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    • 5. 发明授权
    • Low latency digital audio over packet switched networks
    • 低延迟数字音频通过分组交换网络
    • US07970019B2
    • 2011-06-28
    • US12468913
    • 2009-05-20
    • Gregory F. ShaySteven Gray Church
    • Gregory F. ShaySteven Gray Church
    • H04J3/06
    • H04L12/66H04J3/0632H04J3/0664H04L65/80
    • Method and Apparatus for delivering audio signals from a source node to a destination node on a network. The apparatus uses a number of switches that transmit prioritized data on a packet network. The switches are coupled to a number of send/receive nodes for sending and receiving digital audio signals on the data network. The audio packet size and the receive buffers are sized to store a minimum possible number of audio samples to minimize latency in processing audio signals arriving at said receive node, but still ensure audio delivery without interruption due to packet data network delay. An additional feature of the invention is recovery of clock synchronization over the same data network by novel arrangement of transmission of timing packets on the network. By sending a multiplicity of packets at irregular intervals a minimum network transit delay can be determined by each of the receive nodes which allows the receive nodes to filter out packet network transit delay error and maintain accurate local clocks.
    • 用于将音频信号从源节点传送到网络上的目的地节点的方法和装置。 该装置使用多个在分组网络上传送优先数据的交换机。 开关耦合到多个发送/接收节点,用于在数据网络上发送和接收数字音频信号。 音频分组大小和接收缓冲器的大小被设置为存储最小可能数量的音频采样以最小化处理到达所述接收节点的音频信号的等待时间,但仍然确保由于分组数据网络延迟而不中断的音频传送。 本发明的另一个特征是通过网络上的定时分组的传输的新颖布置来恢复同一数据网络上的时钟同步。 通过以不规则的间隔发送多个分组,可以由每个接收节点确定最小的网络传输延迟,这允许接收节点滤除分组网络传输延迟误差并保持精确的本地时钟。
    • 8. 发明授权
    • Housing for electronic lock
    • 电子锁住房
    • US07690230B2
    • 2010-04-06
    • US11535356
    • 2006-09-26
    • John Steven Gray
    • John Steven Gray
    • E05B47/00E05B65/08E05B65/06E05B43/00H05K5/00
    • H01M2/1022E05B9/002E05B47/00E05B2047/0058Y10T70/5155Y10T70/5199Y10T70/7028Y10T70/7062
    • A housing assembly adapted to fit into a mortised recess in a door is provided for accommodating components of an electronic lock mechanism. The housing assembly comprises a housing including opposed major side walls at least partially defining an opening into the housing. A circuit board comprising electronic circuitry for operating the lock mechanism is disposed in the housing. A bracket for holding batteries is adapted to be disposed in the opening in the housing. The bracket is accessible when the housing is in the mortised recess of the door such that the bracket is movable relative to the housing between a first position and a second position. In the first position the bracket is in the housing and in the second position the bracket is at least partially outside of the housing such that batteries may be inserted into or removed from the bracket.
    • 设置适于装配到门中的榫眼的外壳组件,用于容纳电子锁定机构的部件。 壳体组件包括壳体,该壳体包括至少部分地限定到壳体中的开口的相对的主侧壁。 包括用于操作锁定机构的电子电路的电路板设置在壳体中。 用于保持电池的支架适于设置在壳体的开口中。 当壳体位于门的榫眼凹槽中时,支架可接近,使得支架能够在第一位置和第二位置之间相对于壳体移动。 在第一位置,支架位于壳体中,并且在第二位置,支架至少部分地位于壳体外部,使得电池可以插入支架或从支架移除。