A METHOD OF MODIFYING THE OPERATION OF A PERCEPTUAL CODING SYSTEM IN ACCORDANCE WITH SUPPLEMENTAL INFORMATION

摘要

A method of modifying the operation of the encoder function (2) and / or the decoder function (4) of a perceptual coding system in accordance with supplemental information, such as a watermark, so that the supplemental information may be detectable in the output of the decoder function. One or more parameters are modulated in the encoder function and / or the decoder function in response to the supplemental information.