SU1068980A2 - Device for displaying information - Google Patents

Description

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o The invention relates to automation and computer technology and can be used in the development of information display devices, for example, on a cathode ray tube. According to the main auth. No. 868822, a device comprising a serially connected pulse generator, a driver, a memory unit, a micro-register and a functional voltage generator, a logic unit whose inputs are connected to the driver and a memory unit, and the output is connected to an address counter, a code-time converter, connected to a pulse generator, register of micro-commands, forming-. a telemetry and an address counter, a driver connected to a functional voltage generator, a unit for beam light, a code code register and a serially connected comparison unit, a trigger and a 2I-ILY element connected to a beam illumination unit, and a multivibrator whose output is connected to a 2I element- OR, the output of the register of characters is connected to the logical block, the inputs of the comparison block are connected to the driver and the output of the memory block, the driver is connected to the character register, the code-time converter and the trigger, the output of the micro register commands are connected to element 2I-OR, and the trigger output is connected to the beam illumination unit. In the device, the control is performed by comparing the input code of each character with the control code of that character recorded in the memory block directly by the microprogram of the given character) lj. However, the known device is characterized by insufficient reliability due to the lack of control of the reliability of the symbol firmware. The aim of the invention is to increase the reliability of the device by monitoring the symbol construction program. The goal is achieved by introducing an adder switch and a sum register into the device, the output of which is connected to one of the inputs of the adder, the other input of which is connected to the output of the memory block. and the first input of the switch, the second input of which is the first input of the device, and the output is connected to one of the inputs of the character code register, the output of the adder is connected to the vessel from the inputs of the comparison unit and to the first input By registering the sum register, the second input of which is connected to the output of the code-time converter transformer, the third input of the sum register is the second input of the device, the third input of the switch is the third input of the device. The drawing shows the proposed device. The device contains a pulse generator 1, a pulse driver 2, a memory block 3, an address counter 4, a logic unit 5, a code-time converter b, a micro-command register 7, a function voltage generator 8, a beam illumination unit 9, a symbol code register 10, a block 11 comparisons, first trigger 12, logic element 2I-OR 13, multivibrator 14, logic element 15, second trigger 16, block 17 for changing the character size, switch 18, adder 19 .., sum register 20, device inputs 21-23, inputs and outputs 24-36 of the respective device blocks, outputs 37-39 devices -keeping. the inputs and outputs 40-47 of the respective units of the device. The device works as follows. A device setup impulse is sent to the device input 22 in the initial state. Then, under the action of a synchronization pulse input to the device input 21, the pulse generator 1 generates a sequence of pulses at the output 24, which arrives at the pulse generator 2 inputs and the converter 6 10 character code on the recording signal coming from the output 25 of the driver 2 pulses. According to the signal from the output 26 of the driver of the 2 pulses, the character code enters through the logic unit 5 to the information inputs of the address 4 counter and is written into it by the signal from the output 27 of the driver of the 2 pulses. The output number from the output 28 of the counter 4 addresses goes to the address inputs of the memory block 3. At the same time, the pulse former 2 generates, at output 29, the first interrogation signal of the memory unit 3. At the output 30 of the memory block 3, the address of the first word of the microprogram of the character is formed, the actions through the logic block 5 according to the signal from the output 31 of the driver 2 pulses to the information inputs of the counter 4 addresses. Information is written to the counter by a signal from the output 27 of the driver of 2 pulses. From this moment, the address counter 4 is transferred to the sequential polling mode of the cells of the memory block 3 by counting pulses, arriving at the address counter 4 from the output. 32 converters 6 code-time i At this, information from the output 30 of the 3 memory is read The polling signal from the output 29 of the driver 2 pulses. Information is cleared at output 30 of memory block 3 by the reset signal from output 33 of the driver 2 pulses.

The first word of the firmware of the symbol at the output 30 of the memory block 3 is the control code of the symbol, which through the adder 19 enters the input of the comparison block 11. Where during the operation of the first comparison signal from the output 34 of the driver, 2 pulses are compared with the character code received from exit 35 of register 10 character code.

The second word of the symbol firmware is a multi-bit number equal to the sum of the vector codes of this symbol. This number through the switch 18 is written to the character code register 10 by the second recording signal received from the output 25 of the driver 2 and is stored in it until the end of the character generation .

