SU1121701A1 - Symbol generator - Google Patents

Abstract

1. THE CHARACTER GENERATOR, containing the pulse generator, the first element OR, the input of the pulse generator and the first input of the neiaBoro element OR, is the first input of the generator, the output of the pulse generator is connected to the first input of the first register shift, the first output of which is connected to the second input of the first element OR the second output of the first shift register is connected to the first inputs of the first and second elements AND, the output of the first element AND is connected to the third input of the first element OR, the output of which is connected to the input of the second register C engine, with the second input of the first shift register, the first input of the first register and the first input of the third element AND, the first output of the second shift register is connected to the first input of the second element OR, the second input of the third element AND and the first input of the third element OR, the second output of the second shift register is connected with the second input of the second element OR, the output of which is connected to the second input of the first element AND, the first input of the fourth element AND, the second input of which is connected to the third output of the first shift register, and The first input of the Fourth element OR the third output of the second shift register is connected to the second input of the second element AND and the first input of the fifth OR element, the second input of which is connected to the fourth output of the second shift register, the fifth output of which is connected to the second input of the third OR element and to the first the input of the first deflection voltage generator, the first input of the second deflection voltage generator is connected to the output of the fifth OR element, the second inputs of the deflection voltage driver are connected according to with the outputs of the fourth and third OR elements, the outputs of the deflecting voltage drivers (directly and through inverters are connected to one of the switch inputs, the outputs of which are respectively the first and second generator outputs, (L the first and second outputs of the first register are connected respectively with the first inputs of the one and the sixth elements And the second inputs of which are connected .c. the third output of the first register, which is the third. Generation: | torus, the output of the fifth element And among the third inputs of the second and fourth elements And, the outputs of which are connected respectively to the second input of the fourth element OR and the third input of the third element OR, the output of the sixth element And connected to the third input of the first element And, the second the input of the first register is the second input of the generator, characterized by the fact that, in order to increase the speed of the generator, it contains a pulse distributor, a second register and the seventh AND element, the output of which is the fourth output for generators, the second register input is the second input of the generator ;, and its output connected to the first input of the pulse distributor, the second input of which is the first input of the generator, its third input connected to the output

Description

the third element And the first output of the pulse distributor is connected to another input of the switch, and the second output is connected to the first input of the seventh element And, the second input of which is connected to the first output of the second register shift.

2, The generator according to claim 1, wherein the pulse distributor comprises four triggers, the eighth, ninth and tenth elements AND, the sixth, seventh and eighth. the OR elements and the three elements are NOT, the first inputs of the eighth, ninth and tenth elements of the AND and the elements are NOT the first input of the distributor, the second inputs of the eighth and first elements AND, and are not the second input of the distributor, the first inputs of the trigger , the output of the eighth element And is connected to the first input of the sixth element

OR, the second input of which is connected to the output of the first trigger, and its output is connected to the second inputs of the ninth AND element and the second element NOT, the output of the ninth AND element is connected to the first input of the seventh OR element, the second input of which is connected to the output of the second trigger, and its output is connected to the second inputs of the tenth element AND and the third element NOT, the output of the tenth element AND is connected to the first input of the eighth OR element, the second input of which is connected to the output of the third trigger, and its output is connected to the second input About the trigger, the outputs of the three elements are NOT connected to the second inputs of the first, second, and third triggers, respectively, the outputs of which are the first output of the distributor, the second output of which is the output of the fourth trigger.

The invention relates to automation and computing and can be used in output devices. Computers, in display systems.

Devices for generating symbols are known, comprising a register, a pulse distributor, a pulse generator, a counter, a decoder, AND, OR elements, shapers ij.

The disadvantages of the known devices are the limited functionality, lack of speed and quality of the displayed information.

Closest to the proposed technical entity is a device for displaying information, comprising a pulse generator, three shift registers, a register, deflection voltage drivers, a switch, AND, OR 2 elements,

However, this device is not fast enough.

The purpose of the invention is to increase the speed of the character generator.

