| 摘要 |
<p>Digital servo apparatus includes a counter adapted to count inputted reference clock pulses to display time data. The output of the counter is latched by a first tacho pulse (controlled signal) to a first latch circuit and the contents of the first latch circuit is transferred by a second tacho pulse to the second latch circuit and the present count data of the counter is latched to the first latch circuit. A discrimination circuit is adapted to discriminate whether or not a control signal is within a predetermined control amount, based on time difference data latched to the first and second latch circuits, and deliver an output signal corresponding to a predetermined control amount based on the result of discrimination.</p> |
