公开(公告)号：US08786784B2

公开(公告)日：2014-07-22

申请号：US13460508

申请日：2012-04-30

申请人： Timothy M. Magnusen

发明人： Timothy M. Magnusen

IPC分类号： H04N5/52

CPC分类号： H03G1/0088 ,  H03G3/001

摘要： A digital level control circuit, such as an Automatic Gain Control, includes a plurality of digitally selectable signal levels with transitions between levels gradually varied to avoid signal output level discontinuities. An up/down counter may be used to incrementally stepwise transition an output signal between the digitally selectable output levels. Stepwise application of a control signal to the appropriate switching elements (e.g., FETs) forming an attenuator circuit may be implemented to moderate a switching time of the switching elements to provide a more gradual transition between element operating states. A deglitch circuit may be employed to latch the switching elements to achieve the desired state at the end of a desired switching transition period.

摘要翻译： 诸如自动增益控制的数字电平控制电路包括多个数字可选择的信号电平，其中电平之间的转变逐渐变化以避免信号输出电平不连续性。 可以使用向上/向下计数器来递增地逐步地转换数字可选输出电平之间的输出信号。 可以实现将控制信号逐步施加到形成衰减器电路的合适的开关元件（例如，FET），以调节开关元件的开关时间，以在元件工作状态之间提供更渐进的过渡。 可以使用去电阻电路来锁存开关元件，以在期望的开关转换周期结束时实现期望的状态。

公开(公告)号：US20140105412A1

公开(公告)日：2014-04-17

申请号：US14109692

申请日：2013-12-17

申请人： CSR TECHNOLOGY INC.

发明人： Rogerio Guedes Alves ,  Walter Andrés Zuluaga

IPC分类号： H04R3/00

CPC分类号： H04R3/002 ,  G10K11/178 ,  G10K2210/3033 ,  G10K2210/3035 ,  G10K2210/3055 ,  G10K2210/504 ,  H04R1/1083

摘要： Embodiments are directed towards enabling headphones to perform active noise cancellation for a particular user. Each separate user may enable individualized noise canceling headphones for one or more noise environments. When the user is wearing the headphones in a quiet environment, a user may employ a computer to initiate determination of a plant model of each ear cup specific to the user. When the user is wearing the headphones in a target noise environment, the user may utilize the computer to initiate determination of operating parameters of a controller for each ear cup of the headphones. The computer may provide the operating parameters of each controller to the headphones. And the operation of each controller may be updated based on the determined operating parameters. The updated headphones may be utilized by the user to provide active noise cancellation.

摘要翻译： 实施例旨在使得耳机能够为特定用户执行主动噪声消除。 每个单独的用户可以为一个或多个噪声环境启用个性化的噪声消除耳机。 当用户在安静的环境中佩戴耳机时，用户可以使用计算机来启动对用户特定的每个耳罩的植物模型的确定。 当用户在目标噪声环境中佩戴耳机时，用户可以使用计算机来开始确定耳机的每个耳罩的控制器的操作参数。 计算机可以向耳机提供每个控制器的操作参数。 并且可以基于确定的操作参数来更新每个控制器的操作。 更新的耳机可以由用户使用来提供主动噪声消除。

公开(公告)号：US08666162B1

公开(公告)日：2014-03-04

申请号：US13330553

申请日：2011-12-19

申请人： David Vakrat

发明人： David Vakrat

IPC分类号： G06K9/00

CPC分类号： G06T3/4015

摘要： A system, method, and computer program product for improving digital images and video by reducing or eliminating artifacts created by sensor binning, i.e. channel displacement of downscaled image pixels. Red and blue pixels are shifted to corresponding ideal pixel locations using for example bi-linear interpolation for each color. Green pixels are shifted to corresponding ideal pixel locations using one-dimensional cubic interpolation along a diagonal direction in which the green pixels are aligned. Pixel values are replaced by weighted pixel value averages of groups of pixels, preferably four, and the weights used vary inversely with shifted distances. Cubic interpolation results may be separately weighted pairwise among pixels with a weighting parameter favoring pixels near the ideal pixel location. The embodiments noticeably improve image and video quality, particularly by treatment of jagged edges of diagonal image features without compromising image sharpness or creating false colors along edges.

