ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,219, issued on Dec. 9, was assigned to Amazon Technologies Inc. (Seattle).
"Decoding audio watermarks using time shifts" was invented by Christopher Evans (Somerville, Mass.), Sumit Garg (Acton, Mass.), Ameya Agaskar (Bedford, Mass.), Mohammad Edris Qarghah (Boxborough, Mass.) and Zhengping Jin (Waltham, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a system for performing watermark detection using multiple time shifts to increase a resolution of watermark detection. Instead of decoding blocks of successive audio frames (e.g., 10 ms of audio) using a single watermark decoder, watermark verification can be performed by decod...