公开(公告)号：US10302434B2

公开(公告)日：2019-05-28

申请号：US13682684

申请日：2012-11-20

申请人： CSR Technology Inc.

发明人： Mahesh Chowdhary ,  Manish Sharma ,  Arun Kumar ,  Sankalp Dayal ,  Mahaveer Jain

IPC分类号： G01C21/12 ,  G06F15/00 ,  G01C21/16 ,  G01C21/20

摘要： The present invention relates generally to position determination, and more particularly to methods and apparatuses to determine the walking direction (heading of a user) using MEMS inertial sensors commonly found in mobile devices such as cellphones. According to some aspects, the invention includes a methodology to allow the walking angle to be determined dynamically. In embodiments, the methodology includes pattern matching accelerometer measurement data to a reference acceleration pattern.

公开(公告)号：US09100090B2

公开(公告)日：2015-08-04

申请号：US14137561

申请日：2013-12-20

申请人： CSR TECHNOLOGY INC.

发明人： Yi Zhang ,  Rogerio Guedes Alves

IPC分类号： H04B3/23

CPC分类号： G10L21/0208 ,  G10L15/20 ,  G10L21/0205 ,  G10L21/0232 ,  G10L2021/02082 ,  H04B3/23 ,  H04M1/6041 ,  H04M9/08 ,  H04M9/082

摘要： Embodiments are directed towards providing acoustic echo cancellation in a closely-coupled microphone/speaker system. A speaker may produce an audible signal from a reference signal, which may be captured with a microphone. Full band cancellation (FBC) may modify the captured signal to suppress an echo of the reference signal caused by a direct acoustic path between the microphone and speaker. FBC may include a fixed filter and an adaptive filter. The fixed filter may modify the captured signal based on the reference signal. The adaptive filter may automatically adapt based on the captured signal and the reference signal. If a comparison of a performance of the adaptive filter and the fixed filter is above a threshold, then the fixed filter may be updated based on the adaptive filter. Subband acoustic echo cancellation may generate an output signal that suppresses residual echoes of the reference signal based on the modified signal.

摘要翻译： 实施例旨在在紧密耦合的麦克风/扬声器系统中提供声学回声消除。 扬声器可以从可以用麦克风捕获的参考信号产生可听信号。 全频带消除（FBC）可以修改捕获的信号以抑制由麦克风和扬声器之间的直接声路引起的参考信号的回波。 FBC可以包括固定滤波器和自适应滤波器。 固定滤波器可以基于参考信号修改捕获的信号。 自适应滤波器可以基于捕获的信号和参考信号自动适应。 如果自适应滤波器和固定滤波器的性能的比较高于阈值，则可以基于自适应滤波器来更新固定滤波器。 子带声回波消除可以产生基于修改的信号抑制参考信号的残留回波的输出信号。

公开(公告)号：US08810450B2

公开(公告)日：2014-08-19

申请号：US13435687

申请日：2012-03-30

申请人： Gengsheng Zhang ,  Quingwen Zhang ,  Paul Underbrink

发明人： Gengsheng Zhang ,  Quingwen Zhang ,  Paul Underbrink

IPC分类号： G01S19/37 ,  G01S19/03 ,  G01S19/05

CPC分类号： G01S19/05 ,  G01S19/37

摘要： Satellite positioning system (SATPS) receiver that has a plurality of modes and channels, where a timeline module configures the channels based on the mode of operation of the SATPS receiver and reconfigures the channels if the mode of operation of the SATPS changes.

摘要翻译： 具有多个模式和频道的卫星定位系统（SATPS）接收机，其中时间线模块基于SATPS接收机的操作模式配置信道，并且如果SATPS的操作模式改变则重新配置信道。

公开(公告)号：US08610442B2

公开(公告)日：2013-12-17

申请号：US12419089

申请日：2009-04-06

申请人： Jan-Michael Stevenson ,  Timothy M. Magnusen

发明人： Jan-Michael Stevenson ,  Timothy M. Magnusen

IPC分类号： G01R27/26 ,  H03B5/00

CPC分类号： G01R27/2605

摘要： A method for detecting capacitor variation in a device comprises operating an oscillator in the device, the oscillator being an Inductive-Capacitive (LC) oscillator and including an inductor of known value and a capacitor under test, comparing an output of the oscillator to a reference output, and evaluating variation for a plurality of capacitors in the device based on the comparing.

公开(公告)号：US08593572B2

公开(公告)日：2013-11-26

申请号：US12247915

申请日：2008-10-08

申请人： Uri Nix ,  Liron Ain-Kedem

发明人： Uri Nix ,  Liron Ain-Kedem

IPC分类号： H04N11/20

CPC分类号： H04N5/144

摘要： Systems and methods directed to determining motion in a video signal are provided. A plurality of pixels of a plurality of adjacent field lines of alternating parity of the video signal are evaluated to generate a plurality of differential values. A sign of each differential value is determined, and when each differential value has the same sign, at least one differential value can be compared with a threshold value. Responsive to the comparison of at least one differential value with a threshold value, a motion coefficient indicative of a magnitude of motion associated with one of the plurality of pixels can be generated.

