SU942124A1 - Information display - Google Patents

Description

one

The invention relates to automation and computer technology and is intended to display character information on a gas discharge display panel.

A device for displaying sign information on a gas discharge display panel, containing a gas discharge display panel connected with vertical and horizontal tire control keys, and a buffer storage device connected to. horizontal tire control keys. a row distributor and a character generator connected to the fragment distributor and a random access memory 5 device connected to the input console, an interface unit and a control circuit connected to the clock generator connected to the distributor .20

In this device, the glow of the gas-discharge cells of the panel is observed due to the fact that it had, from the time it took to write to the buffer memory, the codes, Jarmen of the upper and lower lines.

Closest to the present invention is a device in which an additional shift register is introduced to optimize the luminance brightness of gas discharge cells in the device for displaying information. In the shift register during the indication of the previous fragments, the codes of the fragments reproduced when the next bus is connected are sequentially recorded. When the next bus is connected, the contents of the register with the parallel code are copied to the memory register, which ensures the uniform luminescence of the cells located. in one shin 2 J,

However, the introduction of the shift register complicates the device as a whole.

The purpose of the invention is to simplify the device.

The delivered target is reached because of the fact that the device for displaying

containing, in series, 39, a connected code converter, a memory unit, a character generator register and a key block whose outputs are connected to horizontal panels buses, the vertical buses of which are connected to the outputs of the second key block connected to the pulse distributor, the control and timing unit whose outputs are connected with a code converter, a memory block, a number of lines counter and a fragment number counter, the output of which is connected to the second input of the memory block, the inputs of the pulse distributor and the counter h fragments connected to the second input of the distributor and the third input of the memory unit, the output of the row number counter connected to the third input of the memory unit and the second input of the register and power bus, contains two additional keys, the OR element and the trigger, the first input of which is connected to the output of the control and clocking unit, and the second input - with the output counting the number of rows, the trigger output is connected to the inputs of the additional switch, the output of the first key is connected to the second input of the first key block, the output of the second key is connected to the input of the OR element, the second input of which is connected to the first power bus, the output of the OR element is connected to the third input of the key block, the second input of the second additional key is connected to the second power bus. In order to ensure uniform luminance of gas-discharge cells located in one bus, it is proposed to write fragment codes to the memory register sequentially, and the horizontal bus key control circuit to disconnect — and at this time to apply the keys to half the voltage of the driver. The excitation of the excitation voltage is necessary to restore the penetration strength of the cells, which eliminates a false transition to the conducting state of the previously conducting cells from the half-voltage (Ot / 2), in known devices this is achieved by resetting the memory register (buffer memory) . Time off voltage U t. should exceed the deionized time, having a duration of tens of microseconds. The drawing shows the functional scheme of the device. The device contains sequentially connected code conversion block 1, 244 memory block 2, character generator 3, register 4, first key block 5 and gas-discharge display panel 6, second key block 7 connected to. a distributor of 8 pulses, a counter 9 of familiarity number, a control and clocking block 10, a counter 11 of the number of rows, a counter 12 of the number of fragments, a trigger 13, the first auxiliary key 14, a second auxiliary key 15, the OR element 16. The device works as follows. I The information input to the device through the code conversion unit 1 is recorded in the memory unit 2. In accordance with the state of the counter 12, the number of fragments and the counter 8, the familiarity signal has a signal at the jth output of the distributor 8 pulses and through one of the keys of the block 7j a vertical bus of the discharge display panel 6 is connected to the common wire. Register 4 records the codes of the fragments of the jth vertical column. Trig P is in the single state, the signal from its output is additional “- and 15 are open, i.e. the keys of the block 5 are connected to the common wire through the first key 14, and through the element 16 and the second key 15 to them is fed arousal of Ug. In accordance with the code recorded in register 4, the voltage Ugo, via the keys of unit 5, enters the gas discharge display panel of the j-th column of panel 6 and reproduces fragments of characters. With the arrival of the next pulse from the control and clocking unit 1O, the counter 12 of the number of fragments enters the next state, a signal appears on the j + 1 output of the distributor 8 and a vertical bus of the gas discharge display panel is connected to the common bus via the keys of the 7 j + 1 unit 6. The trigger 13 is set to the zero state and | Shyuchi 14 and 15 are closed. Through the key 14, the key control circuit of the block 5 is opened, and the voltage Wthc / 2 is supplied to them through the OR 16 element. This leads to the fact that the voltage Ubo3 / 2 is applied to all horizontal tires of the gas discharge shadikator panel 6. The voltage applied to the previously conducting cells of the jth vertical column is zero, which leads to a rapid restoration of the penetration strength of these cells. - To cells + 1 vertical bus, voltage Uth / 2 is applied,

that dp is not enough to translate them into conductive.

Claims (2)

By a signal from the control and clocking unit 1O, the counter 11 of the number of rows goes to the state corresponding to the address of the first row. In accordance with the signals from the counter 11, the number of lines and the counter 9, the familiarity number from the output of the operative memory device 2 receives a sign code to the character generator 3, where it is converted into a code of the fragment, corresponding to the state of the counter 12, the number of fragments. The code of the fragment from the character generator 4 is written to the address from the counter 11 of the number of lines in register 4. Then the counter of the address goes to the next state and the code of the fragment of the second line is recorded in register 4, and so on. After writing to the register 4 of the code of the fragment of the last page, trigger 13 the number of rows is transferred by the counter signal 11 to the unit state and the keys 14 and 15 are opened. Through the key 14, the control circuit is closed. the keys of the unit 5, and through the key 15 and the OR element 16, the keys O are applied to the keys 5 to transition to conductive - state In accordance with the code recorded in register 4, cells in the j + 1 column of the gas-dispersed display panel 6. The process of converting the state of cells in other vertical tires to a wire is similar. In connection with the simplification of the proposed device, the cost of its creation is reduced, which is due to the significantly lower costs for the components, installation and configuration of the trigger, two keys and the OR element compared to the similar 3ai per shift register. Claims An apparatus for displaying information comprising a serial connection code converter, memory block, character generator, register and key block whose outputs are connected to horizontal panel buses, vertical tires of which are connected to the outputs of the second key block connected to the pulse distributor, control and tachometer blocks whose outputs are connected to the converter codes, a memory block, a row count counter and a fragment count counter, the output of which is connected to the second input of the memory block, the inputs of the pulse distributor and the fragment number counter connected to the second the input, the distributor and the third input of the memory block; 1 the output of the row number counter is connected to the third input of the memory block and the second input of the register and power supply, which is different from the fact that, to simplify the device, it contains two additional keys, the OR element and the trigger, the first input of which is connected to the output of the control and clocking unit, and the second input to the output of the row number counter, the output of the trigger is connected to the inputs of additional keys, the output of the first key is connected to the second input of the key block, the output of the second key soediyen to the first input of the OR gate, the second input of which is connected to the first power supply bus, an output of OR is connected to the third input key unit, the second input of the second additional switch is connected to the second power bus. Sources of information taken into account during the examination 1. Lavrentiev S.I., Svizov A.A., Smolrov A.M. The device for displaying sign information on gas discharge indicator panels. Instruments and control systems, 1979, No. 12. p. 26-27. 2. USSR author's certificate number 485477, cl. G09G 3/28, 1974 (prototype);