RU1833916C - Device for signals forming on tv screen - Google Patents

Abstract

Usage: automation. And computer engineering, information display systems. The inventive device contains 1 memory unit (1), 1 character code decoder (2), 1 character generator (3), 2 line counts (4.9), 1 line code decoder (5), 1 shift register (6), 1 television indicator (7), 1 clock generator (8), 2 switches (10,11). 1-2-3-11-6-7, 8-6, 1-11, 1-10-5-3, 4-10, 9-10. 6 ill.

Description

The invention relates to automation and computer technology and can be used in information display systems.

The purpose of the invention is to expand the scope of the device by increasing the range of signs and symbols by displaying signs and symbols rotated 180 °.

In FIG. 1 shows a functional diagram of a device; in FIG. 2 is a functional diagram of a first switch; in Fig. 3 is a functional diagram of a second switch; in FIG. 4 is an example of a computer control word; in FIG. 5 is an example of displaying information by a known device; FIG. 6 is an example of information display by the proposed device.

It contains a memory unit 1, a character code decoder 2, a character generator 3, a first 4 line counter, a line code decoder 5, a shift register 6, a television indicator 7, a clock generator 8, and a second

counter 9 lines, the second switch 10, the first switch 11. Position 12 indicates the input pulse line frequency.

The first switch 10 (Fig. 2) is designed to connect to the input of the decoder 5 the line code of the output of the counter of 4 lines (in the usual display of signs and symbols, in which the information at the input of the decoder 5 of the line code changes from one to the maximum number of lines of decomposition) or counter 9 lines (when displaying signs and symbols rotated 180 °, at which the information at the input of line code decoder 5 changes from the maximum number of lines of decomposition to one) and contains multiplexers 13.

The switch 10 can be implemented, for example, on standard circuits of the series 133,155, etc.

The second switch 11 (Fig. 3) is designed to redirect bits of the information word from the output of the character generator 3 at the first input (input

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receiving information) register 6 shift. In the usual display of signs and symbols, the information at the input of the shift register 6 changes from the first to the last decomposition element, and when. displaying signs and symbols rotated through 180 °, information at the input of shift register 6 changes from the last to the first decomposition element. Switch 11 contains multiplexers 14. Switch 11 can be implemented on standard circuits of the 133,155 series and the like.

The counter 9 lines (reversible) is intended for organizations to select lines of decomposition, starting from the last to the first and can be implemented on standard circuits of the 136, 100 series, etc. The preset inputs for a 4-line counter and a 9-line counter are not shown.

The device operates as follows.

Data containing information about the character code, the sign of image rotation by 180 ° (Fig. 4) is recorded in parallel code in the memory unit 1. In the time intervals of the indication mode, from the output of memory unit 1, the character code is sent to the input of the character code decoder 2, and the 180 ° turn sign code is fed to the control inputs of the switches 10 and 11. From the decoder code 2 output: the characters, the signal corresponding to the sign to be decoded or to a symbol, it goes to the address input of the character generator 3. Simultaneously, from the output of the counter 4 lines, or from the output of the counter 9 lines through the switch 10. and the decoder 5 lines of code to the control input of the character generator 3 receives the signal of the decrypted line. Under the influence of simultaneously received signals, the character generator 3, in which the positional program for highlighting the displayed alphabet of characters and symbols is stored, generates at the output in parallel form the pulse code combinations of the highlight words that correspond to the line being drawn, which through the switch 11 are connected to the information input register 6 shift information from the output of character generator 3, are fed to the information input of register 6 shift under the action of clock pulses received to the control input of the shift register 6 from the output of the clock generator 8, the register 6 converts the backlight words from parallel to serial. Formed at the output of the register 6, the video backlight signal is input to the television indicator 7.

It controls the operation of the first 10 and second 11 switches of the bit of the computer control word (Fig. 4) corresponding to the code of the Inverted, i.e. rotated 180 °

images of a sign or symbol. If this section contains information O, then the switch 10 connects the output of the counter 4 lines to the input of the decoder 5, and the switch 11 connects to the information

0 to the input of register 6 information from the output of the character generator 3 without forwarding bits of the code combination of the highlight words (decomposition elements corresponding to the lower bits of the code combination

The 5 highlight words are displayed first, and the decomposition elements corresponding to the high-order bits are displayed last), with the signs and symbols being displayed without 180 ° rotation. If information 1 is contained in the bit corresponding to the code of the inverted image, then the switch 10 connects the output of the counter 9 lines to the input of the decoder 5, and the switch 11 connects the information from the output of the character generator 3 to the information input 5 of the register 6 by redirecting bits of the code combination Highlight words (decomposition elements corresponding to the low-order bits of the code combination

0 highlight words are displayed last, and decompositions corresponding to high-order bits are displayed first), with signs and symbols displayed rotated 180 °.

5 Thus, only those characters and symbols will be displayed rotated 180 ° for which, in the category of the control word of the computer, corresponding to the code of the inverted image will be contained

0 information, e. in one line at the same time both ordinary signs and symbols can be displayed, as well as signs and symbols rotated 180 ° (both individual and any groups thereof).

5 FIG. 5 illustrates an example of the display of character B by a known device.

FIG. 6 illustrates an example of the display of the sign B rotated 180 ° by the device of the invention.

0

The proposed device for forming characters on the screen of a television indicator provides an extension of the scope of the device by increasing the range of signs and symbols by displaying signs and symbols, both without rotation and rotated 180 °, which can be used, for example, when displaying text parts. tables, standard forms, etc.

Claims (1)

The formula is invented and. A device for forming characters on a television indicator screen, comprising a memory unit whose input is the input of the device, and the output is connected to the control inputs of the first and second switches and the input of the decoder, a character code whose output is connected to the address input of the character generator, the control input which is connected to the output of the line code decoder, a clock, the output of which is connected to the control input of the shift register, the output of which is connected to the input of the television indicator, and the first etchik rows, characterized in that, in order to expand the scope of the device by increasing the range of characters and characters by displaying characters and characters rotated 180 °, the device contains a three-time line counter, the inputs of the first and second line counts are pulse frequency line input, and the outputs are connected to the information inputs of the second switch, the output of which is connected to the input of the line code decoder, the output of the character generator is connected to the information input of the first switch, the output of which is connected to the information input of the shift register. OP) J from ъ.9 game 2 fg / .1 K & A.5 / {od npuStfQKQ Lerayermu ™ 0 0 o PaMfejVt & n FC2.3. to S / i.e GO 3H0X & Fig: 4 Riga .5