性变化转换为数字信号的磁阻元件的振荡器电路和比较器，用于将振荡器电路的数字化振荡频率与从另一振荡电路产生的另一数字化振荡频率进行比较， 或者通过检测脉冲信号之间的相位差。 利用磁检测装置，能够在宽的环境使用温度范围内以高精度稳定地检测磁性变化量。 物理量检测装置包括能够高精度地检测任何物理量的磁检测装置。
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4.发明授权Magnetic detecting circuit having magnetoresistance effective elements oriented in at least two different directions 失效具有在至少两个不同方向上取向的磁阻有效元件的磁检测电路
公开(公告)号：US5359287A
公开(公告)日：1994-10-25
申请号：US89610
申请日：1993-07-12
摘要： A magnetic detecting circuit has a magneto resistance element which converts a change of magnetism detected into a signal. A plurality of these magneto resistive elements are provided on a plane, and are oriented on the plane in two opposite directions having angles, relative to a bias direction, having substantially equal absolute values. The placement in opposite directions allows the resistance values from the elements to change in approximately the same direction as the object moves, to allow a monotonic change in the bias magnetic field. The change of the bias magnetic field can be detected from the change of resistance values of the magneto resistive elements.
摘要翻译： 磁检测电路具有将检测到的磁性变化转换为信号的磁阻元件。 多个这样的磁阻元件设置在平面上，并且在两个相反的方向上在平面上取向，该角度相对于偏置方向具有基本相等的绝对值。 沿相反方向的放置允许来自元件的电阻值与物体移动大致相同的方向改变，以允许偏置磁场中的单调变化。 可以从磁阻元件的电阻值的变化来检测偏置磁场的变化。
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公开(公告)号：US5289135A
公开(公告)日：1994-02-22
申请号：US909211
申请日：1992-07-06
摘要： A pulse phase difference encoding circuit provides a digital signal indicating a phase difference between a first input pulse and a second input pulse. The first input pulse is provided to and circulated in a ring signal delay circuit having a plurality of signal delay elements that are connected in series. Intermediate points between the delay elements provide delayed pulses having different delay times. Upon receiving the second input pulse, a selector selects one delay pulse provided by the delay element at which the first input pulse has arrived, and generates a digital positional signal indicating a position of the selected delay element. The number of rounds of circulation of the first input pulse in the ring signal delay circuit is separately counted. According to the number of rounds of circulation of the first pulse and the positional signal, the digital signal indicating the phase difference between the first and second input pulses is formed.
摘要翻译： 脉冲相位差编码电路提供指示第一输入脉冲和第二输入脉冲之间的相位差的数字信号。 将第一输入脉冲提供给具有串联连接的多个信号延迟元件的环形信号延迟电路并循环。 延迟元件之间的中间点提供具有不同延迟时间的延迟脉冲。 在接收到第二输入脉冲时，选择器选择由第一输入脉冲到达的延迟元件提供的一个延迟脉冲，并产生指示所选择的延迟元件的位置的数字位置信号。 环路信号延迟电路中的第一输入脉冲的循环次数被分开计数。 根据第一脉冲的循环次数和位置信号，形成表示第一和第二输入脉冲之间的相位差的数字信号。
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6.发明授权Magnetic detection device using an oscillator whose detection element is a magnetoresitance effective element 失效使用振荡器的磁性检测装置，检测元件是磁阻有效元件
公开(公告)号：US5134371A
公开(公告)日：1992-07-28
申请号：US467402
申请日：1990-01-18
申请人： Takamoto Watanabe , Yoshinori Ohtsuka , Muneaki Matsumoto , Tadashi Hattori , Kouichi Hoshino , Masanori Ohsawa , Katsumi Nakamura
发明人： Takamoto Watanabe , Yoshinori Ohtsuka , Muneaki Matsumoto , Tadashi Hattori , Kouichi Hoshino , Masanori Ohsawa , Katsumi Nakamura
摘要： A magnetic detection device including at least one oscillator circuit having a magnetoresistance element which converts a change of magnetism detected into a digital signal and a comparator for comparing the digitalized oscillating frequency of the oscillator circuit with another digitalized oscillating frequency generated from another oscillating circuit by taking a ratio thereof or by detecting a phase difference between the pulse signals. Utilizing the magnetic detection device, the amount of change of magnetism can be stably detected with a high accuracy within a wide range of ambient usage temperatures.Also, a physical quantity detection device including the magnetic detection device which can detect any physical quantity with a high accuracy.
