SU807266A1 - Device for displaying information on crt screen - Google Patents

Description

Union of Soviet

Socialist

Republic (ί1) 807266

State Committee

USSR for inventions and discoveries

DESCRIPTION

Inventions

TO AUTHOR'S CERTIFICATE (61) Additional to author. certificate-wu- (22) 3April 16.10.78 (21) 2674685 / 18-24 with the addition of application No. - (23) Priority -

Published on February 23, 81. Bulletin No. 7

Date of publication of the description: 02.25.81 (51) M. CL * q 06 F 3/153 (53) UD Κ6Θ1.327.

.11 (088.8) (72) The inventors

A.V. Korolev L.S. Soroka (71) Applicant

(54) DEVICE FOR DISPLAYING INFORMATION ON THE ELECTRON BEAM SCREEN

PIPES

The invention relates to computer technology and can be used in computer output devices, in information display systems, in automation, instrumentation and automated control systems. ⁵

A device for displaying information on the screen of a cathode ray tube (CRT), comprising a pulse generator, a voltage driver, AND-AND OR fl] elements.

The disadvantage of this device is the limited functionality.

A device for displaying information on a CRT screen, comprising a pulse generator, a pulse distributor, AND and OR elements [2].

The disadvantage of this device is the large character formation time. _m

Closest to the technical nature of the proposed device is a device for displaying information on a CRT screen containing a pulse generator.

pulse distributor, voltage driver, register ,, counter, AND elements, OR elements, NOT element and delay element Гз] .._

The disadvantage of this device is the complexity of the hardware implementation due to the large number of logic elements and insufficiently high reliability due to the fact that the formation of deflecting voltages is performed once in the 'preparation' mode for one cycle of operation of the pulse distributor for the entire displayed information array.

The purpose of the invention is to simplify the device to increase reliability.

This goal is achieved by the fact that the output of the pulse generator is connected to the input of the pulse distributor, synchronizing the input of the shift register and the left input of the first element And, the second input of which is connected to the corresponding output of the pulse distributor, and the output to the counting input

SO7266 counter, the first output of the counter is connected to the first inputs of the second and third elements And, and the second output is connected to the first input of the fourth element And, the second input of which is connected directly to the first inputs of the fifth and sixth elements And, through the second input of the third element And the element is NOT connected to the output of the voltage driver, the first input of the voltage driver is connected to the first input of the first OR element and connected to the corresponding output of the pulse distributor, and the second input to the output of the second OR element, the first input of which is connected to the second input of the sixth element AND and is connected to the corresponding output of the pulse distributor, a. the second input is connected to the second input of the first OR element and connected to the corresponding output of the pulse distributor, the third input of the first OR element is connected to the corresponding output of the pulse distributor, and the output is connected to the second input of the fifth AND element, the output of which is connected through the delay element to the first input of the third OR element, the second input of which is connected to the output of the sixth AND element, and the output is to the first input of the electron beam deflecting system, the second input of the electron beam deflecting system CHB connected with the output of the fourth OR gate, whose inputs are connected to outputs of the third and fourth AND gates, the output of the shift register is coupled to the modulator cathode-ray tube, which deflection bias input is connected to the output of the second AND gate, the second input of which is the input device.

In FIG. 1 shows a functional diagram of the device; in FIG. 2 - diagrams of the necessary deflection stresses; in FIG. 3 - deflecting functions Χ (Ή and V (-t). Arriving at the deflecting system of the cathode ray tube.

The device comprises a register 1, a pulse distributor 2, a voltage generator 3, a counter 4, a pulse generator 5, a first element And 6, a second element And 7, a third element And 8, a fourth element And 9, a fifth element And 10, the sixth element And 11, first element OR 12, second element OR 13, third element OR 14, fourth element OR 15, element NOT 16, delay element 1.7, cathode ray tube with a deflecting system and a modulator.

