Method for determining a point in time within an audio signal
US8620466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jun 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8205
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for determining a point in time within an audio signal, the audio signal having been transmitted from a broadcast station to a client and to a server, the method including: deriving, at the server, first signature data from the audio signal, wherein a reference point in time is associated with the beginning or end of the audio data corresponding to the first signature data; deriving, at the client, second signature data from the audio signal, wherein the second signature data are derived in the same manner as the first signature data at the server; comparing the first and second signature data; and determining the point in time to be equal to the reference point in time depending on a result of the comparing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.