公开(公告)号：US20050194970A1

公开(公告)日：2005-09-08

申请号：US10795930

申请日：2004-03-08

申请人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

发明人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

IPC分类号： G01B7/14

CPC分类号： G01V3/081

摘要： A proximity detector includes a fine DAC and a coarse DAC, outputs of which are summed to provide a tracking signal for tracking a magnetic field signal. The proximity detector provides two mode of operation. In a first mode of operation the coarse and fine DACs operate in combination as one higher order DAC. In a second mode of operation, the coarse DAC is provided with one or more extra counts, allowing the tracking signal to move more rapidly to track a rapidly changing magnetic field signal. In another embodiment, the proximity detector also includes an offset circuit for bringing at least one of the magnetic field signal and the tracking signal towards the other one of the magnetic field signal and the tracking signal.

摘要翻译： 接近检测器包括精细DAC和粗略DAC，其输出相加以提供用于跟踪磁场信号的跟踪信号。 接近检测器提供两种操作模式。 在第一种工作模式下，粗略和精细的DAC作为一个高阶DAC组合工作。 在第二种操作模式中，粗略的DAC具有一个或多个额外的计数，允许跟踪信号更快地移动以跟踪快速变化的磁场信号。 在另一个实施例中，接近检测器还包括用于将磁场信号和跟踪信号中的至少一个朝向磁场信号和跟踪信号中的另一个的偏移电路。

公开(公告)号：US07368904B2

公开(公告)日：2008-05-06

申请号：US11673728

申请日：2007-02-12

申请人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

发明人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

IPC分类号： G01B7/14

CPC分类号： G01V3/081

摘要： A proximity detector includes a fine DAC and a coarse DAC, outputs of which are summed to provide a tracking signal for tracking a magnetic field signal. The proximity detector provides two mode of operation. In a first mode of operation the coarse and fine DACs operate in combination as one higher order DAC. In a second mode of operation, the coarse DAC is provided with one or more extra counts, allowing the tracking signal to move more rapidly to track a rapidly changing magnetic field signal. In another embodiment, the proximity detector also includes an offset circuit for bringing at least one of the magnetic field signal and the tracking signal towards the other one of the magnetic field signal and the tracking signal.

摘要翻译： 接近检测器包括精细DAC和粗略DAC，其输出相加以提供用于跟踪磁场信号的跟踪信号。 接近检测器提供两种操作模式。 在第一种工作模式下，粗略和精细的DAC作为一个高阶DAC组合工作。 在第二种操作模式中，粗略的DAC具有一个或多个额外的计数，允许跟踪信号更快地移动以跟踪快速变化的磁场信号。 在另一个实施例中，接近检测器还包括用于将磁场信号和跟踪信号中的至少一个朝向磁场信号和跟踪信号中的另一个的偏移电路。

公开(公告)号：US20070132450A1

公开(公告)日：2007-06-14

申请号：US11673728

申请日：2007-02-12

申请人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

发明人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

IPC分类号： G01B7/14

CPC分类号： G01V3/081

摘要： A proximity detector includes a fine DAC and a coarse DAC, outputs of which are summed to provide a tracking signal for tracking a magnetic field signal. The proximity detector provides two mode of operation. In a first mode of operation the coarse and fine DACs operate in combination as one higher order DAC. In a second mode of operation, the coarse DAC is provided with one or more extra counts, allowing the tracking signal to move more rapidly to track a rapidly changing magnetic field signal. In another embodiment, the proximity detector also includes an offset circuit for bringing at least one of the magnetic field signal and the tracking signal towards the other one of the magnetic field signal and the tracking signal.

摘要翻译： 接近检测器包括精细DAC和粗略DAC，其输出相加以提供用于跟踪磁场信号的跟踪信号。 接近检测器提供两种操作模式。 在第一种工作模式下，粗略和精细的DAC作为一个高阶DAC组合工作。 在第二种操作模式中，粗略的DAC具有一个或多个额外的计数，允许跟踪信号更快地移动以跟踪快速变化的磁场信号。 在另一个实施例中，接近检测器还包括用于将磁场信号和跟踪信号中的至少一个朝向磁场信号和跟踪信号中的另一个的偏移电路。

