SU842932A1 - Device for displaying information on crt screen - Google Patents

Description

(54) DEVICE FOR DISPLAYING INFORMATION ON SCREEN OF ELECTRON BREAD TUBE

I

The invention relates to automation and computing and can be used in information display systems.

There are known devices for displaying information on a CRT screen, containing an input register, a binary counter of the number of points, a software sensor, diode keys for selecting characters, forcing deflection voltages in X and Y coordinates, waiting for a pulse generator, a micro-tact distributor, and high-power inverters uj.

The disadvantages of such devices are insufficient reliability in operation, which leads to a deterioration in the quality of the formation and display of information.

The closest to the present invention is a device comprising a nine-bit shift register, performing the functions of a micro-clock distributor, a nine-bit code register, a pulse generator.

the OR elements associated with the inputs of the corresponding formers in the X and Y coordinates, vy5: odes which are associated with a system of deviation of a CRT (not shown in the diagram),. the functional group of the elements AND-OR, the control area 2J.

The disadvantages of this device are the limited scope (the forms {{and it only displays numbers and a number of vectors oriented in the direction) and the accuracy of the displayed digital information is low.

The purpose of the invention is to expand the field of application of the device by increasing the range of displayed symbols and increasing the accuracy of displaying digital information by detecting all single errors in the illumination code and correcting the bulk of these errors, i.e. increasing the display of information.

This goal is achieved by the fact that a device containing a pulse generator, the code of which is the input of the device, and the output is connected to the input of the micro-tact distributor, the first output of which r is connected to the first inputs of the first and second elements. OR and the first voltage driver, the second output - with the second inputs of the first and second elements OR, the third output -. with the first input of the third element OR, the fourth and fifth outputs - with the first and second inputs of the fourth element OR, and the sixth output - with the second input of the third element OR, the output of which is connected to the second input of the first voltage driver, and the outputs of the second and fourth elements OR are connected to the inputs of the second voltage generator, the output of which is connected to a cathode ray tube (CRT) and a register, the first input of which is the device input, and the transducer is connected to the CRT modulator, a delay element is entered, the HE element is not igger, inverter, four keys, the fifth sixth and seventh OR elements and two AND elements, the first inputs of which are connected to the output of the pulse generator, the second input of the first element AND, and the first input of the fifth element OR are connected to the sixth output of the micro-tact distributor, the fifth the output of which is connected to the second input of the fifth element OR, the third and fourth inputs of which are connected to the outputs of the second and third elements OR, respectively, the output of the fifth element OR is connected to the second input of the second element AND, the output of which is connected to the second the input of the register, the output of the first element OR is connected to the first input of the first key and through the element NOT to the first input of the second key, and the output of the first voltage driver is connected to the second input of the second key and through the delay element to the second input of the first key, the outputs of the first and the second keys are connected to the inputs of the sixth OR element, the output of which is connected to the first input of the third key and through the inverter to the first input of the fourth key, the second inputs of the third and fourth keys are connected to the trigger outputs, which input It is connected to the output of the first element AND, the outputs of the third and fourth keys are connected to the inputs of the seventh element OR, the output of which is connected to a CRT.

FIG. 1 shows a functional diagram of the device; in fig. 2 a generalized polygram shape (consists of nine functional elements ensuring the formation of all numbers with increased reliability and almost all letters of the Russian alphabet and a number of symbols) 5 FIG. 3 - diagrams of deflection stresses required to form a polygram; in fig. 4 digits formed from a formed yoligram and characterized by an increased reliability of display.

The device contains 1 pulse generator, 2 micro-tact distributor, 3 and 4 voltage formers, elements OR 5-11, elements AND 12 and 13, element 14, trigger with counting input 15, keys 16-19, inverter 20, virgins a type receiving register 21 with a symbol code bus, an electron tube 22 with X23, Y24 coordinate systems and a modulator 25, a delay element 26, a symbol code bus, Start bus 28, and Display end 29.

Pulse generator 1 generates a sequence of pulses with a follow-up period equal to

The micro-tact distributor contains six outputs and operates in such a way that with the arrival of the first pulse from the output, the generator of the I pulses is removed only from its first output, with the arrival of the second pulse, the high potential is removed only from its second output, etc. Since the form of the pulse following pulse is equal to, then the duration of micro-tact is equal to Co. The cycle of operation of the distributor of 1 micro-tact is equal to six micro-strikes. .

there.

