SU1229802A1 - Device for displaying information - Google Patents

Abstract

The invention relates to automation and computing and can be used in television information display devices. The purpose of the invention is to increase the speed of the device. This is achieved by introducing a switch and functional links and improving one of the control blocks (of the first), which reduces the size of the first RAM block. The device contains a buffer memory block, three RAM blocks, a comparison block, an address generator, a character generator, including a fixed memory block and a raster word generator, a register, shift registers, an OR element, a video control unit, a switch, the second and first control blocks . 1 hp f-ly, 2 ill. IsD 00 СХ)

Description

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

The purpose of the invention is to increase the speed of the device.

FIG. 1 shows a block diagram of the device; in fig. 2 is a diagram of the first control unit.

The device contains a block of 1 buffer

groups of symbols arbitrarily located on the screen of the video monitoring unit 14, in accordance with the coordinates of their starting points (XH, YH). Therefore, in block 3 of the operational memory, in addition to the character codes and the X coordinate, the current number of the television scanning line of characters of this command (Nw.) Must be stored. The value of NK. varies in the process of forming images of characters from maximally, the first 2, second 3 and third 4th value of the number of decomposition lines

memory blocks, a comparison unit 5, an address generator 6, a character generator 7 containing sequentially connected fixed memory block 8 and a raster word generator 9, register 10,

shift registers 11 and 12, the OR element 13, 15 changes only the value of NTC., the codes, the video monitoring unit 14, the switch 15, the coke and the coordinates Xn remain unchanged.

characters at the beginning of the formation to zero when the formation of a given group of characters ends. NTC value. stored in a separate word of block 3. In the process of forming an image of a group of characters

20

the second 16 and the first 17 control units, the device input 18, and the device communication paths 19-45. The first control block 17 contains accumulative adder 46, counters 47 and 48, register 49, switches 50 and 51, AND-HE elements 52 and 53, trigger 54 and AND-OR block 55.

The device works as follows.

In block 1 of the buffer memory contains the information of one television frame 25 of the image received at input 18 in exchange mode with the source of information. The information is encoded as display commands. Each command contains a coordinate part and information in the form of character codes. Commands in the cells of block 1 30 of the buffer memory are written in order of

display on the screen by raster lines.

In the process of forming a raster using signals on the communication bus 27 from the control unit 16, the main memory sequence is used to rewrite all boiler polling of the cells of the buffer command unit 1 relative to this raster code.

When each new command is recorded, its first word containing N is formed by control unit 17 and written to communications server 24 via switch 15 is written to memory unit 3. The remaining (K-1) words of each new command are recorded in memory block 3, accessed via communication buses 19 from block 1 of the buffer memory via switch 15.

The additional word of the RAM block 3, besides the NTC bits, contains the bit of the last instruction flag (AUC), the unit value of which determines the last command related to this raster line.

The next character command, coming from the buffer memory unit 1, is also analyzed by the comparison unit 5 and, if it belongs to the given line of the television raster, is recorded in the operational memory unit 3. So in block 3

mi ti At the same time, the coordinate code determines the starting point of the group of characters along the Y coordinate, through the communication buses 25 arrives at the first input of the comparison unit 5, the second input of which to the communications 28 from the control unit 16 receives the code of the current scan line, increased by 2 (YT-b2). If the value of Ya matches

40

line. In this case, the commands related to the (Yt- | -2) th line of the television raster are recorded during the reading of commands from the (Yt-f-l) th line from this memory.

All command words read from memory block 3, to communications 21, arrive in the first register 10 and are written to it when the control signals are YT + 2, comparison unit 5 generates a signal in 45 communication 34 “Record Sign (PZ), which is controlled. The first word from the output of block 3 to the communication bus 26 is fed to the control memory block 17 also enters laziness. The latter, in the presence of a PZ signal, and a control block 17, where the value of the ETC. reducing effects on women 29 is associated with a unit, is analyzed and then

from the control unit 16 records the communication buses 24 via the command switch 15 in the operational memory unit 3, 0 returns to unit 3. The recording procedures

The words of the command in block 3 and their reading are discussed in detail when describing the operation of control block 17.