公开(公告)号：US07199579B2

公开(公告)日：2007-04-03

申请号：US10795930

申请日：2004-03-08

申请人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

发明人： Karl Scheller ,  Gerardo Monreal ,  Jason Stauth

IPC分类号： G01B7/14

CPC分类号： G01V3/081

摘要： A proximity detector includes a fine DAC and a coarse DAC, outputs of which are summed to provide a tracking signal for tracking a magnetic field signal. The proximity detector provides two mode of operation. In a first mode of operation the coarse and fine DACs operate in combination as one higher order DAC. In a second mode of operation, the coarse DAC is provided with one or more extra counts, allowing the tracking signal to move more rapidly to track a rapidly changing magnetic field signal. In another embodiment, the proximity detector also includes an offset circuit for bringing at least one of the magnetic field signal and the tracking signal towards the other one of the magnetic field signal and the tracking signal.

摘要翻译： 接近检测器包括精细DAC和粗略DAC，其输出相加以提供用于跟踪磁场信号的跟踪信号。 接近检测器提供两种操作模式。 在第一种工作模式下，粗略和精细的DAC作为一个高阶DAC组合工作。 在第二种操作模式中，粗略的DAC具有一个或多个额外的计数，允许跟踪信号更快地移动以跟踪快速变化的磁场信号。 在另一实施例中，接近检测器还包括用于将磁场信号和跟踪信号中的至少一个朝向磁场信号和跟踪信号中的另一个的偏移电路。

公开(公告)号：US20080143326A1

公开(公告)日：2008-06-19

申请号：US12041052

申请日：2008-03-03

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01B7/14

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

摘要翻译： 在第一时间间隔期间，当第二检测器的输出是准确的时候，在第一时间间隔之后，使用第一，真实开启状态（TPOS）检测器检测通过磁性物品并转换到第二运行模式检测器的装置和方法。 相位比较器响应于第一和第二检测器的输出信号，并且提供指示两个输出信号之间的相位关系变化的控制信号。 由相位比较器控制的输出开关作为检测器输出信号，提供第一时间间隔期间的第一检测器输出信号，此后提供第二检测器输出信号。 与TPOS检测器相关联的阈值信号在第一时间间隔的第一部分期间处于固定电平，并且在第一时间间隔的第二部分期间响应于自动增益控制电路进行调整，以便减少相关的相位误差 从TPOS检测器转换到运行模式检测器。 还描述了用于更新作为峰 - 峰值磁场传感器信号的百分比的运行模式阈值信号的装置和方法，从而减少不必要的更新事件。

公开(公告)号：US07046000B1

公开(公告)日：2006-05-16

申请号：US10989433

申请日：2004-11-17

申请人： Takashi Hara ,  Kazuhiro Kamiya ,  Kenichi Taguchi ,  Toshiyuki Matsuo ,  Takayoshi Tsuzuki ,  Glenn Forrest ,  Karl Scheller ,  Ravi Vig

发明人： Takashi Hara ,  Kazuhiro Kamiya ,  Kenichi Taguchi ,  Toshiyuki Matsuo ,  Takayoshi Tsuzuki ,  Glenn Forrest ,  Karl Scheller ,  Ravi Vig

IPC分类号： G01B7/30

CPC分类号： G01D5/147 ,  G01D5/24452 ,  G01D5/2448 ,  G01D5/2449

摘要： Disclosed is a rotation detecting sensor suitable for use under a vibration-abundant condition as e.g. a sensor disposed in an automobile body for detecting rotation of an engine or ABS. The sensor includes a detecting element for detecting rotation of a rotary body as a change in a magnetic flux and outputting a signal and an integrated circuit for processing the amplified signal into a pulse corresponding to the detected rotation of the rotary body. The signal processing includes an initialization such as a gain adjustment for obtaining an appropriate gain for use in the subsequent process of conversion of the amplified signal to the pulse. According to this invention, a re-initialization is effected to obtain a new initial value such as a new gain if the previously effected initialization is determined inappropriate.

