Patent ID: 7190661
Filing Date: 2007-03-13
Classification: G11B

Abstract:
1. A structure for storing selectively retrievable data comprising a data layer of substantially uniform composition, said data layer having: a. a first level; b. a second level substantially parallel to said first level and vertically displaced from said first level in a first direction; c. a third level substantially parallel to said second level and vertically displaced from said second level in said first direction; d. a first feature, said first feature elongated and three-dimensional, at least a portion of said first feature vertically extending from said second level to said third level, said first feature having a first principal axis substantially parallel to said second level, a transverse axis substantially normal to said first principal axis and parallel to said second level, and a vertical axis substantially normal both to said first principal axis and to said second level, said first feature characterized in that: e. a second feature, wherein: