SU538380A1 - Display device - Google Patents

Description

one

The invention relates to automation and computing technology and is intended for reproducing graphs on a gas-fired display panel (GUI).

Display devices are known that contain GUIs, U sweep counters, column and row number decoders, keys for switching the panel rows and columns, a memory unit, and a pulse generator.

It is also known a display device comprising a gas discharge display panel, the horizontal and vertical tires of which are connected via key blocks to row and column decoders connected to the memory block and the G2 pulse generator.

However, this known device is characterized by insufficiently reliable reproduction of the initial part of the graph formed when the first columns of the panel are switched. This is due to the fact that the ignition characteristics of the excited cell of the gas discharge panel

depends on its distance from the cell that was burning at the previous point in time.

The aim of the invention is to improve the reliability of the device.

To do this, we introduce a trigger and a reversing counter, iodc / checkout to the pulse generator, trigger and column decoder, the trigger inputs are connected to the corresponding outputs of the column decoder.

The drawing shows a structural electrical circuit of the device.

Claims (2)

The display device contains a gas-discharge indicator panel (GUI) 1, the horizontal and vertical tires of which are connected to the row decoder 4 and the column decoder 5 through blocks 2 and 3 and the outputs of memory block 6 are connected to the inputs of the row decoder 4, and the reverse counter outputs 7 are connected to the inputs of the descrambler of columns 5 and the memory block 6. The inputs of installation O and 1 of the trigger 8 are connected respectively to the first and last outputs of the decoder of columns 5, and its single and zero outputs are connected to the addition and subtraction tires versivnogo DEPT pulse generator 7. Yield 9 Con chen to the count input of up-down counter 7. The device operates as follows. Each of the pulses from the pulse generator 9 changes the value of the code of the reversible counter 7 by one. Suppose that the image is not deployed from left to right. In this case, a signal appears at the (L + 1) -th output of the decoder of columns 5, which by means of key block 3 connects the (L + + 1) -th column and turns off the L -and. Synchronously with switching the GUI 1 columns, the next code word of the displayed process is called from memory block 6, which is fed to the input of row divider 4. The output signal after it, controlled by the keys of block 2, ensures the occurrence of a bit in the line corresponding to the current code value of the memory block 6. A visible bit appears at the intersection at the intersection. When the reversing counter 7 is filled, a cell is excited in the last column of the GUI 1. At the same time, the signal from the last output of the decipher column 5 switches trigger 8, which puts reversible counter 7 in subtraction mode. The next pulse generator 9 reduces the contents of the reversible counter 7 by one. In this case, the cell is excited in the (N - 1) -th column of the ISU 1, which is in the illumination zone. Then, cells will be lit in M-2, N-3 .... 2, columns of the ISU 1, i.e. the image will be deployed in the opposite direction, from right to left. Since the coordinate number is selected from memory 6, determined by the value of the code of the reversible counter 7, then the call of code words from the memory block 6 will also be carried out in reverse order. Before the cell is excited in the first column of the ISU 1, the cell in the adjacent second column is lit, so the cells of the first column of the panel are in the illumination zone and are lit reliably. When switching the first column of the panel, trigger 8 returns to the initial state. The reversible counter 7 is switched to a summation mode. Obviously, the cells of the second column, as well as the cells of the next columns, are also in the illuminated zone and are reliably lit. An invention for indicating, comprising a gas discharge display panel, horizontal and vertical tires of which are connected via key blocks to row and column decoders connected to a memory block and a pulse generator, characterized in Trigger and reversible counter connected to the pulse generator, trigger and column decoder are entered, trigger inputs are connected to the corresponding output1 {and column deactivator. Sources of information taken into account in the examination. 1. Harmon, Matrix indicator on glow discharge elements with self-scanning, Electronics, 1970, vol. 43, No. 5. 2. US patent number 3173745, cl. 340166, publ. 13.07.6O (prototype). A / t