SU1103808A3 - Device for shifting discharge spot in gas discharge display panel - Google Patents

Abstract

DEVICE FOR SHEAR bit SPOTS B. GAS DISCHARGE DISPLAY PANEL, comprising series-connected pulse generator, a counter and a decoder, a control unit and a switch, one output of which is connected to the outputs of the control unit, inputs of which are connected to the outputs of the counter, characterized in that, in order to increase reliability and simplification of the device; a memory block is inserted in it, the inputs of which are connected to the outputs of the decoder, and the outputs to other inputs of the switch. (L with

Description

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The invention relates to information display devices. Known devices for displaying information that shift the bitmap and contain a pulse generator connected to the input of a frequency divider and to the first inputs of the AND elements of the first group, the second inputs of which are connected to the first counter, the input of which is connected to the output of the AND element, The first input of which is connected by the output of the first trigger, and the second input with the output of the frequency splitter, the first input of the first trigger is connected to the input unit, and the second input - to the output of the second counter, the outputs of which are connected to the character generator With a cable whose outputs through the elements of the second group are connected to horizontal tires of the matrix display panel, the vertical tires of which are combined into groups, each of which is connected to the output of the corresponding element AND of the first group 1. However, with an increase in the number of groups of tires or an increase in the number of pulses, delivered to each electrode during one period of operation of the device, the shape of the pulses applied successively to each group of buses becomes asymmetrical, which leads to the complication of control of the device Purpose and The invention is a step in reliability and simplification of the device. This goal is achieved by the fact that a device for shifting a discharge spot in a gas discharge indicator panel, containing successively connected pulse generator, a counter and a decoder, a control unit and a switch, one of which inputs are connected to. the outputs of the control unit, the inputs of which are connected to the outputs of the counter, are inserted a memory block, the inputs of which are connected to the outputs of the decoder, and the outputs are connected to other inputs of the switch. FIG. 1 and 2 show the design of the gas discharge display panel; in fig. 3 is a block diagram of the device for controlling the panel in FIG. 4 shows the types of pulses necessary for performing the shift spot operations for one device operation period in FIG. 5 is a diagram explaining the pulse supplying sequence to the panel electrodes of FIG. 6 is a diagram of the operation of the device} in FIG. 7 is an example of memory execution of 4 x 16 bits. In the drawings, the following symbols are accepted: counter 1, decoder 2, memory block 3, control unit 4, switch 5i 6.7 write pulses having a relatively long duration (about 5-10 μs), 8 - erase pulse having a shorter duration (on the order of one microsecond), which erases the wall charge left after the transfer of the discharge spot, 9 is a control pulse or overlap, having a short duration, 10 is a write pulse. The device works as follows. The outputs of the four bits of the counter are the inputs of the address decoder 2, the signals from which from the block of permanent memory 3 in the form of parallel four-bits are sequentially read pulse signals, which are chains of pulses 6-9, V which can be obtained from addresses 0- 15 (Fig. 7). These chains of pulses 6-9 are distributed to master blocks not shown in the drawing, connected to the buses. t in the sequence indicated in FIG. 3. The distribution of pulses in the desired sequence is performed by switch 5 by signals from the control unit 4. The one-time relationship of the chains of pulses in the device operation period can be set more accurately by increasing the bits of the fixed memory block (in this case, the number of bits of counter 1 also ). The memory block can be made programmable, which makes it possible to modify the chain of pulses by changing the content of the memory. The device according to the invention makes it possible to carry out a stable and accurate operation of the discharge bit shift by selecting the appropriate combination of control pulse chains.

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Claims (1)

DEVICE FOR SHIFTING THE DISCHARGE SPOT V. GAS DISCHARGE INDICATOR PANEL, comprising a pulse generator, a counter and a decoder, a control unit and a switch, one output of which is connected to the outputs of a control unit, the inputs of which are connected to the outputs of the counter, characterized in that, in order to increase reliability and simplification of the device, a memory block is inserted into it, the inputs of which are connected to the outputs of the decoder, and the outputs are connected to other inputs of the switch.