SU1037329A1 - Device for displaying data on cathode-ray tube screen - Google Patents

Abstract

1.DELECTION FOR DISPLAYING INFORMATION ON SCREEN OF ELECTRON-BEAM PIPE, containing keyboard, main memory unit, pointer control unit, first auxiliary memory unit, synchronization unit, frequency divider unit, first switch, first shift register, shape unit (video signals, output which is connected to the CRT modulator, and the inputs to the outputs of the first shift register, the pointer control unit, and the synchronization unit connected to the input of the pointer control unit directly and .. via the unit The frequency modules to the input of the first switch, the second input of which is connected to the keyboard, one of its outputs are connected to the inputs of the first shift register, the first auxiliary memory block and the main memory block, the output of which is connected to the second input of the first auxiliary memory block,. the main memory block inputs are connected to the keyboard and the second output of the pointer control block, from which, in order to expand the field of application of the device by displaying graphs of periodic functions c. various image sizes — the sequencer of the increments of the ordinate of the graph, the second block of the memory memory and the second switch, the output of which is connected to the second input of the first shift register, and the inputs are connected to the output of the first block of the auxiliary memory, keyboard; the input of the synchronization unit, the output of the main memory unit and the input of the increment generator of the ordinate of the graph, the second output of which is connected to the input of the synchronization unit, another output of the first switch is connected to the second input of the second auxiliary memory unit. 2. Device pop. G, characterized in that the shaper of increments of the ordinate of the graph contains the second, third and fourth pos D X) is the newly connected shift registers, the first and second inverters and adders, the third switch, which moves to the outputs: o adders, the first inputs of which are connected to the output of the third shift of the UD of the ac register, and their second inputs through inverters are connected to the outputs of the second and fourth shift registers, the control input of the switch is connected to the output of the third shift t) (of its register).

Description

The invention relates to automation and computer technology and is intended for displaying character raster (point-positional) and certain types of graphic information, as well as for input and editing. character information from the keypad.

A device for displaying information on the screen of a cathode-ray tube is known, comprising serially connected symbol memory, a register, a symbol generator, as well as a control unit connected to a symbol memory block, a register, a symbol generator, and The CTB of the cathode-ray I tube, with a raster memory block, is associated with a register that is connected to the modulation unit and the symbol generator Cl.

The residuals of this device are related to the following: lack of the possibility of displaying graphs of periodic functions on the screen; the inability of t a3Mepa changing alphanumeric characters; the cost of the device, since the implementation requires a large raster memory capacity, which is about 4-5 times larger than the main memory block.

These drawbacks narrow the scope of application of the device.

The closest in technical essence to the invention is a device for displaying information on a screen of a cathode ray tube, comprising a serially connected keyboard unit, a main memory unit associated with a pointer control unit, an auxiliary memory unit, a shift register, a video signal shaping unit connected to the unit the synchronization unit and the pointer control unit, and the cathode ray tube, as well as the frequency divider unit, connected with the input to the synchronization unit, and the output with the commutator, ravl yuschy input of which is connected to the keyboard unit, and outputs - to the block of the main memory, and a shift register unit vspomoyatelnoy memory (2j.

The disadvantages of the known device are the narrow field of application of Ji3-3 i the absence of the possibility of mapping; 1 of the dimensions of the functions of different sizes and the fact that it does not allow to display point-like information | if it comes from a source of information to the block of the main memory jae code point of the point symbol to display on the screen i. in finished form, when the turns of the HH. .and about i yo ehodns position code means ,,

That this point should be highlighted or darkened. Such a situation occurs in most practical cases, and then such point-like information must be converted to a point symbol code before being written to the main memory block.

The aim of the invention is to expand the field of application of the device for displaying graphs of periodic functions with different image sizes.

The goal is achieved in that the device containing the keyboard, the main memory unit, the pointer control unit, the first auxiliary memory unit, the synchronization unit, the frequency divider unit, the first switch, the first shift register, the video signal shaping unit, the output of which is connected to the modulator CRT, and INPUTS - with the outputs of the first shift register, pointer control unit and synchronization unit connected to the input of the pointer control unit directly through the frequency divider unit to the first input of the second switch, the second input of which is connected to the keyboard, 1tsi from its outputs are connected to the inputs of the first shift register, the first block of auxiliary memory and the main memory block, the output of which is connected to the second input of the first block of auxiliary memory, the inputs of the main the memory is connected to the clave, the second output of the pointer control block, the serially connected increment generator of the ordinate of the graph, the second BSPO-magnet memory and the second co-switch, the output of which is connected to the second

the input of the first shift register, and the inputs are connected to the output of the first auxiliary memory block, keyboard, input of the synchronization block, output of the main memory block and input of the increment generator of the ordinate of the graph, the second output of which is connected to the input of the synchronization block; another output of the first switch is connected to the second the input of the second block of auxiliary memory.

