公开(公告)号：US07259521B1

公开(公告)日：2007-08-21

申请号：US11467738

申请日：2006-08-28

申请人： David W. Ritter

发明人： David W. Ritter

IPC分类号： G09G3/10

CPC分类号： G09G3/3233 ,  G09G3/3291 ,  G09G2310/027 ,  G09G2320/0247

摘要： An AMOLED display system, including an AMOLED display panel receiving a video signal, includes a video driver receiving the video signal and generating a video drive signal indicative of the video signal and referenced to a positive power supply voltage of the display panel, and a current driver coupled to an OLED pixel element receiving the video drive signal and the positive power supply voltage and providing a drive current to the OLED pixel element. The drive current is proportional to a current drive voltage which is indicative of the video signal and independent of the positive power supply voltage. In one embodiment, the video drive signal is indicative of the sum of or the difference between the positive power supply voltage and the video signal and the current drive voltage is indicative of the difference between the positive power supply voltage and the video drive signal.

摘要翻译： 包括接收视频信号的AMOLED显示面板的AMOLED显示系统包括接收视频信号的视频驱动器，并产生指示视频信号并参照显示面板的正电源电压的视频驱动信号，以及电流 驱动器耦合到接收视频驱动信号和正电源电压并向OLED像素元件提供驱动电流的OLED像素元件。 驱动电流与表示视频信号的电流驱动电压成正比，并且与正电源电压无关。 在一个实施例中，视频驱动信号表示正电源电压和视频信号之和的或之间的差值，并且当前驱动电压表示正电源电压和视频驱动信号之间的差。

公开(公告)号：US07222672B2

公开(公告)日：2007-05-29

申请号：US10759408

申请日：2004-01-16

申请人： Matthew E. Blauch ,  David W. Ritter ,  Sanjay Vitthal ,  R. Ashley Donaldson

发明人： Matthew E. Blauch ,  David W. Ritter ,  Sanjay Vitthal ,  R. Ashley Donaldson

IPC分类号： E21B43/04

CPC分类号： C09K8/36 ,  C09K8/035 ,  C09K8/52 ,  C09K2208/26

摘要： Wellbore servicing fluids and methods of using the same to service a wellbore in a subterranean formation are provided. A filter cake in the wellbore is contacted with the gravel packing fluid, which comprises an oil-soluble additive capable of removing the filter cake. The additive undergoes hydrolysis to produce an acid upon contacting water provided from, for example, water in the wellbore servicing fluid, connate water in the subterranean formation, water in the filter cake, water produced by the subterranean formation, water pumped into the wellbore, or combinations thereof. The acid dissolves particulates in the filter cake in situ. In an embodiment in which the wellbore servicing fluid serves as a gravel packing fluid, the fluid also deposits gravel along the face of the subterranean formation, forming a barrier against the migration of sand from the formation and into the wellbore.

摘要翻译： 提供井筒维修流体及其使用方法来维护地下地层中的井筒。 井眼中的滤饼与砾石填充液接触，砾石填充液包含能除去滤饼的油溶性添加剂。 添加剂在与例如井筒维修流体中的水，地层中的原生水，滤饼中的水，地层中产生的水，泵送到井筒中的水接触的水接触时产生酸， 或其组合。 该酸原位溶解滤饼中的颗粒。 在其中井眼维修流体用作砾石填充流体的实施例中，流体还沿着地下地层的表面沉积砾石，形成防止砂从地层迁移到井眼中的障碍。

公开(公告)号：US07065140B1

公开(公告)日：2006-06-20

申请号：US09414307

申请日：1999-10-06

申请人： David W. Ritter ,  Ara Bicakci

发明人： David W. Ritter ,  Ara Bicakci

IPC分类号： H04B1/66

CPC分类号： H04N7/181

摘要： A method and apparatus for receiving video signals from a plurality of video cameras, such as in a video surveillance system. The video cameras are each coupled to provide a video signal to a respective input of a multiplexer. The multiplexer routes a selected one of the video signals to a video decoder. The video decoder receives the selected video signal and is conditioned according to the video signal. This includes synchronizing the video decoder to a frequency and phase of the video signal, controlling a gain level for the video signal and adjusting a dc clamping level for dc restoration of the video signal. Parameters representative of each of these quantities are stored in association with the identity of the corresponding video camera. The video decoder also places each video signal into a format suitable for storage in a storage device and for display by a display device. As the multiplexer is utilized to cycle through the cameras according to a sequence, the parameters for each camera are retrieved and utilized to initialize the video decoder for decoding the video signal received from the corresponding camera. As a result, the amount of time required to condition the video decoder according to the video signal received from each camera is significantly reduced. Accordingly, the present invention allows a surveillance system to cycle through a plurality of cameras in less time than prior systems having a single decoder, but without higher costs associated with prior systems which employ multiple video decoders.

