SU1234871A1 - Device for displaying graphic information on screen of television display - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in the construction of information display devices (displays) that use a television imaging method for various automated control and design systems. The invention improves the accuracy of the device. Information about the characters whose image is to be displayed on the indicator is fed to a data input unit in which the address of the memory cell is formed, into which information about the sign code and the mix of DH and AY is recorded, which is written through the switch. Counters of familiarity numbers and lines of text ensure the sequential reading of memory cells in a synchronous manner with the sweep of the image on the screen. According to the code of the mark from the memory block, a table of decomposition of the image of the mark along the television lines is selected from the character generator. The offset AY from the memory block and the code of the current TV line from the TV line counter are fed to the adder, and the result to the character generator. The character decomposition code selected from it by the overflow signal from the character decomposition element counter in the row is stored in the register unchanged within the familiarity field and goes to the adder, which also receives the character decomposition offset code relative to the sign position. The sum signal goes to the multiplexer, the output of which is the output of the code converter, and to the input of the indicator. The master oscillator synchronizes the operation of the entire device. 2 Il. i (lu so 4 00

Description

The invention relates to automation and computing, in particular, information display devices (displays), which use a television image forming method, and can be used in various automated control and design systems.

The purpose of the invention is to improve the accuracy of the device.

FIG. 1 is a block diagram of the device; in fig. 2 - the image of the same sign displayed on the screen of the television indicator at different displacements along two axes.

FIG. 2 The 4x4 resolution decomposition screen size and 8X8 resolution sign decomposition size are taken and the zone 1 of the visible part of the sign decomposition is indicated within a fixed familiarity on the display unit screen; zone 2 is an invisible part of the decomposition of the sign.

The device (Fig. 1) contains the data input unit 1, the switch 2, the memory block 3, the first adder 4, the character generator 5, the second adder 6, the code converter 7, the television indicator 8, the master oscillator 9, the counter 10 of the decomposition elements of the character in the line , counter 11 is the number of the sign of the field, the counter of 12 television lines, the counter of 3 lines of text, register 14 and multiplexer 15.

To the input of block 1 is connected to the input channel information. The address output of the unit 1 is connected to the first input of the switch 2, and the information output used to transmit data on the character code and its displacements is connected to the first information input of the memory unit 3. The output of switch 2 is connected to the second (address) input of memory block 3.

The third output of memory block 3 is connected to the first input of the first adder 4, the second input of which is connected to the second output of the counter of 12 television lines working modulo m, where w is the number of television lines in the familiarity decomposition. The output of the adder 4 is connected to the second input of the character generator 5. The first input of the character generator 5 is connected to the second output of the memory block 3. Each code of the sign in the character generator corresponds to a table of decompositions of the sign on the television lines and along the TV lines, and the number of elements in the decomposition of the sign is greater than the number of elements in the decomposition of the familiarity. The output of the character generator 5 is connected to the data input of the register 14, which is part of the converter of 7 codes. The input of the record of register 14 is connected to the overflow output of the counter 10 decomposition elements operating modulo n, where n is the number of decomposition elements along the television line.

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The first input of the second adder 6 is connected to the first output of the memory block 3, and the second input is connected to the second counter output 10 of the character decomposition elements in the E5 line. The output of the adder 6 is connected to the control input of the multiplexer 15, which is part of the code converter 7. The data input of the multiplexer 15 is connected to the output of the register 14. The output of the multiplexer 15 is the output of the code converter 7 and is connected to the video input of the indicator 8.

The master oscillator 9 is used to synchronize the operation of the Bcei device, its output is connected to the card. gate 10. The output of the overflow of counter 0 is connected to the counting input of counter 1 of the familiarity number working from module N. where N is the number of familiarity in the line. The overflow output of the counter And the meter of familiarity is connected to the horizontal sync input of the indicator 8, and the second output is connected to the counting input of the counter 12, TV and 1) lines. The output of the overflow of the counter of 12 television lines is connected to the counting input of the counter 13 lines of text modulo M, where M is the number of lines on the display 8. The first outputs of the counter 11 are familiar numbers and the counter 13 lines of text are connected respectively to the second and main lines. switch input.

The device works as follows.

The indicator screen 8 is conventionally divided into MX familiarity, where M is the number of familiarity lines on the indicator screen 8, and N is the number of characters in a line. In this familiarity on the screen still. Each familiarity is uniquely associated with one cell in memory block 3. The address of this cell determines}) The familiarity number on the screen within which the image of the character whose code is recorded in this cell is displayed.

Information about the signs, the images of which should b1) 1 are displayed on the indicator 8 indicator, goes to block 1. This information consists of separate digital words, each word contains the number of the familiarity within which the image of the sign is formed, the codes of the sign displayed on the screen , and displacements and DU on wasps m X and Y, respectively.

According to the information about the familiarity number in block 1, the cell address of the memory block 3 is generated, into which the information about the sign code and the offset of the home memory and the remote control should be recorded. To record this information in memory block 3, the address output of block 1 through switch 2 is connected to the address input of memory block 3. The information on the sign codes and offsets dX dU comes from block 1 to the information input of memory block 3 and is written to the address. Received at the address input of memory block 3.

When forming the image on the information recorded in memory block 3, the outputs of the memory block 3 through the switch 2 connect the outputs of the familiarity number 11 counter and 13 text lines counter, which ensure the sequential reading of the cells of the synchronous memory block 3 with the image sweep indicator screen 8. At the same time, information about the code and offset of the LH and DU sign is sent to its outputs from the corresponding cell of the memory block 3.

