SU1446643A1 - Symbol generator - Google Patents

Abstract

The invention relates to automation and computing technology and can be used in the construction of display devices. The purpose of the invention, a simplification of the device, is achieved by introducing a second decoder 7 and a shaper 9 of the initial beam shift code and the corresponding functional connections. The invention makes it possible to increase the reliability of the symbol generator and makes it more adaptable during manufacture. 4 ill., 3 tab.

Description

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The invention relates to automation and computing and can be used in the construction of display devices.

The purpose of the invention is to simplify the character generator,

FIG. 1 is a block diagram of a symbol generator; in FIG. 2, the CODES of eight unit vectors; Fig. 3 shows an example of the formation of a symbol (digit 2); in fig. 4 is an example of the formation of a complex symbol (treble clef),

The symbol generator contains a generator of I pulses, a scale setting unit 2, a first decoder of 3 characters, a 4 clock counter, a block of 5 memory, 8 register 6, a third decoder 7, an encoder 8, a driver 9 of the initial beam offset code, a second decoder 10, a coordinate counter 11 coordinates X and Y.

The 3 character decoder inputs (Symbol code), 1 pulse generator (Start), scale setting unit 2 (Size), memory block 5 (Characterization program data), encoder 8 (Rotation code and symbol mirroring) are generator inputs symbol in The outputs of register 6 (Intensity j color), counter I1 of X and Y coordinates (Deviation code X and Y) are the outputs of the symbol generator and are fed to modulating formation units (Intensity, color) and deflection voltages for a CRT.

The generator works as follows

The pulse generator 1 is deliberately used to generate clock pulses and control signals from the start of symbol formation (Start) and stop the character generator from the signal (End symbol) received from the first decoder 10.

The scale setting unit 2 generates control signals for the 4 clock counter and the driver 9 for the initial offset code, depending on the code value at the input Size.

3 symbols on a signal by a code The code on its input selects in the 5 memory block one of the whole set of symbols stored in it,

The 4 clock counter produces control signals for memory block 5 of register 6, encoder 8, first and

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the second decoder 10 and 7 in accordance with the timing diagram of the device.

The memory unit 5 is intended for storing the programs of formation of biases - oxes from single vectors, contains a set of microprograms of permanent cf files in the permanent storage device and variable symbols in the random access memory; The firmware of the variables varies depending on the input (Data of the symbol generation program) from the computer complex with which the device is connected.

The information from memory block 5 is recorded in register 6, the code of the part of the register bits is interpreted as a control code for the reproduction rate of a single vector, the code of the remaining bits is interpreted as a code for the direction of a single vector. A vector of any direction is defined as a unit having a one-step grid coordinate. At the same time, some register codes 6 are determined by decoder 7 and 10 as a sign of the end of the character and as a sign of prohibiting the increase of the character.

The encoder 8, using the direction code .. of a single vector coming from the register and the signals at the input (Rotation and mirroring code of the characters) of the device, generates signals arriving at the I1 counter of the X and Y coordinates, so that the code change at the output of the counter I X and Y coordinates correspond to the process of forming the outline of a symbol.

The shaper 9 of the initial displacement code is designed to bring the CRT beam to the center of the familiarity about which to rotate, as well as to mirror the characters about the X, Y axes, two diagonal axes located at angles of 45 and 135 ° about the X axis.

After the symbol is depicted, the familiarity is a grid of mutually perpendicular lines with the same vertical and horizontal spacing between them (with the same pitch).

The points forming the outline of the symbol are inside the familiarity cells. The process of forming the outline of the symbol starts from the familiarity center. Movement of the EJ beam from point to point

can occur in eight different directions with discreteness in one step. In the process of forming the contour of a symbol, the beam of a CRT moves both along the very contour of the symbol and along the lines connecting its individual sections (lines of communication). The unit vectors forming the outline of the symbol are modulated, and the linking generators of the link are not modulated.

The center of familiarity can either coincide with the outline of the symbol, or it can be found. to dwell outside of it.

The unit of the scale task 2 from the computer complex receives the character size code (similarity coefficient code).

The length of the similar code depends on the set of coefficients used.

For the construction of a symbol, it is necessary to arrange several unit vectors in the familiarity, depending on the complexity of the symbol (letter, digit, 25 complex symbols, etc.). The words (codes) of the set of vectors are read into register 6 of the formation of vectors from memory block 5. Words consist of 16 character bits relative to a given axis. Subsequent word addresses are computed by simply incrementing the address of memory block 5 after reading the word in the vector register.

