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公开(公告)号：US09515646B2
公开(公告)日：2016-12-06
申请号：US14017037
申请日：2013-09-03
Applicant: CONEXANT SYSTEMS, INC.
Inventor： Christian Larsen , Lorenzo Crespi
CPC classification number: H03K17/161 , H01L27/0281 , H03F1/305 , H03F3/181 , H03F2200/03 , H03F2200/249 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03G3/348 , H03K17/6871 , H03K2217/0018
Abstract: A grounding switch is described which operates properly even in the presence of negative voltages on a signal line. The grounding switch uses isolated field effect transistors that have their substrates tied to different voltages. The isolated field effect transistor has a gate voltage and substrate voltage which can be pulled down to a negative voltage when the signal line has a negative voltage allowing the switch to remain open even with a negative voltage.
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公开(公告)号：US09485568B2
公开(公告)日：2016-11-01
申请号：US13693569
申请日：2012-12-04
Applicant: CONEXANT SYSTEMS, INC.
Inventor： Christian Larsen , Lorenzo Crespi , Mouna Elkhatib , Mary Xiao-Hua Lu , James Bunde Villadsen Skov
CPC classification number: H04R3/00 , H03F1/305 , H03F3/187 , H03F2200/03 , H03F2200/249 , H03F2200/414 , H03G3/348
Abstract: A driver controller comprising a state machine for controlling transitions between a plurality of states. An output switch for providing a low impedance path to ground during transition periods. An output stage for decoupling output signal from driver amplifier during the transition periods.
Abstract translation: 一种驱动器控制器，包括用于控制多个状态之间的转换的状态机。 输出开关，用于在过渡期间提供低阻抗地线路径。 用于在过渡期间将输出信号与驱动放大器去耦的输出级。
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公开(公告)号：US09407992B2
公开(公告)日：2016-08-02
申请号：US14105765
申请日：2013-12-13
Applicant: Conexant Systems, Inc.
Inventor： Chris X. Gao , Govind Kannan , Youhong Lu , Trausti Thormundsson , Vilhjalmur S. Thorvaldsson
CPC classification number: H04R3/02
Abstract: A method for continuously estimating reverberation decay comprising receiving a sequence of audio data samples. Determining whether a plateau is present in the sequence of audio data samples. Generating one or more reverberation parameters from the sequence of audio data samples if it is determined that the plateau is present.
Abstract translation: 一种用于连续估计混响衰减的方法，包括接收音频数据样本序列。 确定音频数据样本序列中是否存在平台。 如果确定高原存在，则从音频数据样本序列生成一个或多个混响参数。
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公开(公告)号：US08965135B2
公开(公告)日：2015-02-24
申请号：US12051475
申请日：2008-03-19
Applicant: Carl Alelyunas
Inventor： Carl Alelyunas
CPC classification number: H04N7/0115
Abstract: A system for cadence break detection is provided. The system includes a field system receiving a plurality of fields of image data. A threshold system generates a cadence break signal if a difference in two fields exceeds a predetermined threshold. A sequence system generates the cadence break signal if a sequence of differences between the plurality of fields does not match a predetermined sequence.
Abstract translation: 提供了一种节奏突破检测系统。 该系统包括接收多个图像数据场的场系统。 如果两个场中的差超过预定阈值，则门限系统产生节奏断点信号。 如果多个字段之间的差异序列与预定序列不匹配，则序列系统产生节奏断点信号。
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公开(公告)号：US08849315B2
公开(公告)日：2014-09-30
申请号：US11954579
申请日：2007-12-12
Applicant: Menzo Wentink
Inventor： Menzo Wentink
CPC classification number: H04W52/0216 , H04W48/14 , H04W60/02 , H04W68/02 , H04W76/20 , H04W84/12 , Y02D70/142 , Y02D70/146
Abstract: Systems and methods for retrieving data from an access point within a wireless communications system are described. At least one embodiment includes a method for retrieving buffered data in a wireless communication system. In accordance with some embodiments, the method comprises transmitting a paging request to a plurality of access points while in a low power mode, receiving a Paging Indication element or a TIM Response element while remaining in low power mode, and exiting low power mode if buffered data is present and retrieving the buffered data. The Paging Indication element or TIM Response element indicates whether buffered data is present.
Abstract translation: 描述了用于从无线通信系统内的接入点检索数据的系统和方法。 至少一个实施例包括用于在无线通信系统中检索缓冲数据的方法。 根据一些实施例，该方法包括在低功率模式下向多个接入点发送寻呼请求，在保持低功率模式的同时接收寻呼指示元件或TIM响应元件，并且如果缓冲则退出低功率模式 存在数据并检索缓冲数据。 寻呼指示元素或TIM响应元素指示是否存在缓冲数据。
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Patent Agency Ranking
公开(公告)号：US20140249812A1
公开(公告)日：2014-09-04
申请号：US14197149
申请日：2014-03-04
Applicant: Conexant Systems, Inc.