摘要翻译： 提供了用于确定视频信号中的运动的系统和方法。 评估视频信号的交替奇偶校验的多个相邻场线的多个像素以产生多个差分值。 确定每个差分值的符号，并且当每个差分值具有相同符号时，可以将至少一个差分值与阈值进行比较。 响应于至少一个差分值与阈值的比较，可以生成指示与多个像素之一相关联的运动幅度的运动系数。

公开(公告)号：US08570433B1

公开(公告)日：2013-10-29

申请号：US13217003

申请日：2011-08-24

申请人： Paul R. Goldberg

发明人： Paul R. Goldberg

IPC分类号： H04N5/222

CPC分类号： G06T5/005 ,  G06T2207/30216 ,  H04N5/217 ,  H04N5/23229 ,  H04N5/2354 ,  H04N9/045 ,  H04N9/735

摘要： Techniques for reducing coloration artifacts visible in digital images acquired under flash lighting conditions are provided. The coloration artifact problem is addressed by capturing two images of the scene, a first image illuminated by a limited spectral bandwidth flash light source, and a second image illuminated by broad spectral bandwidth flash light source. Pixels of the second image are replaced with selected counterpart pixels from the first image that do not contain the coloration artifact.

摘要翻译： 提供了用于减少在闪光照明条件下获取的数字图像中可见的着色伪像的技术。 通过捕获场景的两个图像，由有限光谱带宽闪光光源照射的第一图像和由宽光谱带宽闪光光源照射的第二图像来解决着色伪影问题。 第二个图像的像素被从不包含着色伪像的第一个图像中的选定的对应像素替换。

公开(公告)号：US08542775B2

公开(公告)日：2013-09-24

申请号：US12945584

申请日：2010-11-12

申请人： Stefan Volnhals

发明人： Stefan Volnhals

IPC分类号： H04B1/06

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

摘要： A radio system comprises a front-end receiver for receiving a 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：US20130235250A1

公开(公告)日：2013-09-12

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

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：US08514982B2

公开(公告)日：2013-08-20

申请号：US12333846

申请日：2008-12-12

申请人： Noshir Dubash ,  Siva Bonasu ,  Peter Naji ,  Douglas W. Schucker

发明人： Noshir Dubash ,  Siva Bonasu ,  Peter Naji ,  Douglas W. Schucker

IPC分类号： H04L27/06

CPC分类号： H04B1/001 ,  H04B1/0014

摘要： Systems and methods for mitigating multipath signals in a receiver are provided. In this regard, a representative system, among others, includes a radio frequency (RF) front-end and at least one analog-to-digital converter (ADC). The RF front-end receives FM signals and down-converts the received frequency signals to intermediate frequency (IF) signals. The analog-to-digital converter (ADC) receives the intermediate frequency signals and digitizes multiple FM channels around a desired FM channel associated with the down-converted signals. The system further includes multiple sets of digital processing components that are configured to simultaneously receive and process the digitized multiple channels. The multiple sets of digital processing components include at least two parallel channel selection and demodulation paths in which the respective digitized multiple channels are processed therethrough.

摘要翻译： 提供了用于减轻接收机中的多径信号的系统和方法。 在这方面，代表性系统包括射频（RF）前端和至少一个模拟 - 数字转换器（ADC）。 RF前端接收FM信号并将接收的频率信号下变频为中频（IF）信号。 模数转换器（ADC）接收中频信号，并围绕与下变频信号相关联的期望的FM信道数字化多个FM信道。 该系统还包括多组数字处理组件，其被配置为同时接收和处理数字化的多个通道。 多组数字处理组件包括至少两个并行通道选择和解调路径，其中相应的数字化多个通道被处理。

公开(公告)号：US08503815B2

公开(公告)日：2013-08-06

申请号：US11752817

申请日：2007-05-23

申请人： Itsik Dvir

发明人： Itsik Dvir

IPC分类号： G06K9/40

CPC分类号： G06T5/009

摘要： The described methods and corresponding apparatus are for use in highlight recovery in a set of image data. The image data is inverted, treated by a digital lighting process, the subsequently inverted again. This allows the set of data image to be treated for dynamic range compression of detail in both the dark regions and the light regions by the same algorithm. In other words, the process applied to the dark regions can be performed by a correction algorithm and the process applied to the light regions performed by the same algorithm, but with the image data negated before and after the correction algorithm is applied.

摘要翻译： 所描述的方法和相应的装置用于一组图像数据中的高光恢复。 图像数据被反转，通过数字照明处理，随后再次反转。 这允许通过相同的算法来处理在暗区域和光区域中的细节的动态范围压缩的数据图像集合。 换句话说，施加到暗区域的处理可以通过校正算法执行，并且应用于通过相同算法执行的光区域的处理，但是在应用校正算法之前和之后使图像数据被否定。