| 摘要 |
<p>PURPOSE:To make unnecessary a correcting element and to stabilize the output at a click point by setting a blind sector to an output value in the vicinity of the click point of a volume and correcting tracking adjustment data so as to change linearly in accordance with the variable value of the volume at an area excluding the blind sector. CONSTITUTION:A tracking adjustment volume 30 is connected between a power source and a ground a slider 31 is connected to an analog digital (A/D) con verter 32 and the output of the A/D converter 32 is inputted to a data reading circuit 33. The data reading circuit 33 has a blind sector for the input data, output data to change linearly for the input data are obtained at the area exclud ing the blind sector, the output data correspond to the delaying quantity of a capstan reference signal and the dispersion of the delaying quantity at the click point of the volume 30 is absorbed since the blind sector exists. Thus, the correcting element like sub-volume is not made unnecessary and the output at the click point can be stabilized.</p> |