Inventor： Sahar E. Bou-Ghazale , Trausti Thormundsson , Willie B. Wu
CPC classification number: G10L25/84
Abstract: A system for audio processing comprising an initial background statistical model system configured to generate an initial background statistical model using a predetermined sample size of audio data. A parameter computation system configured to generate parametric data for the audio data including cepstral and energy parameters. A background statistics computation system configured to generate preliminary background statistics for determining whether speech has been detected. A first speech detection system configured to determine whether speech was present in the initial sample of audio data. An adaptive background statistical model system configured to provide an adaptive background statistical model for use in continuous processing of audio data for speech detection. A parameter computation system configured to calculate cepstral parameters, energy parameters and other suitable parameters for speech detection. A speech/non-speech classification system configured to classify individual frames as speech frames or non-speech frames, based on the computed parameters and the adaptive background statistical model data. A background statistics update system configured to update the background statistical model based on detected speech and non-speech frames. A second speech detection system configured to perform speech detection processing and to generate a suitable indicator for use in processing audio data that is determined to include speech signals.
Abstract translation: 一种用于音频处理的系统，包括初始背景统计模型系统，其被配置为使用音频数据的预定样本大小来生成初始背景统计模型。 参数计算系统，被配置为产生包括倒谱和能量参数的音频数据的参数数据。 背景统计计算系统，被配置为生成用于确定是否已经检测到语音的初步背景统计。 第一语音检测系统，被配置为确定音频数据的初始采样中是否存在语音。 一种自适应背景统计模型系统，被配置为提供用于语音检测的音频数据的连续处理中的自适应背景统计模型。 一种参数计算系统，被配置为计算语音检测的倒谱参数，能量参数和其他合适的参数。 一种语音/非语音分类系统，被配置为基于所计算的参数和自适应背景统计模型数据将各个帧分类为语音帧或非语音帧。 背景统计更新系统，被配置为基于检测到的语音和非语音帧来更新背景统计模型。 第二语音检测系统，被配置为执行语音检测处理并且生成用于处理被确定为包括语音信号的音频数据的合适的指示符。
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公开(公告)号：US20140247091A1
公开(公告)日：2014-09-04
申请号：US14197138
申请日：2014-03-04
Applicant: Conexant Systems, Inc.
Inventor： Brian W. Friend , Lorenzo Crespi , Kyehyung Lee
IPC: H03F3/45
CPC classification number: H03F1/0211 , H03F3/187 , H03F3/45179 , H03F3/45192 , H03F3/45475 , H03F2203/45112 , H03F2203/45494 , H03F2203/45528 , H03G1/0088
Abstract: A circuit comprising a peak detector configured to receive a positive voltage input, a negative voltage input and a reference current source input and to output a peak signal data value. A fast attack current source control coupled to the peak detector and configured to generate a current source control signal as a function of the peak signal data value. A slow decay control coupled to the fast attack current source control and configured to reduce the current source control signal based on a predetermined or user-selected decay rate. A variable current source coupled to the fast attack current source control and configured to generate a variable current as a function of the current source control signal. Amplifier circuitry coupled to the variable current source, the amplifier circuitry configured to receive the variable current.
Abstract translation: 一种电路，包括被配置为接收正电压输入的峰值检测器，负电压输入端和参考电流源输入端，并输出峰值信号数据值。 快速攻击电流源控制，耦合到峰值检测器并且被配置为产生作为峰值信号数据值的函数的电流源控制信号。 耦合到快速攻击电流源控制并被配置为基于预定或用户选择的衰减速率来减小电流源控制信号的慢衰减控制。 耦合到快速攻击电流源控制并被配置为根据电流源控制信号产生可变电流的可变电流源。 放大器电路耦合到可变电流源，放大器电路被配置为接收可变电流。
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8.发明授权Low area all digital delay-locked loop insensitive to reference clock duty cycle and jitter 有权低区域全数字延迟锁定环对参考时钟占空比和抖动不敏感公开(公告)号：US08779816B2
公开(公告)日：2014-07-15
申请号：US13919973
申请日：2013-06-17
Applicant: Conexant Systems, Inc.