摘要翻译： 公开了一种旋转检测传感器，适用于振动充足的条件下使用。 设置在汽车主体中用于检测发动机或ABS的旋转的传感器。 传感器包括用于检测旋转体的旋转的检测元件作为磁通量的变化，并输出信号和用于将放大的信号处理为与所检测到的旋转体的旋转相对应的脉冲的集成电路。 信号处理包括诸如增益调整的初始化，用于获得用于将放大信号转换为脉冲的后续处理中使用的适当增益。 根据本发明，如果先前影响的初始化被确定为不适当，则进行重新初始化以获得新的初始值，例如新的增益。

公开(公告)号：US07548056B2

公开(公告)日：2009-06-16

申请号：US12041052

申请日：2008-03-03

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01B7/14

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

摘要翻译： 在第一时间间隔期间，当第二检测器的输出是准确的时候，在第一时间间隔之后，使用第一，真实开启状态（TPOS）检测器检测通过磁性物品并转换到第二运行模式检测器的装置和方法。 相位比较器响应于第一和第二检测器的输出信号，并且提供指示两个输出信号之间的相位关系变化的控制信号。 由相位比较器控制的输出开关作为检测器输出信号，提供第一时间间隔期间的第一检测器输出信号，此后提供第二检测器输出信号。 与TPOS检测器相关联的阈值信号在第一时间间隔的第一部分期间处于固定电平，并且在第一时间间隔的第二部分期间响应于自动增益控制电路进行调整，以便减少相关的相位误差 从TPOS检测器转换到运行模式检测器。 还描述了用于更新作为峰 - 峰值磁场传感器信号的百分比的运行模式阈值信号的装置和方法，从而减少不必要的更新事件。

公开(公告)号：US20080143327A1

公开(公告)日：2008-06-19

申请号：US12041055

申请日：2008-03-03

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01B7/14

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

公开(公告)号：US20070164732A1

公开(公告)日：2007-07-19

申请号：US11333522

申请日：2006-01-17

申请人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

发明人： Cory Voisine ,  Devon Fernandez ,  Karl Scheller ,  Ravi Vig ,  Kirsten Doogue

IPC分类号： G01P3/48

CPC分类号： G01P3/487 ,  G01D5/147 ,  G01P3/481

摘要： Apparatus and methods for detecting passing magnetic articles using a first, True Power On State (TPOS) detector during a first time interval and transitioning to a second, running mode detector after the first time interval, when the output of the second detector is accurate. A phase comparator is responsive to the output signal of the first and second detectors and provides a control signal indicative of a change in the phase relationship between the two output signals. An output switch controlled by the phase comparator provides, as the detector output signal, the first detector output signal during the first time interval and the second detector output signal thereafter. A threshold signal associated with the TPOS detector is at a fixed level during a first portion of the first time interval and is adjusted during a second portion of the first time interval in response to an automatic gain control circuit in order to reduce the phase error associated with transitioning from the TPOS detector to the running mode detector. Also described are apparatus and methods for updating a running mode threshold signal that is a percentage of the peak-to-peak magnetic field sensor signal, so that unnecessary update events are reduced.

摘要翻译： 在第一时间间隔期间，当第二检测器的输出是准确的时候，在第一时间间隔之后，使用第一，真实开启状态（TPOS）检测器检测通过磁性物品并转换到第二运行模式检测器的装置和方法。 相位比较器响应于第一和第二检测器的输出信号，并且提供指示两个输出信号之间的相位关系变化的控制信号。 由相位比较器控制的输出开关作为检测器输出信号，提供第一时间间隔期间的第一检测器输出信号，此后提供第二检测器输出信号。 与TPOS检测器相关联的阈值信号在第一时间间隔的第一部分期间处于固定电平，并且在第一时间间隔的第二部分期间响应于自动增益控制电路进行调整，以便减少相关的相位误差 从TPOS检测器转换到运行模式检测器。 还描述了用于更新作为峰 - 峰值磁场传感器信号的百分比的运行模式阈值信号的装置和方法，从而减少不必要的更新事件。

公开(公告)号：US20060125530A1

公开(公告)日：2006-06-15

申请号：US11010704

申请日：2004-12-13

申请人： Hernan Romero ,  Jay Towne ,  Karl Scheller

发明人： Hernan Romero ,  Jay Towne ,  Karl Scheller

IPC分类号： H03K5/00

CPC分类号： G11C27/026 ,  G11C27/024

摘要： A track-and-hold peak detector circuit, which can operate at low input signal frequencies, includes a capacitor to hold a peak voltage of the input signal and logic circuitry that reduces an effect of leakage current into or out of the capacitor, and therefore, provides protection against self-switching of an output signal of the peak detector circuit.

摘要翻译： 可以在低输入信号频率下操作的跟踪和保持峰值检测器电路包括用于保持输入信号和逻辑电路的峰值电压的电容器，该电路降低泄漏电流进入或流出电容器的影响，因此 提供对峰值检测器电路的输出信号的自切换的保护。