PROBLEM TO BE SOLVED: To provide a role roots creation method which can make selected four spots different in position by determining six role roots and changing their factional figures.;SOLUTION: What is new with this method for creating role roots is the application of trigonometrical ratio in trigonometrical function to the creation of role roots for regularization. Another new point lies in the fixation of six kinds of role roots, of which four spots are selected when an order is given, and in the change of the factional figures of the four, which makes the selected four spots different in position.;COPYRIGHT: (C)2010,JPO&INPIT
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