| 摘要 |
PURPOSE:To improve the fitting accuracy of a straight line, to realize a high speed device, and to improve a processing efficiency, by using a method of least square at every taking out of each position data consisting of a sequence of points, and making a device into an exclusive circuit. CONSTITUTION:A sequence of points address generator 5 receives a start signal ST, and a sum of products signal MAP is issued from a timing generator TG17. The first coordinate data I0 and J0 are loaded at a sum of products computing element 10 in an accumulation arithmetic circuit 6, and the coordinate data I0, at a sum of products computing element 11 and an accumulator 13, and furthermore, the coordinate data J0, at a sum of products computing element 12 and an accumulator 14 respectively. At the time of a sum of products processing signal ACC becomes active, each of the computing elements 10-12 and the accumulators 13 and 14 in the circuit 6 starts a prescribed accumulation arithmetic process. The same accumulation arithmetic process operation is repeated until a comparator 15 output a completion signal CADR to the TG17 by a coincidence between a sequence of points start point number MA and a completion point number.
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