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公开(公告)号：US5416444A
公开(公告)日：1995-05-16
申请号：US177682
申请日：1994-01-05
CPC分类号： H03K3/0315 , G01R25/08 , H03K5/131 , Y10S331/03
摘要： A ring oscillator for circulating pulse edges of two types therein includes an even number of inverting circuits connected in a ring. Each of the inverting circuits is operative to invert an input signal and output an inversion of the input signal. One of the inverting circuits is a first start inverting circuit which starts an operation of inverting an input signal in response to a first control signal applied from an external input. One of the inverting circuits except the first start inverting circuit and an inverting circuit immediately following the first start inverting circuit is a second start inverting circuit which starts an operation of inverting an input signal in response to a second control signal. A control signal inputting arrangement serves to input the second control signal to the second start inverting circuit during an interval from a first moment at which the first control signal is inputted into the first start inverting circuit and the first start inverting circuit starts the inverting operation to a second moment at which a pulse edge initially generated by the start of the inverting operation of the first start inverting circuit and travelling while being sequentially inverted by the inverting circuits enters the second start inverting circuit.
摘要翻译： 用于循环两种类型的脉冲边缘的环形振荡器包括以环形连接的偶数反相电路。 每个反相电路用于反转输入信号并输出输入信号的反相。 反相电路中的一个是第一启动反相电路，其响应于从外部输入施加的第一控制信号开始反相输入信号的操作。 除了第一启动反相电路和紧接在第一启动反相电路之后的反相电路之一的反相电路中的一个是响应于第二控制信号开始反相输入信号的操作的第二启动反相电路。 控制信号输入装置用于在从第一控制信号被输入到第一起动反向电路的第一时刻开始间隔期间将第二控制信号输入到第二启动反转电路，并且第一启动反相电路开始转换操作 第二时刻，由第一起动反转电路的反相操作开始初始产生的脉冲沿并且由反相电路顺序反转的第二时刻进入第二启动反相电路。
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公开(公告)号：US5396247A
公开(公告)日：1995-03-07
申请号：US31262
申请日：1993-03-15
CPC分类号： G04F10/005 , H03M1/14 , H03M1/0619 , H03M1/502 , H03M1/60
摘要： A pulse circulating circuit includes inverting circuits each for inverting an input signal and outputting an inversion of the input signal. A time of signal inversion by each of the inverting circuits varies in accordance with a power supply voltage applied thereto. One of the inverting circuits constitutes an inverting circuit for starting which is controllable in inversion operation. The pulse circulating circuit circulates a pulse signal therethrough after the inverting circuit for starting starts to operate. An input terminal subjected to an analog voltage signal is connected to power supply lines of the respective inverting circuits for applying the analog voltage signal to the inverting circuits as a power supply voltage fed thereto. A counter serves to count a number of times of complete circulation of the pulse signal through the pulse circulating circuit. A circulation position detecting device serves to detect a circulation position of the pulse signal in the pulse circulating circuit on the basis of output signals of the respective inverting circuits. A control device is operative for activating the inverting circuit for starting and thereby starting pulse circulating operation of the pulse circulating circuit, and for activating the circulation position detecting means at a moment which follows a moment of starting pulse circulating operation by a given time. An output device is operative for outputting digital data as an A/D conversion result. The A/D conversion result data has lower bits composed of output digital data of the circulation position detecting device, and higher bits composed of output digital data of the counter.