The image of the sign is formed in familiarity, the number of which is determined by the state of the counters 11 familiarity and 13 lines of text.

The code of the mark from the output of the memory block 3 is fed to the character generator 5. According to this code, from the character generator 5, a table of decomposition of the image of the character in television lines is selected.

The size of the character decomposition table of kX I elements, where k is the number of rows of the elements of the character decomposition; 1 - the number of elements of the line. In this case, where m is the number of TV lines in the decomposition of familiarity; n is the number of elements of the decomposition of the sign along the television line, and when displaying one element of the decomposition of the sign corresponds to one element of the decomposition of the familiarity. For reasons of ease of implementation and the widest functionality of the device, it is advantageous to accept,.

Pa figs. Figure 2 shows the mapping of the same sign for the particular variant with k, 1 8, and m, n 4 in the cases of different values of the values of the values of the values of DF and AY along the axes A and Y, respectively. From here it can be seen that, within the limits of a fixed sign, an image is formed only in part of the decomposition of the sign determined by the displacements lx and dl. The displacements DH and dB themselves are counted from the upper left corner of the fixed familiarity and it is determined from which digit of the expansion of the sign the image of the sign begins within the familiarity. In this part of the decomposition of the sign is invisible, as it is not used for the formation of the image.

The offset of the remote control, read from memory block 3, arrives at the first input of the adder 4, the second input of which simultaneously receives the code of the current television line from the counter of 12 television lines. In this case, the counter 12 starts a continuous counting with the zero, the topmost line of the familiarity expansion

The result of the addition is fed to the second input of the character generator 5 and determines the number of the decomposition line in the character decomposition table.

Since the adder 4. reaches the character generator 5, the code rn, -f- ДУ, where t, is the number of the current TV line decomposition

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familiarity (,: гп), then on m, the line of television decomposition of familiarity on the screen 8 of the display unit displays the string t, dU decomposition of the sign. Due to this, the sign is shifted relative to the familiarity on the Y axis. Perpendicular to the television lines.

The code decomposition code selected from the character generator 5 over the current TV line is written to register 14 by the overflow signal from counter 10. The character decomposition code is stored in register 14 without changing the output of this expansion on this TV line within the familiarity. The code for the number of the decomposition element on the TV line comes from counter 10 to the second adder 6. To the other input of the adder 6, the code of the decomposition of the sign relative to the familiarity is received. From the output of the adder 6, the resulting sum is fed to the control input of the multiplexer 15, switching one of the bits of the register 14 to the video signal input of the indicator 8. At the same time, the character decomposition code on the TV line written in register 14 is converted into a serial video signal code. And since the input of the control of the multiplexer 15 is the code n, - | - dX, where n, - but the number of the current first element of the television line within the familiarity (,; n), then, in n, the decomposition of the familiarity in the television The image is formed on the line corresponding to the element with the n + DX number of the character decomposition in the current decomposition line. Due to this, the sign is shifted relative to the familiarity along the X axis, along the television lines.

Upon completion of the formation of a fragment of the image on a television line within the familiarity area, a fragment of the image is formed in the next familiarity along the television line. This occurs due to a change in the state of the counter I 1 familiarity and, consequently, the selection from block 3 of the memory of another sign code and offsets.

The formation of a fragment of the image takes place according to the codes of the sign and the displacements in the same way as described above. After the image has been formed on the entire TV line, by changing the state of the 12 TV line counter, image formation on the next TV line begins.

After the image has been formed on the entire familiarity line, the counter state of 13 lines of text is changed, and the device proceeds to image formation on the next line of familiarity.

The video signal generated at the output of the multiplexer 15 is input to the video signal of the indicator 8 and provides control of the luminosity of the screen. The indicator 8 is synchronized across the lines by the overflow signals, coming from counters 1 1 of familiarity and lines 13 of text. As a result, a complete image on the screen of the indicator is obtained, individual fragments. 11 | which, within the limits of familiarity, can be combined in c; single image by selecting the displacements LH and AY. In addition, you can learn the desired image on the screen by selecting the type of the sign, of which you are in a different way. shchinah displacements AH and AY (see Fig. 2 g. (), e).

Claims (1)

Invention Formula A device for displaying | -p (}) of a similar information on the screen of a televisor indicator, containing Hiee successively connected to the master g-generator. counter of the elements of decomposition of the sign in the line, counter 11ome) and familiarity, counter te.chevizionnyh lines, line of lines of text, successively connected b. data entry, 6.:ioK memory and character generator, the input of the input unit is the input of the device, the second output of the input unit is five the first input of the commutator, the second and third inputs of KOTOpoi O are connected respectively to the second output of the familiarity number and the nerve output of the text line counter, rropiiie to the outputs of the familiarity number and the text line counter, respectively, to the first and second inputs) H1 It has a leasing indicator, characterized in that, for the purpose of a new device, it contains the first and the adders, probably, the) codes, | i) i; i. |; tg) the swarm and the third inputs of the Orya xpc are connected by C (; (Ti; vrc rBetnio with the WO) o1 o. mA 1O | ri.o- the sign of the line in the string, traction Bbixfj,:;,) o: o connect 1-: en with the Gile input of the nyur .; о с / мматс) pa, the second entrance of which connect the CN | with the UTOPI IM output of the memory unit, a third (1 in;,; code K (.) is also connected to the first input-; nerg of the sum of the mountain, BTOpoi i whose input is coe. uinei-: with the HTOpbiM output of the television counter. and with the second input1 m sign-1 of the operator, Biiixo. i converter connecting code with the input.h 5I; 1st signal of the television indicator. (Nig. J AT) ,  U d) B psh 4U Srig. 2