| 摘要 |
The invention concerns a data, learning and/or storage medium comprising: a block (1) whereon are represented a first two-dimensional matrix (2) with x lines (x1-x10) and y columns (y1-y10), two adjacent sides (21, 22) of said matrix bearing each a sign opposite ( 1 , 2 , ) each line (X1-X10) and each column (y1-y10) and a second matrix (3) identical to the first, which bears at the intersection of each line and of each column an additional sign R (x, y) related to those borne by the line and column of the first matrix; a cache (4) whereof the periphery comprises concurrent rectilinear edges (44, 45), the length of each edge (44, 45) being not less than that of the corresponding sides (21-24) of said matrix, an opening being provided on the surface of said cache.
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