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    • 7. 发明申请
    • Packet media gateway with a secondary PSTN connection and method for time slot switching
    • 具有辅助PSTN连接的分组媒体网关和时隙切换方法
    • US20070064677A1
    • 2007-03-22
    • US11222924
    • 2005-09-12
    • Ying Xiong
    • Ying Xiong
    • H04L12/66
    • H04L29/06027H04L65/1026H04L65/1036H04L65/1069H04L65/80H04M7/0057H04M7/0069
    • A media gateway for coupling to both an Internet service provider frame switched network and a PSTN provider circuit switched network comprises an FXS port to which a telephony device may be coupled to initiate a connection to a destination. A programmable DSP includes a time-division multiplexing bus coupled to the FXS port and a PSTN port which couples to a subscriber loop of the circuit switched network. Compression instruction code is programmed into the digital signal processor in response to determining that the connection to the destination is to be established using a real time communication channel over the frame switched network. Time slot switching instruction code is programmed into the digital signal processor in response to determining that the connection to the destination is to be established over the circuit switched network. The time slot switching instruction code provides for: i) buffering digital audio data received from the FXS port during an occurrence of a periodic time slot assigned to the FXS port and transferring such digital audio data to the PSTN port during an occurrence of a periodic time slot assigned to the PSTN port; and ii) buffering digital audio data received from the PSTN port during an occurrence of the periodic time slot assigned to the PSTN port and transferring such digital audio data to the FXS port during an occurrence of the periodic time slot assigned to the FXS port.
    • 用于耦合到因特网服务提供商帧交换网络和PSTN提供商电路交换网络的媒体网关包括FXS端口,电话设备可以耦合到FXS端口以发起到目的地的连接。 可编程DSP包括耦合到FXS端口的时分复用总线和耦合到电路交换网络的用户环路的PSTN端口。 响应于确定要使用帧交换网络上的实时通信信道确定到目的地的连接,将压缩指令码编程到数字信号处理器中。 时隙切换指令代码被编程到数字信号处理器中以响应于确定通过电路交换网络建立到目的地的连接。 时隙切换指令代码提供:i)在分配给FXS端口的周期性时隙发生期间缓冲从FXS端口接收的数字音频数据,并且在周期时间发生期间将这样的数字音频数据传送到PSTN端口 时隙分配给PSTN端口; 以及ii)在分配给PSTN端口的周期性时隙发生期间缓冲从PSTN端口接收的数字音频数据,并且在分配给FXS端口的周期时隙发生期间将这样的数字音频数据传送到FXS端口。
    • 9. 发明授权
    • LED illumination device
    • LED照明装置
    • US08016458B2
    • 2011-09-13
    • US12494311
    • 2009-06-30
    • Tay-Jian LiuYing XiongFeng Tian
    • Tay-Jian LiuYing XiongFeng Tian
    • F21V29/00
    • F21V29/02F21K9/23F21K9/233F21V17/12F21V29/507F21V29/677F21V29/75F21V29/773F21V29/83F21Y2115/10H01L2924/0002H01L2924/00
    • An LED illumination device includes a hollow lamp housing, an optical part having a light source, a circuit board and a heat dissipation part received in the hollow lamp. The optical part and the circuit board are located at front and rear ends of the lamp housing, respectively. The heat dissipation part is located between the optical part and the circuit board, and includes a cylindrical air guider, a heat sink and a cooling fan received in the air guider. The heat sink includes a base and a plurality of fins. The light source is arranged on a heat absorbing surface of the base. The air guider includes an annular ring and a plurality of spaced vanes extending axially from the annular ring. The lamp housing defines a plurality of first and second air holes through a circumferential surface thereof corresponding to the air guider.
    • LED照明装置包括中空灯壳体,具有光源的光学部件,电路板和容纳在中空灯中的散热部分。 光学部件和电路板分别位于灯壳体的前端和后端。 散热部分位于光学部件和电路板之间,并包括一个圆柱形空气引导器,一个散热片和一个接收在空气导向器中的冷却风扇。 散热器包括基座和多个翅片。 光源布置在基座的吸热表面上。 空气导向器包括环形环和从环形环轴向延伸的多个间隔开的叶片。 灯壳体通过其对应于空气导向器的圆周表面限定多个第一和第二气孔。