The location of a group of characters on an EQ of a certain number of words (for example, K-1 from the wound of a video monitor unit 14 along the Y axis of words) is stored in block 3 operatively determined by the corresponding recording form of the corresponding signals on the communication servers 22-24.

Each display command takes

memory at consecutive addresses. The device allows to form an image.

command in block 3 of the RAM, and along the X axis, the address of the corresponding groups of symbols randomly located on the screen of the video control unit 14, in accordance with the coordinates of their starting points (XH, YH). Therefore, in block 3 of the operational memory, in addition to the character codes and the X coordinate, the current number of the television scanning line of characters of this command (Nw.) Must be stored. The value of NK. varies in the process of forming the image characters from the maximum value of the number of lines of decomposition

only the value of NTC is changed. Sign codes and the coordinates Xn remain unchanged.

characters at the beginning of the formation to zero when the formation of a given group of characters ends. NTC value. stored in a separate word of block 3. In the process of forming an image of a group of characters

only the value of NTC is changed. Sign codes and the coordinates Xn remain unchanged.

RAM, all commands related to this raster are rewritten.

When each new command is recorded, its first word containing N is formed by control unit 17 and written to communications server 24 via switch 15 is written to memory unit 3. The remaining (K-1) words of each new command are recorded in memory block 3, accessed via communication buses 19 from block 1 of the buffer memory via switch 15.

The additional word of the RAM block 3, besides the NTC bits, contains the bit of the last instruction flag (AUC), the unit value of which determines the last command related to this raster line.

The next character command, coming from the buffer memory unit 1, is also analyzed by the comparison unit 5 and, if it belongs to the given line of the television raster, is recorded in the operational memory unit 3. So in block 3

RAM, all commands related to this raster are rewritten.

line. In this case, the commands related to the (Yt- | -2) th line of the television raster are recorded during the reading of commands from the (Yt-f-l) th line from this memory.

All command words read from memory block 3 are transmitted to communications 21 in the first register 10 and written into it with control signals on communication 34 from control 16. The first word from the output of block 3 of the RAM also goes to block 17 of control, where the value of Lt. is reduced by one, analyzed, and then

The location of the group of characters on the screen of the video monitoring unit 14 on the Y axis is determined by the recording of the corresponding command in the 3 RAM memory, and on the X axis by the address of the corresponding video codes in the 3 or 4 memory blocks. The principle of forming video codes is that each raster line is divided into groups of raster elements, called raster words. The television image of a single line is formed by an ordered sequence of raster words. To do this, the coordinate code Xn is divided into two components, the first of which carries information about the number of the growth output of the shift registers 11 and 12 connected to the inputs of the element OR 13, the output signals from which are fed to the video monitoring unit 14. The scanning synchronization signals of the raster to the video monitoring unit 14 is received from control unit 16 via communication buses 30.

The shift registers 11 and 12 are alternately driven by read control write signals on the word word buses 37, counted from the beginning of Q from the control unit 16. If, for example, a raster is written to the television line (high bits HN). The shift register 11 is written.

The second component Hn corresponds to the nome-word in the parallel code, then at the same

At the same time, the element counted from the shift register 12 is given a twisted raster word (the least significant bits in the sequential code. XH). After the read function is completed, the First HF component from the registers changes places. The horn 10 through the address generator 6 on the control block 17 provides the formation of the addresses of block 3 when writing display commands to this memory and reading them, generating signals determining the operation mode of block 3 of the operational memory 20 (writing or reading), generating switch control signals 15 and the formation and recording in block 3 of the operational memory of the command command word.

