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    • 4. 发明申请
    • System and method for synchronizing multiple media devices
    • 用于同步多个媒体设备的系统和方法
    • US20060227245A1
    • 2006-10-12
    • US11102642
    • 2005-04-11
    • Michael PoimboeufFrancis BernardKevin SmithParkson WongTodd StockWilliam Lawson
    • Michael PoimboeufFrancis BernardKevin SmithParkson WongTodd StockWilliam Lawson
    • H04N9/475
    • G11B27/10
    • Multiple media devices are synchronized in a multi-media system having a computer system, a plurality of media devices, and a display system. Each media device to be synchronized receives a front-end synchronization signal that periodically increments a front-end counter. The front-end counter represents an unadjusted system time (UST). The media device obtains a frame of data to be displayed from a computer system. The media device also receives a back-end synchronization signal that periodically increments a back-end counter each time a frame of data is to be displayed. The back-end counter represents a media stream count (MSC). UST and MSC data are periodically transmitted to the computer system for analysis and use by a synchronization algorithm. Specifically, UST is transmitted to the computer system each time a frame of data is obtained, and a UST/MSC pair is transmitted to the computer system each time a frame of data is displayed. The computer system executes a synchronization algorithm that uses the transmitted UST and UST/MSC pair to maintain the media devices in a synchronized state.
    • 多媒体设备在具有计算机系统,多个媒体设备和显示系统的多媒体系统中被同步。 要同步的每个媒体设备接收一个周期性地增加前端计数器的前端同步信号。 前端计数器表示未调整的系统时间(UST)。 媒体设备从计算机系统获得要显示的数据帧。 媒体设备还接收在每次要显示数据帧时周期性地增加后端计数器的后端同步信号。 后端计数器表示媒体流计数(MSC)。 UST和MSC数据周期性地发送到计算机系统,以便通过同步算法进行分析和使用。 具体地说,每次获得数据帧时,UST被发送到计算机系统,并且每当显示数据帧时,UST / MSC对被发送到计算机系统。 计算机系统执行同步算法,该算法使用所发送的UST和UST / MSC对来维持媒体设备处于同步状态。