A system and method for advertisement sponsored content distribution. It enables a person to experience advertising embedded content free of charge or to experience advertising free content plus an alternative advertising presentation for a consideration. This requires use of a special, system compatible playback device/program which must support alternative presentation capabilities (such as audio, still images, video, messages, etc.).

 
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< Method and apparatus for watermarking wavetable synthesis architectures

< Pre-filteriing to increase watermark signal-to-noise ratio

> System for providing a document associated with a video signal

> Method of generating Huffman code length information

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