摘要翻译： 一种用于从诸如在视频监控系统中的多个摄像机接收视频信号的方法和装置。 摄像机各自被耦合以向多路复用器的相应输入端提供视频信号。 复用器将选定的一个视频信号路由到视频解码器。 视频解码器接收所选择的视频信号，并根据视频信号进行调节。 这包括将视频解码器与视频信号的频率和相位同步，控制视频信号的增益电平并调整直流钳位电平以直接恢复视频信号。 代表这些数量中的每一个的参数与相应的摄像机的身份相关联地存储。 视频解码器还将每个视频信号放置成适合于存储在存储设备中并由显示设备显示的格式。 由于多路复用器被用于根据序列循环摄像机，因此检索并利用每个摄像机的参数来初始化视频解码器，以对从相应摄像机接收的视频信号进行解码。 结果，根据从每个摄像机接收的视频信号来调节视频解码器所需的时间量显着减少。 因此，本发明允许监视系统在比具有单个解码器的现有系统更少的时间内循环多个摄像机，但是与使用多个视频解码器的现有系统相关联的成本较高。

公开(公告)号：US06556249B1

公开(公告)日：2003-04-29

申请号：US09390733

申请日：1999-09-07

申请人： Gerard E. Taylor ,  Curtis Robinson ,  David W. Ritter ,  Robert Zucker

发明人： Gerard E. Taylor ,  Curtis Robinson ,  David W. Ritter ,  Robert Zucker

IPC分类号： H04N704

CPC分类号： H04N9/83 ,  H04N9/89

摘要： A method and apparatus for compensating for time base or phase errors in video and audio signals that are separately stored or processed. A ring oscillator provides a plurality of clock signals, each having a same frequency and slightly different phase. Each of the clock signals is applied to a multiplexor for allowing an appropriate one of the clock signals to be selected. By selecting appropriate ones of the clock signals in a sequence, the frequency and phase of an output clock signal formed by the multiplexor can be continuously and precisely controlled. Sync pulses separated from a video signal having a varying time base are applied to a video timing generator circuit which generates a series of digital values representative of timing differences between an expected occurrence of a sync pulse and an actual occurrence of the sync pulse. A phase accumulator accumulates the digital values over time for generating appropriate addresses for the multiplexor. Therefore, the frequency and phase of the output clock signal is controlled according to the phase of the sync pulses. Additional logic circuits coupled to the video timing generator generate a series of digital values representing a sinusoid having a stable time base, but which is clocked according to the output clock signal. This sinusoid can be utilized to demodulate a chrominance component signal stored according to the “color under” format. The output clock signal can be utilized for separately processing video and associated audio signals while maintaining time base relationships among the signals.

摘要翻译： 一种用于补偿分别存储或处理的视频和音频信号中的时基或相位误差的方法和装置。 环形振荡器提供多个时钟信号，每个时钟信号具有相同的频率和略微不同的相位。 每个时钟信号被施加到多路复用器，以允许选择适当的一个时钟信号。 通过在序列中选择适当的时钟信号，可以连续且精确地控制由多路复用器形成的输出时钟信号的频率和相位。 与具有变化时基的视频信号分离的同步脉冲被施加到视频定时发生器电路，其产生代表同步脉冲的预期出现和同步脉冲的实际发生之间的定时差的一系列数字值。 相位累加器随着时间积累数字值，以生成多路复用器的适当地址。 因此，根据同步脉冲的相位来控制输出时钟信号的频率和相位。 耦合到视频定时发生器的附加逻辑电路生成一系列数字值，表示具有稳定时基的正弦曲线，其根据输出时钟信号计时。 该正弦曲线可用于解调根据“彩色”格式存储的色度分量信号。 输出时钟信号可用于分别处理视频和相关音频信号，同时保持信号之间的时基关系。

公开(公告)号：US5570743A

公开(公告)日：1996-11-05

申请号：US604697

申请日：1996-02-21

申请人： Paul O. Padgett ,  Stephen F. Crain ,  Wayne A. Handke ,  Jerry L. Logan ,  Calvin L. Stegemoeller ,  Ricky L. Covington ,  David W. Ritter ,  Kevin D. Edgley

发明人： Paul O. Padgett ,  Stephen F. Crain ,  Wayne A. Handke ,  Jerry L. Logan ,  Calvin L. Stegemoeller ,  Ricky L. Covington ,  David W. Ritter ,  Kevin D. Edgley

IPC分类号： B28C9/00 ,  E21B33/13

CPC分类号： B28C9/004

摘要： A continuous multi-component slurrying process at an oil or gas well comprises flowing at least three separate streams of different essential materials directly into a predetermined mixing unit at the oil or gas well, wherein each of the essential materials is required to obtain a predetermined defining characteristic of the slurry.