Similarly, non-transformed characters are formed as follows. The pulse generator 1 is turned on by the Start signal (the signal of the beginning of the symbol formation). The Start signal as a signal. The end of a symbol is with the signal set to the initial state of all the registers, counters, unit 2 of the scale, the sensor 9.

Through the scale task block, the clock pulses go to the counters of 4 ticks, which sequentially solves all the nodes of memory block 5. At the decoded address from memory block 5, the code of the first word is read into register 6. The code of the word contains information about the four unit vectors that make up the beginning of the symbol outline. Simultaneously with reading the first word shaper 9 code

Dov, which are divided into four tetrazo initial displacement of the beam produces

11 X and Y coordinates of the familiarity center code are output to the counter (by installation input or counting, parallel or serial code). To the beginning of analysis of the first tetrad of the first microprogram word in register 6, the beam deflection code for X and Y coordinates comes from the counter P coordinates The X and Y are analog-to-analogue transducers at the X and Y coordinates, then to the beam deflection amplifiers at the X and Y coordinates, and the CRT beam moves to the familiarity center. .

dy Three bits in a tetrad determine the type of vector (Fig. 2) - and one bit - the presence or absence of illumination (it is possible to select five or more bits for each unit vector, while 2-3 bits can determine the intensity of the illumination Colour). There are a total of eight types of vectors, the KOTOJMJX sequence determines the law of character construction.

Null tetrad, besides, in the sequence of vector words means that the process of building a symbol is complete.

The encoder 8, at the required time points, generates counting nm pulses, on which the counter of the X and Y coordinates in accordance with the signals of the direction of movement increases or decreases the codes of numbers contained in them. Decreasing or increasing the codes of numbers in the counter of the 11 coordinates X and Y determines the direction of movement of the beam to the left - right or up - down, respectively.

Preliminary, the symbol code, the size of the symbol, the rotation code and the mirror image are received into the generator from the computer complex.

no character about the specified axis. Subsequent word addresses are computed by simply incrementing the address of memory block 5 after reading the word into the vector register.

Similarly, non-transformed characters are formed as follows. The pulse generator 1 is turned on by a Start signal (a signal to start forming a symbol). The Start signal as a signal. The end of a symbol is the signal for resetting all registers, counters, the scale setting unit 2, the sensor 9 to the initial state.

Through the scale task block, the clock pulses arrive at a 4 clock counter, which sequentially polls all the nodes of memory block 5. At the decoded address from memory block 5, the code of the first word is read into register 6. The word code contains information about the four unit vectors that make up the beginning of the character outline. Simultaneously with reading the first word shaper 9 code

the initial displacement of the beam produces

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issuance of 11 coordinates X and Y of the familiarity center code to the counter (according to the installation input or counting, parallel or serial code). By the beginning of the analysis of the first tetrad of the first word of the symbol's microprogram in register 6, the beam deflection code for the X and Y coordinates comes from the counter P of the X and Y coordinates and the digital-to-analog converters of the X and Y coordinates, then to the beam deflection amplifiers of the X coordinates and Y, and the CRT beam moves to the center of familiarity. .

The encoder 8, using the direction code from register 6, generates counting pulses for the coordinate counter X and Y II (+ & X, -LH, -t-uY, - & Y), at the same time, from register 6 along the Intensity circuit, gives the enable or disable signal for highlighting the first unit vector. Further, the information from the counter I1 of the X and Y coordinates through a digital-to-analog converter (not shown) in the form of a step voltage is fed to amplifiers along the X and Y coordinates to scan the CRT beam inside the familiarity.

In the next three cycles, the next three tetrads read from memory block 5 to word register 6 are analyzed, the next vectors forming the CHi-iBoaa circuit are formed, which is similar to that described until the input of the decoder 10 s of register 6 the code (0000) of the end of the symbol formation, the decoder 10 generates, the signal generation end signal. The end of the symbol. In this process, the construction of the symbol ends, the new symbol is sent to the computer complex from the symbol generator. Temporarily this occurs generator installation symbols to its original state.

If there is no information in the composition with the sign of the end of the symbol, then after the analogue of four tetrads from block 5 of memory, the next word with information about the next four unit zoros is read from the signal from the 4 clock counter.

To the encoder: the CHiSffio a code of the angle of rotation and mirroring is supplied to the encoder; But this code, encoder 8, prepares the combinational circuit, forms the changed aggregate of the counting pulses for the counter K0; XIN and Y (+ DX, -XX) , + & fiiY) Thus, yo o get a symbol, believe about its position on 90, 180, 270., as well as its mirror image relative to the X, Y axes or axes, rotate about the X axis at an angle of 45 ° (225), 135 ° (315 °).

