SU1427412A1 - Device for displaying information on crt screen - Google Patents

Description

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The invention retracts to automation, telemechanics, and computer technology and can be used in computer numerical control systems as external 3BMs devices that allow the output of alphanumeric information.

The purpose of the invention is to simplify the device and improve its speed.

KA figure 1 presents a functional diagram of the device; FIG. 2 is a functional diagram of a synchronization unit; 3 shows an example of an image of a screen of an electron beam tube (CRT),,

FIG. 1 are indicated by computer 1 and transceiver 2.

The device contains a master oscillator 3, synchronization unit 4, registrar, address 5 registrar, second 6 and third 7 switches, operational memory block 8, first switch 9, decoder 10, character generator P element OR 12 driver of video signal 13, blocks 14 and 15 frame and line sweeps and CRT 16.

The synchronization unit 4 contains a counter 4.1 sign elements; counter 4.2 characters, the first counter 4.3 television lines, shaper 4.4 lowercase extinguishing (SGI) and sync pulses (DDS), the first element And 4.5, the counter 4.6 character lines, shaper 4.7 personnel extinguishing (OIG) and sync pulses (XI), second counter 4.8 TV lines and second and nd, 9.

Positions 17, 18, and 19 denote the OUTPUTS of the first second and third groups of synchronization unit 4, respectively, by positions 20–24 — the first, second, third, fourth, and fifth outputs of unit 4, respectively; position 25 - the outputs of the fourth group of the block., and position 26 - the outputs of the fifth and sixth groups of the block.

The device works as follows.

From the computer 1, the address data buses and c, X-ray commands transmit control commands to the transceiver 2, the Address and data are transmitted from the computer I over the same time-separated buses and are formed by the muddy driver of the transceiver 2 o

From the first to the eleventh outputs of the transceiver 2, information is output.

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qi, which is written to the address register 5 by the synchronization signal from computer 1. A synchronization signal is transmitted to the computer to confirm the recording. From the outputs from the first to the seventh transceiver 2, in the intervals between the transmission of the address, it outputs data to the RAM block 8.

The address recorded in register 5 of the ad-, res, from the first to ninth exits of the register is given to switch 6 (addresses). The switch 6, if the twelfth bit of the address register 5 is set to zero, transmits the value of the address recorded in register 5 to the corresponding ad-, pecHbie inputs of block 8, thereby selecting the addresses of the cells to which data is written by the control signal (write) transceiver 2.

When the twelfth bit of the address register 5 is set to one (read mode from block 8), the address switch 6 switches its inputs to the outputs of the synchronization unit 4 and switch 7 (format).

The synchronization unit operates as follows.

The sequence of pulses of the clock frequency from the output of the master oscillator 3 is fed to the counting input of the counter 4.1 of the elements of the sign of block 4. The counter 4.1 is a four-digit binary synchronous counter with transfer. In order to form a sign on its width, five dots and three dots were used on the display to establish the distance between the marks. Therefore, to form a matrix of characters taking into account the distance between them, the bits of the sviaita elements, r, its fourth bit, are used as the first digit of the 4.2 character counter. The transfer output (P1) of the 4.1 counter is fed to the counting input of a 4.2 character counter, similar to counter 4.1, and to the shaper 4.4, which generates lower case damping pulses (SGI) and horizontal synchronizing pulses (FID).

The output of the fourth bit (C) of the counter 4.1 and the outputs C2-C5 of the counter 4.2 are connected via the switch 6 during reading the information to the address inputs of the block 8.

The counter 4, 3, to the counting input of which the pulses of the SET.1 are received from the generator 4.4, forms a sequence of pulses T - T4 tele10

lines. Three bits T1 - TK of counter 4.3 are used to form a text line, and the fourth bit T4 is necessary to form a space (P.1) pulses, the duration of which is equal to the length of four television lines. When the pulse width of the gap is changed, combinations of other bits can be connected to element 4.5 And, the output pulse of which sets the counter of 4.3 TV lines to zero, goes to the counting input of the binary counter 4.6 digits and to the 4.7 frame clock (OIG) and frame sync pulses (XI ). Outputs. T1 - T4 of the counter 4.3 are fed to the inputs of the switch 9 to form the image of characters on the screen of a CRT in a single headquarters.

The output T2 of the second discharge of counter 4.3 is fed to the counting input of the counter 4.8 television lines, representing a three-digit binary 25 counter. The first (T1-2) and second (T2-2) bits of counter 4.8, together with the second bit (T2) of counter 4.3, are used to form a text line on a different scale. The third 0 bit (TZ-2) of the 4.8 counter is used to form the gaps. The duration of the gap is determined by the pulse from the output of the element AND 4.9, the inputs of which are fed to the second (T2-2) and third (TK-2) bits of the counter 4.8, which allows the counting in the counter 4.8 to 6.

