| 摘要 |
<p>PURPOSE:To facilitate the input operation for parameters by securing the input of parameters with dependence on only the moving direction where a ball is operated regardless of the direction of a parameter input device main body on a plane after this body is once set on the plane in the fixed direction. CONSTITUTION:A bottom surface member 6 which holds a ball 2, the detecting rollers 3a and 3b, and the converters 4a and 4b is combined with a cover member 7 which covers those said parts so that both members 6 and 7 can freely rotate with each other within a plane 5. Thus it is possible to supply the parameters with dependence on only the moving direction where the ball 2 is rotated regardless of the direction of the main body 1 of a parameter input device on the plane 5 after the body 1 is once put on the plane 5 in the fixed direction. As a result, an operator can facilitate his/her input operation of parameters regardless of a fact whether the member 7 is always kept in the fixed direction or not.</p> |
