SU1149304A1 - Device for displaying graphic information on television indication unit - Google Patents

Abstract

1. A DEVICE FOR DISPLAYING GRAPHIC INFORMATION ON A TELEVISION INDICATOR, containing a data input unit, the first, second and third outputs of which are connected respectively to the information inputs of the second and second counters and the address generator, the output of the address generator is connected to the first address input of the memory block, output which is connected to one of the inputs of the switch, the output of which is connected to one of the inputs of the video signal generator, the output of which is connected to the video input of the television indicator, the sync block The first, second and third outputs of which are connected respectively to the control inputs of the data input unit and the address former and another input of the video former, characterized in that, in order to improve the speed of the device, it contains the third, fourth and fifth counters, the first and the second encoder, the data modification unit, the AND block and the comparison block, the output of which is connected to another input of the switch, and the first input is connected to the output of the address generator, the fourth output of the data input block is connected to in the house of the first windbreaker, the output of which is connected to the information input of the fourth counter, one of the control inputs of which is connected to the fourth output of the synchronization unit, and the output - to the input of the second windshield, the first, second, third, fourth, fifth and short outputs of which are connected with the control inputs of the first, second, third and fifth counters, the block of elements And, and the first control input of the data modification block, the output of which is connected to the information input of the memory block, the second address input of the cat The first connection is connected to the output of the first counter, the second control input of the modification block (L data and the second input of the comparison block, the third input of which is connected to the output of the second counter and the third address input of the memory block whose output is connected to the information input of the data modification block, outputs the third and fifth counters are connected to the corresponding inputs of the block of elements I, the output of which is connected to another control input of the fourth counter. 2. A device according to claim 1, 4, wherein the data modification unit comprises the first register, the third encoder and the second register respectively, the output o and the information input of which are N respectively the output and information input of the block, the other input of the third encoder and the input of the first register are respectively the first and second control inputs of the block.

Description

The invention relates to automation and computing, in particular to devices for displaying graphical information on a television indicator.

A device for displaying graphical information on a television indicator is known, comprising a keyboard, a cathode ray tube, a regeneration unit, a character generator, shift registers, a control unit, and a synchronous generator 1.

The disadvantage of this device is the limited functionality in the display process, due to the fixed and limited character set in the character generator and, therefore, the inability to display graphic images of arbitrary shape.

The closest technical solution to the invention is a device for displaying information on a television indicator, comprising a control unit connected directly and through the element NOT to the first input of the first and second group elements and the first and second address counters, the first and second memory blocks, the first input of which is connected to the output of the corresponding address counter, and the outputs of the memory block — with the second inputs of the AND elements of the first and second groups, the outputs of which are connected to the inputs of the elements OR of the first group ppy, the outputs of which are connected to the input of the register connected through the character generator and the address block to the video block, the input block is connected to the exchange block and the control block connected to the exchange block, the third and fourth group element AND, the second group OR element and the switch, whose inputs are connected to the output of the exchange unit, the control unit and the outputs of the OR elements of the first group, the inputs of the elements and the third and fourth groups are connected to the first inputs of the AND elements of the first and second groups and the outputs of the first and second memory blocks 2.

A disadvantage of the known device is the low speed due to the fact that in order to form a rectangular filled image on a television indicator, it requires the reception of E-descriptions of vectors, where B is the height of the depicted rectangle.

The aim of the invention is to improve the speed of the device.

The goal is achieved by the fact that a device for displaying graphical information on a television indicator, containing a data input unit, the first, second and third outputs of which are connected respectively to the information inputs of the first and second counters and the address generator, the output of the address generator is connected to the first address input of the memory block. ti, the output of which is connected to one of

the inputs of the switch, the output of which is connected to one of the inputs of the video signal maker, the output of which is connected to the video input of the television indicator, the synchronization unit, the first, second and third outputs of which are connected respectively to the control inputs of the data input unit and the address maker and the other input of the video signal maker, contains Q the third, fourth and fifth counters, the first and second encoders, the data modification block, the AND block and the comparison block, whose output is connected to another input of the switch, and The first input is with the output of the address resolver, the fourth output of the data input unit is connected to the input of the first encoder, the output of which is connected to the information input of the fourth counter, one of the control inputs of which is connected to the fourth output of the synchronization unit, and the output The second, third, fourth, fifth, and sixth outputs of which are connected respectively to the control inputs of the first, second, third, and fifth counters of the AND block and the first un5 equalizing input of the modification block. x, the output of which is connected to the information input of the memory block, the second address input of which is connected to the output of the first counter, the second control input of the data modification block and the second

 the input of the comparator unit, the third input of which is connected to the output of the second counter and the third address input of the memory unit, the output of which is connected to the information input of the data modification unit, the outputs of the third and fifth counters are connected to the corresponding inputs of the I element block, the output of which is connected to another control the fourth meter input. The data modification block contains serially connected nerves,

0, the third encoder and the second register, the output and information input of which are the output and information input of the block, respectively, the other input of the third encoder and the input of the first register respectively, are the first and second control inputs of the block.

