SU936402A2 - Pseudorandom pulse train generator - Google Patents

Description

(54) ALTERNATOR OF SEA-BEARING SEQUENCES

IMMERSHIPS

one

The invention relates to a pulse technique and can be used in the construction of test equipment and control equipment of digital communication systems and computing equipment.

According to the main author. St. No. 783960 is known a pseudo-random pulse sequence generator, containing a clock frequency generator,, d connected to the synchronization input of the first shift register directly and via an inverter with the synchronization input of the second shift register, and a modulo-two cy-l mapper connected to information inputs both registers, and the inputs are connected to the outputs of the shift registers.

However, the known device does not provide the possibility of forming 20 pseudo-case sequences of the AND-tipl, which have the most widespread use, which significantly limits the possibility

the use of this generator in equipment for digital information transmission systems.

A tseku invention is to extend the functionality of the generator due to the formation of pseudo-Hijix sequences of ° M-type.

The goal is achieved by the fact that a pseudo-random pulse sequence generator comprising a clock pulse generator, the output of which is connected to the synchronization input of the first register directly and via an inverter with the synchronization input of the second shift register, whose outputs are connected to the inputs of the modulo-two information inputs shift registers, introduced two elements 2 AND-OR, each of which is connected between the respective outputs of the first and second registers dvd and respective rods vho3 House summato |) and modulo two, the third inputs of two AND elements, OR-connected to the output of the clock, and fourth inputs of elements 2 AND-OR connected to the output iyvertora. The drawing shows a functional generator circuit. The generator of pseudorandom sequences of pulses contains a generator of 1 clock pulses, registers 2 and 3. shift, inverter 4, adder 5 modulo two, elements 6 and 7 2 AND-OR on elements AND 8-H, elements 12 and 3 OR. gap 2 shift; time shift DT is; . The sequence shift at the output of element 13 OR is determined in the same way, depending on how AND 10 and 11 are connected to bits with j numbers of registers 2 and 3, shift. If the ratio of shifts and at the outputs, respectively, from elements 12 and 13 OR to the half of the period of the clock frequency T / 2 is equal to the coefficients (к, п) of irreducible polyno59364026

Connected to the generator's No. 1 generator so-Sources and Formations,

fourth inputs, taken into account during the examination

elements 2 AND-OR connected to the output | USSR author's certificate

House Inverter. № 783960, cl. H 03 K 3/84, 1978.

Claims (1)

The claims' Generator of pseudo-random sequences of pulses according to ed. St., No. 783960, characterized in that, with the expansion of functionality, it introduced two elements 2 AND-OR, each of which is connected between the respective outputs of the first and second shift registers and the corresponding input of the adder modulo two, and the third inputs elements 2 AND-OR 5 936402 6 are connected to the output of the clock generator, and the fourth inputs of the elements 2 AND-OR are connected to the output of the inverter.