In the initial state, the adder 46, the counter-generator 7. According to these codes, which are 47 and 48, the register 49 and the trigger 54 in the address of the video code of the line are reset. The zero state of all bits of the character stored in block 8 of fixed counters 47 and 48 triggers the memory of character generator 7, AND-NOT elements 52 and 53 are produced, respectively, reading this video code. The horizontal video output signals from which are fed to the code via the communication buses 45 pass to the inputs 56 and 57 of the block 55 of the AND-OR elements. world 9 of a raster word, which by block 55 at outputs 58 and 59 forms a shift of the video code of the line, the signal of setting the counter 48 to the number of elements defined (through the switch 51) and the trigger 54, and the second component of the code HH, and Also stored at output 60 on one of the buses 23 is the communication of this video code until the end of the processing of the zi - signal "Read RAM (WHAT THE RAM)", with the whole symbol command. For the following, the initial zero address of the block 3 of the common symbol is repeated so that the output of the accumulator video code 46 is shifted from the output of the communication bus 23 to the communication bus 23. After reading it is increased by the number of elements in the string of one familiarity plus the space between the characters. Thus, the video code of the raster words of a single character, "..

display commands. After completion, the counter 48 through the switch 51 and the trigger 54. of this formation on the signals on the Shi-Output signals generated by the block

35 communication from the control unit 16 of the turn control unit 3 or 4, which is currently recording, is the address of this memory.

The raster word is formed as follows.

When signals are applied to communication buses 34 from control unit 16, the passage of the first character and NTC codes is permitted. register 10, via communication buses 42, to the input of the knowledge block, 3 bits of the word, which determine the current number of the raster character string (NTC) and AUC, are received via communication buses 21 to the input of the block and set

The raster word deocode is recorded in one of the blocks 3 and 4 of the RAM on the communication buses 41.

17 controls are determined by the values of NTC, NTC-1, AUC, the PS signal, which is received via communication bus 26 from block 5 of the comparison, and the "Address increment signal (" - (- b) received on bus 29

Then, the production control unit 17 is connected to the control unit 16. reading the next symbol command from the RAM block 3 and writing it to the register 10. The selection of the display commands from block 3 takes place until 50, until the command, 1, is detected. The incompleteness of the formation of the inherently single value of the AUC, that the signs of this command, the combination of these signals, determine the following modes of operation of the control unit 17.

determines the completion of processing commands related to the television line. Raster words are read from blocks 3

The value is NTC i 0. In this case, at the output 61 of the block 55, a signal is generated that subtracts the unit 4 and to the rows 43 or 44 of the communication of the page 55 from the contents of the counter 48, arrive at the shift registers 11 and 12, which which is analyzed by the element, they form a video signal, convert I-NE 53, and the result of the analysis enters the parallel video code at the serial input of the block 56.

In the initial state, the adder 46, the counters 47 and 48, the register 49 and the trigger 54 are reset. The zero state of all bits of counters 47 and 48 triggers the AND-HE elements 52 and 53, respectively, the output signals from which are fed to the inputs 56 and 57 of the block 55 of AND-OR elements. Block 55 at outputs 58 and 59 generates signals for setting the counter 48 (via switch 51) and trigger 54, and at output 60 on one of the communication buses 23 a signal is read RAM (RAM), while the initial zero address of block 3 comes from the output of the accumulator adder 46 to the communication buses 23. After reading, „..

the counter 48 through the switch 51 and the trigger 54. The output signals generated by the unit

block 3 bits of the word, which determine the current number of the raster character string (NTC) and the control panel, go through the communication buses 21 to the input of the block and set

 communication with the control unit 16. 1. Incomplete formation of an isob Combination of these signals determines the following modes of operation of the control unit 17.

 The signs of this command are characterized by the value NTC i 0. In this case, at the output 61 of the block 55, a signal is generated that provides the subtraction of one .1. If in this mode the formation of command characters is not completed on the next raster line, and the command itself is not the last one for the current line, i.e. (NTC - 1 0) L (PPC 0), then the control unit 17 implements the following actions:

a) the register 49 records the address code of the RAM block 3 from the output of the adder 46 when exposed to a signal from the output 61 of the block 55;

b) in the counter 47, a code is set corresponding to the number of words of the RAM block in one command, when exposed to a signal from the output 62 of the block 55;

