Patent ID: 8065033
Filing Date: 2011-11-22
Classification: G11B

Abstract:
1. A library apparatus, comprising: a cell unit including a plurality of cells arrayed in a matrix and configured to accommodate a storage medium, each of the cells having left and right edges, the left and right edges both having an optical characteristic different from other portions of the cells; a cell fixing plate configured to fix the cell unit thereon, the cell fixing plate having an optical characteristic different from the left and right edges, a holder configured to insert the storage medium into one of the cells or extract the storage medium from one of the cells, said holder including a reading unit configured to acquire data of the left and right edges, including first data of either of the left and right edges of one of the cells located at one end of a column of the cells extending in a Y-axis direction, and second data of both the left edge and the right edge of the cells in the column, other than the cell located at the one end, acquired while the holder moves in the Y-axis direction at a predetermined moving pitch, and a position controller configured to move the holder over the cell unit in X-axis and Y-axis directions to position the holder at a desired position, said position controller determining a position of each of the cells based on the data of the left and right edges of the cells acquired by the reading unit while moving the holder in the Y-axis direction, said position controller including