The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2016
Filed:
Dec. 09, 2014
Tata Consultancy Services Ltd., Mumbai, Maharashtra, IN;
Krishna Rao Kakkirala, West Godavari, IN;
Srinivasa Rao Chalamala, Hyderabad, IN;
Bala Mallikarjuna Rao Garlapati, Hyderabad, IN;
Abstract
A computer implemented system for audio watermarking for providing robust and blind audio watermarking. The system comprises a watermark embedding system wherein an audio signal is divided into audio frames, multi-level District Wavelet Transform (DWT) is applied on each frame, followed by Singular Value Decomposition (SVD) and embedding the watermark, further followed by inverse SVD and inverse DWT to get watermarked audio frames which are combined to generate a watermarked audio signal. The system further comprises watermark extracting detection system wherein the watermarked audio signal which may be attacked and/or modified is divided into watermarked audio frames, multilevel DWT is applied on each watermarked audio frame, followed by SVD, extracting the embedded watermarked, correlating the extracted watermark with pre-stored watermarks, calculating Peak to Sidelobe ratio (PSR) from the correlation coefficient arrays and finally comparing each PSR with a threshold to authenticate the embedded watermark.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile