Invention Grant
US08358375B2 Method and device for accurately and easily measuring a time difference between video and audio
有权
用于准确，轻松地测量视频和音频之间时差的方法和设备
- Patent Title: Method and device for accurately and easily measuring a time difference between video and audio
- Patent Title (中): 用于准确，轻松地测量视频和音频之间时差的方法和设备
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Application No.: US12091437Application Date: 2006-10-06
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Publication No.: US08358375B2Publication Date: 2013-01-22
- Inventor: Hiroaki Ikeda , Reiko Iwai
- Applicant: Hiroaki Ikeda , Reiko Iwai
- Applicant Address: JP
- Assignee: National University Corporation Chiba University
- Current Assignee: National University Corporation Chiba University
- Current Assignee Address: JP
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Priority: JP2005-312111 20051027
- International Application: PCT/JP2006/320098 WO 20061006
- International Announcement: WO2007/049451 WO 20070503
- Main IPC: H04N9/475
- IPC: H04N9/475
Abstract:
To solve the problems in the prior art, the present invention provides a method for measuring a time difference between digital video signals and digital audio signals, wherein said method comprises the steps of extracting respective time series data from respective frequency domains of said digital video signals and said digital audio signals; statistically identifying the cross-correlation of said time series data in said frequency domains, thereby measuring the time difference between said digital video signals and said digital audio signals.
Public/Granted literature
- US20100053340A1 METHOD AND DEVICE FOR ACCURATELY AND EASILY MEASURING A TIME DIFFERENCE BETWEEN VIDEO AND AUDIO Public/Granted day:2010-03-04
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