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1.发明授权Direct current (DC) correction circuit for a time of flight (TOF) photodiode front end 有权用于飞行时间（TOF）光电二极管前端的直流（DC）校正电路公开(公告)号：US08530819B2
公开(公告)日：2013-09-10
申请号：US13013146
申请日：2011-01-25
IPC分类号： G05F1/10
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method that compensates for the effects of ambient light in a time of flight (TOF) sensor front end is provided. Moreover, a direct current (DC) correction loop is utilized at the front end, which removes a DC component from a current generated by the TOF sensor and accordingly prevents saturating the front end. The DC correction loop attenuates the DC component without adding significant thermal noise at a modulation frequency and provides a corrected signal to the front end circuitry. The corrected signal is processed and utilized to detect a position of an object within the optical field of the sensor.
摘要翻译： 提供了补偿飞行时间（TOF）传感器前端环境光影响的系统和方法。 此外，在前端使用直流（DC）校正回路，其从由TOF传感器产生的电流中去除DC分量，并因此防止前端饱和。 直流校正环路衰减直流分量，而不会在调制频率下增加明显的热噪声，并向前端电路提供校正信号。 经校正的信号被处理并用于检测物体在传感器的光场内的位置。
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2.发明申请公开(公告)号：US20110249134A1
公开(公告)日：2011-10-13
申请号：US12938481
申请日：2010-11-03
IPC分类号： H04N5/228 , H01L31/18 , G05F1/10 , H01L31/0224
CPC分类号： H01L31/03529 , G01S7/4816 , H01L31/11 , Y02E10/50
摘要： An imaging system, semiconductor device, and method of manufacture of a photo-detector device are disclosed. For example, an imaging system is disclosed, which includes a photo-detector unit including a plurality of conductive trenches formed within the photo-detector unit, and a plurality of electrical contacts, each electrical contact connected to a respective conductive trench. The imaging system further includes a light data processor unit coupled to an output of the photo-detector unit to convert an analog signal received from the photo-detector unit to a digital signal, a processing unit coupled to an output of the light data processor unit to generate a control signal in response to the digital signal, and a display unit coupled to an output of the processing unit to vary the intensity of an image displayed in response to the control signal.
摘要翻译： 公开了一种成像系统，半导体器件和光电检测器件的制造方法。 例如，公开了一种成像系统，其包括光检测器单元，其包括形成在光检测器单元内的多个导电沟槽和多个电触点，每个电触点连接到相应的导电沟槽。 成像系统还包括光数据处理器单元，其耦合到光检测器单元的输出，以将从光检测器单元接收的模拟信号转换为数字信号;处理单元，耦合到光数据处理器单元的输出 以响应于数字信号产生控制信号，以及耦合到处理单元的输出的显示单元，以响应于控制信号改变显示的图像的强度。
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公开(公告)号：US08274037B2
公开(公告)日：2012-09-25
申请号：US13013173
申请日：2011-01-25
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for automatically calibrating a Time-of-Flight (TOF) transceiver system for proximity/motion detection, is provided. Moreover, the system comprises a component that senses a signal (e.g., current or voltage) at an light emitting diode (LED), an attenuator, a signal injector at a sensor and a switching circuit that toggles between a normal mode (e.g., when signal from the sensor is input to the sensor front end) and a calibration mode (e.g., when signal from the attenuator is input to the sensor front end). During the calibration mode, the sensor front end identifies the phase delay error within the signal path, including board and/or package parasitic, and accounts for the phase delay error during proximity/motion detection in the normal mode.
摘要翻译： 提供了一种用于自动校准飞行时间（TOF）收发器系统进行接近/运动检测的系统和方法。 此外，该系统包括感测在发光二极管（LED），衰减器，传感器处的信号注入器和切换电路之间的信号（例如，电流或电压）的组件，其在正常模式（例如， 来自传感器的信号被输入到传感器前端）和校准模式（例如，当来自衰减器的信号被输入到传感器前端时）。 在校准模式期间，传感器前端识别信号路径中的相位延迟误差，包括板和/或封装寄生，并考虑到正常模式下接近/运动检测期间的相位延迟误差。
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4.发明申请公开(公告)号：US20110180693A1
公开(公告)日：2011-07-28
申请号：US13013199
申请日：2011-01-25
IPC分类号： H01J40/14
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： An area effective system and method for improving power supply rejection ratio (PSRR) in an optical sensor front end, is provided. Moreover, low pass filter (LPF) that enables the reference voltage in the front end of the optical sensor, to be referred to the same substrate as that employed by the sensor. In one example, the LPF includes a capacitor, implemented using a Deep-N-Well (DNW) depletion capacitor, which is utilized to connect the reference voltage to the same substrate. Additionally, the DNW allows an area efficient realization of the LPF. The system and method disclosed herein improves the PSRR by a factor of around 40 dB for 5 MHz modulation.
