Patent ID: 9390743
Filing Date: 2016-07-12
CPC Classification: G11B

Claim Text:
1. An optically recordable or reproducible tape recording medium comprising: a set of tracking pattern groups, the set of tracking pattern groups repeatedly provided along a longitudinal direction of the tape recording medium, each of the set of tracking pattern groups including a plurality of tracking pattern blocks arranged in the longitudinal direction, each of the tracking pattern blocks including groove patterns extending in the longitudinal direction and arranged in a width direction perpendicular to the longitudinal direction; and non-tracking pattern areas respectively provided between the tracking pattern blocks and extending over an entire width of the tape recording medium, no groove pattern being included in the non-tracking pattern areas, wherein two of the non-tracking pattern areas, which are adjacent to one pattern block, are configured such that one of the two of the non-tracking pattern areas is substantially longer than another of the two of the non-tracking pattern areas along the longitudinal direction of the tape recording medium.