System and method for interconnecting and mixing multiple audio and
video data streams associated with multiple media devices
    1.
    发明授权
    System and method for interconnecting and mixing multiple audio and video data streams associated with multiple media devices 失效
    用于互连和混合与多媒体设备相关的多个音频和视频数据流的系统和方法

    公开(公告)号:US5170252A

    公开(公告)日:1992-12-08

    申请号:US506399

    申请日:1990-04-09

    摘要: A system (10) has a pipeline (12) comprised of a multi-channel bi-directional video bus (14), multi-channel bi-directional audio bus (16), and a digital interprocessor communications bus (18). The pipeline (12) is equipped with a number of ports (20) where media controller (microprocessor) printed circuit cards (22) can be connected, thus providing a convenient method for connecting media devices (24) to the pipeline (12). In this manner, a media device's video input and output can be optionally connected to any of the video pipes (26) of the video bus (14). Similarly, the media device (24) audio inputs and outputs can be optionally connected to any of the audio bus (16) pipes (26). The switching is accomplished through a pair of analog multiplexers (28) whose connection options have been commanded by local microprocessor (30) resident on the media device microprocessor control board (22). The local microprocessor (30) receives instructions for the pipeline switch interconnections through the interprocessor serial communications bus (18 ). The pipeline (12) is constructed on a motherboard printed circuit board (32) that additionally contains a microprocessor (34) that serves as the local area network controller for the interprocessor communications. A software driver interconnects the multiple video and audio devices (24) in different configurations in response to user inputs to a host data processing system so that physical assignments of the device communications on the pipeline (12) are transparent to the user.

    摘要翻译: 系统(10)具有由多声道双向视频总线(14),多声道双向音频总线(16)和数字处理器间通信总线(18)组成的流水线(12)。 管道(12)配备有可以连接媒体控制器(微处理器)印刷电路卡(22)的多个端口(20),从而提供用于将媒体设备(24)连接到管道(12)的方便的方法。 以这种方式,媒体设备的视频输入和输出可以可选地连接到视频总线(14)的任何视频管道(26)。 类似地,媒体设备(24)音频输入和输出可以可选地连接到任何音频总线(16)管道(26)。 通过一对模拟多路复用器(28)来完成切换,模拟多路复用器(28)的连接选项已被驻留在媒体设备微处理器控制板(22)上的本地微处理器(30)命令。 本地微处理器(30)通过处理器间串行通信总线(18)接收用于流水线开关互连的指令。 管道(12)构造在主板印刷电路板(32)上,该主板印刷电路板(32)另外包含用作处理器间通信的局域网控制器的微处理器(34)。 响应于对主机数据处理系统的用户输入,软件驱动器以不同配置将多个视频和音频设备(24)互连,使得管道(12)上的设备通信的物理分配对于用户是透明的。

    Apparatus and method for automatic operation of a high pressure mercury
arc lamp
    2.
    发明授权
    Apparatus and method for automatic operation of a high pressure mercury arc lamp 失效
    高压汞弧灯自动操作的装置和方法

    公开(公告)号:US4672271A

    公开(公告)日:1987-06-09

    申请号:US723219

    申请日:1985-04-15

    摘要: Apparatus and method for automatic control of with a high pressure mercury arc lamp is described. The apparatus includes a control unit that monitors the current and the voltage supplied to the arc lamp. A temperature measuring device is coupled to a portion of the lamp for monitoring the temperature. The control device controls a flow of air past the lamp by controlling the power to a fan motor or by controlling the flow of air by controllable dampers. After equilibrium conditions are established, the control unit determines and stores the equilibrium values of current and voltage. Thereafter the control unit monitors the values of current and voltage periodically. When these measured voltage and current values are outside of predetermined limits, the control unit initiates shut down operation of the lamp.

    摘要翻译: 描述了用高压汞弧灯自动控制的装置和方法。 该装置包括一个控制单元,该控制单元监视提供给电弧灯的电流和电压。 温度测量装置耦合到灯的一部分以监测温度。 控制装置通过控制风扇马达的功率或通过可控制的阻尼器控制空气流来控制空气流过灯的流动。 在建立平衡条件后,控制单元确定并存储电流和电压的平衡值。 此后,控制单元周期性地监视电流和电压的值。 当这些测量的电压和电流值超出预定极限时,控制单元启动灯的关闭操作。