The outputs (V1 - V4) of the four-bit binary counter 4.6 are used to form familiarity (lines of text) on the screen of the CRT 16.

The shaper 4.7 forms personnel damping pulses equal in time to the formation of ten familiarity. The frame damping pulse synchronizes the operation of the 4.8 counter in order to avoid failures when the CRT screen forms two images at the same time.

If the switch 7 is in one of the positions corresponding to one of the formats, then through the switch 6, nine blocks of address C1 - C5, U1 - U4 go to block 8 and from the output

characters are deciphered by character generator 11, which is an EPROM. The three lower-order addresses of the EPROM connected to the outputs of the switch 9 select the TV line number in the subscript, and the character codes from block 8 arriving at the inputs from the fourth to the tenth category of the EPROM, set parallel character codes to be displayed on the telecast. As a result, for each character code coming from block 8, character generator 11 generates for each character in TEL 15 a combination of zeros and ones in the form of a n - two-sided parallel code to driver 13 of video signals.

The imaging unit 13 converts the parallel code of the character generator 11 in serial. The I-LTM 12 element, whose input receives frame damping pulses, small damping pulses, and a signal from the output of switch 9, triggers the video signal blocking signal, which allows or prohibits the control signals from the CRT modulator 1b.

; In the moments when there are no computer character codes 1, through the transceiver 2, at the address stored in address register 5, through switch 6, writes to control unit 8 control codes of switches 7 and 9. During the readout, the information from the unit 8 under the control of the signals C1 – C5 of the unit 4 of the synchronization and the output signals of the switch 7 is encoded with the decoder 10, which allows the format and scale codes to be decrypted. When the output code of one of the formats switches 7 and 9 are transferred to the first position. Switch 7 in this position connects outputs from U1 to U4 counter 4.6 character block 4 to the inputs of switch 6 and through it in read mode from the sixth to nine inputs of block 8. If during one single read cycle the decoder 10 does not meet the control code of another format, character generator 11 decrypts 512 character codes, which corresponds to the address field of a 9-bit RAM block.

Switch 9 in the first format us35

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simultaneously with T-i switch - f - y - - - - - -, - С С

unit 8, in the absence of a signal from the controller 7, also to the first position, the character codes and the control codes of format and scale are taken together from the transceiver 2 by connecting the outputs T1 - TZ of the counter 4.3. Codes

to the three address inputs, starting with the younger digit of the character generator 1 1 o

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characters are deciphered by character generator 11, which is an EPROM. The three lower-order addresses of the EPROM connected to the outputs of the switch 9 select the TV line number in the subscript, and the character codes from block 8 arriving at the inputs from the fourth to the tenth category of the EPROM, set parallel character codes to be displayed on the telecast. As a result, for each character code coming from block 8, character generator 11 generates for each character in TEL 15 a combination of zeros and ones in the form of a n - two-sided parallel code to driver 13 of video signals.

The imaging unit 13 converts the parallel code of the character generator 11 in serial. The I-LTM 12 element, whose input receives frame damping pulses, small damping pulses, and a signal from the output of switch 9, triggers the video signal blocking signal, which allows or prohibits the control signals from the CRT modulator 1b.

; In the moments when there are no computer character codes 1, through the transceiver 2, at the address stored in address register 5, through switch 6, writes to control unit 8 control codes of switches 7 and 9. During the readout, the information from the unit 8 under the control of the signals C1 – C5 of the unit 4 of the synchronization and the output signals of the switch 7 is encoded with the decoder 10, which allows the format and scale codes to be decrypted. When the output code of one of the formats switches 7 and 9 are transferred to the first position. Switch 7 in this position connects outputs from U1 to U4 counter 4.6 character block 4 to the inputs of switch 6 and through it in read mode from the sixth to nine inputs of block 8. If during one single read cycle the decoder 10 does not meet the control code of another format, character generator 11 decrypts 512 character codes, which corresponds to the address field of a 9-bit RAM block.

Switch 9 in the first format us35

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simultaneously with the switch 7 also into the first position, connecting the outputs T1 - TZ of the counter 4.3

to the three address inputs, starting with the younger digit of the character generator 1 1 o

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The switch 9 connects the T4 INPUT of the counter 4.3 of block 4 to the third input of the element OR 12 to block the output of the video signal when creating spaces between signs. As a result, an image is formed on the screen of the CRT 16; it contains 512 characters (32 in; line and 16 characters) with distances between characters in the character line: three dots and I; I’m signposts into four television lines.

