SU1493994A1 - Haar function generator - Google Patents

Abstract

The invention relates to automation and computer technology and can be used in information compression systems, in the spectrum of analyzers of the Haar and Fourier spectrum, in functional converters and correlators. The aim of the invention is to simplify the generator. The generator contains counter 2, groups of analog switches 3, decoder 4. Introduction of the decoder simplifies the control circuit of analog keys. 3 il.

Description

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The invention relates to automation and computer technology and can be used in information compression systems, in the spectrum of analyzers of the Haar and Fourier spectrum, in functional converters and correlators.

The purpose of the invention is to simplify the generator.

Diagrams of signals from the outputs of the first (b, and,) and second (Uj, and, and,) groups of the decoder 4 are shown in FIG. 2. Since the transition from the i-th group to the i-t-1-st is reduced to the Decrease of one argument (output i + 1-th bit of counter 2), then to build the decoder 4, the easiest way is to use pyramidal

Figure 1 shows the functional, about the structure.

on the generator circuit for the case of and 3 are the timing diagrams of the decoder output signals and seven Haar functions.

The generator contains a clock generator 1, n-bit (2 is the number of Haar functions with a constant component) binary counter 2, n-1 groups of 2 (, n-1) analog keys 3 in the L-th group, decoder 4.

The signal generator Haar operates as follows.

Under the influence of the clock pulses, the counter 2 generates the Rademacher signals R, Rj, R., taken from its bit outputs. The Rademacher R. signal, taken from the output of the first (senior) bit of counter 2, is the first signal of Haar H. The Rademacher signals R / and R, taken from the outputs of the second and third bits of counter 2, respectively, are fed to the analog inputs. The output signals of the i-th group of the decoder 4 are used to control the keys of the 3rd i-th group. Key 3, if available on its control input

15 single signal, passes a Rademacher bipolar signal segment (tO from the corresponding bit of counter 2). The zero control signal causes the state

Claims (3)

2Q O at the output of the key 3. In a manner, there are three levels in the representation of the functions of the Haar — Fig. 3. Claims of Invention A Haar function generator, containing a 25 1 DI clock generator, p-times db binary counter (2 is the number of Haar functions), p-1 key groups 2 keys in the 1st group (i 1, p-1), the clock generator 3Q pa output is connected to the counter input, the output of the first (senior) counter bit and the key outputs of all groups are generator outputs, different that, in order to simplify the generators 3 of the first and second groups, at the same time, it contains a decoder, and the output with this is the Rademacher R signal (i -tO-ro bit of the counter is connected and R.-) from the outputs R. From the codes of the first and second bits of the counter 2 are fed to the inputs of the decoder 4. At the i-th group of outputs of the decoder 4, the decoding of one hundred percent to two bits of the counter 2 from the first to the i-th (the number of outputs of the i-th group is 2 to the information inputs of all keys of the i-th group, the outputs of the counter bits from the first to (n-1) -th are connected to the inputs of the decoder, the outputs of the i-group of the decoder are connected to the control inputs of the corresponding keys of the i-th group. The output signals of the i-th group of the decoder 4 are used to control the keys of the 3-th group. Key 3, if available on its control input single signal, passes a Rademacher bipolar signal segment (tO from the corresponding bit of the counter 2. The zero control signal causes the condition O at the exit key 3. In a way, there are three levels in the representation of the functions of the Haar - fig.Z. Claims of Invention A Haar function generator, containing a DI clock generator, p-times. P d binary counter (2 is the number of Haar functions), p-1 key groups 2 keys in the 1st group (i 1, p-1), with the clock generator output connected to the counter input, the output of the first (senior) bit of the counter and the key outputs of all groups are generator outputs, characterized in that , in order to simplify the generator, it contains a decoder, and the output (the i-tO-ro bit of the counter is connected to the information inputs of all keys of the i-th group, the outputs of the counter bits from the first to (n-1) -th are connected to the inputs of the decoder, the outputs of the i-group of the decoder are connected to the control inputs of the corresponding keys of the i-th group.