| 摘要 |
<p>There is disclosed a direct digital position readout transducer for a 2m x 2n array of positions, adapted to assign coordinates uniquely to each of the 2m+n positions of the array, comprising readout elements arranged in m + n layers parallel to the array each ith layer (i = 1 to m) having 2i and each jth layer (j = 1 to n) having 2j readout elements, the elements of each layer occupying half of the 2m+n positions in that layer corresponding to the positions in the array and the ith and jth layers respectively assigning a '1' or a '0' to the ith and jth significant bits of the binary coordinates according as a signal incident at a position affects or does not affect a readout element in the ith and jth layer and the elements being so patterned within the layers as to yield thereby unique binary coordinate codes to the positions.</p> |