The goal is achieved in that the symbol generator comprising the pulse generator, the first element OR, the input of the pulse generator and the first input of the first element OR are the first input of the generator, the output of the pulse generator is connected to the first input of the first shift register, the first output of which is connected to the second the input of the first OR element, the second output of the first shift register is connected to the first inputs of the first and second AND elements, the output of the first AND element is connected to the third input of the first OR element, the output of which pogo connected to the input of the second shift register,

Q with the second input of the first shift register, the first input of the first register and the first input of the third element AND, the first output of the second shift register connected to the first input of the second OR element, the second input of the third AND element and the first input of the third OR element, the second output of the second shift register connected to the second input of the second OR element, the output of which is connected to the second

0 to the input of the first element And, the first input of the fourth element And, the second input of which is connected to the third output of the first shift register, and the first input of the fourth element

OR, the third output of the second shift register is connected to the second input of the second element AND and the first input of the fifth OR element, the second input of which is connected to the fourth output

0 of the second shift register, the fifth output of which is connected to the second input of the third element OR, and to the first input of the first driver, the deviation of the stresses, the first, the input. The second

5 of the deflecting shaper is connected to the output of the fifth OR element, the second inputs of the deflecting voltage shapers are connected respectively to the outputs of the fourth and third OR elements, the outputs of the deflecting voltage shapers are directly connected to one of the switches, the outputs of which are, respectively, the first and second outputs of the generator, the first and second, the outputs of the first register are connected respectively to the first inputs of the fifth and sixth elements AND, the second inputs of which x are connected to the third output of the first register, which was the SI third output of the generator, the output of the fifth element AND is connected to the third inputs of the second and fourth elements AND, the outputs of which are connected respectively to the second input of the fourth element OR and the third input of the third element OR, the output of the sixth element And is connected to the third input of the first element And, the second input of the first register is: 5th generator input, the pulse distributor, the second register and the seventh And element, the output of which is a quarter, are entered generator output, the second register input is the second generator input, and its output is connected to the first input of the pulse distributor, the second input of which is the first input of the generator, its third input is connected to the output of the third And element, the first output of the pulse distributor is connected to another the input of the switch, and the second output — with the first input of the seventh And element, the second input of which is connected to the first output of the second shift register. I Pulse distributor contains four triggers, the eighth, ninth and tenth elements AND, the sixth, seventh and eighth elements OR and three elements NOT, the first inputs of the eighth, ninth and tenth elements AND and the elements are NOT the first input of the distributor, the second inputs of the eighth and first elements AND and NOT are the second input of the distributor, the first inputs of the triggers are the third input of the distributor, the output of the eighth element AND is connected to the first input of the sixth element OR, the second input of which is connected to the output of the first trigger, its output is connected to the second inputs of the ninth element AND the second element is NOT the output of the ninth element AND is connected to the first input of the seventh OR element, the second input of which is connected to the second trigger output, and its output is connected to the second inputs of the tenth element AND, and the third element is NOT, the output of the tenth element is H soy dinen-with the first input of the eighth element OR, the second input of which is connected to the output of the third trigger, and the output is connected to. the second input of the fourth flip-flop, the outputs of the three elements are NOT connected respectively to the second inputs of the first, second and third flip-flops, the outputs of which are the first output of the distributor, the second output of which is the output of the fourth flip-flop. Fig, 1 shows the functional diagram of the symbol generator; in fig. 2 is a diagram of a pulse distributor; in fig. 3 — micropigram set and timing diagrams of deflecting functions. The device contains a pulse generator 1, the first and second shift registers (PC) 2 and 3, registers 4 and 5, deflection voltage drivers 6 and 7, pulse distributor 8, switch 9, elements 10-15, elements OR 16-20 , elements 21, 22, element 23, bus start 24, bus symbol code 25, bus illumination code 26, output buses (deflection functions in X, Y coordinates) 27 and 28, bus end of symbol 29. Pulse distributor 8 contains elements AND, elements OR 31. 