Invention Grant
- Patent Title: System and method for synchronizing multiple media devices
- Patent Title (中): 用于同步多个媒体设备的系统和方法
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Application No.: US11102642Application Date: 2005-04-11
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Publication No.: US07996699B2Publication Date: 2011-08-09
- Inventor: Michael K. Poimboeuf , Francis S. Bernard , Kevin A. Smith , Parkson Wong , Todd S. Stock , William R. Lawson
- Applicant: Michael K. Poimboeuf , Francis S. Bernard , Kevin A. Smith , Parkson Wong , Todd S. Stock , William R. Lawson
- Applicant Address: US CA Palo Alto
- Assignee: Graphics Properties Holdings, Inc.
- Current Assignee: Graphics Properties Holdings, Inc.
- Current Assignee Address: US CA Palo Alto
- Agency: Sterne, Kessler, Goldstein & Fox PLLC
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G06F1/12

Abstract:
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.
Public/Granted literature
- US20060227245A1 System and method for synchronizing multiple media devices Public/Granted day:2006-10-12
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