G - Physics – 06 – F
Patent
G - Physics
06
F
354/137
G06F 1/02 (2006.01) G06F 7/64 (2006.01) G06T 3/00 (2006.01) G09G 5/20 (2006.01)
Patent
CA 1169565
ABSTRACT The invention relates to a system for generating digital signals corresponding to functions of two variables, the functions corresponding to a selectable analytical relation and being of the type that can be described in a discrete form by a differential-equation or a simultaneous system of differ- ential equations and at least one boundary-condition or initial condition. The invention provides such a system which is capable of generating the signals at a considerably higher rate than conventional systems. The inventon includes a signal generator for forming binary signals for each of the two variables, the signals being representative for the differential-equation(s) and the at least one boundary-condition or initial condition. Also included is a comparator for successively comparing, in the direction from the most signifi- cant bit (MSB) to the least significant bit (LSB), bits of equal significance of the two signals, each of which corresponds to one variable. A rolling-point determinator is provided for determining a rolling-point on basis of at least one of the comparing operations, The rolling-point is a point determined by the values of both variables and relative to which a preceding part of the function, considered to be graphically displayed in a cartesian coordinate- system, is rolled over 180° so as to obtain a next part of the function connec- ted to said preceding part. Finally, the system includes a memory for memor- izing signals corresponding to at least the last-mentioned next part of the function in the form of bit-couples.
361688
de Roo Jozef G.m.
Oosterlinck Andre J.j.
Van Daele Jean A.r.n.
Van Den Berghe Herman B.
Fetherstonhaugh & Co.
Leuven Research & Development V.z.w.
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