Patent · US Active

Method and apparatus for correlating two data sections

US8259873B2 · kind B2 · utility

17Cited by

3References

4Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Peter Georg Baum · Hannover, DE
Walter Voessing · Hannover, DE
Michael Arnold · Altwarmbüchen, DE

Key dates

Filing date	Mar 8, 2007
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Jul 23, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/018
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Watermarking of audio signals intends to manipulate the audio signal in a way that the changes in the audio content cannot be recognized by the human auditory system. The watermark data are decoded from the received watermarked audio signal by correlation with corresponding candidate reference sequences. One or more of the sync symbols are embedded twice in the watermark data frame in the encoder. Thereafter a circular correlation is calculated instead of a standard correlation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.