摘要翻译： 一种用于通过减少或消除由传感器合并产生的伪影即减小的图像像素的通道位移来改善数字图像和视频的系统，方法和计算机程序产品。 使用例如每种颜色的双线性插值将红色和蓝色像素移动到相应的理想像素位置。 绿色像素沿着沿着绿色像素排列的对角线方向的一维三次插值移位到相应的理想像素位置。 像素值由像素组的加权像素值平均值代替，优选地为四个，并且所使用的权重与偏移的距离成反比。 可以在具有有利于理想像素位置附近的像素的加权参数的像素之间成对地单独加权立方插值结果。 这些实施例明显地改善图像和视频质量，特别是通过处理对角图像特征的锯齿状边缘而不损害图像清晰度或沿边缘产生伪色。

公开(公告)号：US08629806B2

公开(公告)日：2014-01-14

申请号：US13734255

申请日：2013-01-04

申请人： CSR Technology Inc.

发明人： Nam Dieu Banh

IPC分类号： G01S19/22 ,  G01S19/30 ,  G01S19/37

CPC分类号： G01S19/24 ,  G01S19/22 ,  G01S19/30 ,  H04B1/709

摘要： A GPS receiver for tracking a GPS signal. The receiver generates a mixed GPS signal by mixing the GPS signal with an oscillator signal, generates a first correlation signal by correlating the mixed GPS signal with a reference signal, and generates a filtered GPS signal from the GPS signal. The receiver also generates a filtered reference signal from the reference signal, generates a second correlation signal by correlating the filtered GPS signal with the filtered reference signal, and a generates a combined correlation signal by combining the first correlation signal with the second correlation signal. The receiver tracks the GPS signal by adjusting the phase of the oscillator signal based on the combined correlation signal.

摘要翻译： GPS接收机，用于跟踪GPS信号。 接收机通过将GPS信号与振荡器信号混合产生混合的GPS信号，通过将混合GPS信号与参考信号相关来产生第一相关信号，并从GPS信号产生滤波后的GPS信号。 接收机还从参考信号产生滤波后的参考信号，通过将滤波后的GPS信号与滤波后的参考信号进行相关，产生第二相关信号，并通过组合第一相关信号和第二相关信号产生组合的相关信号。 接收机通过基于组合的相关信号调整振荡器信号的相位来跟踪GPS信号。

公开(公告)号：US08619182B2

公开(公告)日：2013-12-31

申请号：US13413584

申请日：2012-03-06

申请人： Evgene Fainstain

发明人： Evgene Fainstain

IPC分类号： H04N5/232 ,  H04N5/225

CPC分类号： H04N5/23212 ,  G03B11/00 ,  G03B13/36

摘要： Embodiments are directed towards using a color filtration system to generate multiple color images of a same single image that is displayed on a photo sensor plane to determine a lens adjustment position for a defined region of interest usable to automatically focus at least the defined region of interest using the single image. In one embodiment, the color filtration system employs a multiple color aperture filter and two single element lenses to generate multiple color images when an object within the single image is out of focus. In another embodiment, a metal dielectric interference filter is mounted directly in front of the photo sensor, to generate the multiple color images.

摘要翻译： 实施例涉及使用彩色滤光系统来生成在光传感器平面上显示的相同单一图像的多个彩色图像，以确定用于所定义的感兴趣区域的透镜调整位置，以便自动聚焦至少所定义的感兴趣区域 使用单个图像。 在一个实施例中，当单个图像内的对象失焦时，彩色滤光系统采用多色孔径滤光器和两个单个元件透镜来产生多个彩色图像。 在另一个实施例中，金属介电干涉滤光器直接安装在光传感器的前面，以产生多色图像。

公开(公告)号：US20130336427A1

公开(公告)日：2013-12-19

申请号：US13970078

申请日：2013-08-19

申请人： CSR Technology Inc.