If the tenth digit of the 5-ipeca register connected to the 1st of the tenth digit of the 8s block is set to zero, on the screen of the CRT 16 the first page of the recorded from the computer 1 is displayed, if the tenth digit - Step 5 is set to one, then the second page of the image recorded from the computer 1 is displayed on the screen of the CRT 16,

 When the decoder 10 detects the control code of the second format and: the scale switches 7 and 9 switch to the second position. Switch 7 in the second position connects outputs U - UZ of the counter 4.6 of block 4, outputs U2 - U4, and instead of output U4 of the counter .4.b, connected in the first format, connects the output of the eleventh register bit 5. If the eleventh bit of the register 5 is set to zero, then at the output of block 8, character codes located in the first half of the page} are printed twice on each character in comparison with the first format. The third digit of the counter 4.8 is connected by the switch 9 to the element OR 12 to form the distance between the signs; second scale. The sign generator 11 decrypts the character codes from block 8, and for every two TV lines, sequences of the same points of the generated characters in the character line and formed by the shaper 1 3 video signals are displayed on the screen of the CRT 16. As a result, the image of the signs is vertical two times.

The width of the characters, like the typewriter font, remains unchanged, but the visual image of the characters is perceptible. It is as large as a magnified eye.

When detected by the decoder 10. the control code of the second or first format switches 7 and 9 are switched to the appropriate position and the combined image of characters in normal and enlarged scale is formed on the screen.

If the eleventh bit of register 5 of the address is set to one, then in the second format, the screen of the CRT 16 displays the second half of the first page. If the tenth bit of the register of the 5th address is set to one, then the first or second half of the second page is displayed depending on the state of the eleventh bit of the register 5 on the CRT 6 screen.

Obtaining signs of various sizes allows the CNC operator to increase productivity by extracting particularly important information into; on a larger scale.

Formula of invention

1, A device for displaying information on the screen of a cathode ray tube (CRT) containing a master oscillator, the output of which is connected to the input of the synchronization unit, the first and second outputs are connected respectively to the inputs of the horizontal and frame scans, the outputs of which are the outputs of the device -. The third and fourth outputs of the synchronization unit are connected to the first and second inputs of the OR element, the third input of which is connected to the output of the first KOMi iyTaTopa, information inputs of the first group, information input and information inputs of the second group of the first switch are connected respectively to the outputs the first group, the fifth output and the outputs of the second group of the synchronization unit; the control input of the first switch is connected to the output of the decoder, whose inputs are connected to the outputs of the operational unit connected to the address inputs of the character generator, the control inputs of which are connected to the outputs of the first switch group, the outputs of the character generator are connected to the information inputs of the video signal generator, the output of which is connected to the CRT modulator, the control input and the sync inputs of the video signal generator are connected respectively to the output element OR and the outputs of the third group of flea synchronization, information7 .14

The operational inputs of the operating memory unit are address inputs of the device, the recording control input is the first control input of the device, characterized in that, in order to improve performance and simplify the device, it contains the address register, the second and third switches, the information inputs of the register the addresses are connected to the device's address inputs, the address register write control input is the device's synchronized input, the read control input is the second control input of the device, the address register group outputs connected to the information inputs of the first group of the second switch, the information inputs of the second and third groups of which are connected respectively to the outputs of the third switch and the outputs of the fourth group of the synchronization unit; the first output of the address register is connected to the control input of the second switch whose outputs are connected to the address inputs of the operational memory block the second output of the address register is connected to the first control input of the third switch, and the third output is connected to the read control input of the operational unit memory information inputs of the first and second groups. the third switch is connected to the outputs of the fifth and sixth groups of the synchronization unit; the second control input of the third switch is connected to the output of the decoder.

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The synchronization contains a counter of the elements of the sign, the counting input of which is the input of the block, the outputs of the group of the counter of the elements of the sign are the outputs of the third group of the block, the counter of characters whose counting input is connected to the overflow output of the counters of the elements of the sign, the first counter of the TV lines The outputs of the first group and the second output are the fifth output of the block, and the counting input is connected to the first output of the horizontal quenching and sync pulse former, the second output of which is connected to the reset input of the counting

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symbols, and the third and fourth outputs are respectively the third and first outputs of the block, the first element AND, the inputs of which are connected to the third and fourth outputs of the first counter of television lines, the output of the element AND is connected to the control input of the frame former dying and sync pulses, the reset input of the first TV line counter and the counting input of the counter of the character lines, the group outputs of which are the outputs of the fifth and sixth groups of the block and are connected to the information inputs of the forwarder of personnel suppressors and The pulse sync input is connected to the overflow output of the enacostrock counter, the first output of the framing and sync pulse generator is the fourth output of the block and is connected to the control input of the second television line counter, and the second output is the second output of the block, the reset input of the second television line counter connected to the output of the second element P1, and its outputs are the outputs of the second group of the block, with the second and third outputs of the second television line counter being connected to the inputs of the second About the element And,; the counting input of the second TV line counter is connected to the second output of the first TV line counter, the first output of the sign element counter is connected to the installation input of the lower quenching and sync pulse generator, the first and second i synchronous inputs of which are connected respectively to the fourth output of the sign element counter and. the overflow output of the symbol counter, the outputs of which and the fourth output of the counter of the elements of the sign are the outputs of the fourth group of the block, the output of the overflow of the counter of the elements of the sign are connected to the control input of the lower quencher and sync pulses, the information inputs of which are connected to the corresponding GM output. The symbol counter, the third and the fourth outputs of the horizontal quencher and sync pulse generator are the third and first block outputs, respectively.