Register 1 is used to receive and store a twenty-element character code. 5 The 2-pulse distributor works in such a way that under the action of a periodic sequence of pulses from the output of the 5-pulse generator, a pulse of duration (microtact) is sequentially generated at each of the outputs of the distributor. The outputs of the pulse distributor 2 (microtacts), in addition to the fourth output, are connected both directly and through the second element OR 13 to the corresponding inputs of the voltage shaper 3, from the output of which a voltage of a certain shape is removed (Fig. 2a).

The fifth and sixth elements And 10 and 11, 20 one delay cycle element 17 serve to convert the voltage from the output of the voltage shaper 3 into a voltage of a certain shape (Fig. 26), which through the third element OR 14 to 25 enters the first input of the CRT deflecting system 18 (along the X coordinate).

The two-digit counter 4, connected through the first element And 6 to the pulse generator 5, serves to count the cycles 30 of the operation of the pulse distributor 2 pulses (microtacts), to generate a signal end of the symbol, as well as to control the second, third and fourth elements And 7 - 9. On the second input of the fourth ₃₅ element And 9 receives voltage from the output of the voltage shaper 3 (Fig. 2A). The second inlet of the third element And 8 receives the voltage inverted by the element HE 16 (Fig. 2c). On the

The second input of element AND 7 receives the offset - dH ⁿ from the input of the device.

A similar figured micro-raster (polygram) is formed in the device. However, the order of formation of poly grams vyb- ^en P such that the first ten clock cycles (first and second cycles of the pulse 2 of the distributor (mikrotaktov) on the CRT deflection system 18 the coordinates X and Y voltages are delivered respectively from the output of the third OR gate 14 and the generator 3 pulses (FIG. 3). During the second ten cycles (third and fourth cycles of operation of the distributor mikrotaktov 2) on the deflecting sistemu'ELT (coordinate X) paet post ⁵⁵ as the voltage output from the third OR gate 14, and the bias voltage from -DH device input Twa through the second element And 7, and along the coordinate Y

807266 6 inverted voltage from the output of the voltage shaper 3 (Fig. 3).

The device operates as follows.

The signal ‘'start' starts the generator 5 pulses. Pulses of frequency £ arrive at the distributor of 2 pulses (microtacts) from five outputs of which are pulled consecutively pulses of duration -fc Q.

From the corresponding outputs of the microtact distributor 2, pulses of duration ΐρ are supplied to the inputs of the voltage shaper 3 in such a way that a certain form of voltage is formed at the output of the voltage shaper 3 during the cycle of operation of the 2 pulse pulser 2, that is, over a time of 5 φθ (Fig. 2a). In addition, the trapezoidal voltage generated during the first three clock strokes of the pulse distributor 2, through the fifth element And 10 enters the input of the single-ended delay element 17, since the second input of the element And 10 receives the resolving potential from the output of the first element OR 12. Delayed One cycle trapezoidal voltage is supplied to the first input of the third element OR 14. The second input of the third element OR 14 receives voltage from the output of the voltage shaper 3 through the sixth element And 11, formed on the fifth clock cycle you pulse distributor 2 (mikrotaktov). Thus, at the output of the third element OR 14, a deflecting voltage is formed (Fig. 26), which is fed to the first input of the deflecting system of the CRT 18 (along the X coordinate).

In the first cycle of operation of the pulse distributor 2 (microtacts), the two-bit counter 4 is in the zero state, therefore, the second input of the deflecting CRT system 18. (Along the coordinate Y) through the fourth element And 9, the fourth element OR 15 receives voltage directly from the output of the voltage shaper 3 (Fig. 2a). The sixth pulse from the output of the 5 pulse generator through the first AND 6 element changes the state of the counter 4 to '1', however, it does not change the operating mode of the device, since the second discharge of the counter 4 does not change its state ('01'). The device functions in the same way as in the first cycle of operation of the 2-pulse distributor (microtacts).

The eleventh pulse from the output of the 5-pulse generator puts the counter 4 in the state '10', that is, the state of the second discharge changes. The device goes into the third and fourth cycles of operation of the distributor of 2 microtacks — ₅ tovs in such a state that the deflector system CRT 18 (along the coordinate Y) from the output of the former 3 through the third element And 8 and the fourth element OR 15. Inverted voltage (Fig. . 2c). The CRT deflecting system 18 (along the X coordinate) in these two cycles from the device input through the second element And 7 receives the mixing voltage - ΔΧ, necessary for transferring the CRT beam <5 to the beginning of the formation of the eleventh element of the polygram ..

