| 摘要 |
PURPOSE: To assure the quick signal processing with use of the least number of subtracters by applying the image point signals or the signals which are derived out of these point signals via a pre-subtracter to an input terminal where two subtracters are connected in parallel to each other. CONSTITUTION: An estimator 3 outputs a 1st signal part s1 of the estimated value (s) obtained via an image point through an output terminal 16 and also outputs a 2nd signal part s2 obtained via the image point through an output terminal 18. A subtracter 2a subtracts the part s2 from the image point signal stored in a register 10, and a subtracter 2b subtracts the part s1 from a calculated finite difference. Then an adder 20 calculates the value (s) from both parts s1 and s2 . |