c) a signal is generated providing

ten

NTC. under the influence of control signals at the outputs 69 and 70 of the block 55;

b) the address of the RAM block 3 from the adder 46 is recorded in the register 49, and the code K is set in the counter 47;

c) the switch 15 switches to enable the input from block 17 and the first command word is written to block 3 of the RAM;

d) switch 15 is switched to the input from the first memory block 1 (the signal from block 55 on the communications bar 22);

e) a series of signals of the RAMD are formed with single increments of the address of the RAM block 3 and a decrease by one

switching the switch 15 to the input from the block of the number in the counter 47. Recording the new control control 17 (output 63 of the block 55);

d) a signal is written to block 3 of operational memory on one of the HJHH 23 communications (output 64 of block 55) and the first service word of the Q command is recorded in block 3;

e) a series of signals of the PORTRAIT are formed with unit increments of the address of the RAM block 3 in the adder 46 when signals from the outputs 65 and 66 of the block 55 are applied through the switch 50. From the output 66 25 to the block 55, the signal goes to the read input of the counter 47. Series output the signals of the TOZUZ stop after the counter 47 is set to zero, which is fixed by the element

AND-NOT 52.

At the completion of the cycle of operation of block 17 30 in this mode, the adder 46 is set to the address of block 3 of RAM, which corresponds to the first word of the next command.

Manda is completed when installed in the counter 47.

After completing the recording of one command, the PZ signal is analyzed. If it has a single value, then the process is repeated until the PZ becomes 0. In this case, the block 17 implements the following actions;

e) resetting the address of the memory block 3 set by

adder 49 (signal from the output of block 55);

g) in the adder 46, the address of the first word of the last command is entered, which is stored in register 49 (control signals at inputs 71, 72 of block 55);

h) reads out the memory block 3 by inputting the NTC value to the counter 46;

i) an entry is made at the same address of the RAM block 3 of the first word of the command with AUC 1 and with the same NTC value.

40

1.2. If, under the same conditions, command 35 is the last one in the current line, and there is no new data to write, i.e. () 0) L () A (PZ 0), then the actions of ad p. 1.1 are implemented, and in the first word of the command, the sign of the control panel 1, which is formed at the output

67 of block 55. At output 68 of block 55, a reset signal is generated for flip-flop 54, which records the completion of procedures for reading data related to (U-J-- 1) th raster line, and writing data related to (t - | - 2) th line.

1.3. If after reading all the data related to the (m +) th line, there are still commands to write, i.e. (NTC - 1 0) L L (AUC 1) L (PZ 1), then first by the control block 17, the actions of SQ ad-p. 1.1 are implemented with the control panel 0. After the command is completed, the address in block 46 is set to the address of the block 3 RAM, which records the first word of the newly entered command.

i) an entry is made at the same address of the RAM block 3 of the first word of the command with AUC 1 and with the same NTC value.

45

The switch 15 is then switched to the input from the control unit 17. The cycle of operation of the block in this mode ends with resetting flip-flop 54 and adder 47.

1.4.If the formation of the signs of this team is completed on the current raster line, i.e. the command words are read the last time, and this command is not the last one and there are no data to write for the subsequent raster line, i.e. (Lt.) d () LL (AUC 0), then the control unit 17 implements the actions corresponding to clause 1.16-d. In this case, all bits of the first word of an empty command contain zeros. The need to write the address of the first word of the command in the register 49 is missing.

1.5.If the processing of this command ends and it is the last, and

For this, the control unit 17 does not have data for recording, i.e. (Yts.

are the following actions.) / () L (), then realized) in the counter 48 through the switch 51 are the actions of clause 1.1 bd. In this case

sets the maximum value in register 49 remains the address of the first

NTC. under the influence of control signals at the outputs 69 and 70 of the block 55;

b) the address of the RAM block 3 from the adder 46 is recorded in the register 49, and the code K is set in the counter 47;

c) the switch 15 switches to enable the input from block 17 and the first command word is written to block 3 of the RAM;

d) switch 15 is switched to the input from the first memory block 1 (the signal from block 55 on the communications bar 22);

e) a series of signals of the RAMD are formed with unit increments of the address of the RAM block 3 and a decrease in the number in the counter 47 by one.

tsu number in the counter 47. Record new cov

Manda is completed when installed in the counter 47.