摘要翻译： 提供了一种用于改善光学传感器前端中的电源抑制比（PSRR）的区域有效系统和方法。 此外，使得能够将光学传感器前端的参考电压的低通滤波器（LPF）称为与传感器采用的相同的衬底。 在一个示例中，LPF包括使用深N阱（DNW）耗尽电容器实现的电容器，其用于将参考电压连接到相同的衬底。 此外，DNW允许区域高效地实现LPF。 本文所公开的系统和方法将对于5MHz调制的PSRR提高约40dB的系数。
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5.发明申请DIRECT CURRENT (DC) CORRECTION CIRCUIT FOR A TIME OF FLIGHT (TOF) PHOTODIODE FRONT END 有权飞行时间（TOF）光电前端的直流电流（直流）校正电路公开(公告)号：US20110181254A1
公开(公告)日：2011-07-28
申请号：US13013146
申请日：2011-01-25
IPC分类号： G05F1/10
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method that compensates for the effects of ambient light in a time of flight (TOF) sensor front end is provided. Moreover, a direct current (DC) correction loop is utilized at the front end, which removes a DC component from a current generated by the TOF sensor and accordingly prevents saturating the front end. The DC correction loop attenuates the DC component without adding significant thermal noise at a modulation frequency and provides a corrected signal to the front end circuitry. The corrected signal is processed and utilized to detect a position of an object within the optical field of the sensor.
摘要翻译： 提供了补偿飞行时间（TOF）传感器前端环境光影响的系统和方法。 此外，在前端使用直流（DC）校正回路，其从由TOF传感器产生的电流中去除DC分量，并因此防止前端饱和。 直流校正环路衰减直流分量，而不会在调制频率下增加明显的热噪声，并向前端电路提供校正信号。 经校正的信号被处理并用于检测物体在传感器的光场内的位置。
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6.发明申请公开(公告)号：US20110181892A1
公开(公告)日：2011-07-28
申请号：US13013173
申请日：2011-01-25
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for automatically calibrating a Time-of-Flight (TOF) transceiver system for proximity/motion detection, is provided. Moreover, the system comprises a component that senses a signal (e.g., current or voltage) at an light emitting diode (LED), an attenuator, a signal injector at a sensor and a switching circuit that toggles between a normal mode (e.g., when signal from the sensor is input to the sensor front end) and a calibration mode (e.g., when signal from the attenuator is input to the sensor front end). During the calibration mode, the sensor front end identifies the phase delay error within the signal path, including board and/or package parasitic, and accounts for the phase delay error during proximity/motion detection in the normal mode.
摘要翻译： 提供了一种用于自动校准飞行时间（TOF）收发器系统进行接近/运动检测的系统和方法。 此外，该系统包括感测在发光二极管（LED），衰减器，传感器处的信号注入器和切换电路之间的信号（例如，电流或电压）的组件，其在正常模式（例如， 来自传感器的信号被输入到传感器前端）和校准模式（例如，当来自衰减器的信号被输入到传感器前端时）。 在校准模式期间，传感器前端识别信号路径中的相位延迟误差，包括板和/或封装寄生，并考虑到正常模式下接近/运动检测期间的相位延迟误差。
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公开(公告)号：US20110182519A1
公开(公告)日：2011-07-28
申请号：US13013676
申请日：2011-01-25
申请人： Warren Craddock , David W. Ritter , Philip Golden
发明人： Warren Craddock , David W. Ritter , Philip Golden
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for identifying a position of a moving object, utilizing sensors arranged in any arbitrary configuration, is provided. A pre-processing method is applied to permit implementation on a low power computing device, such as a microcontroller. The preprocessing creates a set of training data corresponding to different gestures, based on different positions of moving objects. Accordingly, utilizing the training data, different types of gestures can be classified by comparing a sensed signal to the set of training gestures.