Thus, in four cycles of operation of the distributor of 2 pulses (micro. Cycles), the necessary deflecting functions X (i) and Y (-b) are formed, which are necessary for the formation of the polygram. Simultaneously with the formation of the elements of the polygram under the action of a periodic sequence of pulses with a frequency of 25 £ from the 5-pulse generator, the CRT modulator 18 receives the code of the displayed symbol from receiving register 1, according to which only those poly-ed frame elements that make up the outline of the displayed symbol are highlighted .

The first pulse from the generator 5 pulses, coming after the fourth cycle of the circuit, a pulse counter overflow 4, Ko tory ³⁵ prepares the device for generating a new symbol in a new familiarity.

The proposed device, in comparison with the known one, has similar functionalities — it generates and displays numbers, the Russian and Latin alphabets, a number of oriented vectors, mathematical signs and a number of conditional figures with a significant simplification of the circuit solution and increased reliability of the device. In the device, as well as in the well-known device for forming such a complex polygram, only one voltage driver is used, however, 5® at the same time the number of logic elements is almost halved, the control trigger is also excluded from the device, the bit capacity of the counter, pulse distributor (microtacts) and - 5S gis ^ ra.

In the known device, due to the formation of deflecting voltages • £ performed once in the under807266 mode, cooking 'for one additional cycle of the microtact distributor (6 · ^), for the entire displayed information array and the use of two three-stroke (SFR) delay elements connected in series with feedback , increases the possibility of disruption of synchronization, which reduces the reliability of the device.

In this device, in contrast to the known mode, the “preparation” mode is excluded, deflecting voltages are formed at each cycle of the microtact distributor (5), only a single delay element (ig) is used, which, together with a significant simplification of the circuit solution, provides a significant increase reliability of the device.

In addition, the proposed technical solution on each displayed symbol provides a time gain equal to 4 - t ₀ 4 * (rae Ψ - regeneration frequency), and a gain in the information description of four bits.

Claims (3)

