| 摘要 |
<p>PURPOSE:To quickly and accurately output a pulse signal and to shift a display cursor with simple operation by using plural circular belts set parallel and adjacent to each other for vertical and horizontal shifts of the cursor. CONSTITUTION:N pieces of circular belts 11 are set parallel and adjacent to each other and put into a container 12 of a pulse generator. Each belt 11 is hooked over a pair of rolls 21 and the tension is applied to each belt 11 by a tension roll 22. The movement of the belt 11 is detected by a detection roll 24 and transmitted to a rotary encoder 23. Then the pulse signals are outputted from the encoder 23. At the same time, the flat part of each belt 11 is supported by a support means. The belts 11, rolls 22 and 24, the encoder 23 and the support means are stored into the container 12. Then the single side of the flat part of each belt 11 is exposed through an opening of the container 12, and the belts 12 are allocated to the vertical and horizontal shifts respectively. Thus, a display cursor is shifted with simple operation.</p> |
