SU1367036A1 - Device for displaying information on television set screen - Google Patents

Abstract

The invention relates to automation, computing and television technology, and can be used in the output of symbolic information on television indicator screens. The purpose of the invention is to expand the field of application of the device by selecting the components of the symbol information by oscillating by interleaving them in the horizontal direction, which is achieved by introducing a low-frequency generator 4, a reversible counter 6, a decoder 7, a trigger 8, a prohibition element 9, a register 10, a multiplexer 11 and a second counter 18 points with corresponding functional connections. In the proposed device, smooth oscillatory alternation of individual symbols or their groups is carried out symmetrically at their main location at an optimum speed for the operator to perceive within pure fields in which there are all her characters, which makes it possible to reduce operator fatigue. with S (L with

Description

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The invention relates to automation, computing and television technology, and can be used in the output of symbolic information on television indicator screens.

The purpose of the invention is to expand the field of application of the device by extracting the components of the symbols by oscillating their movement in the horizontal direction.

FIG. 1 shows a functional diagram of the device; figure 2 is a functional diagram of the sync generator. I

The device contains a random-access memory unit 1 intended for recording and storing, on the iTB screen, the regeneration codes of displayed symbols or graphic elements and the codes of signs of their sharing by a smooth oscillatory motion along the horizontal of the screen; a generator of 2 symbols necessary for converting the codes of the displayed pixels, both real and non-separable into consecutive impulse series, further modulating the CRT beam of the television receiver in accordance with the geometry of the displayed 3HeMeHfoB images; a video signal shaping unit 3, for receiving the total full television signal and matching it electrically with the input impedance of the TV indicator (not shown in FIG. 1); low-frequency generator 4, which is used to set the most convenient for the operator to perceive the speed of the oscillatory movement of the extracted information; switch 5; reversible counter 6; a decoder 7 serving to select the zero state of counter 6; trigger 8 (for example, 1K-type); prohibition element 9; register 10, multiplexer 11; shaper 12 line scan; a synchronous generator 13, which is used to form the full television sync signal required for operation of standard television receivers comprising this signal: frame and line damping pulses, at output 14, and also for generating a clock frequency; counter 15 lines; shaper 16 scanner sweep; the first counter is 17 points (it is used to count the horizontal damping pulses of GIS); second counter

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18 points, which also performs the function of counting pulses of the OTT, but in the mode of variable initial (by the time the direct code begins code frame scanner of the receiver's TV screen) installation.

Position 19 denotes the video output of the device, positions 20-27 denote the inputs and outputs of the device blocks, and positions 28, 29 denote the information and control inputs of the device, respectively.

The synchronous generator 13 contains a clock generator 30, a frequency divider 31, a counter 32 with a transform coefficient. reschet 128, decoder 33, the counter 34 with a conversion factor of 625, decoders 35-42, triggers 43-46, analog adder 47 ..

The device works as follows.

The character codes, along with the signs of their distribution, are received at input 28 from the control computer (not shown) to memory block 1, where, at the television sweep frequency, character codes are read and fed to the information inputs of the 2 character generator. In the latter, the character codes are converted into a signal, which is then fed into the video signal generation unit 3, summed with. TV clock signal and enters the video output of the device, i.e. to a television receiver (not shown).

On. the counting (summing) input of the counter is 15 lines, the pulses of the SGI are generated, which are generated by the synchro-generator 13, whose OIG is applied to the input of the installation in O of the counter 15. The signal from the output of the counter of 15 lines is fed to the imaging unit 16. From the outputs of the latter, the pulse sequences are fed to the control input of a generator of 2 characters to identify the row number of the character decomposition matrix and to the address inputs of memory block 1 to control the reading of information from it (in particular, to allocate time intervals allowing the For example, during the duration of the reverse television sweep and in the period of the duration of the intervals between the displayed lines of text).

Clock frequency horizontal sampling on the counting (summing.). inputs of the first 17 and second 18

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counters, points comes from the output of the prohibition element 9, to the second input of which there are pulses of GIS, prohibiting the passage of the clock frequency during the action of the pulses of the OIG.