公开(公告)号：US5522459A

公开(公告)日：1996-06-04

申请号：US74051

申请日：1993-06-03

申请人： Paul O. Padgett ,  Stephen F. Crain ,  Wayne A. Handke ,  Jerry L. Logan ,  Calvin L. Stegemoeller ,  Ricky L. Covington ,  David W. Ritter ,  Kevin D. Edgley

发明人： Paul O. Padgett ,  Stephen F. Crain ,  Wayne A. Handke ,  Jerry L. Logan ,  Calvin L. Stegemoeller ,  Ricky L. Covington ,  David W. Ritter ,  Kevin D. Edgley

IPC分类号： B28C9/00 ,  E21B33/13

CPC分类号： B28C9/004

摘要： A continuous multi-component slurrying process at an oil or gas well comprises flowing at least three separate streams of different essential materials directly into a predetermined mixing unit at the oil or gas well, wherein each of the essential materials is required to obtain a predetermined defining characteristic of the slurry.

摘要翻译： 在油或气井处连续的多组分浆料化方法包括将至少三种不同的必需物质的不同的物流直接流到油井或气井的预定混合单元中，其中每种必需材料需要获得预定的定义 浆料的特征。

公开(公告)号：US08760631B2

公开(公告)日：2014-06-24

申请号：US12979726

申请日：2010-12-28

申请人： David W. Ritter ,  Itaru Hiromi

发明人： David W. Ritter ,  Itaru Hiromi

IPC分类号： G01C3/00

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, regardless of static objects present in the optical field of an active infrared (IR) proximity detector, is provided. Moreover, a modulated light emitting diode (LED) signal is captured and processed through I/Q demodulation. Specifically, the reflections received at an IR sensor are demodulated to generate in-phase (I) and quadrature phase (Q) signals and the derivative of I/Q signals is obtained to isolate motion. For example, an I/Q domain differentiator or a high pass filter is employed to calculate the derivative, which actively remove the effects of all forms of static interference. Further, the phase of the derivative I/Q signals is determined and is utilized to reconstruct the distance at which the motion occurred.

摘要翻译： 提供了用于识别移动物体的位置的系统和方法，而不管存在于主动红外（IR）接近检测器的光场中的静态物体。 此外，通过I / Q解调捕获并处理调制发光二极管（LED）信号。 具体地说，在IR传感器处接收的反射被解调以产生同相（I）和正交相位（Q）信号，并且获得I / Q信号的导数以隔离运动。 例如，使用I / Q域微分器或高通滤波器来计算导数，从而主动消除所有形式的静态干扰的影响。 此外，确定导数I / Q信号的相位，并用于重建运动发生的距离。

公开(公告)号：US08530819B2

公开(公告)日：2013-09-10

申请号：US13013146

申请日：2011-01-25

申请人： David W. Ritter ,  Philip Golden ,  Carl Warren Craddock ,  Kevin Brehmer

发明人： David W. Ritter ,  Philip Golden ,  Carl Warren Craddock ,  Kevin Brehmer

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。

公开(公告)号：US20110249134A1

公开(公告)日：2011-10-13

申请号：US12938481

申请日：2010-11-03

申请人： Aaron M. Dennison-Gibby ,  David W. Ritter ,  Philip Golden ,  Carl Warren Craddock ,  I-Shan Sun

发明人： Aaron M. Dennison-Gibby ,  David W. Ritter ,  Philip Golden ,  Carl Warren Craddock ,  I-Shan Sun

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。

公开(公告)号：US20110181861A1

公开(公告)日：2011-07-28

申请号：US12979726

申请日：2010-12-28

申请人： David W. Ritter ,  Itaru Hiromi

发明人： David W. Ritter ,  Itaru Hiromi

IPC分类号： G01C3/00

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, regardless of static objects present in the optical field of an active infrared (IR) proximity detector, is provided. Moreover, a modulated light emitting diode (LED) signal is captured and processed through I/Q demodulation. Specifically, the reflections received at an IR sensor are demodulated to generate in-phase (I) and quadrature phase (Q) signals and the derivative of I/Q signals is obtained to isolate motion. For example, an I/Q domain differentiator or a high pass filter is employed to calculate the derivative, which actively remove the effects of all forms of static interference. Further, the phase of the derivative I/Q signals is determined and is utilized to reconstruct the distance at which the motion occurred.

摘要翻译： 提供了用于识别移动物体的位置的系统和方法，而不管存在于主动红外（IR）接近检测器的光场中的静态物体。 此外，通过I / Q解调捕获并处理调制发光二极管（LED）信号。 具体地说，在IR传感器处接收的反射被解调以产生同相（I）和正交相位（Q）信号，并且获得I / Q信号的导数以隔离运动。 例如，使用I / Q域微分器或高通滤波器来计算导数，从而主动消除所有形式的静态干扰的影响。 此外，确定导数I / Q信号的相位，并用于重建运动发生的距离。