The third and all subsequent words formed at the output 30 of the memory block 3 contain information about the slope, length and resolution of the highlight of the first and all subsequent vectors constituting the outline of the symbol. The third word (the code of the first vector) on the front of the pulse from the output 32 of the code-time converter b is recorded in the reg-source of 7 micro-commands, which controls the generator 8 of the functional voltages and through the logic element 2I-OR 13 by the beam illumination unit 9. At the same time, at the output 36 of the driver 2 pulses, a level attachment pulse is generated, which acts on the first input of the generator 8 of functional voltages until the end of the symbol. At outputs 37 and 38 devices, varying -BELT time deflection voltages are generated along axes x and y, respectively, and at output 39, a beam illumination signal. By decreasing the same pulse of output 32 of converter 6, the code time state at output 28 of address counter 4 changes by one, at output 30 of memory block 3, a fourth word is formed (code of the second vector), which follows the leading edge of the next pulse at the end of the formation of the first vector output 32: code-time transducer 6 is written to micro-command register 7. The transducer determines the length of the vector; the code-vretl 6 controls the time code from output 30 of memory block 3. The time limit of the formation of a century is fixed by a pulse at the output 32 of the code-time converter 6, by decreasing which the status of the address 4 counter changes by one, 4to causes the formation of the code of the next vector at the output 30 of the block; 3 memory.

The formation of the remaining vectors constituting the contour of the symbol is similar.

The last word of the symbol firmware containing zeroes in all bits comes from the output 30 of the memory block 3 to the third input of the driver 2 pulses, which at the output 40 outputs the signal of the end of the symbol, under the action of which the generator 1 pulses, the converter 6 code-time The character code register 10, the triggers 12 and 16 are set to the zero state, which ensures the device is ready to form the next character.

The code of the first vector from the output 30 of the memory block 3 is also fed to the first input of the adder 19 and, adding to zero (in the initial state) code from the output 41 of the register 20

0 sum, is at the output 42 of the adder 19. On the pulse front end of the vector from the output 32 of the transducer 6 code-time, this code is written to the sum register 20. By the decay of this same pulse, the first input of the adder 19 receives from the memory block 3 the code of the second vector and is summed with the code of the first vector arriving at the second input of the adder 19 from the output 41 of the sum register 20. At the output of the summator 42, a sum of the two vector codes is generated, which, according to the pulse of the end of the second vector, is written to the sum register 20. Ta5 KIM way, the code of each vector

is summed in adder 19 with the sum of the codes of the previous vectors. On the character generation window, the pulse shaper 2 generates a second comparison pulse, under which in the comparison block 11, the sum of the codes of all the vectors from the output 42 of the adder 19 is compared with the checksum from the output 35 of the character code register.

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If the input code of the symbol does not match the control code of the symbol (the first word of the microprogram of the symbol) or the checksum (the second word of the microprogram of the symbol) with the sum of the vector codes. Under the action of the first or second comparison signal from the output 34 of the driver, 2 pulses of the comparison 11 form the output 43 alarm

 under the action of which the trigger 12 is transferred to a single state. At the same time, at the output 44 of the trigger 12 a zero voltage level is set, and at the output 45 - a positive one, which is fed to the input of the element 2И-OR 13 and the beam illumination unit 9. During the positive periods of operation of the self-oscillating multivibrator 14 (the frequency generated by it.

5 pulses of the order of units Hertz) Element 2I-ILY 13 passes the illumination code of the symbol vectors to the second input of the beam illumination unit 9, the first input of which from the output 45 of the trigger 12 receives a positive level, which additionally increases. the amplitude of the output voltage of the backlight unit 9. In zero periods of operation of the multivibrator 14, the logic element 2I-OR 13 does not pass the illumination code to the second input of the beam illumination unit 9. As a result, the symbol on the CRT screen is displayed with increased brightness and flashing, determined by the frequency of operation of the multivibrator 14.

At the same time, positive voltage levels from trigger 12 and multivibrator 14 are fed to two inputs of an element 15, the third input of which receives a signal from output 32 of converter 6 code-time. At the output of the element 15, a trigger 16 is triggered, from output 46 of which a positive level is applied to change the size of the symbol at 17, which leads to a sharp change in the output voltage of the outgoing voltage 37 and 38 of the device. During zero periods of operation of the multivibrator 14 The signal from the output 32 of the converter b code-time does not pass to the output 47 of the logic element AND 16, the trigger 16 does not start, the block 17 of changing the size of the symbol does not affect the amplitudes of the deflecting voltages at the outputs 37 and 38 of the device . Consequently, a symbol is displayed on a CRT screen, the dimensions of which change in time with the vibrations of the multivibrator 14.

Thus, if the codes at the inputs of the comparator block 11 do not match, the characters on the CRT screen are displayed with increased brightness, flashing and varying sizes.

The technical and economic efficiency of the invention consists in increasing the reliability of the displayed information due to the control of both the masses of the initial addresses and the array of microprograms of characters, i.e. about 90% of the memory capacity.

Claims (1)

DEVICE FOR DISPLAYING INFORMATION ’by ed. No. 868822, which means that, in order to increase the reliability of the device due to the control of the character construction program, a switch / adder and a register are entered into it, the output of which is connected to one of the inputs of the adder, the other whose input is connected to the output of the memory block and the first input of the switch, the second input of which is the first input of the device, and the output is connected to one of the inputs of the symbol code register, the adder output is connected to one of the inputs of the comparison unit and to the first input of the sum register, the second input of which connected to the output of the code converter-time, the third input is the sum of the second input register unit, the third input of the switch is the third input device.