FIG. 1 is a functional diagram of the device for displaying graphic information on a television indicator; in fig. 2 is a block diagram of data modification.

A device for displaying graphic information on a television indicator comprises a data input unit 1, an encoder 2, a counter 3, an encoder 4, counters 5-8, a data modification block 9, a memory block 10, an AND block 11, a synchronization block 12, an address generator 13 , the comparison unit 14, the switch 15, the video signal driver 16 of the television indicator 17.

Block 9 data modification (Fig. 2) contains the register 18, the encoder 19 and the register 20.

The encoders 2. 4 and 19 are made on elements of the type of an electrically programmable permanent storage device (EPROM) or a programmable logic matrix (PLM). Such devices usually have a Hp bit input and a T output bit output and can implement the following logic functions Y .... Xn + Xit2 Xn-j ... (i, .--, n, w). The specific realizable function of such a device depends on the programming of the EPROM or PLA elements at the stage of using the device.

At the recording stage, depending on the mode of operation of the device, the operator, using the data input unit 1, can correct the information on the TV-indicator screen, either the computer or the control signal generating device (they are not connected) are connected to the first and second inputs of the data input unit 1 enter the display device and not shown in the drawings) and the data input unit 1 receives binary information containing the X and Y coordinates of the upper left corner of the recording area and the extent of the area along the X and Y coordinates (consideration is given to standard TV sweep), the recording signal of the logical "0 or logical" 1, the signal for selecting the scaling mode, the signal for selecting the background of the recording, etc. Thus, after a single call from the computer or the terminal, recording is immediately made to the set of memory cells.

From the first output of the data input unit 1, the X coordinate of the upper left corner of the recording area enters the first input of counter 5, the coordinate At the output of the data input unit 1 arrives at the input of counter 6, the inputs of the counter 7 and counter 8 arrive respectively at the recording area of the X coordinate Y, the input of the encoder 2 receives control information about the bits of the coordinates of the recording cells, the recording signals of the logical "O or logical" 1, the mode selection signals and the recording background selection.

The encoder 2 forms at its output a word of the address of the initial operation of the write control program for the device. The word address of the initial operation comes through the counter 3 to the input of the encoder 4.

Under the influence of control pulses coming from the outputs of the encoder 4, the counters 5 and 6 either receive the X and X coordinates, respectively. At the upper left corner of the recording area, or they increment these coordinates. Counters 7 and 8 decrement the numbers originally written in them that correspond to the size of the recording area on the X and Y coordinates. The group of elements 11 also determines the filling of the recording area either on the X coordinate on each line, or on the X coordinate and on the Y coordinate. In the first case, from the output of the encoder 4, through block 1 of the elements I, the second input of the counter 3 passes the control command, which then through the encoder 4 acts on the inputs of the counters 5 and 7 and block 9 of the data modification. Counters 5 and 7 enter the X coordinate of the beginning and the size of the recording zone along the X coordinate, then the process of filling the next line of the recording zone is repeated. At the moment of filling the recording area on the X and Y coordinates from the output of the encoder 4, through the block 11 elements AND, the input of the counter 3 receives the control command of the end of the recording cycle and the device goes into the next mode of waiting

0 exposure from the computer or control panel. During the filling of the recording area, the counters 5 and 6, in accordance with the control information, form the address of the memory cell at their inputs,

r in which you want to write a logical "O or logical" 1. This address goes to the third and fourth inputs of the memory unit 10 and to the inputs of the comparison unit 14. From the output of memory block 10, information is fed to the input of block 9. Block 9, in accordance with the values of the four lower-order bits of coordinates over X write cells, since the exchange with block 9 occurs in 16-bit words and a control command that modifies the word information about the brightness of the cells on the TV screen, received from the output

5 blocks of 10 memory.