Claims (2)

The formed polygram contains twelve equal in duration (T formation of elements. It is formed in two cycles of the distributor of 2 micro-tacts. However, only nine functional elements {(elements a and E) are involved in the formation of the symbols). nine binary bits (the code stores with in the receive register 21). The fourth and ninth elements of the polygrams are formed in 2iQ time. The control of the illumination of these elements is a gram (depending on the code stored in the corresponding bit register 21, must also be carried out during time 2 CQ. This is ensured by the fact that the shift pulses from the output of the generator 1 are fed to the dynamic input register 21 through the element AND 13, the other input of which through the elements OR 9, 7 and 6 is associated with certain the outputs of the distributor 2 microstates. C. In order to ensure the pulse through the elements 13 and 12, depending on the state of the distributor 2 microacts, the input of the distributor 2 microacts is delayed by the response time of the element I. Elements a, b, d, I of the polygramhave areas oriented in space in different ways, each of which is formed in a time of 0.5 Cp. In order to ensure the formation of necessary deflection functions for these elements of polygrams, we introduce a delay element 26 with a constant delay τ, 0.5 C element NOT 14, keys 16 and 17, associated with the RSHI element 10} the output of the imaging unit 3 is connected with the key b directly, and with the key 17 via the delay element 26. Shaper 3 is controlled by signals from the distributor 2 micro-clock output in such a way that to form the first two elements of the polygram, it is sufficient that the voltage from the output of shaper 3 to the deflection system is removed through delay element 26 only at the first two cycles operation of the distributor 2 micro-tacts. For this purpose, the second input of the key 17 is connected with the first and second outputs of the distributor 2 micro-tacts through the element OR 5 ,. and the output of the element OR 5, in addition, is connected with another input of the key 16, the black element NOT 14. The order of forming the elements of the program is chosen as such and the signals from the outputs of the distributor 2 micro-shta through the elements OR 6-8 of the control 32 .6 3 and 4 voltages in such a way that for the first cycle of operation of the distributor of 2 micro-tacts, the first part of the polygram elements (elements with a to) is formed. To form the second part of the polygram (elements from the sixth to the tenth in coordinate Y, the same deflection voltages are required as in the first cycle of the distributor 2 ffliKpOTBKTOB, and the coordinate X is inverted voltages. Therefore, the output of the former 4 is directly connected to the input the system deviates from the Y coordinate 24. In order to invert the voltage from the output of the element OR 10, a trigger with a counting input 15 controlled by pulses through the element 12, inverter 20, keys 18–19, connected with the element OR 11. The output of the element OR 10 is connected with one input of the key 18 directly, and with one input of the key 19 through an inverter 20. The other inputs of these keys are connected respectively to the zero and one trigger outputs of the trigger 15. The single output of the trigger 15, except In addition, in the initial state, none of the outputs of the micro-tact distributor 2 is activated}, the trigger 15 is in the state O, which corresponds to the operation of the device on its first cycle. The device operates as follows. The Loop signal is started via bus 28, the symbol code is entered into a nine-bit shift register 21 by the 27-code symbol's length. A pulse generator is triggered on the same signal. The first pulse from the output of the generator 1 does not pass through the element I 13, since the input of the distributor 2 micro-tacts is delayed. From the first output of the micro-clock distributor, the potential acts on the summing input of the imaging unit 3 directly, and on the summing input of the imaging device 4 through the RShI element 7. The output of the imaging device 4 relieves the voltage required to form the first element of the polygram that goes directly to the deflection system. along the y24 co-ordinate of the 22. from the shaper 3 output, the same voltage as that of the shaper 4 is removed at the first operation cycle of the device (in Fig. 3 it is indicated by a dotted line). In the first cycle of operation of the distributor 2, the key 17 is open, and the key 16 is closed, the trigger 15j being in the state O ensures the state of the device in which the key 18 is open and the key 19 is closed. Thus, from the output, the shaper 3 voltage delayed by the OjSCp time passes to the deflection system along the X23 coordinate of the ELT22 circuit: delay element 26 — key 17 — element OR 1 key 18 — element OR 11. This ensures the formation of the first element of the polygram , On the second cycle of operation of the distributor of 2 micro-tacts, the device works in the same way as on the first cycle. The difference is that the second pulse, the passage through the element And 13 shifts by one bit in register 21, thereby connecting to the modulator the contents of the second bit of register 21. This ensures the formation of the second element of the polygram. With the arrival of the third pulse from the output of the generator 1, the register 21 is shifted by one more time in a row, and the valve distributor 2 micro-tact goes into the corresponding state. This leads to the state of the device in which the key 1.6 opens and the key 17 closes. In this case, the voltage from the output of the imaging unit 3 is fed to the deviation system along the coordinate X23 ELT22 by the min element 26 of the delay. On subsequent cycles of operation of the distributor 2 micro-strokes, the operation of the device is similar to the work on its third cycle. The difference is that the outputs of the formers 3 and 4 relieve the voltage of another form necessary for the corresponding elements of the polygram, and also that the fifth pulse from the output of the generator 1 does not pass through the element 