31о, elements NOT 32.-32 ,,, triggers ЗЗ, -зз ,. Symbols are formed from four trapezoidal closed figures - micropigrams (Fig. 3). All figures are identical in shape, but are oriented in a plane in different ways. Each micro-polygram consists of five elements. Therefore, shift register 3 has 5 outputs. In turn, each element of a micropigram is divided into three parts. This division is caused by the fact that the third part of the third, the first and the third part of the fourth, the first part of the fifth elements can not be formed depending on the character code entered in register 4. The elements of the micro polygram are divided into three equal parts by shift register 2. In Shift registers 2 and 3 at the outputs appear sequentially. First on the first exit, then on the second exit, etc. The codes of the generated and displayed symbols are entered in register 4. Taking into account that the code contains purely zero micro-polygrams, they are excluded from the formation. Therefore, the length of the codes of the characters are different. Regardless of the sequence number of the zero micropigram, the character code is compressed towards the lower (first) micropigram. Thus, the character codes will be Compressed and this makes it possible to exclude from the number of codes 34 micropigrams (for the Russian alphabet), i.e. The code is reduced by 170 binary symbols as well. hence the storage memory. of these codes. ... ... To avoid confusion in the formation of a micropigram in the code of the symbols, the sequence numbers of the zero micropigram are recorded in the last two digits of the fourth micropigam. These two bits are eliminated from the formation process, and their Scrss codes are stored in a three-digit register 5. This is possible because for characters that have zero micro-polygrams, instead of the fourth, they are generally free and long. non-zero micropigram last two races of the number B of the fourth micropigram are free (zero). The deflection function formers 6 and 7 form the analog signals from the sequence of PULSES coming from shift register 3 directly and through the elements AND 11 12 and the elements OR 18-20. The summing input of the imaging unit b is connected to: The first output of register 3, and the subtracting input from the third and fourth outputs of the shift register 3 via AND 11 and OR 19. The summing input of the forming body 7 is connected to the first, fourth fifth outputs of the RSZ via elements And 12, OR 20, and the subtracting input of the driver 7 is connected to the second and third outputs of the RS3 via the element OR 18. The outputs of the drivers of the deflecting functions 6 and 7 are connected to the inputs of the switch 9 directly and through the elements HE 21 and 22. The pulse distributor contains four triggers, three And elements, three elements OR, three elements NOT. The number of triggers is determined by the number of micropigrams. If a certain micropigram does not need to be formed, then the corresponding trigger will not be translated into a single state. The control of the transition of a certain trigger to the “state” is carried out by the corresponding elements AND 30, NOT 32. The single outputs of the flip-flops are connected to the input of the switch 9. In addition, the output of the trigger 33j (Fig. 2) is connected to the fifth output of the RSZ, and at its output (bus 29) a signal is formed. End of the display. Pulse distributor 8 together with switch 9 commute the signals from the drivers and form output signals (Fig. 3) on the output buses 27 and 28 required for the currently formed micro-polygramma coordinates X and Y. The switch is made in the and elements or. It consists of eight AND elements and two OR elements. At one input of the elements And the signals arrive at the output of the formers b and 7, and at the other - the pulse distributor 8. The outputs of these elements are connected in a corresponding way with the inputs of the elements OR. The outputs of the OR elements are switch outputs ... . . The device works as follows. At the beginning of the work, an adjusting pulse is applied, in which all elements of the generator are reset (not shown). In this case, the shift registers 2 and 3, registers 4 and 5, the formers B and 7, the pulse distributor 8 are set to the O state (at their outputs a low voltage level is set). Bus 25 (Symbol Code) forms the generated and displayed character into 2-19 register bits 4 and into a three-bit register 5. In this case, those 4 register bits that correspond to the unit values of the character code bits are transferred to the one state. . For example, for character g, its code is written in bit 2-12. The remaining bits of register 4 are not filled. Register 5 records the sequence numbers of the zero micropigram. The pulse distributor 8, controlled by the register 5, excludes triggers 34 and 34j from the formation process. This is achieved by the fact that the signal from the output of register 5 acts on the second inputs of the elements And 30i, And 30 and the prohibiting outputs of the elements.32, 32. A bypass path 33f, 33.J is created, which are not transferred to the unit state. I ... On the Start signal (bus 24) to the pulse distributor 8, the