Orthogonal function generating circuit and orthogonal function g

Details Orthogonal function generating circuit and orthogonal function g Orthogonal function generating circuit and orthogonal function g

1996-02-29

1998-09-08

Mai, Tan V.

Boots, shoes, and leggings

G06F 1500

Patent

active

058054847

ABSTRACT:
In an orthogonal function generating circuit, orthogonal functions are generated with high precision by a small-scale circuit. The circuit uses an orthogonal transformation between time domain digital data and frequency domain digital data to obtain one of the time domain digital data and the frequency domain digital data from the other digital data. The circuit has a first data holder for holding first data and a second data holder for holding second data. A first multiplier multiplies the first data, and a second multiplier multiplies the first data by a second coefficient. A third multiplier multiplies the second data by a third coefficient, and afourth multiplier multiplies the second data by a fourth coefficient. An adder adds an output of the first multiplier to an output of the third multiplier, and outputs the result of addition so as to feed back the result of addition to the first data holder; and a subtracter subtracts an output of the second multiplier from an output of the fourth multiplier and for outputs the result of subtraction so as to feed back the result of subtraction to the second data holder.

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