SU1226520A1 - Device for controlling gaseuos-discharge display panel - Google Patents

Abstract

The invention relates to the field of automation and computing. and can be used in devices for displaying information built on AC discharge panels. The purpose of the invention is to increase speed. For this purpose, a second block, a memory block, an EXCLUSIVE OR element, and a trigger are entered into the device. This device allows B to increase several times the volume of the sign information displayed on the screen of the AC discharge panel by element-by-element analysis of the state of the indicator cells and erasing or recording only moving image elements. 1 il. with (L with:

Description

The invention relates to automation and computer technology and can be used in devices for displaying information built on AC discharge panels.

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

The device contains a pulse generator 1, an element OR-NOT 2, a counter 3 horizontal pulses, a counter 4 vertical pulses, the first memory block 5, the second memory block 6, character generator 7, the element 8 EXCLUSIVE OR, trigger 9, block 10 :. write / erase pulses, outputs 11 and 12 of the control of the polarization of a point on the panel screen, the outputs of the write / erase control, information input 13 of the device.

The device works as follows.

Suppose that the second output of the trigger 9 is in the state of logical O. The element OR is NOT open at the second input and the pulses from the generator 1 are fed to a horizontal counter 3, which produces input pulses for the vertical counter A, and the full miscalculation cycle counter 3 horizontal scan corresponds to the addition of units in the counter 4 vertical scan. The address for accessing the first memory block 5 is determined by the state of the counters 3 and 4, and the address for the character generator 7 is determined by the character code read from the first memory block 5, and the state of the counters 3 and 4. The signal generator 7 is an interpol torus with a serial output, the input information for which is the coordinates of the control points and the sign of the symbol (sign, vector, arc, circle, etc.). A two-input element, EXCLUSIVE OR 8, compares the output information of the character generator 7 with the output information of the second unit 10, which is a real-time memory, which stores information about the state of each element of the gas discharge panel recorded in the previous recording cycle. If the output states of the character generator 7 and the second memory block 6 are different, then the EXCLUSIVE OR 8 element is generated

em mismatch signal, its output goes to the state of logical 1. The leading edge of the mismatch signal from the output of the element is EXCLUSIVE OR

Trigger 9 switches to the second output of which goes to the logical 1 state, prohibits the passage of pulses from the pulse generator 1 through the OR-NOT 2 element to the horizontal counter 3, and simultaneously enables the write / erase pulses forming unit 10. The first trigger output is inverse to the second, it

generates a command to write to the second memory block 6 the signal values present at that moment at the output of the character generator 7. The write / erase pulses shaping unit 10, synchronized by the pulse generator 1, based on the information received from the output of the signal generator 7, is output; signals that record or erase a point whose address is indicated by counters 3 and 4.

After that, the first output of the write / erase master unit enters the state of logical 1 and switches the trigger 9 to the initial state. If the element TAKERLINE OR does not produce a mismatch signal, the device operates at a frequency f defined by the pulse generator 1.

The use of the proposed device allows several times to increase the amount of character information that is displayed on the screen of the AC discharge panel by element-by-element analysis of the state of the indicator cells and erasing or recording only moving image elements. This makes it possible to increase the speed of devices that use 1x as an image device of an AC gas discharge panel, operating on the principle of sequential recording of information.

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Claims (1)

Invention Formula A device for controlling the gas-discharge indicator panel, containing a pulse generator, successively connected 55 E horizontal pulse pulses and a vertical scan pulse counter, a first memory block, the output of which is connected to the first input of the character generator, horizontal pulse and vertical pulse outputs are connected to the first and the second inputs of the first memory block and the second and third inputs of the character generator, the element OR NOT, the write / erase pulses, the first input of which is It is connected to the output of the pulse generator, and the second input is connected to the output the character generator, the outputs of horizontal and vertical scanning counters are outputs controlling the position of a point on the gas discharge display panel screen, the input of the first memory block is an information input of the device, characterized in that, in order to improve speed, a second memory block is inserted into it , EXCLUSIVE OR element, trigger, first input, which is connected to the first code of the write pulse eraser / 12/3 block Editor O. Bugir Compiled by A, Kuliev Tehred I.Popovich Proofreader S. Shekmar Order 2139/52 Circulation 455 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 5 th 265204 No, the second input is with the output of the EXCLUSIVE SHS element, the first output of the trigger is connected to the first input of the second memory block, the second and third inputs of which are connected to the outputs of the pulse counters of horizontal and vertical scanning, the output of the second memory block is connected to the first input of the EXCLUSIVE element OR, the second input of which and the fourth input of the second memory block are connected to the output of the character generator, the output of the pulse generator is connected to the first input of the OR-NOT element, the second output of the trigger is connected to the third input of the form unit To write / erase pulses and the second input of an OR-NOT element, the output of which is connected to the input of a horizontal pulse counter, the second and third outputs of the recording pulse shaping unit / s of the tyranny are the outputs of the write / erase control. 15 20