SU1238144A1 - Device for checking parameters of gaseous-discharge display panel - Google Patents

Abstract

The invention relates to the field of automation and computer technology and is intended to determine the parameters of gas discharge display panels (GIP). The purpose of the invention is to increase the speed of the device, which is achieved by the introduction of a delay element controlled by a power source, isolating element, matching element and functional connections. Vertical GUI buses are selected alternately by a column selection unit and at the moment of selecting the next column, a horizontal pulse of the ignition pulse generator is applied to the horizontal GUI tires, which ensures the occurrence of a discharge in the GUI cell. If the reading element does not register cell burning with nominal brightness, then in the next scan image frame, the pulse-to-code converter will increment the content, and the controlled power supply will increase the voltage amplitude by an amount proportional to the low-order bit of the converter. At the time of registration by the reading element of a significant increase in cell brightness, the change in signals from the output of the converter by the signal from the reading element stops, the same signal, delayed by the data stabilization time, goes to the memory block, where the content of the converter is recorded at the address taken from the sensors the coordinate position of the reading element, which is then transferred to the next controlled cell, and its parameters are taken similarly. I il. 2 SS (L to with 00 4 4

Description

The invention relates to the field of automation and computer technology and is intended to determine the parameters of gas-discharge indicator panels (GIP).

The purpose of the invention is to increase the speed of the device.

The drawing shows a block diagram of the proposed device.

The device comprises a column selection unit 1 connected to vertical tires of the gas-discharge indicator panel 2 (GUI), a sweep counter 3, a 4-clock pulse generator, matching elements 5, for example, resistors, isolation element 6, controlled power supply 7, evolution element 8 13, an ignition pulse generator 9, a read element 10, sensors 11 and 12 of the coordinate position of the read element 10, a pulse width to frequency converter 13, a delay element 14 and a memory block 15.

The device works as follows.

The GUI 2 vertical tires are alternately selected by the column selection unit 1, controlled by the sweep counter 3, at the input of which impulses are output from the paTOjia output of 4 clock pulses.

-1a horizontal GUIs, at the moment of selecting the next column, a voltage pulse is applied from the generator 9 ignition pulses, ensuring the occurrence of a discharge in the ISU cell 2. The amplitude of the part of the pulse that follows the cell ignition pulse, is gradually increased by source 7 power output ig.1pulsami with the Converter 13.

The duration of the discharge pulse is several times longer than the duration of the ignition pulse.

At the beginning of the measurement process, the transmitter 13 is pre-resetted at input 16 "Resetting and installing the reading element 10, mechanically connected to the sensor 11 (columns) and 12 (cTpoic), opposite the selection to monitor the GUI 2 cell.

The impulse "Start-up on input 17 of converter 13, controlling the source 7, nocTeiieniiO increase.; 1infers its output voltage applied to horizontal buses (lines) of GIG 2 through resistors 5.

If the reading element 10 is not registering a cell with a nominal luminance, in the next scan image frame, the transducer 13 increments the content, and therefore the source 7 increases the amplitude of the voltage by an amount proportional to the weight

the lower bit of the converter 13. At the time of registration by the reading element 10 of a significant increase in cell brightness, the change of signals from the output of the converter 13 by a signal from the reading element 10 stops.

The same signal, delayed at the time of data stabilization, is fed to the resolution input of the memory block 15 and the contents of the converter 13 are recorded in the memory block 15 at the address taken from sensors 11 and 12 of the reading element 10. Next, the reading element 10 is transferred to the next monitored the cell and its parameters are taken similarly.

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Claims (1)

Invention Formula A device for monitoring parameters of a gas-discharge indicator panel (GUI), containing serially connected clock generator, the output of which is connected to the input of the generator of ignition pulses, a sweep counter and a column selection unit connected to the vertical GUI, reading element optically associated with GUI cells, and a pulse width converter into a code characterized in that, in order to increase the speed of the device, it contains a delay element controlled by a power source, visors, matching elements, a memory unit and sensors of the coordinate position of the reading element mechanically connected with it, the outputs of which are connected to the address inputs of the memory unit whose resolution input is connected to the output of the delay element whose input is connected to the reading element and information input of the pulse duration converter into the code whose output is connected to the information input of the memory unit and the input of the controlled power source whose output and the output of the ignition pulse generator through the corresponding elements}, the unbindings are connected to one of the conclusions of the matching elements, the other conclusions of which are connected with the corresponding horizontal ISU tires. Hct analyzer 1