SU978187A1 - Data display device - Google Patents

Description

The invention relates to automation and computing and is intended to display character information on matrix indicators.

A device for displaying information, comprising a series-connected gas-discharge display panel, horizontal bus keys, buffer memories, a character generator, a synchronizer, random access memory, decoder counters, and a matrix diode with ill-keys.

The disadvantage of the device is the limited performance due to the sequential conversion in the operational memory-i device and the generator of code characters to the character code.

It is also known a device for displaying information containing a day gas o-indicator panel, keys for controlling vertical tires connected to a distributor, keys for controlling horizontal tires connected to a memory register connected to the buffer register, a character generator random access memory, counter

rows, control and clocking block and input block.

The performance of the known device is also limited due to the subsequent. conversion of the character code to the character code in the RAM memory and the character generator.

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

For this purpose, it is proposed to simultaneously read the information from the random access memory and convert the character code to

15 character code. Moreover, the sign code of the i-th row is converted into the 1st time interval in the character generator, and the sign code displayed on the operative backup of the 1st device is read

20 in (1 + 1) -and line. The character code of the 1st line is stored in a register enabled between the random access memory and the character generator.

The goal is achieved by

25 that in the device, containing first and second registers connected in series and the first group of keys, the outputs of which are connected to horizontal tires of the display panel, the vertical buses of which are connected to the outputs of keys of the second group, the inputs of which are connected to the outputs of the first and second counters g input unit whose output is connected to the first. the input of the memory unit, the second input of which is connected to the output of the first counter, the synchronization unit, the first teJJCOd of which is connected to the second input of the input unit and the third input of the memory unit, the third counter, the first output of which is connected to the second input of the second register and input the second counter, the output of which is connected to the first input of the generator; the first input of the input block is the input of the device; serially connected differentiating element, trigger and AND element, adder, third register and decoder are entered; The first is connected to the second input of the first register, the first input of the encoder is connected to the input code of the element I, the second input to the output of the third counter connected to the first input of the adder, the second input of which is connected to the output of the trigger, and the output to the fourth input of the block memory, the output of the synchronization unit is connected to the second inputs of the trigger, element And and the third register, the first input of which is connected to the output of the memory unit, and the output is connected to the second input of the character generator, the first output of the third counter is connected to the input of the differentiating element ement. In FIG. 1 shows a functional diagram of the device for displaying information; Fig 2 - timing charts of the device,. The device contains an input unit 1 connected by a memory unit 2 connected via a third register 3 to a 4 character generator, a decoder 5, successively connected to the first register 6, the second register 7, the first group of control keys for horizontal tires B and the gas discharge indicator panel 9, the second group of control keys for vertical tires 10, the second counter 11, the first counter (familiarity) 12, the adder 13, the synchronization unit 14, the differentiating element 15, the trigger 16, the element 17 and the third counter 18 lines. The device works as follows. The information input to the device through the input unit 1 is recorded in the memory unit 2.. The synchronization of the operation of the entire device is carried out by block 14 (Fig. 2). At time t, the 18 line counter is set I to its initial state (Fig. 26) and the signal from its turn in register 7 is overwritten with the fragment codes of characters (Fig. 2d) in register 7, and the fragment counter 11 Enters the next state . With the falling edge of the signal from the counter 18 lines, separated by the differentiating element 15 (Fig. 2c), the trigger 16 is set to the zero state (Fig. 2d). In memory block 2, from the output of the adder 13, the address code of the first row is received, from counter 12, the familiarity code, and from block 14, the read signal. After the time of the exit of the memory block 2, the code of the character reproduced in the k-m sign of the first line arrives. At time tj, the sign code is written to register 3 (Fig. 2e), and the trigger 16 is switched to one state (Fig. 2d). Since at time t. At the output of the element 17, the signal is zero (Fig. 2e), then the decoder 5 does not receive a gating signal (Fin. 2g). In this case, the state of the 18 row counter does not change. Since the adder 13 receives the signal of the logical unit from the trigger 16, then the block 2 ps1M ti receives the address of the second line. At this time, the character code written in register 3 is converted into a 4-character generator into a fragment code. At time t, the code of the sign of the second line in register 3 (Fig. 2e) and the fragment code from the 4 character generator in register 6 (Fig. 2g) are recorded at the address of the first line in accordance with the state of the counter 18 lines. Fragment codes of other lines of familiarity are written in the same way. The time interval -t must satisfy the condition l os -fcrii -, i.e. increase the maximum conversion time in a block of 2 memory or a 4-character generator. After the fragment codes of all the lines are written by the signal from the output of the line counter 18, the information from register 6 is rewritten to register 7, and counter 11 goes to the next state, thereby connecting the (3 + 1) -th vertical bus of the gas discharge indicator panel 9 to wire. In accordance with the code recorded in register 7, the driving voltage of the horizontal tires 8 is applied to the gas discharge display panel 9 and information is reproduced in the (j + l) -th vertical bus. The use of the proposed device improves its speed, which allows increasing the I / O time in each playback frame by reducing the time for converting information from the random access memory. At a given read time from the random access memory, the performance improvement allows the display panel to be used with a larger information capacity, since at the same time more number of characters are read and converted to the mark code.

Claims (1)

Invention Formula A device for displaying information comprising serially connected first and second registers to a first group of keys, which are connected to horizontal tires of the display panel, whose vertical tires are connected to the outputs of keys of the second group, whose inputs are connected to the outputs of the first and second counters, the input unit, the output of which is connected to the first input of the memory unit, the second input of which is connected to the output of the first counter, the synchronization unit, the first output of which is connected to the second input of the input unit and with the third input of the memory unit, the third counter, the first output of which is connected to the second input of the second register and the input of the second counter, the output of which is connected to the rtepBtw input of the character generator, the first input of the input unit is input to a device different so that, in order to increase the speed of the device, a differentiated element, a trigger and an And element, an adder, a third register and a decoder, the output of which is connected to the second input of the first register, are entered into it, the first input of the decoder is connected to the output of the And element, and the second input - with the second output of the third counter, 0 connected to the first care of the adder, the second input of which is connected to the trigger output, and the output to the fourth input of the memory unit, the output of the synchronization unit is connected to the second inputs of the trigger, the And source and the third register, the first input of which is connected to the output of the memory block and the output with the second input of the character generator., the first output of the third counter is connected to the input of the differentiating element. Sources of information, taken into account during the examination 1. Pokrovailo A.V., Samorodov V.G. 5 Gas discharge indicator AC panel without memory. Electronic technics, ser. 4, Electrovacuum and gas discharge devices, 1977, vol. 9g. 86-90. 2, USSR author's certificate 0 485477, k. G 09 G 3/28 1975. (prototype) I