Moreover, the incremental shaper of the ordinates contains the second, third, and fourth sequentially connected cjHBjiraJ & 4He registers, the first and second inverters and summators, the third KONWiyTaTop, all of which are connected to the outputs of summatr, the first inputs of which are connected to the output of the third shift register, a their Vto) s entrances through. Inerto G1 is connected to the outputs of the second and fourth shift registers, the control input of the switch is connected to the output of the third shift register. Figure 1 shows a block diagram of a device for displaying information on the screen of the FF tube; Fig. 2 shows an embodiment of an increment generator of the ordinates of the graph; FIG. 3 shows the principle of forming graphs of periodic functions. The device includes a keyboard 1 main memory unit 2, a pointer control unit 3, first device auxiliary memory unit 4, a unit. 5 syncronization, block b of frequency dividers first switch 7, first shift ady register 8, block E video signal generation, electron beam tube (CRT) 10, shaper 11 increments of the ordinate of the graph, second block 12 auxiliary memory, second switch 13. The device works in mode with the information system or with a keyboard, as well as in the image regeneration mode, during which the CRT 10 displays the information recorded in block 2 of the main memory. Both of these modes (exchange mode and image regeneration mode) are practically performed at the same time, which is achieved by pushing the main memory unit 2, whose speed is higher than the exchange rate with information sources. In the exchange mode with the information system, the symbol or dot. The lp positional or graphical information is recorded in the main memory unit 2, the address of which is taken from the pointer control unit 3. To simplify the circuit drawing, write and read block 2. main memory not shown. Record-character or point-by-position, or graphic information in block 2 of the main memory is produced byte-by-byte. In this case, one byte of information represents, respectively, either the code of one symbol, or as the eight elements of the image, point-positional information, and the l and b code of the ordi- nary of the template. The ordinate curve coils from the information system are recorded in the order of display (sweep) of graph points on the screen. Each value of the AV code of the current point of the graph of the curve, recorded in. block 2 of the main memory is accompanied by a sign of an increase or decrease in the crooked value, which has a value of 4, respectively, equal to the ordinate codes of the graph following the maximum (minimum). functions, the sign of the increase (decrease) of the curve changes its value to the opposite, i.e. if it was equal, it becomes equal to O and vice versa. The image regeneration mode is performed as follows. Depending on the image size codes (in frequency, character), and the type of information displayed, specified from the keyboard1, respectively, to the control inputs of the first 7 and second .13 switches from the output of block 2 of the main memory, the information goes to the output of the second switch 13 or directly , either through the first auxiliary memory block 4, or through the sequentially connected shaper 11 increments of the graph ordinates and the second auxiliary memory block 12. From the output of the second switch 1-3, the information inputs of the shift register 8 receive a raster code of either one character, or a position code of eight points, or a raster code of ordinate increment / curve depending on the code of the type of information. In this, depending on. the image size (scale) code the marked codes will have different amounts of information that, after conversion in the shift register B, are received in the video signal conditioning unit 19 for subsequent display on the screen of the CRT 10. The image regeneration mode of the graphical image is carried out as follows. .. Depending on the value of the feature on the {astanie (decay) / increment curve, the ordinates of the function in the former 11 increments of the ordinates of the graph are differently calculated. If the curve increases (the sign of the increase in the curve is 1), then the increment q A, the ordinates of the graph, is equal to the difference between the values of the current A and the leading f points, i.e. d A:, -, - Д, -Х - h If the curve falls off (the curve of the decay of the curve is 0), then the increment of the f fi ordinates of the graph is equal to the difference between the values of the current A, - and the subsequent A ,. points, -Gy. A, - .. The described calculations of the increment M of the graph of the graph in the f oJ of the world less than 11 are performed as follows. Initially, the shift registers 14-15 of block 2 of the main memory are entered byte by byte (- the ordinate code of the graph, the 8th bit is a sign of a rise or fall curve); codes of the previous A, current A, - and the next ordinate of the graph. As a result, the first inputs of the adders 19 and 20 through the inverters 17 and 18 receive the inverted values of the codes of the subsequent A. and the preceding A ordinates of the graph, and the second inputs of these adders have a post; they are the direct codes of the current A ordinates | CURVE. In addition to the Gbg, csTMMaTopoB 19 and 20 signals of logical units are continuously supplied to the carry inputs (fig 42 for its simplification), which is equivalent to feeding them to the first inputs of the ordinate codes in the additional code. Therefore, at the outputs of adders 19 and 20, codes of increments of ordinates are found, - respectively, equal DA .X-A; -Ai,:, and YES, - Depending on; the sign of the increase (decrease) of the curve supplied from the output of the shift register 15 to the control of the input of the switch 21, its output 22 will be the ordinate increment code of the curve, respectively, calculated either by the formula YES, (A, {- A .f or by LA4 Ai- A1CH. The current ordinate code of the graph from output 23 of Form 11 sends the input to the synchronization unit 5, in which it is compared with the code of the current position of the beam on the raster line, thereby determining the beginning of the display of the current increment of the graph on the screen. j-th raster line from block 2 of the main memory to register 14, the record is a new value of the subsequent ordinate of the graph. Then the code of the ordinate that was subsequent will shift to register 15 and become the code of the current order of the ordinates, and that code of the ordinate that was current will shift at 16 and will be the year of the previous ordinance ... Similarly to the body described in the formation of body 11, the increment of the ordinate of the schedule is calculated when it is expanded to the H J + 1) raster line. -FIGD shows a portion of a curve, on which the indices, j and (j + l) denote the values of the ordinates of the curve, respectively, for jy and (j-fl) ty raster lines (at vertical p),. Unlike the symbolic information, when displayed, each subsequent familiarity on the screen has a well-defined address and the size of a part of a symbol on a raster line, in graphic information, the areas of the order of the ordinates of a curve on a raster line do not have a predetermined place (the start of their sweep the ordinates of the curve and contains a different number of bits of information depending on the increment code of the LA- ordinates of the displayed function, .. For example, if the increment code, the ordinates of the curve consist It is of three bits, then the absolute value of the increment on the curve along the raster line (with a vertical scan it will change from one to eight elements, i.e. consist of a maximum of eight highlighted elements. f aym, one grows full-screen, using the auxiliary block 12, to the information input of which the output of the curve ordinate is supplied from the output of the imager 11. A smaller image size of the graphs is required for simultaneous display on the screen Olka Kriya. In the case of incrementing the ordinate of the graph in the shaper 11, the lower bits of the received block 2 of the main memory of the ordinate codes of the graphs are shifted, for example, by one or two bits, if instead of one graph it is required to present two or four graphs on the screen, which is equivalent to increasing the level quantization step by a factor of two or four, respectively. The technical and economic efficiency of the invention lies in expanding the field of application of the device.

