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:
Mar. 19, 2019
Filed:
Apr. 05, 2017
Digimarc Corporation, Beaverton, OR (US);
Aparna R. Gurijala, Port Coquilam, CA;
Digimarc Corporation, Beaverton, OR (US);
Abstract
A dynamic path estimation method reconstructs a program timeline in real time from an incoming stream of audio or visual content in which watermark payloads are redundantly encoded. A receiving device buffers a portion of the incoming signal, executes watermark detection on the contents of the buffer, presents detection results, and then advances the incoming signal in the buffer. Each detection result corresponds to different possible detection paths, as the detector does not reveal the precise position of the watermark payload. The dynamic path estimation method operates on the detection results to determine a global cost function for each possible detection path. As the incoming audio advances through a detection buffer, the method updates cost values for the possible paths, determines a global cost for the paths, and outputs a timeline based on the path of the lowest global cost.