| 摘要 |
<p>PURPOSE:To recognize execution of the rounding processing with the touch of click stop by adding a click stop function to an operating roll of cursor coordinates. CONSTITUTION:An operating roll 1 is turned in accordance with the motion of a finger 0 to turn a revolving shaft 10 and is connected to a multirotary potentiometer which converts the turning quantity to a proportional electric signal. Ferromagnetic material chips 12a are buried in positions, which divide the circumference of a positioning roll 12 equally into (n), on the positioning roll 12 and are stuck to the revolving shaft 10. A driving circuit 14 consists of a switching element and energizes an electromagnet 13 in accordance with the input of a control signal. Though the operating roll 11 is turned freely in accordance with the motion of the finger 0 conventionally when the control signal is turned off and is in the non-excited state, this free turning is changed to the touch of click stop in positions equally divising the circumference, where chips 12a and the electromagnet 13 face each other, by the attraction when the control signal is turned on.</p> |