After completing the recording of one command, the PZ signal is analyzed. If it has a single value, then the process is repeated until the PZ becomes 0. In this case, the block 17 implements the following actions;

e) resetting the address of the memory block 3 set by

adder 49 (signal from the output of block 55);

g) in the adder 46, the address of the first word of the last command is entered, which is stored in register 49 (control signals at inputs 71, 72 of block 55);

h) reads out the memory block 3 by inputting the NTC value to the counter 46;

i) an entry is made at the same address of the RAM block 3 of the first word of the command with AUC 1 and with the same NTC value.

The switch 15 is then switched to the input from the control unit 17. The cycle of operation of the block in this mode ends with resetting flip-flop 54 and adder 47.

1.4.If the formation of the signs of this team is completed on the current raster line, i.e. the command words are read the last time, and this command is not the last one and there are no data to write for the subsequent raster line, i.e. (Lt.) d () LL (AUC 0), then the control unit 17 implements the actions corresponding to clause 1.16-d. In this case, all bits of the first word of an empty command contain zeros. The need to write the address of the first word of the command in the register 49 is missing.

1.5.If the processing of this command ends and it is the last, and

There is no data to record, i.e. (Yts.

va previous team. In this command, PPK 0. In order to write to the first word of the previous command, actions ei are implemented, Section 1.3.

Claims (2)

