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    System and Methods for Recording a Compressed Video and Audio Stream
    2.
    发明申请
    System and Methods for Recording a Compressed Video and Audio Stream 有权
    记录压缩视频和音频流的系统和方法

    公开(公告)号：US20110008022A1

    公开(公告)日：2011-01-13

    申请号：US12501975

    申请日：2009-07-13

    申请人： Alex Y. Lee ,  Anthony C. Lam ,  Andrew Ng ,  Chakrit Nimmanant

    发明人： Alex Y. Lee ,  Anthony C. Lam ,  Andrew Ng ,  Chakrit Nimmanant

    IPC分类号： H04N5/93 ,  H04N7/26 ,  H04N5/91

    CPC分类号： H04N9/8045 ,  G11B27/031 ,  G11B27/034 ,  G11B27/10 ,  G11B27/105 ,  H04N7/155 ,  H04N9/8042 ,  H04N9/8063 ,  H04N19/44 ,  H04N19/573 ,  H04N19/577 ,  H04N21/4334 ,  H04N21/44008 ,  H04N21/4402

    摘要： A system for recording a compressed video-audio stream includes a decoder for decoding the video and audio packets of the stream, a multimedia recorder for recording the video and audio portions of the stream, and a video frame editor. In one embodiment the multimedia recorder receives and ignores initial delta frames of the video portion of the stream while buffering the audio portion of the stream received until a first key frame arrives and is buffered and decoded and wherein upon receiving a command to record, the system writes a copy of the key frame at a predefined interval the first interval corresponding with the start of the recording of the audio portions of the stream, the write interval repeated successively until a next key frame arrives whereby the video and audio is then recorded as received.

    摘要翻译： 用于记录压缩视频 - 音频流的系统包括用于解码流的视频和音频分组的解码器，用于记录流的视频和音频部分的多媒体记录器以及视频帧编辑器。 在一个实施例中，多媒体记录器接收和忽略流的视频部分的初始增量帧，同时缓冲所接收的流的音频部分，直到第一关键帧到达并被缓冲和解码，并且其中当接收到记录命令时，系统 以对应于流的音频部分的开始记录的第一间隔的预定间隔写入关键帧的副本，连续重复写入间隔直到下一个关键帧到达，从而视频和音频然后被记录为接收的 。

    Doppler perimeter intrusion alarm system using a leaky waveguide
    3.
    发明授权
    Doppler perimeter intrusion alarm system using a leaky waveguide 失效
    多普勒周边入侵报警系统使用漏波导

    公开(公告)号：US3947834A

    公开(公告)日：1976-03-30

    申请号：US465677

    申请日：1974-04-30

    申请人： David N. Gershberg ,  Alex Y. Lee ,  Clair F. Parker, Jr.

    发明人： David N. Gershberg ,  Alex Y. Lee ,  Clair F. Parker, Jr.

    IPC分类号： G01S13/56 ,  G08B13/18

    CPC分类号： G01S13/56

    摘要： A flexible line distributed antenna, defining a perimeter of interest, radiates energy supplied from a transceiver. Motion around the flexible line causes the reflected energy which is intercepted by the flexible distributed antenna to be coupled back to the transceiver as a doppler frequency for processing in an alarm system. Reflected energy from the antenna to the transceiver is amplified and rectified into a DC voltage. This DC voltage is integrated to produce a time varying signal to a level detector that responds to a predetermined value of the integrated DC voltage. A response by the level detector provides an actuating signal to an alarm indicator through alarm logic. Ambient conditions around the extended flexible line distributed antenna are monitored by external sensors having outputs for controlling amplifier gain and triggering the alarm logic. For improved motion detection reliability, reflected energy from the antenna is coupled to a transceiver providing two output signals. These two output signals are processed separately for coupling to a voltage comparator driving an alarm indicator through alarm logic.

    摘要翻译： 限定感兴趣的周长的柔性线分布式天线辐射从收发器提供的能量。 围绕柔性线路的运动导致由柔性分布式天线拦截的反射能量作为多普勒频率耦合回收发器，用于在报警系统中进行处理。 从天线到收发器的反射能量被放大并整流成直流电压。 该DC电压被积分以产生对电平检测器的时变信号，电平检测器响应于集成DC电压的预定值。 电平检测器的响应通过报警逻辑向报警指示器提供启动信号。 扩展的柔性线分布式天线周围的环境条件由具有用于控制放大器增益和触发报警逻辑的输出的外部传感器监控。 为了改善运动检测的可靠性，来自天线的反射能量耦合到提供两个输出信号的收发器。 这两个输出信号被单独处理，以耦合到通过报警逻辑驱动报警指示器的电压比较器。