SU1293832A1 - Pulse expander - Google Patents

Abstract

The invention can be used in systems for processing pulse information. The purpose of the invention is to increase the reliability of work. The pulse expander contains the generator of I pulses, dividers 2 and 3 frequencies, trigger 4 and reversible counter 5. The introduction of the elements AND-HEN 6 and 8 and the formation of new functional connections between the elements of the device eliminate the possibility of a transient occurrence on the output bus 10 at the beginning each work cycle. 1 yl. (L

Description

The device relates to a pulse technique and can be used in processing systems, pulse information, mation.

The purpose of the invention is to increase the reliability of work by eliminating the possibility of a transient occurrence on the output bus at the beginning of each work cycle.

The drawing shows an electrical functional diagram of the device.

The pulse expander contains a pulse generator 1, the first output of which is connected to the counting input of the first divider 2 frequencies, and the second input - to the counting input of the second splitter 3 frequencies, the zero input of which is connected to the inverse output of trigger 4 and the zero input of the reversible counter 5, and the output - with the reading input of counter 5, the summing input of which is connected to the output of divider 2 frequencies, and the loan output - to the first input of the first AND-NOT 6 element, the second input of which is connected to the zero bus 7, and the output to the first input of the second el AND-NE 8, the second input of which is connected to the information bus 9, the zeroing input of the splitter 2 frequency and the S input of the trigger 4, and the output with the R input of the trigger 4, the direct output of which is connected to the output bus 10.

The device works as follows

In the initial state on tires 9 and 7 and the exit of the Counter Loan 5 is a single activity level, the state of trigger 4 is arbitrary. Dividers 2 and 3 frequencies and counter 5 are reset to a positive activity level at their installation inputs. The pulse generator 1 generates counting pulses at its outputs that are shifted one relative to the other by half the period.

Before starting work, a pulse arrives on the bus 7 of the zero setting, which, passing through the AND-HE element 6 and the AND-HE element 8, sets the RC — trigger 4 to zero, and also flips the reversing counter 5 and the second divider 3 frequencies. The first frequency divider 2 is under zeroing, until the information pulse, which must be expanded, does not nullify the Arrival on the input bus 9, the information pulse enables the operation of divider 2 and translates RC - trigger 4 into

single state. In turn, trigger 4 allows the second divider 3 to work.

Divider 2 converts the information pulse into a series of pulses that arrive at the summing input of the reversible counter 5, and pulses from divider 3 arrive at the subtracting input until the numbers of pulses arriving at the summing and subtracting inputs match. When switching from 0000 to 1111 and a pulse from the output, the loan of the reversible counter 5 resets trigger 4. The extension pulse of the input pulse is completed.

The duration of the pulses at the expander output is determined by the formula

out

 SX

e-K, - division ratio of the first

divider 2 frequencies; K - coefficient of the second

divider 3 frequencies; / 7- gK - pulse duration

input spreader. LN --5L T „K,

e N, the number of pulses received at the summing input of the reversible counter 5

2 l Number of pulses applied to the subtracting input of the reversible counter 5; Tr - period frequency generator 1

pulses;

Tj is the pulse following period at the subtractive input of the reversible counter 5.

T 2 - TO K Z

output T (N, - l) To K ()

about 1

-tl- / + t

K, B.- Tj ,.

Claims (1)

Invention Formula Pulse expander containing the first input bus, output bus, reversible counter, second input bus connected to the first trigger input, pulse generator, the first output of which is connected to the first input of the first frequency divider, and the second exit to the first input of the second frequency divider, differing in that, in order to increase the reliability of the device operation .. by eliminating the possibility of transient occurrence at the beginning of each cycle of operation, two elements H — NOT are additionally introduced into the device; And - NOT element, the second input of which is connected to the second input bus and the second input. I.Povkhan editor. Order 395/58 Compiled by S. Ermakov Tehred L. Serdyukova Corrector Circulation 902 Subscription VNIISH State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, ul, Proektna, 4 frequency divider, and the output with the second trigger input, the direct output of which is connected to the output bus, and the inverse output with the second input of the second frequency divider and the installation input of the reversing counter, the summing input of which is connected to the output of the first frequency divider, and the subtracting output - With the release of the second divider: frequency. Proofreader M. Demchik