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132 条记录 (耗时 0.041 秒)

    Histogram-Based Linearization of Analog-to-Digital Converters
    95.
    发明申请
    Histogram-Based Linearization of Analog-to-Digital Converters 审中-公开
    模数转换器的基于直方图的线性化

    公开(公告)号：US20130085703A1

    公开(公告)日：2013-04-04

    申请号：US13249845

    申请日：2011-09-30

    申请人： Ray (Ramon) GOMEZ ,  Bruce J. Currivan ,  Lin He ,  Loke Tan ,  Frank Van der Goes ,  Cy (Chun-Ying) Chen ,  Jiangfeng Wu ,  Thomas Kolze

    发明人： Ray (Ramon) GOMEZ ,  Bruce J. Currivan ,  Lin He ,  Loke Tan ,  Frank Van der Goes ,  Cy (Chun-Ying) Chen ,  Jiangfeng Wu ,  Thomas Kolze

    IPC分类号： G06F17/17 ,  G06F19/00

    CPC分类号： G06F17/17 ,  H03M1/1042 ,  H03M1/12

    摘要： Embodiments provide histogram-based methods and system to estimate the transfer function of an ADC, and subsequently to linearize a non-linear ADC transfer function. Embodiments include blind algorithms that require no a priori knowledge of the input signal distribution. Embodiments can be implemented using cumulative (i.e., cumulative distribution function (CDF)) or non-cumulative (i.e., probability density function (PDF)) histograms. According to embodiments, a non-linear transfer function can be estimated by linearly approximating successive local intervals of the transfer function. Linearly approximated successive local intervals of the transfer function can then be used to fully characterize and closely estimate the transfer function.

    摘要翻译： 实施例提供基于直方图的方法和系统来估计ADC的传递函数，并且随后对非线性ADC传递函数进行线性化。 实施例包括不需要输入信号分布的先验知识的盲算法。 实施例可以使用累积（即，累积分布函数（CDF））或非累积（即，概率密度函数（PDF））直方图来实现。 根据实施例，可以通过线性近似传递函数的连续局部间隔来估计非线性传递函数。 传递函数的线性逼近的连续局部间隔可用于完全表征和密切估计传递函数。

    Method and system of tracking and stabilizing an image transmitted using video telephony
    96.
    发明授权
    Method and system of tracking and stabilizing an image transmitted using video telephony 有权
    跟踪和稳定使用视频电话传输的图像的方法和系统

    公开(公告)号：US08379074B2

    公开(公告)日：2013-02-19

    申请号：US12755202

    申请日：2010-04-06

    申请人： Bruce J. Currivan ,  Xuemin Chen

    发明人： Bruce J. Currivan ,  Xuemin Chen

    IPC分类号： H04N7/14

    CPC分类号： H04N7/141

    摘要： Herein described is a system and method that tracks the face of a person engaged in a videophone conversation. In addition to performing facial tracking, the invention provides stabilization of facial images that are transmitted during the videophone conversation. The face is tracked by employing one or more algorithms that correlate videophone captured facial images against a stored facial image. The face may be better identified by way of employing one or more voice recognition algorithms. The one or more voice recognition algorithms may correlate utterances of the person engaged in a conversation to one or more stored utterances. The identified utterances are subsequently mapped to a stored facial image. In a representative embodiment, the system used for performing facial tracking and image stabilization comprises an image sensor, a lens, an actuator, and a controller/processor.

    摘要翻译： 这里描述了跟踪参与可视电话会话的人的面部的系统和方法。 除了执行面部跟踪之外，本发明提供了在可视电话会话期间传送的面部图像的稳定性。 通过采用将可视电话捕获的面部图像与存储的面部图像相关联的一种或多种算法来跟踪面部。 可以通过采用一种或多种语音识别算法来更好地识别脸部。 一个或多个语音识别算法可以将从事对话的人的话语与一个或多个存储的话语相关联。 所识别的话语随后映射到存储的面部图像。 在代表性的实施例中，用于执行面部跟踪和图像稳定的系统包括图像传感器，透镜，致动器和控制器/处理器。

    Asymmetric Multi-Channel Adaptive Equalizer
    99.
    发明申请
    Asymmetric Multi-Channel Adaptive Equalizer 失效
    非对称多通道自适应均衡器

    公开(公告)号：US20110200091A1

    公开(公告)日：2011-08-18

    申请号：US13020503

    申请日：2011-02-03

    申请人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    发明人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    IPC分类号： H04L27/01

    CPC分类号： H04L25/03057 ,  H04L27/0014 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0053

    摘要： An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode.

    摘要翻译： 公开了一种用于补偿由通信系统中的发射机，接收机和/或通信信道产生的非线性效应的装置。 通信系统的接收机包含补偿在调制和/或解调过程中产生的图像的图像消除模块。 图像消除模块包括精确的载波校正环路，以校正发射机和接收机之间的频率偏移。 图像消除模块包括粗略采集模式和决策指导模式。 当与粗略采集模式进行比较时，决定导向模式允许接收机具有更大的信噪比。

    Asymmetric multi-channel adaptive equalizer
    100.
    发明申请
    Asymmetric multi-channel adaptive equalizer 失效
    非对称多通道自适应均衡器

    公开(公告)号：US20080187038A1

    公开(公告)日：2008-08-07

    申请号：US11878224

    申请日：2007-07-23

    申请人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    发明人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    IPC分类号： H04L27/01

    CPC分类号： H04L25/03057 ,  H04L27/0014 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0053

    摘要： An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode.

    摘要翻译： 公开了一种用于补偿由通信系统中的发射机，接收机和/或通信信道产生的非线性效应的装置。 通信系统的接收机包含补偿在调制和/或解调过程中产生的图像的图像消除模块。 图像消除模块包括精确的载波校正环路，以校正发射机和接收机之间的频率偏移。 图像消除模块包括粗略采集模式和决策指导模式。 当与粗略采集模式进行比较时，决定导向模式允许接收机具有更大的信噪比。