摘要翻译： 提供了利用以任意构造布置的传感器来识别移动物体的位置的系统和方法。 应用预处理方法来允许在诸如微控制器的低功率计算设备上实现。 基于移动物体的不同位置，预处理创建对应于不同手势的一组训练数据。 因此，利用训练数据，可以通过将感测的信号与训练手势的组进行比较来分类不同类型的手势。
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公开(公告)号：US20110180709A1
公开(公告)日：2011-07-28
申请号：US13013640
申请日：2011-01-25
申请人： Warren Craddock , David W. Ritter , Philip Golden
发明人： Warren Craddock , David W. Ritter , Philip Golden
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for identifying a position of a moving object, utilizing a serial chain of sensors is provided. The serial chain reduces the power needed for the motion detection system, allowing implementation of the motion detection system on a low-power computing device, such as a microcontroller. The serial chain can provide automatic address assignment without dedicated pins. The serial chain can also provide automatic sequencing of access to a shared LED. The serial chain can also provide automatic time correlation of data from multiple sensors in the motion detection system.
摘要翻译： 提供了一种利用传感器串行链来识别移动物体的位置的系统和方法。 串行链降低了运动检测系统所需的功率，允许在诸如微控制器的低功率计算设备上实现运动检测系统。 串行链可以提供无专用引脚的自动地址分配。 串行链还可以提供对共享LED的访问的自动排序。 串行链还可以提供运动检测系统中多个传感器数据的自动时间相关性。
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公开(公告)号：US08091638B2
公开(公告)日：2012-01-10
申请号：US11360215
申请日：2006-02-22
CPC分类号： C09K8/5083 , C09K8/508 , C09K8/5086 , C09K8/512 , C09K8/516 , C09K8/575 , C09K8/5751 , C09K8/68 , E21B21/003
摘要： Methods of controlling fluid loss in a subterranean formation comprising: providing a treatment fluid comprising an aqueous fluid and a fluid loss control additive comprising a water-soluble polymer having hydrophobic or hydrophilic modification; introducing the treatment fluid into an interval of a well bore, the well bore penetrating the subterranean formation; creating one or more perforations in the interval of the well bore, wherein the perforations extend from the well bore and into the subterranean formation; and allowing the treatment fluid to contact a portion of the subterranean formation through the one or more perforations. Methods of a reducing fluid loss from a perforated and/or gravel packed interval of a well bore using a fluid loss control additive comprising a water-soluble polymer having hydrophobic or hydrophilic modification.
摘要翻译： 控制地下地层中的流体损失的方法，包括：提供包含水性流体的处理流体和包含具有疏水或亲水改性的水溶性聚合物的流体损失控制添加剂; 将处理流体引入井眼的间隔中，井眼穿透地层; 在所述井眼的间隔中产生一个或多个穿孔，其中所述穿孔从所述井眼延伸并进入所述地下地层; 并且允许处理流体通过一个或多个穿孔接触地下地层的一部分。 使用包含具有疏水性或亲水性改性的水溶性聚合物的流体损失控制添加剂从孔的穿孔和/或砾石填充间隔减少流体损失的方法。
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10.发明授权Switching regulator with programmable output levels using a single input pin 有权具有可编程输出电平的开关稳压器，使用单个输入引脚公开(公告)号：US07218086B1
公开(公告)日：2007-05-15
申请号：US11381092
申请日：2006-05-01
申请人： David W. Ritter , Bruce Hennig , Ralf J. Muenster
发明人： David W. Ritter , Bruce Hennig , Ralf J. Muenster
IPC分类号： G05F5/00
CPC分类号： H05B33/0845 , H02M3/156 , H02M2001/0025 , H05B33/0815 , H05B33/0842 , Y02B20/347
摘要： A switching regulator provides programming output current control through a single input terminal by modifying the reference voltage in the control loop of the switching regulator. The switching regulator includes a first input terminal receiving a program input voltage indicative of a desired output current, a voltage divider receiving a first reference voltage and providing a second reference voltage at a first node between the first and second resistors and a third reference voltage at a second node between the second and third resistors, and a precision active pulldown circuit coupled to receive the program input voltage and operative to pull down the second reference voltage at the first node in response to the program input voltage. In operation, the third reference voltage is used in the control loop of the switching regulator to control the output current of the switching regulator in response to the program input voltage.
摘要翻译： 开关稳压器通过修改开关稳压器的控制环路中的参考电压，通过单个输入端子提供编程输出电流控制。 开关调节器包括：第一输入端子，接收表示期望输出电流的程序输入电压;分压器，接收第一参考电压，并在第一和第二电阻器之间的第一节点处提供第二参考电压;以及第三参考电压 第二和第三电阻之间的第二节点，以及耦合以接收程序输入电压并且用于响应于程序输入电压而在第一节点下拉第二参考电压的精密有源下拉电路。 在运行中，第三参考电压用于开关稳压器的控制环路，以响应于程序输入电压来控制开关稳压器的输出电流。
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