38, the first output of the counter is connected to the first inputs of the second and third elements I, and the second output to the first input of the fourth element I, the second input of which is connected to the first inputs of the fifth and sixth elements I, directly, and to the second input rpei-b- its element is AND through the element NOT n connected to the output of the voltage driver, the first input of the voltage driver is connected to the first input of the first element OR and connected to the corresponding output of the pulse distributor, and the second input - from the output of the second element OR, n rvy input coupled to a second input of the sixth AND gate and connected to a suitable output distributor mu pulses as well. the second input is connected to the second input of the first element OR and is connected to the corresponding output of the pulse distributor, the third input of the first element OR is connected to the corresponding output of the pulse distributor, and the output is connected to the second input of the fifth element I, the output of which is through its delay element the OR element, the second input of which is connected to the output of the sixth element I, and the output to the first input of the deflection system of the electron-beam tube, the second input of the deflection system of the electron-beam t The slabs are connected to the output of the fourth OR element, whose inputs are connected to the outputs of the third and fourth AND elements, the output of the shift register is connected to a cathode ray tube modulator, the bias input of the deflection system of which is connected to the output of the second AND element, the second input is the input devices. FIG. 1 shows a functional diagram of the device; in fig. 2 - diagrams of the necessary deflection stresses; Fig. 3 shows the deflecting functions X () and Y {t-) 1 entering the deflection system of a cathode ray tube. The device contains a register 1, a distributor 2 pulses, a voltage former 3, a counter 4, a generator 5 pulses, the first element AND 6, the second element AND 7, the third element And 8, the fourth element And 9, the fifth element And 10, the sixth. Element AND 11, First Element OR 12, Second Element OR 13, Third Element OR 14, Fourth Element OR 15, Element 16, Delay Element 1.7, Electron Beam Tube 6 18 with a deflection system and module. Register 1 is used to receive and store a twenty-element character code. The pulse distributor 2 operates in such a way that under the action of a periodic pulse sequence from the generator output 5 pulses at each of the distributor outputs, a pulse duration (micro-stroke) is sequentially generated. The outputs of the distributor 2 pulses (micro-strokes), except for the fourth output, are connected both directly and through the second element OR 13 with the corresponding inputs of the voltage driver 3, from the output of which the voltage of a certain form is removed (Fig. 2a). The fifth and sixth elements AND 10 and 11, the delay unit 17 for one cycle serve to convert the voltage from the output of the voltage shaper 3 into a voltage of a certain form (Fig. 26), which through the third element OR 14 enters the first input deviating CRT system 18 (X coordinate). A two-bit counter 4, connected through the first element 6 and the 5-pulse generator, serves to count the cycles of operation of the 2 pulses distributor (micro-cycles), to generate a signal for the end of the symbol, as well as to control the second, third and fourth elements 7-7. the second input of the fourth element And 9 receives the voltage from the output of the voltage driver 3 (Fig. 2a). The second input of the third element And 8 receives the voltage inverted by the element NOT 16 (Fig. 2c). The second input element And 7 receives the input offset device. A similar shaped micro-pattern (polygram) is formed in the device. However, the order of formation of the program is chosen such that during the first ten cycles (the first and second cycles of the distributor 2 pulses (micro-tacts), the deflecting system of the CRT 18 along the X and Y coordinates receives voltages from the output of the third element OR 14 and the former 3 pulses (Fig. 3). During the second ten cycles (the third and fourth cycles of operation of the distributor 2 micro-cycles), the deflection system of the CRT (along the X coordinate) receives both the voltage from the output of the third element OR 14 and the bias voltage device input Through the second element I 7, and inverted voltage from the output Y of the voltage shaper 3. Fig. 3. The device operates as follows: The start signal starts the pulse generator 5. The pulses are fed to the distributor 2 pulses (micro-strokes) from five outputs of which h are removed, post-pulse, pulses of duration fc ,,. From the respective outputs of the distributor of 2 microtacts, pulses of duration tg are fed to the inputs of the voltage forming body 3 in such a way that during the operation cycle of the distributor 2 ow, t 5 is for the time, the output of the three HA voltage generated voltage of a specific shape (FIG. 2a In addition, the trapezoidal voltage formed during the first three clock cycles of the distributor 2 pulses, through the fifth element E0, enters the input of the one-stroke delay element 17, since the second input of the element 10 enters the resolving potential from the output of the first element OR 12. The trapezoidal voltage, delayed by Ka, is applied to the first input of the third element OR 14. To the second input of the third element OR 14, the voltage comes from the output of the voltage driver 3 through the sixth element 11, which is formed on the fifth time. Job distributor 2 pulses (mikrotaktov). Thus, at the output of the third element OR 14, a deflection voltage is formed (Fig. 26), which is fed to the first input of the deflecting system of the CRT 18 (along the X coordinate). In the first cycle of operation of the distributor 2 pulses (microtags), the dual-stage counter 4 is in the zero state, therefore the second input of the OR 15 is supplied to the second input of the deflecting system of the CRT 18. the output of the voltage driver 3 (Fig. 2a). The sixth pulse from the output of the generator 5 pulses through the first element And 6 changes the state of the counter 4 to, however, it does not change the operating mode of the device, since the second discharge of the counter 4 does not change its state (01). The device functions in the same way as in the first cycle of operation of the distributor of 2 pulses (micro-tact). The eleventh pulse from the generator output 5 pulses transfers the counter 4 6 to the state 10, i.e. the state of the second bit changes. The device switches to the third and fourth cycles of operation of the distributor of 2 microtates in such a state that the deflecting system of the CRT 18 (along the coordinate Y) from the output of the former 3 through the third element AND 8 and the fourth element OR 15 receives an inverted voltage (Fig . 