SU1339628A1 - Device for displaying information on television indicator screen - Google Patents

Abstract

The invention relates to automation, computational and television technology and can be used when interpreting symbolic information on familiarity to the screens of television indicators. The purpose of the invention is to expand the field of application of the device due to the possibility of separating arbitrary sections of a television frame by smoothly varying their slope along the X axis with an accuracy of one familiarity. This is achieved by introducing a high frequency generator 1, a second 4 and a third of its 2 frequency dividers, a second horizontal sampling counter 5, first 7 and second 11 switches, counters 8 and 16 addresses, a permanent memory block 9, a third horizontal sampling counter 10 , the third decoder 13, the trigger 25, the register 17 and the corresponding functional connections. In the device, the allocation of characters occurs due to the introduction of the corresponding delays at the installation input of the counter 3 horizontal sampling time intervals. 2 Il. from $ cl

Description

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

The purpose of the invention is to expand the field of application of the device by allowing arbitrary portions of the television frame to be distinguished by a smooth dynamic 1-1 varying slope of them along the X axis up to the familiarity.

Fig, 1 shows a functional diagram of the device; 2 shows a fragment of a television image.

The device contains a high-frequency generator 1, necessary for generating a clock frequency, which synchronizes the operation of all blocks of the device (the frequency of generation of the high-frequency generator 1 is significantly higher than the horizontal sampling frequency of the image), the third divider 2 frequencies serving for. dividing the frequency produced by the generator 1 to a value equal to the horizontal sampling frequency of the image, the first horizontal sampling counter 3 generating a horizontal grid of sampling frequencies of the image, the second 4 frequency divider to receive a 2 MHz frequency, the second horizontal sampling counter 5 necessary for dividing frequency generated by the generator, up to the value of the horizontal sampling frequency of the image, as well as for shifts of rows of the decomposition matrix intervals smaller than the intervals between two adjacent samples of the horizontal image sampling rate, the first frequency divider 6, serving to divide the IGF frequency, the first switch 7, designed to alternately connect the output of the divider 6 to the summing or subtracting inputs of the first address counter 8, which serves for generating higher bits of the setpoint code, block 9 of the permanent memory for storing the setpoint values defining the shift of each specific row, the decomposition matrix of characters, t th horizontal sampling counter 10 (ustano0

five

0

0

a full-time input is needed to generate horizontal image sampling frequencies and shift the rows of character decomposition matrices by distances, multiple intervals between two adjacent samples of horizontal image sampling frequency, second switch 11, first decoder 12 serving to form image horizontal sampling frequency pulses, decoder 13 containing a decoder 14o and a decoder 15 N, the performance of the corresponding states O and N of the counter 8), the second counter 16 of the address enny for generating LSBs matrix rows offset setting codes decomposition pair of symbols horizontally, the register 17, the timing generator 1st serving for complete TV signal .vyrabotki - sinh- rosmesi and frequencies coming within its composition, CGR and GIS, for neobhodimk

5 synchronization of operation of the device, a vertical sampling counter 19, used to generate a grid of vertical image sampling frequencies, a second decoder 20 for generating pulse sequences of vertical image sampling frequencies, a character generator 21, a video signal generator 22, a television indicator 23 for displaying c ) information, a block of RAM 24, designed to record and store, during regeneration, the codes of displayed characters along with Signs of their vu, Helen, and trigger 25.

The device works as follows.

But to the computer inputs of the computer, the character codes and bits of the n: eznak their allocation are recorded: from the operational memory block 24, from where the frequency coming from the output of the first decoder 12 to the control input of the RAM memory 24, depending on the number displayed in one line of text on the television indicator 23, are fed to the input character generator 21. In the last codes

The g symbols are converted into CRT illumination pulses. Signal, strobing the issuance of pulses of illumination of a CRT beam from the character generator 21 to the input of the imager 22 video signals, post5

0

five

0

3

It goes to the input of the character generator 21 from the first output of the first decoder 12. The pulses determining the character generator 21’s vertical output of the CRT beam illuminating matrixes of decomposition of the characters arrive at the second input of the character generator JTopa 21 from the output of the second decoder 20. Video signal generator 22 performs the summation function pulses of illumination of a CRT beam with a television clock signal, which is fed to the synchronous input of the video signal maker 22 from the third output of the clock generator 18, as well as the matching function The driver of 22 video signals with the input of the television indicator 23 by electrical parameters.

Counter 19 and counter 3 sample the digital scanning function vertically and horizontally.

The second switch 11, controlled by the address input by the state of the register 17, connects the input of the first decoder 12 either to the output of the horizontal sampling counter 3, or to the output of the horizontal sampling counter 10. The state of register 17 is determined by the presence or absence of a bit of the character allocation symbol dynamic tilt. Such a sign bit is written along with the character codes in the RAM block 24 in a special incremental memory cells.

In the absence of signs of symbols in the characters, the second switch 11 connects the output of counter 3 to the input of the first decoder 12. The operation of the device in this case is no different from the work of the known television-type information display device when displaying alphanumeric information on familiarity. Especially since the frequency supplied to the summing input of the horizontal sampling counter 3 is equal to the value of the horizontal sampling frequency of the image, which is formed by dividing by divider 2 the frequency generated by high frequency generator 1.

