Video selection and distribution system
    62.
    再颁专利
    Video selection and distribution system 失效
    视频选择和分配系统

    公开(公告)号:USRE34611E

    公开(公告)日:1994-05-17

    申请号:US913860

    申请日:1992-07-15

    摘要: A video distribution system transmits selected video programs to a number of independently controlled video monitors. The video monitors are arranged in groups, each group being coupled to a distinct transmission medium. A program selector associated with each video monitor generates video connection requests which specify a video source to be connected to that video monitor. A two stage video switch apparatus couples specified video sources to specified video monitors. The first stage routes specified video signals from the video sources to the second stage, which is a frequency multiplexer. The frequency multiplexer then transmits the specified video signals for each group of video monitors in distinct frequency bands on one of the transmission mediums. Each video monitor within each group of monitors has a tuner that is tuned to receive the video signal in a distinct one of the frequency bands. In effect, the transmission medium for each group of video monitors has a separate transmission channel for each of the monitors in the group. Finally, the system has a controller which receives the video connection requests, and controls the video switch apparatus so that it couples specified video sources to specified video monitors.

    摘要翻译: 视频分配系统将所选择的视频节目传送到多个独立控制的视频监视器。 视频监视器被分组地布置,每个组被耦合到不同的传输介质。 与每个视频监视器相关联的节目选择器产生指定要连接到该视频监视器的视频源的视频连接请求。 两级视频切换装置将指定的视频源耦合到指定的视频监视器。 第一级将指定的视频信号从视频源传送到第二级,其是频率复用器。 然后,频率复用器在传输介质之一上以不同的频带对每组视频监视器发送指定的视频信号。 每组监视器中的每个视频监视器具有被调谐以在不同的一个频带中接收视频信号的调谐器。 实际上,用于每组视频监视器的传输介质具有用于组中的每个监视器的单独传输通道。 最后,该系统具有接收视频连接请求的控制器,并且控制视频切换装置,使其将指定的视频源耦合到指定的视频监视器。