Invention Grant
US07907211B2 Method and device for generating and detecting fingerprints for synchronizing audio and video
有权
用于生成和检测用于同步音频和视频的指纹的方法和装置
- Patent Title: Method and device for generating and detecting fingerprints for synchronizing audio and video
- Patent Title (中): 用于生成和检测用于同步音频和视频的指纹的方法和装置
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Application No.: US10566003Application Date: 2004-07-20
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Publication No.: US07907211B2Publication Date: 2011-03-15
- Inventor: Job Cornelis Oostveen , David Keith Roberts , Adrianus Johannes Maria Denissen , Warner Rudolph Theophile Ten Kate
- Applicant: Job Cornelis Oostveen , David Keith Roberts , Adrianus Johannes Maria Denissen , Warner Rudolph Theophile Ten Kate
- Applicant Address: US CA Emeryville
- Assignee: Gracenote, Inc.
- Current Assignee: Gracenote, Inc.
- Current Assignee Address: US CA Emeryville
- Agency: Schwegman, Lundberg & Woessner, P.A.
- Priority: EP03102301 20030725
- International Application: PCT/IB2004/051259 WO 20040720
- International Announcement: WO2005/011281 WO 20050203
- Main IPC: H04N9/475
- IPC: H04N9/475 ; H04N5/04

Abstract:
This invention relates to a device and a method of generating a first and a second fingerprint (102,104) usable for synchronisation of at least two signals (101,103) and corresponding method and device for synchronising two or more signals. A fingerprint pair is generated on the basis of a segment of a first signal e.g. an audio signal and of a segment of a second signal e.g. a video signal at each synchronisation time point. The generated fingerprint pair(s) are stored in a database (203) and communicated or distributed to a synchronisation device (303). During synchronisation, fingerprint(s) of the audio signal and fingerprint(s) of the video signal to be synchronised are generated and matched against fingerprints in the database. When a match is found, the fingerprints also determine the synchronisation time point, which is used to synchronise the two signals. In this way, a simple, reliable and efficient way of synchronising at least two signals is obtained. Further, this is enabled without modifying either the first and second signal (or subsequent signals). The signals may even be distorted or changed to some extent while still enabling synchronisation.
Public/Granted literature
- US20080062315A1 Method and Device for Generating and Detecting Fingerprints for Synchronizing Audio and Video Public/Granted day:2008-03-13
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