DISC PROTECTION SCHEME

摘要

The invention relates to a portable storage medium, a media player and a method of disturbing the perception of content provided in a first media stream. The first media stream is combined with other media streams to at least one transport stream and provided, together with at least one second media stream, on the portable storage medium. The media player includes a control unit, which retrieves a playing control unit from the storage medium and implements it, (step 37), receives a user selection of reproducing content provided in the first media stream, (step 40), selects the second media stream for presentation in relation to the first media stream based on the user selection, (step 44), and presents content provided in the second media stream in relation to the first media stream so that the content of the second media stream disturbs the perception of content provided in the first media stream, (step 48).