Similarly, the PrVs111 symbols are formed in accordance with the size code (similarity coefficient code). The scale setting unit 2 generates 4 clocks for the counter and the imaging unit 9 of the initial beam offset code counted (determined by the size code number of times) pulses. Reading pulses to the memory block 5 from the 4 clock counter are also queued with changed purity, in this case each word tetrad with information about four unit vectors is analyzed the required number of times. In this way, a composite vector is formed like a uveg personal symbol. The next recalculated pulse from the scale setting unit 2 determines the new state of the 4 clock counter and, accordingly,

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new information on the next vector contour of the symbol.

When analyzing the nei / howl tetrad of the first word, received in register 6 from memory block 5, the decoder 7 is turned on, and the code 0000, the decoder 7 generates the zoom inhibit signal, which enters the scale 2 task 2. ba, which in this case blocks the recalculation of the control pulses for the 4 clock counter. Code 0000 is er - in this case it is a sign of a complex symbol already encoded in a large matrix (for example, in a 16x16 matrix of dots); and such a symbol is not subject to an increase, which is limited by the size of the counter G1 of the coordinates X and Y and the gain factor of the deflection amplifier.

The shaper 9 of the initial displacement code, when the sign of the prohibition of the value (the sign of a complex symbol) arrives, and the signal from the scale unit 2 performs positioning (setting the initial code in the counter M Koop; j№ffiaT X and Y) to output the beam to the familiarity center, In this case, for a 4-clock counter, pulses from a generator of 5 pulses, i.e. groats size.

In tab. I shows the composition of the information read from the memory block; in tab. 2 - microprogram of the formation of the character (figure 2); in table 3 is the firmware of a complex symbol (credential key).

Thus, the use of a different code equivalent of the displayed symbol (exclusion of the vector length) is significant. It simplifies the device with a slight increase (up to 10 - 15%) of the memory block size.

Simplification of the device5 introduction of new features allows to increase the reliability of the device. The device becomes more technological. In the manufacture, easier to operate.

Claims (1)

Invention Formula A symbol generator containing a pulse generator, a scale setting block, a clock counter, a memory block, a register, an encoder, an X and Y coordinate counter, a first decoder, a second decoder, and a trigger input of the pulse generator is input for I1 generator start, and the output is connected to the clock input of the scale setting unit, whose control input is the input of the generator symbol size control signal, and the output is connected to the clock input of the clock counter, the output of the clock counter is connected to the control inputs of the memory block, register, the encoder and the second decoder, the address input of the memory unit is connected to the output of the first decoder, whose information input is the input of the signal code of the generator symbol, the information input of the memory unit is informational the generator input, the output of the memory unit is connected to the information input of the register, the output of which is connected to the first information input of the chipset generator, to the information input of the second decoder and is the output of the signal of the intensity modulation of the beam of the generator, the second information input of the encoder is Bits with 15 14 13 12 And ten Note, The code 0000 in the tetrade J is a sign of the prohibition of increasing the character. The LLC code in the following tetrads is a sign of the end of the symbol. Table 2 15 14 13 12 P1098 7 & 54 3210 eight the generator rotation input, the output of the encoder is connected to the clock input of the X and Y coordinate counter, the output of which is the output of the generator beam deflection code, the output of the second decoder is connected to the pulse generator input lock output and is the output of the generator symbol end signal, characterized in that In order to simplify the generator, it contains the initial beam offset code generator and the third decoder, the information input of the initial beam shift code generator is connected to the output of the scale reference unit, and the output is connected to the information input of the X and Y coordinate counter, the control input of the third decoder is connected to the output of the clock counter, and the information input is connected to the register output, the output of the third decoder is connected to the blocking input of the scale setting block. Table 1 2 1 15 2 and Gyu I | 8 ttb Tz | 4 00 1 O 0111 t 01 i 1,010 1101 I 100 1 111 I o o o o 1,000 1010 1010 1100 1,100 1010 1011 1 11 o 11 1 o 1 -1 1 o 1 110 1110 1 110 1,000 1 111 1446643 10 Table 3 3 T 2 I 1 Go 0111 0000 1010 0111 1100 1100 1 It is about 1110 1 о о о 1000 I about 10 1001 1011 1 about 11 101 1 toil lilt 1001 1110 1 1.1 o 11 10 1110 1 I 10 0000 111 o 1 o 1 o (2) OY (one) H | y (o / w by (S) Figg 101 (5 4t "4 7 9  jy; 4f / J 72 П Ю 3 в 7 в 5 ч 3 2 / .3 7 9 l l l 4 v 5 W 13 M P  Yu 3; five g 4f V ««  / L / 5 7V / 3 12 P 10 3 S 7 6 S t 3 2 1 Phie.