发明人： Stefan Volnhals

IPC分类号： H04B1/00

CPC分类号： H04B1/0003 ,  H04B1/0007 ,  H04B1/006 ,  H04B1/18

摘要： A radio system comprises a front-end receiver for receiving an RF signal and converting the RF signal into a digital payload signal. The system further comprises a base-band processor for processing the digital payload signal, and a serial data interface over which the front-end communicates the digital payload signal and meta data to the base-band processor. The meta data may comprise information indicating whether a corresponding digital payload signal communicated over the serial data interface is valid and additional information of the front-end status, e.g. gain or state of tuning.

摘要翻译： 无线电系统包括用于接收RF信号并将RF信号转换成数字有效载荷信号的前端接收机。 该系统还包括用于处理数字有效载荷信号的基带处理器和串行数据接口，前端将数字有效载荷信号和元数据传送到基带处理器。 元数据可以包括指示通过串行数据接口传送的对应的数字有效载荷信号是否有效的信息，以及前端状态的附加信息，例如， 增益或调谐状态。

公开(公告)号：US08604872B2

公开(公告)日：2013-12-10

申请号：US13308145

申请日：2011-11-30

申请人： Ayaskant Shrivastava

发明人： Ayaskant Shrivastava

IPC分类号： H03F1/34

CPC分类号： H03F1/32 ,  H03F3/195 ,  H03F3/45098 ,  H03F3/45179 ,  H03F2200/294 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2203/45364 ,  H03F2203/45512 ,  H03F2203/45702

摘要： Systems and methods which implement a transconductor replica feedback (TRF) block in a transconductor circuit are shown. In accordance with embodiments, the TRF block comprises a feedback transistor disposed as a replica of a corresponding transconductance transistor of the transconductor circuit. The TRF block provides enhanced looking-in degeneration impedance for the transconductor circuit, thereby allowing for higher linearity and lower power at the same time. TRF transconductors of embodiments can be implemented in, or otherwise applied to, various different circuits such as LNAs, filters, etc.

摘要翻译： 示出了在跨导电路中实现跨导复制反馈（TRF）块的系统和方法。 根据实施例，TRF块包括作为跨导电路的相应跨导晶体管的副本设置的反馈晶体管。 TRF块为跨导体电路提供了增强的外观退化阻抗，从而允许同时具有更高的线性度和更低的功率。 实施例的TRF跨导体可以实现在各种不同的电路中，例如LNA，滤波器等中，或以其他方式应用于各种不同的电路。

公开(公告)号：US08593541B2

公开(公告)日：2013-11-26

申请号：US13410256

申请日：2012-03-01

申请人： Victor Pinto ,  Artemy Baxansky ,  Meir Tzur

发明人： Victor Pinto ,  Artemy Baxansky ,  Meir Tzur

IPC分类号： H04N9/73 ,  H04N5/217 ,  G06K9/40

CPC分类号： H04N9/735 ,  H04N5/235 ,  H04N5/2357

摘要： Methods for estimating illumination parameters under flickering lighting conditions are disclosed. Illumination parameters, such as phase and contrast, of a intensity-varying light source may be estimated by capturing a sequence of video images, either prior to or after a desired still image to be processed. The relative average light intensities of the adjacently-captured images are calculated and used to estimate the illumination parameters applicable to the desired still image. The estimated illumination parameters may be used to calculate the point spread function of a still image for image de-blurring processing. The estimated illumination parameters may also be used to synchronize the exposure timing of a still image to the time when there is the most light, as well as for use in motion estimation during view/video modes.