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iif3S11 / 38

(-yohhh2 -os / and

cfujj schoyi-yishzg

Editor E. Kopcha

Tehred M. Khodanych

Order 4856/47 Circulation 459

VPIIRI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

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Compiled by I. Zaginanco

Proofreader M. Demchik

Subscription

Claims (2)

Claim 1, A device for displaying information on a cathode ray tube (CRT) screen, comprising a master oscillator, the output of which is connected to the input of the synchronization unit, the first and second outputs are connected respectively to the inputs of the horizontal and vertical units, the outputs of which are the outputs of the device for connecting . CRT deflecting system, the third and fourth outputs of the synchronization unit are connected to the first and second inputs of the OR element, the third input of which is connected to the output of the first switch, the information inputs of the first group, the information input and information inputs of the second group of the first switch are connected respectively to the outputs of the first group , the fifth output and outputs of the second group of the synchronization unit, the control input of the first switch is connected to the output of the decoder, the inputs of which are connected to the outputs of the unit quickly memory connected to the address inputs of the character generator, the control inputs of which are connected to the outputs of the group of the first switch, the outputs of the character generator are connected to the information inputs of the video shaper, the output of which is connected to the CRT modulator, the control input and the sync inputs of the video shaper are connected respectively to the output = house of the OR element and the outputs of the third synchronization block groups 7 .1427412 input inputs of the RAM block are the address inputs of the device, the write control input is the first control input of the device, characterized in that, in order to improve performance and simplify the device, it contains an address register, second and third switches, information inputs are register iq Addresses are connected to the device's address inputs, the address register write control input is the device sync input, the read control input is the second device control input 15, the addresses of the address register group CAs are connected to the information inputs of the first group of the second switch, the information inputs of the second and third groups of which are connected jo respectively with the outputs of the third switch and the outputs of the fourth group of the synchronization block, the first output of the address register is connected to the control input of the second switch, 25 outputs of which are connected to the address inputs of the block RAM, the second output of the address register is connected to the first control input of the third switch, and the third output is to the input 39 of the reading control unit of the opera ivnoy memory, data inputs of the first and second groups. · a third switch connected to the outputs of the fifth and sixth groups of the synchronization unit 35 in toVi swarms third switch control input connected to the output of the decoder. 2. The device according to claim 1, characterized in that the syn- - ₄ θ timing block contains a sign element counter, the counting input of which is the block input, the outputs of the sign element counter group are the outputs of the third block group, counter ... characters, counting input which is connected to the overflow output of the counters of the sign elements, the first television line counter, the outputs of which are the outputs of the first group, and the second output is the fifth output of the block, and the counting input is connected to the first output of the lower dimming and sync pulse shaper, w A swarm output of which is connected to the reset input of the character counter, and the third and fourth outputs are the third and first outputs of the block, the first AND element, the inputs of which are connected to the third and fourth outputs of the first television line counter, the output of the And element is connected to the control input of the frame shaper of the quenching and sync pulses, the input of the reset of the first counter of television lines and the counting input of the sign-line counter, the group outputs of which are the outputs of the fifth and sixth groups of the block and are connected to information to the input inputs of the driver blanking and clock pulses, the sync input of which is connected to the overflow output of the sign-line counter, the first output of the driver blanking and clock pulses is the fourth output of the block and connected to the control input of the second counter of television lines, and the second output is the second output of the block, the reset input of the second counter television lines connected to the output of the second element And, and its outputs are the outputs of the second group of the block, the second and third outputs of the second counter of bodies of the visual lines are connected to the inputs of the second element And, 'The counting input of the second television line counter is connected to the second output of the first television line counter, the first output of the sign element counter is connected to the installation input of the line blanking and sync pulses, the first and second ί clock inputs of which are connected respectively to the fourth output counter elements of the sign and. the symbol counter overflow output, the outputs of which and the fourth sign element counter output are the outputs of the fourth block group, the sign element counter overflow output is connected to the control input of the line blanking and sync pulse shaper, the information inputs of which are connected to the corresponding outputs. I will give a character counter, the third and fourth outputs of the shaper of the lower quenching and sync pulses are respectively the third and first outputs of the block.