13, which provides modulation control The CRT beam 22 contains the contents of the fourth bit of register 21, M, during the formation time of the fourth element, i.e. during the time 2 p, the Seventh pulse from the output of the generator 1 through the element And 13 shifts the register 21 by one more bit and, passing through the element 12, switches the trigger with the counting input 15 to the unit state. This corresponds to the fact that the key 18 is closed and the key 19 is opened. The second cycle of the device operation begins. On the second cycle, the operation of the device is similar to the operation on the first cycle. The difference is that the voltage from the output of the element OR 10 enters the deflection system along the X23 coordinate through the inverter 20 and the key 19. The deflection system along the Y24 coordinate receives the same form voltage as in the first cycle of the device operation. This ensures the formation of elements of the polygram from the sixth to the tenth. By . the completion of the formation of the last element forming the closed contour of the polygram, i.e. with the arrival of the thirteenth pulse from the output of generator 1, trigger-15 transitions from state 1 to state O. At this time, the output pulse of a symbol is generated at the single output of trigger 15, which prepares a device for generating a new symbol on bus 29 for a new familiarity. Thus, for two cycles of operation of the distributor 2 micro-tacts, i.e. during the time 12f g, at the output of the former 4 and the element OR 11, the voltages necessary for the formation of a generalized polygram shape are formed. From this figure, in accordance with the entire nine-zirconia illumination code entering the CRT modulator 25 from the register 21 output, it is possible to form characters of a much larger nomenclature than in the known device (almost the entire alphanumeric alphabet and p These symbols). The hardware and information costs for the formation of symbols are almost the same as in the known device (for generating symbols, the nine-digit code is also used here), and the time costs are not significant. Thus, the expansion of the field of application of the device is obvious. When using the proposed device (as well as the known one) only for displaying digital information, the accuracy of reproduction of information is significantly increased. This is ensured by the fact that the digital alphabet formed from the formed polygram has the property of detecting all single highlights of errors, COMPOSITION 51 3 not included in the contour of their elements. the symbol, and the fact that elements included in the outline of the symbol for any reason are not highlighted. Such errors do not lead (as in the known device) to the transformation of one character into another. In addition, in most cases, the operator can uniquely determine which character is displayed, despite the presence of a single error K11; At the same time, the structure of digital symbols meets the general ergonomic requirements (GOST 21837-76). Thus, in the proposed device, the reliability of the display of information is improved. In addition, a micro-tact distributor with six outputs is used to form a polygram containing 12 equal elements. device with nine outputs), which additionally simplifies the device and increases its reliability. Formula of the Invention A device for displaying information on a screen of a cathode ray tube, comprising a pulse generator, the input of which is the input of the device, and the output is connected to the input of the micro-tact distributor, the first output of which is connected to the first inputs of the first and second OR elements and the first driver the second output is with the second inputs of the first and second elements OR, the third output is with the first input of the third element OR, the fourth and fifth inputs are with the first and second inputs of the fourth element OR, and second output - to a second WMOs HOUSE third OR gate, the output of which poklyuchen to the second input of the first voltage, and the outputs of the second and fourth OR elements are connected to inputs of the second voltage shaper, the output Ko. Secondly, it is connected to a cathode-ray tube (ELG), and a register, the first input of which is the device input, and the output is connected to a CRT modulator, characterized in that, in order to increase the accuracy of the information display, a delay element inverter four key; the fifth, sixth and seventh OR elements and two AND elements, the first inputs of which are connected to the outputs of the pulse generator, the second input of the first element AND and the first input of the fifth element OR are connected to the sixth output of the micro-tact distributor, the fifth output of which is connected to the second output The nth element OR, the third and the fourth. whose inputs are connected to the outputs of the second and third elements OR, respectively, the output of the fifth element OR is connected to the second input of the second element AND, the output of which is connected to the second input of the register, the output of the first element OR is connected to the first input of the first key and through the element NOT to the first input of the second key, and the output of the first voltage driver is connected to the second input of the second key and through the delay element to the second input of the first key, the outputs of the first and second keys are connected to the inputs of the sixth OR element the output of which is connected to the first input of the third key and through the inverter to the first input of the fourth key, the second inputs of the third and fourth keys are connected to the trigger outputs, the input of which is connected to the output of the first And element, the outputs of the third and fourth keys are connected to the inputs the seventh OR element, the output of which is associated with a CRT. Sources of information, rintye taken into account in the examination 1. The author's certificate of the USSR 651337, cl. G 06 K 15/20, 1979. 2.Govorov B.C. Display of machine-based solutions on CRT screens. M., Soviet Radio, 1975, p. 138140 ..