Patent ID: 7161892

Claim:
An optical recording medium comprising: a recording layer having a surface which is indented in cross section extending in a tracking direction, said surface being formed with tracks extending along a spiral; the tracks including a plurality of first sections and a plurality of second sections, the first sections differing from the second sections with respect to at least one of width and depth, the first sections alternating with the second sections in a manner such that a trailing end of one section is connected to a leading end of another section; a first overlapping portion in which the trailing end and another portion of each first section overlap each other in the tracking direction, said trailing end and said another portion of said each first section being located in adjacent tracks; and a second overlapping portion in which the trailing end and another portion of each second section overlap each other in the tracking direction, said trailing end and said another portion of said each second section being located in adjacent tracks.