How to experience screen special effects on video compact disc players

摘要

The present invention relates to a method for generating screen special effects of a video compact disc player.;To this end, the present invention records a management level according to each picture in the tag_impression of the user_data area as data, and also records a plurality of quantization matrices corresponding to this management level in the disc production. Sets the system management level desired by the user, and selects a quantization matrix according to the difference between the management level detected during playback and the management level set by the user to perform inverse quantization on the picture data so as to apply a special effect to the displayed image. To make it happen.;Therefore, in the case of an adult disc or the like, there is an effect that it is possible to prevent the viewer from watching the part to avoid viewing, such as indiscriminate viewing of a minor.