1.6. In the event that the processing of this command ends, but there is data to record, i.e. (Nrc-1 0) D (), then actions 1.1. A-d are first performed, then adder 46 is cleared and the address of the first word of the same command is entered into register 49, then actions 1.3 are performed. Next, the PPK flag stored by trigger 54 is analyzed. If, then it reads the first word of the next command. If, however, the PZ feature is again analyzed and further actions are similar to those described in section 1.3. 2. If, when reading data from the RAM, a command is encountered whose first word contains zeros in the NTC bits (NTC.O), then it is called empty because it does not contain data related to this raster line. 2.1. If in this case such a command is not the last one and there are no data for recording, i.e. () L (P3 0), the block implements the actions that register input, the sixth output to the second input of the character generator, the seventh output to one of the inputs of the address generator, the eighth output to the second inputs of the shift registers, the second output of the register connects to another input of the address generator, the outputs of which are connected to the second and third the inputs of the second and third blocks of RAM, another input of the block of buffer memory is 10 with the input of the device, characterized in that; In order to improve the speed of the device, it contains a switch, the first input of which is connected to the second output of the buffer memory block, the second and third inputs are respectively connected to the second and third 5 outputs of the first control unit, and the output to the second input of the first RAM block whose output is connected to the third input of the first control unit. 20 2. The device according to claim 1, characterized in that the first control unit comprises first and second counters, a register, first and second switches, the first and second they allow "to bypass a part of empty addresses g elements NAND, a trigger, a block of elements  .TJTT rr t gU block 3 of RAM by adding to the block 3 address of the number K set to the adder 46. This is realized by applying signals from the outputs 73 and 74 of the block 55 to the input of the switch 50. 2.2. If there is data to write, i.e. , then actions p, 1.3 a-d are first implemented, and then the state of trigger 54 is analyzed. If, then the next command is processed. If PPK 1, then, taking into account the presence of a prize-OR and accumulating adder, the first input of which is connected to the output of the first switch, and the output is the first output of the first control unit and connected to the first input of the register, the output of which is connected to the first the input of the first switch, the second, third, fourth, fifth, and schoi inputs of which are connected respectively to the first, third, fourth, fifth and sciego outputs of the block of elements AND-OR, the scaled output of which At the PZ, the actions described 35 are connected to the first input of the first counter. in paragraph 1.3. Switch 15 is a typical multiplexer from two directions to one. Invention Formula 40 The first and fourteenth outputs of the block of AND-OR elements are connected respectively to the first, second and third inputs of the second second input of which is connected to the tenth output of the block of AND-OR elements, and the output to the inputs of the first element AND - NOT, the eighth, ninth and eleventh outputs which are respectively the first, third and second outputs of the first 1. A device for displaying the control information block, and the twelfth, of the thirteen memory containing successively connected buffer memory block, comparison block, first control block, first RAM block, register and switch generator 45, the fourth input of which is a torus the output of which is connected to the first is the third input of the first block to the inputs of the second and third blocks of the control, the output of the second switch of the connected memory, the outputs of which are connected to the first input of the second counter, the second first inputs shift registers, the inputs of which are connected to the fifteenth of which are connected to the inputs by the element of the block of the AND-OR blocks, and the output of the OR, whose output is connected to one 50, the second output of the first control unit, from the inputs of the video monitor unit, another direction, and is connected to the inputs of the second input of which is connected to the first output of the NAND element, the output of which is connected to the second control unit, the second output to the second input of the block of AND – OR elements that are connected to the second input of the first and second whose inputs are The control unit, the third output to the second and first inputs of the first block, the input to the comparison unit, the fourth control, respectively, the fourth input move to one of the inputs of the buffer memory block; fifth output to the second block of elements is connected to the output of the first NAND element, fifth and scramble input of the register, sixth output to the second input of the character generator, seventh output to one of the generator inputs addresses, the eighth output - to the second inputs of the shift registers, the second output of the register is connected to another input of the address generator, the outputs of which are connected to the second and third inputs of the second and third RAM blocks, respectively, another input of the buffer memory block is Odom device characterized in that; In order to increase the speed of the device, it contains a switch, the first input of which is connected to the second output of the buffer memory block, the second and third inputs are respectively connected to the second and third outputs of the first control unit, and the output to the second input of the first RAM block, output which is connected to the third input of the first control unit. 20 2. The device according to claim 1, characterized in that the first control unit comprises first and second counters, a register, first and second switches, the first and second  elements NAND, trigger, block of elements elements NAND, trigger, block of elements TJTT rr t gU AND-OR and accumulating adder, the first input of which is connected to the output of the first switch, and the output is the first output of the first control unit and connected to the first input of the register, the output of which is connected to the first input of the first switch, second, third, fourth, p the first and third inputs of which are connected respectively to the first, third, fourth, fifth and second outputs of the block of AND-OR elements, whose output is 40 The fourth and fourteenth outputs of the AND-OR unit are connected respectively to the first, second and third inputs of the control secondary unit, and the twelfth, the fifteen switches of the switch, the fourth input of which is the third input of the first control unit, the output of the second switch is connected to the first input the second counter, the second input of which is connected to the fifteenth output of the block of AND-OR elements, and the output is the second output of the first control unit and connected to the inputs of the second AND-NOT element, the output of which is connected to the third input of theAND-OR elements, the first and second inputs of which are the second and first inputs of the first control unit, respectively, the fourth input control unit, and the twelfth, trinad- fo switch, the fourth input of which is the third input of the first control unit, the output of the second switch connected to the first input of the second counter, the second input of which is connected to the fifteenth output of the block of AND-OR elements and the output is the second output of the first control unit and connected to the inputs of the second IS-NOT element, the output of which is connected to the third input of the block of AND-OR elements, the first and second inputs of which are the second and first inputs of the first block management accordingly but fourth entrance the block of elements is connected to the output of the first element NAND, fifth and shch1229802 ten These inputs - with the corresponding outputs, the swarm and the third inputs of the trigger are connected to the trigger, the first input of which is the threeteenth and seventeenth outputs by the block input of the first control unit, the second AND-OR elements, respectively. figure 1 Editor N. Bobkov Order 2229/51 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, F-35, Raushsk nab. 4/5 Branch PPP "Patent, Uzhgorod, st. Project, 4 Compiled by V. Sweeping Tehred I. Veres Corrector A. Zimokosov Circulation 455 Subscription