摘要翻译： 脉冲循环电路包括各自用于反相输入信号并输出输入信号的反相的反相电路。 每个反相电路的信号反转时间根据施加到其上的电源电压而变化。 反相电路中的一个构成在反转操作中可控制的用于启动的反相电路。 脉冲循环电路在用于启动的反相电路开始运行之后循环脉冲信号。 经受模拟电压信号的输入端子连接到各个反相电路的电源线，用于将模拟电压信号作为馈送到其的电源电压施加到反相电路。 计数器用于通过脉冲循环回路计数脉冲信号的完全循环次数。 循环位置检测装置用于根据各个反相电路的输出信号检测脉冲信号在脉冲循环电路中的循环位置。 控制装置用于启动反相电路，用于启动脉冲循环电路的脉冲循环操作，从而启动循环位置检测装置，该脉冲循环位置检测装置在与给定时间一起启动脉冲循环操作的瞬间激活。 输出装置用于输出数字数据作为A / D转换结果。 A / D转换结果数据具有由循环位置检测装置的输出数字数据组成的较低位，以及由计数器的输出数字数据构成的较高位。
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公开(公告)号：US5528200A
公开(公告)日：1996-06-18
申请号：US392246
申请日：1995-02-22
CPC分类号： H03K3/0315 , G01R25/08 , H03K5/131 , Y10S331/03
摘要： A ring oscillator for circulating pulse edges of two types therein includes an even number of inverting circuits connected in a ring. Each of the inverting circuits is operative to invert an input signal and output an inversion of the input signal. One of the inverting circuits is a first start inverting circuit which starts an operation of inverting an input signal in response to a first control signal applied from an external input. One of the inverting circuits except the first start inverting circuit and an inverting circuit immediately following the first start inverting circuit is a second start inverting circuit which starts an operation of inverting an input signal in response to a second control signal. A control signal inputting arrangement serves to input the second control signal to the second start inverting circuit during an interval from a first moment at which the first control signal is input into the first start inverting circuit and the first start inverting circuit starts the inverting operation to a second moment at which a pulse edge initially generated by the start of the inverting operation of the first start inverting circuit and travelling while being sequentially inverted by the inverting circuits enters the second start inverting circuit.
摘要翻译： 用于循环两种类型的脉冲边缘的环形振荡器包括以环形连接的偶数反相电路。 每个反相电路用于反转输入信号并输出输入信号的反相。 反相电路中的一个是第一启动反相电路，其响应于从外部输入施加的第一控制信号开始反相输入信号的操作。 除了第一启动反相电路和紧接在第一启动反相电路之后的反相电路之一的反相电路中的一个是响应于第二控制信号开始反相输入信号的操作的第二启动反相电路。 控制信号输入装置用于在从第一控制信号输入到第一启动反相电路的第一时刻起的间隔期间将第二控制信号输入到第二启动反相电路，并且第一启动反相电路开始反相操作 第二时刻，由第一起动反转电路的反相操作开始初始产生的脉冲沿并且由反相电路顺序反转的第二时刻进入第二启动反相电路。
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10.发明授权
公开(公告)号：US5420546A
公开(公告)日：1995-05-30
申请号：US250628
申请日：1994-05-27
CPC分类号： H03L7/0997 , H03L7/0996
摘要： A digitally controllable oscillator is provided with a variable-frequency ring oscillator including an odd number of inverting circuits connected together in a ring formation. The oscillator has a pulse circulation device to circulate a pulse signal through the inverters to introduce some delay in the signal. Digital data is produced by a data controller device. A counter is connected to the pulse circulation device and counts the number of times the pulse signal circulates through the inverters. A pulse is generated at a desired frequency based upon the counter's output and the introduced delay. A control device determines which of a plurality of delay signals is applied to the circuit that generates the pulse at the desired frequency.
摘要翻译： 数字可控振荡器具有可变频率环形振荡器，该可变频率环形振荡器包括在环形结构中连接在一起的奇数个反相电路。 振荡器具有脉冲循环装置，用于通过反相器循环脉冲信号以在信号中引入一些延迟。 数据数据由数据控制器装置产生。 计数器连接到脉冲循环装置，并对脉冲信号通过逆变器循环的次数进行计数。 基于计数器的输出和引入的延迟，以期望的频率产生脉冲。 控制装置确定将多个延迟信号中的哪一个施加到产生所需频率的脉冲的电路。
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