| 摘要 |
<p>PURPOSE:To provide a cursor control circuit which has superior operability for the large movement and fine movement of a cursor by adding a function which detects the quantity of variation in the rotating speed of a track ball and judges whither a cursor is moved large or small from the quantity of the variation to vary the mobility of the cursor. CONSTITUTION:The cursor controller has means 2, 3, and 4 which detect the quantity of variation in the rotating speed of the track ball and a switching means 13 for the mobility of the cursor per angle of rotation of the track ball. When the variation quantity of the rotating speed is large, it is judged that the track ball is rotated fast quickly, the mobility of the cursor per angle of rotation of the track ball is increased, but when the variation quantity of the rotating speed is small, it is judged that the track ball is rotated slowly, the mobility of the cursor per angle of rotation of the track ball is decreased.</p> |
