Patent ID: 8281156

Claim:
An information processing device comprising: a processor; and a memory device storing instructions which when executed by the processor, causes the processor to, for an information recording medium: (a) determine a placement of a plurality of contents which include a segment data portion and a non-segment data portion, the placement being such that a maximum jump distance which is executed between said segment portion and said non-segment data portion at the time of playback processing is equal to or smaller than a preset maximum jump distance, the plurality of contents including: (i) the segment data portion, the segment data portion including: (A) first segment data which is first encrypted data of a first variation and is encrypted by a first segment key; and (B) second, different segment data which is second, different encrypted data of a second, different variation and is encrypted by a second, different segment key; and (ii) the non-segment data portion, the non-segment data portion being third, different encrypted data which has been applied a unit key that has been set corresponding to a content management unit set as a usage section of contents; (b) execute, using the placement of the plurality of contents, recording processing of the plurality of contents to the information recording medium; and (c) in an event of performing divided recording on different recording layers for a plurality of segment data belonging to the segment data portion, determine data placement of the non-segment data portion either at a first position between the plurality of segment data or a second position adjacent to the plurality of segment data.