| 摘要 |
PROBLEM TO BE SOLVED: To provide an interpolation processor capable of quickly changing interpolating position. SOLUTION: An interpolation calculation part 61 is provided with a shift register constituted of a circuit 21, constant multipliers 22a to 22c and an adder 23 to execute interpolation processing by these circuits. The contents of interpolation processing on mutually different positions (x, x-d, x+d) are respectively set up in the multipliers 22a to 22c. Interpolating positions can be quickly changed by switching respective multipliers 22a to 22c by a multiplxer 71. When a certain interpolating position is changed to x-d, the contents of interpolation processing on positions x-2d, x are set up in the remaining constant multipliers. These constant multipliers 22a to 22c are constituted of basic logical circuits such as AND circuits and can be simply realized by changeably setting up their connection states. |
