| 摘要 |
The system includes an arithmetic circuit which compates a respective radius (rA, rB) from the given arc entre (O) to the arc starting point (Ps) and arc end point (Pe). The values computed are stored in respective registers. A comparator circuit compares the values and if they are unequal provides a logic high level signal to an arithmetic circuit. This computes a new radius (r) which is the arithmetic mean of the two differen radii (rA, rB). A further arithmetic circuit receives the new radius (r) and computes a new centre (On) with co-ordinates (iN, jN) on the basis of given operation equations.
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