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85 条记录 (耗时 0.022 秒)

    Filter bank optimization for acoustic echo cancellation
    61.
    发明授权
    Filter bank optimization for acoustic echo cancellation 有权
    用于声学回声消除的滤波器组优化

    公开(公告)号：US08155304B2

    公开(公告)日：2012-04-10

    申请号：US11784893

    申请日：2007-04-10

    申请人： Qin Li ,  Wei-ge Chen ,  Chao He

    发明人： Qin Li ,  Wei-ge Chen ,  Chao He

    IPC分类号： H04M9/08

    CPC分类号： H04M9/082

    摘要： A communications device is presented for providing bi-directional audio communications between a near-end user and a far-end user via a bidirectional communications channel. The communications device includes an adaptive echo canceller receiving a near-end audio signal and a far-end audio signal and providing an echo-canceled near-end audio signal for transmission to the far-end user via the communications channel. The adaptive echo canceller includes a first bank of analysis filters for filtering the near-end audio signal, a second bank of analysis filters for filtering the far-end audio signal, and a bank of synthesis filters for filtering sub-band echo-canceled signals generated within the adaptive echo canceller. The first and second filter banks have a frequency response optimized to reduce echo residual gain.

    摘要翻译： 呈现通信设备，用于经由双向通信信道在近端用户和远端用户之间提供双向音频通信。 通信设备包括接收近端音频信号和远端音频信号的自适应回波消除器，并提供回波消除的近端音频信号，以经由通信信道传输给远端用户。 自适应回波消除器包括用于滤波近端音频信号的第一组分析滤波器，用于滤波远端音频信号的第二组分析滤波器，以及用于滤波子带回波消除信号的一组合成滤波器 在自适应回波消除器内产生。 第一和第二滤波器组具有优化的频率响应以减少回波残余增益。

    Circuit board assembly
    68.
    发明授权
    Circuit board assembly 失效
    电路板组装

    公开(公告)号：US07864536B2

    公开(公告)日：2011-01-04

    申请号：US12464560

    申请日：2009-05-12

    申请人： Qin Li ,  Yu-Hsu Lin ,  Jeng-Da Wu ,  Chih-Hang Chao

    发明人： Qin Li ,  Yu-Hsu Lin ,  Jeng-Da Wu ,  Chih-Hang Chao

    IPC分类号： H05K7/20 ,  H01L23/36

    CPC分类号： H05K1/0271 ,  H05K1/181 ,  H05K3/0064 ,  H05K7/205 ,  H05K2201/10409 ,  H05K2201/10734 ,  H05K2201/2009

    摘要： A circuit board assembly includes a circuit board with two heat dissipating assemblies mounted thereon and an L-shaped back plate attached to an underside of the circuit board. Each of the heat dissipating assembly includes at least a pair of securing members at opposite corners thereof. The back plate includes a first portion and a second portion each defining at least a pair of circular protrusions corresponding to the securing members of the heat dissipating assemblies.

    摘要翻译： 电路板组件包括其上安装有两个散热组件的电路板和附接到电路板的下侧的L形背板。 每个散热组件在其相对的角部处包括至少一对固定构件。 背板包括第一部分和第二部分，每个部分限定与散热组件的固定部件相对应的至少一对圆形突起。

    Method and system for implementing internet of things service
    70.
    发明授权
    Method and system for implementing internet of things service 有权
    实现物联网络的方法与系统

    公开(公告)号：US09071657B2

    公开(公告)日：2015-06-30

    申请号：US13643005

    申请日：2010-08-19

    申请人： Qin Li ,  Gongcai Zhou ,  Yaning Song

    发明人： Qin Li ,  Gongcai Zhou ,  Yaning Song

    IPC分类号： G06F15/173 ,  G06F15/16 ,  H04L29/08 ,  H04W4/00

    CPC分类号： H04L67/34 ,  H04W4/50 ,  H04W4/70

    摘要： Disclosed in the present invention are a method and system for implementing an Internet of Things service. In the present invention: a service generation module generates a description script and a flow script according to a required service, sends the description script and the flow script to an application generation module and a control module, respectively; the application generation module generates an application according to the description script and sends the same to an access module; the access module receives an input of an Internet of Things terminal, processes the input of the Internet of Things terminal using the application, and sends the processed data to a control module; the control module runs the flow script and invokes an execution module to execute an operation according to the data sent by an access module; and the execution module executes an operation according to the invocation of the control module.

    摘要翻译： 在本发明中公开了一种用于实现物联网服务的方法和系统。 在本发明中：服务生成模块根据所需要的服务生成描述脚本和流程脚本，分别将描述脚本和流程脚本发送到应用生成模块和控制模块; 应用生成模块根据描述脚本生成应用，并将其发送到访问模块; 访问模块接收物联网终端的输入，使用应用处理物联网终端的输入，并将处理的数据发送到控制模块; 控制模块运行流程脚本，并调用执行模块，根据访问模块发送的数据执行操作; 并且执行模块根据控制模块的调用来执行操作。