trigger corresponding to the youngest of the non-zero micro-polygrams is transferred to the single state, register 3 is switched to the state when the single output appears on the first output, the generator 1 starts, the output of which pulses arrive at the input of register 2. At the outputs of register 2, voltage potentials correspondingly appear. The order of the formation of microplicrams is chosen such that their difference in the process of formation is observed, beginning with the third state of register 3, and depends on the signals at the outputs of the elements And 13, 14. Consider the operation of the device in all modes — by the example of the Formation of one micropigram on the first cycle register 3 works. In the absence of signals at the outputs of the And 13, 14 elements (the first mode of operation, the signals to the RSZ input are received evenly from the third output of the PC through the OR 16 element and all elements of the micropigram are formed at equal intervals of time (Fig. 3). The transfer of the register 3 from one steady state to another takes place at the end of each cycle of PC 2. It takes 5 cycles to form the entire micro-polygram. The process of forming analog signals by formers In the case of the signal i, first, at the output of the element And 13, and then at the output of the element And 14 (second mode of operation) the shift of the shift register 3 from the fourth state to the fifth is carried out earlier than usual on one clock pulse generator or 1/3 part of c stem work shift register. The device operates in this mode as follows: A single signal from an output of an element And 13 is fed to one input of an element And 11, to another its input a signal comes from the third output of a PC With the arrival of a signal to its third input from a second output of PC 2, the former 6 is normal for one clock cycle begins to form an analog signal (Fig. 3). At the end of the cycle of the shift register 2 signal c. its third output through the element OR 16 enters the input of PC 3 and transfers it to the fourth steady state (a signal appears at the fourth output of PC 3). At the same time, this signal is fed to the control inputs of PC 2 and register 4. Under the influence of this signal, shift register 2 is reset and the contents of register 4 are shifted 1 bit to the right (synchronous overwriting of the higher bits to the lower ones occurs). At the same time, at the output of the element 14, a signal appears, which is fed to one input of the element 10. At its second input, a signal is sent from the fourth output PC 3. The shift register under the influence of pulses from the generator 1 starts the fourth cycle of operation. When a signal appears at the second output of PC 2, element 10 also misses it. This signal through the element OR 16 is fed to the control inputs of shift registers 2 and 3, register 4. The processes described above proceed. As a result, PC 2 is reset, the contents of register 4 are shifted by one bit to the right. the fourth element of the micropolygram former by the shaper 6 and the fifth element by the shaper 7 begins one cycle earlier. The end of the work of shapers occurs simultaneously. The cycle time of the formation of a micropigram is one cycle of the pulse generator. . In the third mode of operation, the signals are on both outputs of the And 13, 14 elements, and then only on the output of the And 14 element. At the same time, the device until the fourth cycle of PC 2 (fourth state) PC 3 operates similarly to the second mode. The difference from the previous mode is that the formation of the fifth element of the micropigram by the shaper 7 begins one time earlier. Thus, the total cycle of the formation of the entire micropigram is reduced by two cycles. This is explained by the presence of a signal at the output of the AND 14 element in the case of the presence of-. register PC 3 in the fifth state. This signal arrives at the AND 10 element at its second input, the PC 2 signal is present, in the second state at the output of the AND 10 element a signal H appears, which through the OR 16 element converts shift registers 2 and 3 to the initial state. Next, a second micro-polygram is formed. Each symbol is formed in a 4 - M cycle of operation of the shift register 3, where n is the number of zero micropolygrams. In this case, the mode of operation on each cycle may be different and depends on the particular symbol formed and displayed. At the end of the first cycle of PC 3, at the output of the AND 15 element, under the influence of signals from the fifth output of PC 3 and the output of the element OR 16, a signal appears. It sets the distributor of imputas to the next state, determined by the next in order of growth (FIG. 3) non-zero micro-polygram, (The single signal affects the synchronization inputs of the trigger 33 and translates to one the trigger that has the signal and the information input) The switch 9 controlled by this signal switches the input signals for the given (following in order non-zero) micropigram deflection functions along the X and Y coordinates (FIG. 3), this process is repeated until the end forming the last non-zero (fourth) micro-polygram. This completes the formation of the symbol and the output (bus 29) appears, the signal End of the display. Simultaneously with the formation of micropolygram elements, bus 26 will receive a code from the output of the register .4

