BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an example of a processing method of a watermark information detection according to the present invention.
FIG. 2 shows an example of configuration of a reproduction apparatus used for the watermark information detection according to the present invention.
FIG. 3 shows a configuration example of a region of an optical disc where information is recorded.
FIG. 4 shows an example of a watermark information embedding method.
FIG. 5 shows recording cluster configuration of a Blu-ray disc.
FIG. 6 shows another example of a watermark information detection method according to the present invention.
FIG. 7 shows another configuration example of the region containing information recorded on the optical disc.