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Claims (2)

1. DEVICE FOR DISPLAYING INFORMATION ON THE ELECTRON BEAM TUBE SCREEN, comprising a keyboard, a main memory unit, a pointer control unit, a first auxiliary memory unit, a synchronization unit, a frequency divider unit, a first switch, a first shift register, a video signal conditioning & alarm unit, the output of which is connected to the modulator CRT, and the inputs with the outputs of the first shifting register, the pointer control unit and the synchronization unit connected to the input of the pointer control unit directly and through the divider unit frequency to the input of the first switch, the second input of which is connected to the keyboard, one of its outputs is connected to the inputs of the first shift register, the first auxiliary memory block and the main memory block, the output of which is connected to the second input of the first auxiliary memory block, the inputs of the main memory block are connected to the keyboard and the second output of the pointer control unit, characterized in that, in order to expand the scope of the device by displaying graphs of periodic functions c. various sizes of images, - a graph ordinate increment former, a second auxiliary memory block and a second switch are introduced in it, the output of which is connected to the second input of the first shift register, and the input is connected to the output of the first auxiliary memory block, keyboard; the input of the synchronization block, the output of the main memory block and the input of the graph increment shaper, the second output of which is connected to the input of the synchronization block, the other * output of the first switch is connected to the second input of the second auxiliary memory block. 2. The device according to claim 1, with the proviso that the chart ordinate increment former contains a second, third one) and a fourth sequentially connected shift ₍ registers, first and second inverters and adders, third a switch whose outputs are connected to the outputs of adders, the first inputs of which are connected to the output of the third shift register, * and their second inputs are connected through inverters to the outputs of the second and fourth shift registers, the control input of the switch is connected to the output of the third A shift register. .. SU ... 1037329 1Q37329