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    • 83. 发明授权
    • Resampling a signal to perform synchrophasor measurement
    • 重新采样信号以执行同步相机测量
    • US08872699B2
    • 2014-10-28
    • US13326756
    • 2011-12-15
    • Qiao GuoChen ZhangYijun Shi
    • Qiao GuoChen ZhangYijun Shi
    • G01S19/42G01D1/14
    • G01R19/2513G01R23/00G01R25/00Y02E60/728Y04S10/265
    • Performing power quality and synchrophasor analysis on a resampled signal. A first signal may be initially received which corresponds to a power system. The first signal may have a plurality of cycles and may have a frequency that varies over time. One or more parameters may be determined from the first signal. Based on the one or more parameters, the first signal may be resampled to produce an even angle signal. Various power quality measurements may be performed on the even angle signal. Similarly, further processing may be performed to perform synchrophasor measurements, e.g., to determine phasor, frequency, and/or rate of frequency change for the first signal. In some embodiments, the resampling processing elements (e.g., circuitry, programmable hardware elements, processors and memories, etc.) may be shared between the two analyses.
    • 对重采样信号执行电源质量和同步信号分析。 可以首先接收对应于电力系统的第一信号。 第一信号可以具有多个周期,并且可以具有随时间变化的频率。 可以从第一信号确定一个或多个参数。 基于一个或多个参数,第一信号可被重采样以产生均匀角度信号。 可以对均匀角度信号执行各种功率质量测量。 类似地,可以执行进一步的处理以执行同步器测量,例如,以确定第一信号的频率变化的相量,频率和/或速率。 在一些实施例中,可以在两个分析之间共享重采样处理元件(例如,电路,可编程硬件元件,处理器和存储器等)。
    • 85. 发明授权
    • Method and system for noise reduction
    • 降噪方法和系统
    • US08612217B2
    • 2013-12-17
    • US12729379
    • 2010-03-23
    • Chen ZhangYuhong Feng
    • Chen ZhangYuhong Feng
    • G10L21/02
    • G10L21/0208G10L21/02G10L2021/02166H04R3/005H04R2201/401H04R2430/20
    • Techniques pertaining to noise reduction are disclosed. According to one aspect of the present invention, noise in an audio signal is effectively reduced and a high quality of a target voice is recovered at the same time. In one embodiment, an array of microphones is used to sample the audio signal embedded with noise. The samples are processed according to a beamforming technique to get a signal with an enhanced target voice. A target voice is located in the audio signal sampled by the microphone array. A credibility of the target voice is determined when the target voice is located. The voice presence probability is weighted by the credibility. The signal with the enhanced target voice is enhanced according to the weighed voice presence probability.
    • 公开了降噪技术。 根据本发明的一个方面,有效地减少了音频信号中的噪声,同时恢复了目标声音的高质量。 在一个实施例中,麦克风阵列用于采样嵌入噪声的音频信号。 根据波束形成技术处理样本以获得具有增强的目标声音的信号。 目标声音位于由麦克风阵列采样的音频信号中。 目标声音的位置确定目标声音的可信度。 语音存在概率由可信度加权。 具有增强的目标声音的信号根据称重的声音存在概率而增强。
    • 87. 发明申请
    • Resampling a Signal to Perform Power Quality and Synchrophasor Measurement
    • 重新采样信号以执行电源质量和同步相机测量
    • US20130158907A1
    • 2013-06-20
    • US13326676
    • 2011-12-15
    • Qiao GuoChen ZhangYijun Shi
    • Qiao GuoChen ZhangYijun Shi
    • G06F19/00G01R21/133
    • G01R21/133G01R19/2513Y02E60/728Y04S10/265
    • Performing power quality and synchrophasor analysis on a resampled signal. A first signal may be initially received which corresponds to a power system. The first signal may have a plurality of cycles and may have a frequency that varies over time. One or more parameters may be determined from the first signal. Based on the one or more parameters, the first signal may be resampled to produce an even angle signal. Various power quality measurements may be performed on the even angle signal. Similarly, further processing may be performed to perform synchrophasor measurements, e.g., to determine phasor, frequency, and/or rate of frequency change for the first signal. In some embodiments, the resampling processing elements (e.g., circuitry, programmable hardware elements, processors and memories, etc.) may be shared between the two analyses.
    • 对重采样信号执行电源质量和同步信号分析。 可以首先接收对应于电力系统的第一信号。 第一信号可以具有多个周期,并且可以具有随时间变化的频率。 可以从第一信号确定一个或多个参数。 基于一个或多个参数,第一信号可被重采样以产生均匀角度信号。 可以对均匀角度信号执行各种功率质量测量。 类似地,可以执行进一步的处理以执行同步器测量,例如,以确定第一信号的频率变化的相量,频率和/或速率。 在一些实施例中,可以在两个分析之间共享重采样处理元件(例如,电路,可编程硬件元件,处理器和存储器等)。
    • 89. 发明授权
    • Facilitating retrieval of information within a messaging environment
    • 促进消息传递环境中的信息检索
    • US07925716B2
    • 2011-04-12
    • US11295309
    • 2005-12-05
    • Chen ZhangHenri P.J. TorgemaneFrank J. CortT. S. Ramakrishnan
    • Chen ZhangHenri P.J. TorgemaneFrank J. CortT. S. Ramakrishnan
    • G06F15/16
    • G06Q10/107G06F17/30867
    • Techniques and mechanisms are provided that allow participants in an electronic messaging conversation (e.g. email or instant message) to retrieve information related to words and phrases in the electronic messaging conversation without leaving the electronic messaging environment. An electronic messaging environment is provided that includes user interface tools that allow a user to (1) select text within the EM conversation, (2) submit the text to an information retrieval service, such as a search engine, and (3) display the results generated by the information retrieval service. To facilitate the selection of relevant text, certain “suggested words” within the conversation may automatically be highlighted by the instant messaging client. Various techniques are provided for customizing which words are suggested, which sources are searched, and which search terms are used.
    • 提供了技术和机制,其允许电子消息对话(例如电子邮件或即时消息)中的参与者在不离开电子消息环境的情况下检索与电子消息对话中的单词和短语相关的信息。 提供了一种电子消息传送环境,其中包括允许用户(1)在EM会话中选择文本的用户界面工具,(2)将文本提交给诸如搜索引擎的信息检索服务,以及(3) 信息检索服务产生的结果。 为了便于相关文本的选择,会话中的某些“建议单词”可能会被即时消息客户端自动突出显示。 提供了各种技术来定制哪些单词被建议,搜索哪些来源以及使用哪些搜索词。