The counter 17 is set to the initial (zero) state at the input O of the pulses of the MSS generated by the synchronizing generator 13.

During the absence of an attribute, the characters that are from memory 1 are fed to the input of register 10 (its state, for example, zero) and information from its output goes to the address input of multiplexer 11, from the output of which the information is transmitted to the information input of the former 12 Scanning signals from the outputs of which are fed to the control input of the generator of 2 characters and to the second address inputs of memory 1 and gates reading information from its cells.

As long as the input of the imaging unit 12 is connected to the output of the counter (in register 10 there is no indication of the selection) the information displayed on the TV screen is always rigidly linked to the moment of the termination of the OIG (the beginning of the forward stroke of the horizontal scanning TV).

The counting input of the counter 18, as well as the counting input of the counter 17, receives the horizontal sampling rate from the output of the prohibition element 9. Unlike counter 17, the counter 18 is set up by the pulses of the OTG to the non-zero state — its initial state is determined by the state of its setup input. The pulses of the SGI, entering the control input by entering the information on the setup inputs of the counter 18, set the counter 18 to the state determined by the state of the reversible counter 6 to the start of the forward stroke of the horizontal TV scan.

Thus, if the initial state of the counter 18 (determined by the state of its installation inputs) monotonously changes in the direction of increasing or decreasing its binary equivalent, the information displayed on the screen with the discreteness of one decomposition element of the decomposition matrix of symbols is determined by the horizontal sampling rate - tion is shifted horizontally to the left or right of the screen.

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The initial state of the counter 18 is set by the counter 6, since it is from its outputs that the information goes to the installation input of the counter 18. The same state of the counter 6 monotonously changes with the arrival of each pulse to its summing or subtracting (counting) inputs from the controlled generator 4 low frequency. The output of the latter is connected by the switch 5, depending on the state of its zero input, either to the summing or to the subtractive inputs. The control input of the switch 5 is controlled by the state of the trigger 8. The latter is set into O at the moment when the decoder 7 depresses the zero state of the counter 6 and, acting on the control input of the switch 5, connects the output of the generator 4 to the summing input of the counter 6 At the time of the occurrence of the highest-order unit of the last counter 6, the trigger 8 changes its state to the opposite, therefore, the output of the low-frequency generator 4 is connected to the subtractive input of counter 6, and so on. The output frequency, low frequency generator 4 is controlled by a computer.

The characters, the signs of the allocation of which are recorded in memory block 1, stand out against the background of others; no signs of selection, symbols — with a smooth oscillating movement in the horizontal direction, because when the oscillating symbol or group of symbols without the indication of a gap, the register 10 is zero and the output of the counter 17 is connected to the input of the driver 12, therefore, the symbol or their group is displayed static. When a character or group of characters has the characteristics of the selection recorded in memory block 1 when they are displayed, register 10 is set to one and the input of driver 12 is connected to the output of counter 18; therefore, a symbol or a group of them are displayed smoothly oscillating with movement in the horizontal direction.

The clock generator works as follows.

The horizontal sampling clock frequency, which determines the horizontal resolution of the TV picture, is formed by the clock generator 30 and is fed to the input of the frequency divider 31. The latter divides it

to the value required to form a standard T3 sync signal.

Decoders 35 and 37 of the front inject, respectively, the moment of the beginning

 the formation of pulses SGI and FID (small sync pulses) and simultaneously set the triggers 43 and 44, forming the duration of these

Signals in a single state. The decoders 36 and 38 of the pulse decay highlight the moments of the end of the pulse duration, respectively, SGI and FID, and simultaneously set the triggers 43 and 44 to the zero state.

The decoder 33 extracts double-line frequency pulses to the summing (clock) input of a counter 34, dividing this frequency by 625 and thereby forming a pulse following period of 50 Hz (field period). Decoders 39 and 41 of the front select, respectively, the moments of the onset of the formation of XI pulses (personnel sync pulses) and OIG, and at the same time establish three heights 45 and 46, which form the duration of these signals into a single state. Pulse decoding 40 and 42 pulses highlight the end times of pulses XI and OIG, respectively, and at the same time set the triggers 45 and 46 to zero states. Analog adder 47, the sum of the amplitude of the pulses of the OIG, XI, FID, SGI, generates a television sync signal.

