SU1441454A1 - Device for displaying information - Google Patents

Abstract

The invention relates to automation and computer technology, in particular to information display devices on gas discharge display panels. The purpose of the invention is to increase the contrast of the image. The goal is achieved by the fact that in the device containing the horizontal bus sampling unit 1, the gas-discharge display panel (GUI) 2, the scanning unit 3, the limiting elements on the resistors 11 connected to the corresponding horizontal GUI buses are combined into two groups and connected the outputs of the first and second keys 9 and 10, connected to the first and second elements And 7 and 8, connected to the first and second frequency dividers 4 and .5 and the pulse shaper 6, which provides the excitation of groups of display elements scale hydrochloric mesh in adjacent frames, reducing the luminescence brightness of the graticule. 1 hp f-ly, 1 ill. in cl

Description

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The invention relates to automation and supervisory technology, in particular to information display systems on a gas discharge display panel (HIP) using an auxiliary discharge marker grid.

The purpose of the invention is to increase the image contrast.

The drawing shows a structural diagram of the proposed device.

The device contains a unit 1 for sampling horizontal tires, a gas-discharge display panel (GUI) 2, a unit 3 for scanning, the first 4 and second 5 frequency dividers, a driver 6 pulses, the first 7 and second 8 And elements, the first 9 and second 0 keys and restrictive elements on resistors 1,

Resistors 1G are connected to the electrodes of rows with a certain step to provide a display of the scale grid. A trigger having two antiphase outputs can be used as the first 4 frequency divider. The trigger input is connected to the high-order bit of the scan code bus. The horizontal bus sampling unit 1 is a switch of high voltage transistors with current-limiting resistors in the collector circuits. The 3 r. Sweep unit includes a decoder that converts the input sweep code into a positional transducer and high-voltage transistors connected between the output of the decoder and the corresponding electrodes of the GUI 2 column. A single-oscillator can be used as a pulse former 6, - tel 5 - counter.

The device works in the following way. The electrical signals of the information displayed on the information signal bus to the horizontal bus sampling unit 1 change the signal level at the outputs of this unit and, accordingly, on the row electrodes of the ISU 2, the image is scanned on the column electrodes by the scanner unit 3 controlled by signals coming through the scan code bus. Information input is synchronized with the image scan

The grid should be permanently present in the image, perform the scaling function of the display

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My information and to ensure the spatial preparation of the gas-discharge gaps of the GUI 2 display elements. The design of the existing DC indicators for individual use provides reliable spatial preparation with an excited display element (EO) of up to 20 gas-discharge gaps located along the column on either side of the 30 grid. When the decimal numbering system is widely adopted in measuring equipment, it is necessary to place the scale grid in increments of 0 EO, which is redundant for the pre-breakdown preparation of the GUI. In addition, the constant burning of each tenth of the EO on each column reduces the overall durability of the indicator. The device reduces the number of simultaneously burning EOs and reduces their burning time during the sampling period of the column electrodes.

Combined in two groups grid registors 11 are connected to the source; J. power supply and provide auxiliary current through the keys 9 and 10 alternately. The keys 9 and 10 are alternately connected using the first 4 frequency divider and two AND 7 and 8 logic elements. The input of the first 4 frequency divider to the high-order bus line of the scan code allows the trigger state to change after the completion of the image frame sweep and excite in adjacent frames the grid through 20 row electrodes.

The time of excitation of the discharge in the EO grid is determined by the shaper 6, which produces a pulse, the duration of which is determined by the time of formation of the discharge of the grid lines, and the beginning - by the moment of switching the next column electrode. Such switching of grid line groups and reduction of discharge burning time in the EO grid in each frame of the image sweep reduces the average brightness of the EO grid, which increases the contrast of the displayed information while increasing the reliability of the GUI,

Image scaling along the X coordinate in the device is performed as follows. The signal to the control input of the driver 6 pulses comes from the output of the second divider 5 frequency. At the entrance of the second

Frequency Divider 5 receives a low-order sweep code signal that determines the switching frequency of the column electrodes. The required scale in the X coordinate sets the division factor of the second frequency divider 5, the signal from the output of which increases the pulse duration of the driver 6, as a result of which the duration of the EO burning of the selected column increases, the duty cycle decreases and the brightness of these 30 grids increases. Therefore, the grid lines will be marked up with high-brightness display elements, and the placement of these elements will be set by the second frequency divider 5. The synchronization of the scanner and the second frequency divider 5 is carried out, for example, by setting the frequency divider to its original state with a high-resolution scan code.

Claims (2)

Invention Formula A device for displaying information comprising a horizontal bus sampling unit, the input of which is an information input of the device, and the outputs are connected to horizontal buses of the gas discharge display panel, the vertical tires of which are connected to the outputs of the scanner. the input of which is the control input of the device, the limiting elements of the first and second groups on the resistors, some of the outputs of which are connected to the corresponding horizontal buses of the gas-discharge indicator of the panel, are different in that, in order to increase the image contrast, a pulse shaper is inserted into it, the first and second elements are And, the first frequency divider, the first and second keys, and the other terminals of the resistors of the first and second groups are connected to the first and second keys, respectively nnye inputs are connected jc: a power bus, a control guides are connected to the outputs of the first and second AND gates, the first inputs of which are connected respectively to the forward and inversno-. The outputs of the first frequency divider, the counting input of the first frequency divider and the information input of the pulse former are connected to the control input of the device, the output of the pulse former is connected to the second inputs of the elements I. 2. A device according to claim 1, characterized in that the control input of the pulse driver is connected to its information input through a second frequency divider.