SU742912A1 - Wolsh function generator - Google Patents

Description

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The invention relates to automation and computing, in particular to discrete function generators, and can be used in the construction of functional digital converters, analyzers of a spectrum of periodic signals, signaling devices.

A Walsh function generator is known, which contains a clock pulse generator, an N-bit counter of Walsh function points, an N-bit counter code. Walsh measure, AND block, two-input adders modulo two and modulus two-input adder two 1 1.

The main disadvantage of this generator is its complexity.

The closest in technical solution to the present invention is the Walsh function generator, which contains an N-bit counter clock generator, N AND elements, OR element, trigger 2.

Its disadvantage is low speed.

The purpose of the invention is to increase the speed of the Walsh function generator.

The goal is achieved by the fact that the Walsh functions generation unit contains a clock pulse generator, a K-random counter, Y elements AND, an OR element, a trigger, the clock generator output being connected to the counter input, inputs of the i-th (i 1 - N ) element And connected to the i-th

10 information input of the Ushsh function generator, the direct input of the tth digit of the counter (when the bits are counted by the minor) and the inverse outputs of the digit of the counter from the first to (1-1)

The 15 outputs of the AND elements are connected to the inputs of the OR element, the trigger output is the output of the Walsh function generator, contains a modulo two adder, the first input of which is an additional information input of the Walsh function generator, the second input is connected to the output of the OR element, and the output is the counting trigger input, whose tahto7 input is connected to the output of the clock generator. The drawing shows a functional diagram of the generator of the Walsh functions. The generator contains a generator of 1 pulses of pulses, N is a discharge counter. 2, elements AND 3, element OR 4, two-input adder 5 modulo two trigger 6 Walsh function generator works (as follows When the clock pulses G of the generator 1 clock pulses are received on the i-ro digit 2 at the direct output of the i-ro bit The last generation is the i-th Rademacher R-e Yri function. At the output of the i-th element I 3 there will be a signal,. (e)) lK, (e,) A ...) © R, lei®R. (eM) ®. a): i where is the signal on the i-th input data bus. At the output of the element OR 4 will be C, (g) -,. 1--1 yo then on two-input amounts. of torus 5 modulo two there will be a signal U5U) - u,) -.) ,,; where, the signal on the input information bus with the index O. When the trigger signal 6 is fed to the counting input Uc (K), a clock signal input from the generator 1 tsshtovyh pulses will output the signal UfbV-®u, - ® ® and, De) e, e-oo, by virtue of the equality (i) e Aez-- (e). ) - ®u.) © R (t) a From the last relation, it is clear that the only Walsh function corresponds to the entire set of signals on the input information buses, and the real-time Fs-3 Walsh functions correspond to the set of radio signals. The proposed device has a high speed, because The iipK equal to the clock frequency provides twice the frequency of the generated Walsh, Faure of the invention. The Walsh function generator contains a clock pulse generator, a C-bit counter, N elements AND, the OR element, a trigger, and the output of the clock generator and pulses is connected to the input of the counter, inputs i -th (y 1 - N) AND gates connected to i-th data input of the Walsh function generator, a straight entry. -i-ro counter bit (when counting bits from the youngest) and inverse outputs of the counter bits from the first to (t −1) th outputs of the AND elements are connected to the inputs of the OR element, the output of the trigger of the Walsh functions characterized in that, in order to increase the speed of the Walsh function generator, it contains a modulo two adder, the first input of which is an additional information input of the Walsh function generator, the second input is connected to the output of the OR element, and the output is to the counting input of the trigger, clock entrance to expensively connected to the output of the clock generator. Sources of information, npviHHTbi - j th attention during examination 1, USSR Author's Certificate No. 456238, cl. C About F 1/2, 19.03L973, 2, USSR Author's Certificate NO 596933, cl. G About F 1 / О2, 12. О1Д977 (prototype).

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Claims (1)

Formula of the invention Walsh function generator containing a clock, N-bit counter, N elements AND, OR element, trigger, and the output of the clock is connected to the counter input, inputs Ϊ th О = 1 - N) of the AND element are connected to i -th information input of the Walsh function generator, direct input. i-ro of the discharge of the counter (when counting the bits from the junior side) and the inverse outputs of the bits of the counter from the first to (-i -1) -th outputs of the elements AND are connected to the inputs of the OR element, the trigger output is the output of the Walsh function generator, characterized in that , in order to increase the speed of the Walsh function generator, it contains an adder modulo two, the first input of which is an additional information input of the Walsh function generator, the second input is connected ι: the output of the OR element, and the output to the counting input of the trigger, the clock input to orogo connected to the output of the clock.