| 摘要 |
<p>PURPOSE:To achieve high speed linear interpolation, by operating a digital value of difference of position and level of adjacent time series data after analog conversion and making interpolation of the adjacent time series data with only one operation. CONSTITUTION:Position difference (t) and level difference (m) of a sample value are respectively applied to input terminals 11 and 12 of an interpolation controller 10, and when a start signal is applied from an input terminal 13, the (t) is applied to a reciprocal device 14 and the (m) is given to a multiplication type DA converter 15. A digital value 1/t from the device 14 is applied to a DA converter 16 and converted into an analog value and supplied to the converter 15 as a multiplication analog signal 1/t. The converter 15 derives a gradient (a)=m/t by using 1/t as a reference voltage and it is applied to an integrator 17. The integrator 17 outputs an interpolation signal H(t)=deltaadt obtained from the integration of the gradient (a) to an output terminal 18.</p> |