Inventor： Santosh Patel , Pradeep Anantula
CPC classification number: H03L7/08 , H03L7/0805 , H03L7/0814 , H03L7/0816 , H03L7/093
Abstract: A circuit comprising 1) a master delay-locked loop comprising a phase detector for receiving a reference clock and generating an output, control logic for receiving the output from the phase detector and a delta delay input and generating a control output, a clock splitter for receiving the reference clock and generating differential clock output, a delay line for receiving the differential reference clock from the clock splitter and generating n phases of differential reference clock at output, a multiplexer for receiving the output from the delay line and the control logic output and generating a clock output, wherein the phase detector is for receiving the reference clock, and 2) a slave delay-locked loop for receiving the control logic output and a strobe input and generating a delay locked loop output.
Abstract translation: 一种电路，包括1）主延迟锁定环路，包括用于接收参考时钟并产生输出的相位检测器，用于接收来自相位检测器的输出的控制逻辑和增量延迟输入并产生控制输出的时钟分配器 接收参考时钟并产生差分时钟输出，延迟线，用于从时钟分离器接收差分参考时钟并在输出时产生差分参考时钟的n相;多路复用器，用于接收来自延迟线的输出和控制逻辑输出; 产生时钟输出，其中相位检测器用于接收参考时钟，以及2）用于接收控制逻辑输出和选通输入并产生延迟锁定环输出的从延迟锁定环路。
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公开(公告)号：US08682002B2
公开(公告)日：2014-03-25
申请号：US12828565
申请日：2010-07-01
Applicant: James Walter Wihardja , Mouna Elkhatib
Inventor： James Walter Wihardja , Mouna Elkhatib
CPC classification number: H03G5/04 , H03G5/005 , H04R3/007 , H04R5/033 , H04R2420/07 , H04R2420/09
Abstract: Audio transducers (headphones, speakers, microphones) inherently do not accurately reproduce the signal presented to them at the input. This can be compensated for by taking into account the transducer characteristics and transforming the input signal using a digital signal processor (DSP) to counteract the inaccuracies. However, for the compensation to take place, the DSP needs to know the characteristics of the transducer. For systems with built-in transducers (like laptops with internal speakers) the characteristics of the internal speakers can be stored on the hard-drive of the laptop and the DSP can read this data and make the appropriate compensations. Because a transducer (headphone, speaker, microphone) has its own characteristics that need to be compensated for separately, a profile is supplied to the DSP either by a database lookup based on an identification made by the user or transducer itself or by profile information stored on the transducer. Once the characteristics of a transducer are known, many additional DSP algorithms can be applied in order to improve the audio performance and even safety of the system.
Abstract translation: 音频传感器（耳机，扬声器，麦克风）固有地不准确地再现在输入端呈现给它们的信号。 这可以通过考虑换能器特性并使用数字信号处理器（DSP）来变换输入信号来补偿，以抵消不准确性。 然而，为了进行补偿，DSP需要知道传感器的特性。 对于具有内置传感器（如具有内置扬声器的笔记本电脑）的系统，内部扬声器的特性可以存储在笔记本电脑的硬盘驱动器上，DSP可以读取此数据并进行适当的补偿。 因为传感器（耳机，扬声器，麦克风）具有需要单独补偿的自己的特性，所以通过基于由用户或换能器本身做出的标识的数据库查找或通过存储的简档信息将简档提供给DSP 在传感器上。 一旦知道传感器的特性，就可以应用许多附加的DSP算法，以便改善系统的音频性能甚至安全性。
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10.发明授权Systems and methods for improving the scan-line throughput of an image scanner using a modulated light source 有权用于改善使用调制光源的图像扫描器的扫描线吞吐量的系统和方法公开(公告)号：US08681399B2
公开(公告)日：2014-03-25
申请号：US13672239
申请日：2012-11-08
Applicant: Conexant Systems, Inc.
Inventor： Raphael Bustin
CPC classification number: H04N1/40 , H04N1/40056 , H04N1/401
Abstract: This disclosure provides systems and methods for decoupling the mechanical drive systems of image scanners from the exposure system. A light source, such as an array of light-emitting diodes (LEDs), may be modulated in order to maintain a constant exposure for each scan-line, regardless of the document velocity. Accordingly, the present systems and methods allow for continuous document scanning at varying speeds. An automatic document feeder may dynamically adjust the velocity of a document without negatively impacting the exposure of the image scan. As the velocity of the document is changed, the modulation rate of the light source may be adjusted to maintain a constant exposure.
Abstract translation: 本公开提供了用于将图像扫描器的机械驱动系统与曝光系统分离的系统和方法。 可以调制诸如发光二极管阵列（LED）的光源，以便为每个扫描线保持恒定的曝光，而与原稿速度无关。 因此，本系统和方法允许以变化的速度连续进行文件扫描。 自动文档进纸器可以动态地调整文档的速度，而不会不利地影响图像扫描的曝光。 随着文件的速度改变，可以调整光源的调制速率以保持恒定的曝光。
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