A light that is synchronized by the signals from the output of the element OR 16. In accordance with this code, only those elements of the micro-polygram are highlighted, which constitute the contour of the symbol being formed and displayed.

The proposed device provides an increase in speed (or a reduction in the formation time by the same time), taking into account the probability of the appearance of symbols for Russian

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text 2.2 times and for technical messages 1.92 times. In addition, in the proposed device, the amount of memory for character codes is reduced by 140 bits. The effect is achieved by efficiently encoding and compressing character codes. Thus, a smaller informational description is used per character, and much less time is spent on its formation with better display quality.

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1

Claims (2)

1. A SYMBOL generator containing a pulse generator, a first OR element, an input of a pulse generator and a first input of a first OR element are the first input of a generator, the output of a pulse generator is connected to the first input of the first shift register, the first output of which is connected to the second input of the first OR element, the second the output of the first shift register is connected to the first inputs of the first and second AND elements, the output of the first AND element is connected to the third input of the first OR element, the output of which is connected to the input of the second shift register , with the second input of the first shift register, the first input of the first register and the first input of the third AND element, the first output of the second shift register is connected to the first input of the second OR element, the second input of the third AND element and the first input of the third OR element, the second output of the second shift register is connected to the second input of the second OR element, the output of which is connected to the second input of the first AND element, the first input of the fourth AND element, the second input of which is connected to the third output of the first shift register, and the first input of the fifth OR element, the third output of the second · shift register is connected to the second input of the second AND element and the first · input of the fifth OR element, the second input of which is connected to the fourth output of the second shift register, the fifth output of which is connected to the second input of the third OR element and to the first input the first shaper of the deflecting voltage, the first input of the second shaper of the deflecting voltage is connected to the output of the fifth element OR, the second inputs of the shaper of the deflecting voltage are connected respectively to the outputs of the fourth and third OR elements, the outputs of the deflecting voltage drivers directly and through the inverters are connected to one of the inputs of the switch, the outputs of which are the first and second outputs of the generator, the first and second outputs of the first register 'are connected respectively to the first inputs of the fifth and sixth elements AND Its second inputs are connected to the third output of the first register, which is the third output of the generator, the output of the fifth element AND is connected to the third inputs of the second and fourth of the second AND element, the outputs of which are connected respectively to the second input of the fourth element OR the third input of the third OR element, the output of the sixth element AND is connected to the third input of the first AND element, the second input of the first register is the second input of the generator, characterized in that, with In order to increase the speed of the generator, it contains a pulse distributor, a second register and a seventh element And, the output of which is the fourth output of the generator, the input of the second register is the second input of the generator, and its output connected to the first input of the pulse distributor, the second input of which is the first input of the generator, its third input is connected to the output of the third element And, the first output of the pulse distributor is connected to another input of the switch, and the second output is connected to the first input of the seventh element And, the second input of which is connected to the first output of the second register · shift. 2. The generator according to claim 1, wherein the pulse distributor contains four triggers, the eighth, ninth and tenth elements of And, the sixth, seventh and eighth. OR elements and three elements NOT, the first inputs of the eighth, ninth and tenth elements AND and elements are NOT the first input of the distributor, the second inputs of the eighth and first elements AND and NOT are the second input of the distributor, the first inputs of the triggers are the third input of the distributor, the output of the eighth element AND connected to the first input of the sixth element OR, whose second input is connected to the output of the first trigger, and its output is connected to the second inputs of the ninth AND element and the second element NOT, the output of the ninth AND element is connected to the first input of the seventh OR element, the second input of which is connected to the output of the second trigger, and its output connected to the second inputs of the tenth element AND and the third element NOT, the output of the tenth element · * AND is connected to the first input of the eighth OR element, the second input of which is connected to the output of the third trigger, and its output is connected to the second input of the fourth trigger, the outputs of the three elements are NOT connected respectively to the second inputs of the first, second and third triggers, the outputs of which are the first output of the distributor, the second output of which is the output of the fourth trigger ..