The modified word corresponding to the recorded information is fed to the information input of block 10. Recording a rectangle of any size in this way

Q is carried out without multiple input of recording signals from the remote control or computer by performing the necessary number of recording cycles determined by the control program and the size of the recording area in X and Y coordinates.

5 At the stage of reproduction, the input signals of the address maker 13 from the third output of the data input unit 1 receive control signals about the image scale and its location on the screen, i.e. the coordinate information of the address generator 13 forms, at its output, the read address codes from memory block 10, taking into account the information about the scaling mode at the first input. The address code is fed to the input of the comparison block 14 and to the input of the block 10 and

5, from its output, binary information about the brightness of 16 points of the television raster is read into the switch 15. From the output of the switch 15, the information is fed to the input of the imaging device 16 of the video signal, to its input from the output of the synchronization unit 12, the synchronizing pulses arrive to match the information read from a specific address from the unit 10 with the television scan. Video signal generator 16 generates a video signal that is fed to a video input of a TV indicator 17. A sequence of video pulses allows you to receive on the screen of a TV indicator 17 any image consisting of elements of different brightness. Comparison unit 14 operates as follows. At its input from the output of the address maker 13, the read address codes from block 10 are received in the read mode, the other inputs of the comparison block 14 receive information about the addresses of the write cells from the outputs of the counter 5 and the counter 6, and a matching pulse is generated at the output of the comparator 15, a matching pulse is supplied to the TV indicator 17 through the imager 16 and is displayed at the point on the TV screen where the previous recording was completed, providing the operator with feedback in the imaging mode. Block 9 data modification (Fig. 2) works as follows. The input of the register 18 from the output of the counter 5 receives information about the four younger bits of the coordinates of the recording cell, from the output of the register 18 this information is fed to the input of the encoder 19, the other input of which receives the control information from the output of the encoder 4, the encoder 19 generates A word that contains information about writing a logical "O or logical" 1 and defines a set of cells in the source information word, which is read from the output of block 10 to the input of register 20, in register 20 the source word of information is converted is, i.e. the logical value of the bit in the word corresponding to the point on the screen, whose brightness needs to be changed, is changed. From the output of register 20, the modified (modified) word of information about the brightness of points on the TV screen arrives at the information input of unit 10. Synchronization unit 12 is connected to inputs of input unit 1, counter 3, address generator 13 and driver 16 and synchronizes all main units devices. The technical and economic efficiency of the present invention lies in the fact that it is increased approximately E times, where E is the height of the rectangle, the speed of the device when forming rectangular shapes on the TV indicator.

YU

79

20

2

Claims (2)

1. DEVICE FOR DISPLAYING GRAPHIC INFORMATION ON A TELEVISION INDICATOR, comprising a data input unit, the first, second and third outputs of which are connected respectively to the information inputs of the first and second counters and the address generator, the output of the address generator is connected to the first address input of the memory unit, the output of which is connected with one of the inputs of the switch, the output of which is connected to one of the inputs of the shaper of the video signal, the output of which is connected to the video input of the television indicator, synchronization unit , the first, second and third outputs of which are connected respectively to the control inputs of the data input unit and the address shaper and another input of the video signal shaper, characterized in that, in order to increase the speed of the device, it contains the third, fourth and fifth counters, the first and second encoders, a data modification unit, a block of AND elements, and a comparison unit whose output is connected to another input of the switch, and the first input is connected to the output of the address former, the fourth output of the data input unit is connected to the input of the first ifrarator, the output of which is connected to the information input of the fourth counter, one of the control inputs of which is connected to the fourth output of the synchronization unit, and the output is connected to the input of the second encoder, the first, second, third, fourth, fifth and sixth outputs of which are connected respectively to the control inputs of the first , the second, third and fifth counters, the block of AND elements, and the first control input of the data modification block, the output of which is connected to the information input of the memory block, the second address input of which is connected to the first counter, the second control input of the data modification unit and the second input of the comparison unit, the third input of which is connected to the output of the second counter and the third address input of the memory unit, the output of which is connected to the information input of the data modification unit, the outputs of the third and fifth counters are connected to the corresponding inputs block of elements And, the output of which is connected to another control input of the fourth counter. 2. The device according to π. 1, characterized in that the data modification unit comprises a first register, a third encoder and a second register connected in series, the output and information input of which are the output and information input of the block, the other input of the third encoder and the input of the first register are the first and second control inputs of the block, respectively . >