SU1462377A1 - Device for controlling recorder - Google Patents

Abstract

The invention relates to automation and computing and can be used in the design of a control system for the recorder's p-drive carriage. The purpose of the invention is to simplify the device. The goal is achieved in a device containing a pulse generator, the output of which is connected to the first input of the AND element, the driver of the control signals, the mechanism for moving the information carrier, the trigger, the register, the counter and the OR element, in that it contains an AND-NOT element whose first input connected to the inverse trigger output. A text line is printed, the character positioning program of which is written to the register by the information inputs, is performed by a symbol with a fixed carriage in the presence of signal 1 at the device output after printing the next character of the text line at the trailing edge of the signal 1 at. the control input of the register is shifted by one position to the group of inputs of the counter. At the end of the printout of a line of text, the device is reset to its original state by a signal I and the cell is repeated, sp. (C (L

Description

The invention relates to automation and computing and can be used to control the stepper drive of the carriage of the recording device.

The purpose of the invention is to simplify the device.

The drawing shows the block diagram of the device.

The device contains a register 1, a counter 2, an element OR 3, an element AND-NOT 4, an element AND 5, a trigger 6, a generator 7 of pulses and a driver 8 of control signals. The drawing also indicates the stepper drive 9 of the recorder, the output K) of the device, the first control input, the input 11, the information input 12, and the second control input 13 (reset input) of the device.

The device works as follows.

Before printing the next line of text, the recorder positioning program is recorded in register 1 (stack memory) as a sequence of binary codes of groups of widths of spaces and characters of this line of text on the information inputs 12 of the device.

The printout of the programmed text line is realized sequentially by reference, by command, nori

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 Stepping to input 11 as a logical unit, with a signal of readiness. Output 10. Printing is performed mechanically by contacting a relief point of a character selected on a group font with a storage medium (not shown). Upon completion of printing of the sign selected on the font carrier by the falling edge of the signal of the logical unit at input 11, counter 2 (subtracting) from register J enters the binary code of the group of the width of the printed sign, the width of which determines the range and accuracy of the carriage differential the registrar. At the same time, the contents of register 1 are shifted up one position to the group of installation inputs of counter 2, Trigger 6 ino to the falling edge of the generator ipa 7 goes into one state allowing the receipt of generator 7 pulses through element 5 of the generator 8 and to the entrance of the countdown counter 2.

Upon completion of testing the carriage of the specified codes by the stepper motor. groups of the width of the printed sign of the number of pulses of the generator 7; the subtractive counter 2 goes into the zero initial state and disconnects the generator 7 from the driver 8 of the control units. The trigger 6 returns to its original state and the signal at output 10 becomes equal to a logical one, permitting the printing of the next character of the text line. In the development of the code, the space control of the differential movement of the carriage is carried out similarly.

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The carriage return device, by a signal of a logical unit at input 13, is reset, and the next line of text is printed out in a manner similar to that described.

Claims (1)

Apparatus of the Invention /: y1 recorder control comprising a pulse generator, the output of which is connected to the first input of the AND element, a driver of control signals, the output of which is connected to the inputs of the transfer mechanism of the information carrier, a trigger, the direct output of which is connected to the second input of the And element, register , the counter and the element ШШ, о.т are spreading with the fact that, in order to simplify the device, it contains an AND-NOT element, the first input of which is connected to the inverse output of the trigger, the inverse of the clock input of which is The dinene is with the output of the pulse generator, the forward setup input is with the output of the OR element, and the inverse output is the output of the device, the output of the eleg: ..: AND terminal is connected to the control input of the control signal generator and the counter count input, the information inputs of which are connected to the outputs of the register, the information inputs of which are the information inputs of the device, the first control input of which is the second input of the NAND element, the output cat. Secondly, it is connected to the first installation inputs of the counter and the register, the second installation inputs of which are the second control input of the device.