Patent ID: 8499159
Filing Date: 2013-07-30
Classification: G06F,G10L,H04N

Abstract:
1. A method for inserting a non-human sense detectable user fingerprint in a digital media file the method comprising: watermarking the digital media file with a human sense detectable watermark wherein the watermarking is accomplished by utilizing frequency hopping watermarking technique wherein in the watermarking at least two frequency coefficients are modified to generate human senses detectable noise in the digital media file; posting the watermarked digital media file to a user; and removing the human sense detectable watermark from the digital media file in a client device by utilizing media file-specific information issued by a digital media right owner by transforming the human sense detectable watermark to a non-human sense detectable individual user fingerprint in the digital media file wherein the non-human sense detectable individual user fingerprint is accomplished by transforming the at least two frequency coefficients in the watermarking during the first use of the digital media file by utilizing the digital media file-specific information.