Invention Grant
US08458744B2 Method for reducing channel change times and synchronizing audio/video content during channel change
有权
用于在频道改变期间减少频道改变时间和同步音频/视频内容的方法
- Patent Title: Method for reducing channel change times and synchronizing audio/video content during channel change
- Patent Title (中): 用于在频道改变期间减少频道改变时间和同步音频/视频内容的方法
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Application No.: US12312394Application Date: 2006-12-13
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Publication No.: US08458744B2Publication Date: 2013-06-04
- Inventor: Jiwang Dai , Alan Jay Stein
- Applicant: Jiwang Dai , Alan Jay Stein
- Applicant Address: FR Boulogne Billancourt
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Boulogne Billancourt
- Agent Robert D. Shedd; Paul P. Kiel
- International Application: PCT/US2006/047633 WO 20061213
- International Announcement: WO2008/057110 WO 20080515
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F13/00 ; H04N5/445

Abstract:
A digital A/V apparatus provides reduced channel changes times and maintains synchronization between audio and video content during a channel change event. According to an exemplary embodiment, the digital A/V apparatus includes at least one signal receiver for receiving a first audio stream, a first video stream and a second video stream, wherein the first and second video streams represent the same program and the first video stream has at least one characteristic different from the second video stream; a first audio signal processor for processing the first audio stream to generate a first processed audio stream; a first video signal processor for processing the first video stream to generate a first processed video stream; a second video signal processor for processing the second video stream to generate a second processed video stream having a delay with respect to the first processed video stream; a first buffer for buffering the first processed audio stream to provide de-jittering; a renderer for rendering the first processed audio stream and the second processed video stream in response to a channel change command; a switch for switching from the second processed video stream to the first processed video stream after the renderer begins rendering the second processed video stream, and thereby causing the renderer to begin rendering the first processed video stream; and whereby synchronization between the first processed audio stream and the first processed video stream is maintained during a channel change event.
Public/Granted literature
- US20100064316A1 METHOD FOR REDUCING CHANNEL CHANGE TIMES AND SYNCHRONIZING AUDIO/VIDEO CONTENT DURING CHANNEL CHANGE Public/Granted day:2010-03-11
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