摘要翻译： 公开了在闪烁照明条件下估计照明参数的方法。 可以通过在要处理的所需静止图像之前或之后捕获视频图像序列来估计强度变化光源的照明参数，例如相位和对比度。 计算相邻拍摄图像的相对平均光强度并用于估计适用于所需静止图像的照明参数。 可以使用估计的照明参数来计算用于图像去模糊处理的静止图像的点扩散函数。 估计的照明参数也可以用于使静止图像的曝光定时与最亮的时间同步，以及用于在视图/视频模式期间的运动估计。

公开(公告)号：US08593345B2

公开(公告)日：2013-11-26

申请号：US13400390

申请日：2012-02-20

申请人： Paul A. Underbrink ,  Henry D. Falk ,  Steven A. Gronemeyer ,  Chittharanjan Dassannacharya ,  Charles P. Norman ,  Nicolas Vantalon ,  Vojislav Protic

发明人： Paul A. Underbrink ,  Henry D. Falk ,  Steven A. Gronemeyer ,  Chittharanjan Dassannacharya ,  Charles P. Norman ,  Nicolas Vantalon ,  Vojislav Protic

IPC分类号： G01S19/32

CPC分类号： G01S19/13 ,  G01S19/24 ,  G01S19/34 ,  G01S19/37 ,  H04B1/707 ,  H04B2201/70715

摘要： A signal processing system for processing satellite positioning signals is described. The system comprises at least one processor and a signal processor operating under a number of operational modes. The signal processor includes at least one of a signal processing subsystem, a fast Fourier transform (FFT) subsystem, and a memory subsystem that are each dynamically and independently configurable in response to the operational modes. Further, the system includes a controller that couples to control transfer of data among the signal processing subsystem and the FFT subsystem via the memory subsystem. Configurability of the memory subsystem includes configuring the memory subsystem into regions according to the operational modes where each region is accessible in one of a number of manners according to the operational modes.

摘要翻译： 描述了一种用于处理卫星定位信号的信号处理系统。 该系统包括在多种操作模式下操作的至少一个处理器和信号处理器。 信号处理器包括信号处理子系统，快速傅立叶变换（FFT）子系统和存储器子系统中的至少一个，每个动态和独立地可以响应于操作模式配置。 此外，该系统包括控制器，其经由存储器子系统耦合以控制信号处理子系统和FFT子系统之间的数据传送。 存储器子系统的可配置性包括根据操作模式将存储器子系统配置到区域中，根据操作模式，可以以多种方式之一访问每个区域。

公开(公告)号：US08582001B2

公开(公告)日：2013-11-12

申请号：US12756035

申请日：2010-04-07

申请人： Meir Tzur ,  Victor Pinto

发明人： Meir Tzur ,  Victor Pinto

IPC分类号： H04N5/235 ,  G03B7/00

CPC分类号： H04N5/235 ,  H04N5/3355

摘要： A device and methods are provided for producing a high dynamic range (HDR) image of a scene are disclosed and claimed. In one embodiment, method includes setting an exposure period of an image sensor of the digital camera and capturing image data based on the exposure period. The method may further include checking the image data to determine whether the number of saturated pixels exceeds a saturation threshold and checking the image data to determine whether the number of cutoff pixels exceeds a cutoff threshold. The method may further include generating a high dynamic range image based on image data captured by the digital camera, wherein the high dynamic range image is generated based on a minimum number of images to capture a full dynamic range of the scene.

摘要翻译： 提供用于产生场景的高动态范围（HDR）图像的装置和方法被公开和要求保护。 在一个实施例中，方法包括设置数字照相机的图像传感器的曝光周期并且基于曝光周期捕获图像数据。 该方法还可以包括检查图像数据以确定饱和像素的数量是否超过饱和阈值，并且检查图像数据以确定截止像素的数量是否超过截止阈值。 该方法可以进一步包括基于由数字照相机拍摄的图像数据生成高动态范围图像，其中基于最小数量的图像生成高动态范围图像以捕获场景的完整动态范围。