Patent ID: 6980508
Filing Date: 2005-12-27
Classification: G06F,G11B,Y10T

Abstract:
1. An optical recording medium comprising first and second recording areas, wherein: said first recording area is divided into a plurality of zones; each of said plurality of zones is divided into a fixed plurality of divided areas; said plurality of divided areas included in each of said plurality of zones have one recording capacity among M number of recording capacities (M is an integer more than 1) set in advance and are assigned addresses; and identification information indicating said one recording capacity is recorded in said second recording area; wherein said second recording area including records information indicating a difference in recording density from the first recording area; said medium comprises a magneto-optical disk; and at least one of said first and second recording areas comprises an area in which information is recorded by a magnetic field modulation recording system and recorded information is reproduced by a reproduction system using a super resolution phenomenon.