Signal-converting device

Abstract

A signal converting device receives input data obtained by continuously scanning data for a predetermined period along one of i axes X1, X2 . . . Xi of an imaginary i-dimensional spatial coordinate system, where the data exists in given space-time regions a1, a2 . . . ai extending along these axes. The device processes the data in a given sub time-space region Nj included in any time-space region aj (where j=1, 2 . . . i) at a magnification specific to a given sub time-space region Mj (1.ltoreq.j.ltoreq.i). As a result, the device outputs new data existing in the sub time-space region Mj. The region Mj is identical to the sub time-space region Nj, or exists outside the time-space region aj. The device has an input data item converter that converts the input data items so that the product of output data items existing in small regions Lm of ordinates representing spatial positions in the sub time-space region Mj extending along at least one axis Xj is nearly equal to the product of the corresponding input data items existing in small regions Ln or ordinates representing spatial positions or is nearly equal to K times a given constant other than zero, and for converting data items existing in one axis while data items on any other axis remain in a fixed state.