If there is a sign that the symbol is being allocated, the output of the horizontal sampling counter 10 is connected to the input of the decoder I2. To summarize39628

The input of this counter also receives the horizontal sampling rate of the image, which is formed at the output of the higher bit of the counter 5. The division factors of the counter 5 and the divider 2 frequencies are the same. The presence of the installation inputs in the counters 10 and 5 allows the device 0 to inject in them a phase shift, which is expressed visually in the shift of the elements of the character decomposition lines along the vertical, displayed on respectively. related lines of television

15 sweeps right or left horizontally. Shifting the elements of decomposition by distances that are multiples of the distance between two adjacent samples of the digital sweep function horizontally, is achieved by recording the setpoints during the MIS at the installation input of the counter 10, and for distances smaller than this interval when entering the settings into the counter 5, since the latter operates at a frequency greater than the horizontal sampling frequency of the image (e.g., 100 MHz at the horizontal sampling frequency value

30 10 MHz).,

The joint control of the counters 10 and 5 on the installation inputs during the GIS provides a high-precision shift of the rows of the image decomposition matrices horizontally. Codes of settings for the installation inputs of counters 5 and 10 come from the outputs of block 9 (one part of the code bits goes to counter 5, and the other to the counter

40 10) and entered into them during GIS, which are fed to their synchronous inputs, strobe the entry of information on the installation inputs of these counters.

45 The address of block 9 is formed from a set of output bits of counters 16 and 8. The input of counter 6 receives pulses of GIS, determined by the very output of the block

50 9 to the beginning of the forward stroke of each line of the TV - sweep code of a certain phase shift. As a result, the characters are inclined at an angle, which is determined by shift codes, flashed with 55 in block 9. Changing bits

the address of block 9, determined by counter 8, corresponds to a change in the angle of inclination of the image to the X axis. A monotonous change in the state of the counter35

8 corresponds to the arrays of set codes read during the OIM from block 9, which set the image to have a continuously varying angle of inclination. The rate of change of the state of the counter 8 determines the speed of the dynamic tilt of the image of the characters to be separated on the screen. This, in turn, is determined by the division factor of the frequency divider 6, to the input of which CGI pulses come from the first output of the clock generator.

The oscillatory tilt of the characters from side to side is due to the fact that the state of the counter 8 which determines the number of the array — the setting codes from block 9 corresponding to different image tilt angles — monotonously changes in the I side of the increase, then in the direction of the decrease , as the counting pulses go then to its summing, then to its subtracting inputs.

When the counter 8 reaches the state O, the decoder 14 O produces a pulse changing the state of the trigger 25 to the opposite, as a result of which the switch 7 connects the output of the frequency divider 6 to the summing input of the counter 8. Now when the counter reaches 8, the state N decrypts the decoder 15 N, the trigger 25 changes its state, the output of the frequency divider 6 is connected to the subtractive input of the counter 8 and the images on the screen are tilted, to the other side, etc.

The N binary code that the 15 N decoder allocates determines the amount of symbol slope.

Claims (1)

Invention Formula A device for displaying information on the screen of a television indicator, containing a synchronous generator whose first output is connected to the input of the first frequency divider and to the summing input of a vertical sampling counter, the second output to the synchronous inputs of the first horizontal counter and a vertical sampling counter, the first decoder, the first output of which is connected to the gate the input of the character generator and the second output is to the address input of the operational unit memory information inputs of which are device inputs, the output of the vertical sampling counter is connected to the input of the second decoder, the outputs of which are connected to the control inputs of the RAM and the character generator, respectively, the output of which is connected to the information input of the video signal generator synchronous input which is connected to the third output of the synchronous generator, and its output is connected to the video input of the television indicator, the first output of the operational memory unit is connected to the information by the input of the character generator, so that, in order to expand the field of application of the device by allowing arbitrary sections of the television frame to be separated by a smooth, dynamically changing slope of them along the X axis with an accuracy of one familiarity it 5 contains a high-frequency generator, the second and third frequency dividers, the second and third horizontal sampling counters, a block of permanent memory, two switches, a register, 0 two address counters, a trigger and a third decoder, the inputs of which are connected to the output of the first address counter, are connected1 to the first address input of the memory block, 5 the second address input of which is connected to the output of the second address counter, the summing input of which and the sync inputs of the second and third horizontal sampling counters are connected to the second output of the clock generator, the installation inputs of the second and third horizontal sampling counters are connected to the outputs of the fixed memory block, the summing inputs - respectively, with the output of the high-frequency generator connected to the inputs of the second and third frequency dividers, and the output of the second counter of the horizontal discretization and, the output of the first frequency divider is connected to the information input of the first switch, the control input of which is connected to the trigger output, the setting inputs 5 of which are connected to the corresponding outputs of the third decoder, the outputs of the first switch are connected. respectively with tmiruyuschim and subtractive inputs pernrgo counter ad5 the output of the second frequency divider is connected to the synchronous input of the synchronous generator, the output of the second frequency divider is connected to the summing input of the first horizontal sampling counter, the output of which is connected to the first information input of the second switch, the second NEobhop {mo KP / IH whose information input is connected to the output of the third horizontal sampling counter, and the destination input is to the register output, the input of which is connected to the second output of the random access memory unit, the output of the second switch is connected to the input of the first decoder.