2c). The deflecting system of the CRT 18 (along the X coordinate) in these two cycles from the input of the device through the second element And 7 enters the mixing voltage - HF necessary to transfer the beam of the CRT to the beginning of the formation of the one-tenth element of the polygram. Thus, in four cycles the distributor of 2 pulses (micro-strokes) forms the necessary deviating functions X (i) and Y (,), the necessary functions of forming a polygram. Simultaneously with the formation of elements of the polygram under the action of a periodic sequence of pulses with a frequency from the generator of 5 pulses, the modulator CRT 18 from the receiving register 1 receives the code of the displayed symbol, according to which only those elements of the polygram that are the outline of the displayed symbol are highlighted. The first pulse from the pulse generator 5, which came after the end of the fourth cycle of the circuit, is the overflow pulse of the counter 4, which prepares the device for generating the new symbol in a new familiarity. The proposed device in comparison with the known one has similar functionality — it forms and displays numbers, the Russian and Latin alphabet, a number of oriented vectors, mathematical signs and a number of conditional figures, by greatly simplifying the circuit design and improving the reliability of the device. In the device, as in the well-known for the formation of such a complex polygram, only one voltage driver is used, however, the number of logic elements is reduced by almost two times, the control trigger is also excluded from the device, the counter size of the pulse distributor (micro-strokes) and the re -. In the known device, due to the formation of deflection voltages f, which exist once in the cooking mode, 76 cooking for one additional cycle of the micro-tact distributor 6i) for the entire displayed information array and using two three-stroke (Si :-) delay elements connected in series with feedback The possibility of disruption of synchronization increases, which reduces the reliability of the device. In this device, in contrast to the known mode, preparation is excluded, deflecting voltages are generated at each cycle of the microtoactor distributor (5-tQ), only one delay element per cycle is used, which, combined with a significant simplification of the circuit solution, provides a significant increase the reliability of the device. In addition, the proposed technical solution on each displayed symbol provides a gain in time equal to (where H is the frequency of regeneration) and a gain in the information description equal to four bits. An apparatus for displaying information on a screen of a cathode ray tube, comprising a pulse generator, a pulse distributor, a voltage driver, a shift register, a counter, AND elements, OR elements, a NOT element, and a delay element, in order to simplify the device and reliability, the output of the pulse generator is connected to the input of the pulse distributor, the synchronizing input of the shift register and the first input of the first element I, the second input of which is connected to the corresponding the pulse distributor stroke and the output with the counter input of the counter, the first output of the counter is connected to the first inputs of the second and third elements I, and the second output to the first input of the fourth element I, the second input of which is connected to the first 6 MI inputs of the fifth and sixth elements Both directly, and with the second input of the third element I — through the element NOT and connected to the output of the voltage driver, the first input of the voltage driver is connected to the first input of the first element OR and connected to the corresponding output of the impedance distributor pulses, and the second input - with the output of the second OR element, the first input of which is connected to the second input of the sixth AND element and connected to the corresponding output of the pulse distributor, and the second input connected to the second input of the first OR element and connected to the corresponding output of the pulse distributor, the third input the first element OR is connected to the corresponding output of the pulse distributor, and the output is connected to the second input of the fifth element AND, the output of which is connected to the first input of the third element AND through the delay element LI, the second input of which is connected to the output of the sixth element I, and the output to the first input from the cloning system of the cathode ray tube, the second input of the deflecting system of the cathode ray tube is connected to the output {I "1 of the fourth OR element, whose inputs are connected to the outputs of the third and . the fourth And elements, the output of the shift register is connected to the modulator of the cathode ray tube, the bias input of the diverting system of which is connected to the output of the second And element, the second of which is the bias input of the device. Sources of information taken into account in the examination 1. VS Govorsyu. Displaying machine solutions on CRT screens, Moscow, Soviet radio, 1975. 2. Reinbvrg M. G. Formation of symbols on CRT screens. M., Energie, 1969. 3. Certificate of authorship on application no. 2543528, cl. G 06 K 15 / 2O, 14.11.77 (prototype). } Z one w i :: sixteen ten - n if (/ I Z 3 S and S ff N M e