Formula of the invention

A device for displaying information on the screen of a television processor, containing a RAM block, whose information input is an information input of a device, whose outputs, besides the output of the digit of the character code of the symbol, are connected to the address inputs of the character generator, the output of which connected to the information input of the video signal conditioning unit, the clock input of which is connected to the first output of the sync generator and its output is the video output of the device, the second output of the sync generator torus connected to the input

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The settings in O of the row counter, the output of which is connected to the input of the vertical scanner, the first output of which is connected to the same input of the character generator, and the second output - to the control input of the main memory unit whose address is the first input of which is connected to the first exit shaper lowercase

sweep, the second output of which is connected to the control input of characters, the third output of the clock generator is connected to the counting input of the row counter and the installation input to the first point counter, and a switch, characterized in that, in order to expand the field of application of the device by selecting the components of the symbols by oscillating movement them in the horizontal direction, it contains a low-frequency generator, the input of which is the control input of the device, and the output is connected to the information input of the switch, reversible a counter whose summing and subtracting inputs are connected to the switch outputs, a decoder whose inputs are connected to the outputs of a reversible counter, a trigger, an inhibitor element, a second point counter, a multiplexer and a register whose input is connected to an output of a bit code sign of the RAM block symbol and the output - with the address input of the multiplexer, the control inputs of which are connected to the outputs of the first and second point counters, and the output - to the input of the horizontal ripper driver, the outputs of the reverse counter Dineny with information inputs of the second point counter, the installation input in O of which is connected to the third output of the synchronous generator, the fourth output of which is connected to the first input of the prohibition element, the second input of which is connected to the third output of the synchronous generator, and the output connected to the counting inputs of the first and second counters points, the output of the decoder is connected to the input of the installation in the O flip-flop, the installation input in 1 of which is connected to the output of the higher bit of the reversible counter, the output of the flip-flop is connected to the control input y-, tator.

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Claims (1)

Claim A device for displaying information on the screen of a television receiver containing a random access memory block, the information input of which is the information input of the device, the outputs of which, in addition to the discharge of the code for the symbol selection symbol, are connected to the address inputs of the symbol generator, the output of which is connected to the information input of the video signal generating unit, whose clock input is connected to the first output of the clock, and its output is the output of the device’s video signal, the second output of the clock connected to the input of the setting at 0 line counter, the output of which is connected to the input of the frame scanner, the first output of which is connected to the clock input of the symbol generator, and the second output is connected to the control input of the main memory block, the address input of which is connected to the first output of the line scanner, the second output of which is connected to the control input of the characters, the third output of the clock generator is connected to the counting input of the line counter and the installation input to 0 of the first point counter, and a switch the fact that, in order to expand the scope of the device by highlighting the components of the symbols by oscillating them in the horizontal direction, it contains a low-frequency generator, the input of which is the control input of the device, and the output is connected to the information input of the switch, a reversible counter that summarizes and subtracts the inputs of which connected to the outputs of the switch, a decoder whose inputs are connected to the outputs of the reversible counter, trigger, prohibition element, second point counter, multiplexer and regis mp, whose input is connected to the output vscheleniya tag code digit symbol memory unit, and an output - to the address input of the multiplexer, whose control inputs are connected to outputs of the first and second counters points, and the output - to the input of the horizontal ^ raEvertki outputs PE ⁴ the versioned counter is connected to the information inputs of the second point counter, the input of which is set to 0, is connected to the third output of the clock generator, the fourth output of which is connected to the first input of the inhibit element, the second input of which is connected It is connected to the third output of the synchro-generator, and the output is connected to the counting inputs of the first and second point counters, the decoder output is connected to the trigger input at trigger 0, the trigger input of which is connected to the high-order output of the reverse counter, the trigger output is connected to the control input of the commutator , tator.