Patent ID: 6748362
Filing Date: 2004-06-08
Classification: G06T,G10L,H04N

Abstract:
A process for embedding supplemental data selected from the group consisting of interactive and traditional advertising, merchandising materials, e-commerce solicitations and messages, polls, video games, interactive music and audio/video programs, and computer programs, into a pre-prepared digital media file, that comprises, transforming the media file into encoded sets of frequency domain coefficient representations of the pre-prepared media file information and compressing the file; selecting predetermined coefficient sets; and embedding at rates of the order of thousands of bits per second in media files encoded on the order of a hundred kilobits per second and at selected multiple coefficients of each set to produce a supplemental data file containing such embedded data for enabling user decoding and playback of both the pre-prepared media file information and the embedded supplemental data, wherein the embedding steps uses the least-significant bit of the selected coefficients and wherein single bits of data are embedded in each of a number of coefficients of each set and by computing the parity of such least-significant bits of a group of said coefficients.