SU960920A1 - Data display device - Google Patents

Description

(54) DEVICE FOR DISPLAYING INFORMATION

The invention relates to automation and computing, in particular to indicator devices, and can be used in computer information devices,

Matrix gas-discharge indicators are known, which contain a matrix gas discharge panel, the horizontal and vertical electrodes of which are connected to the outputs of the keys connected to the control unit, and the memory unit 1.

 The closest technical solution to the proposed is a device for displaying information, comprising a jointly connected block, a character generator and the first keys connected to the horizontal tires of the panel and connected in series the first counter, the decoder and the second keys connected to the vertical tires of the panel, a pulse generator connected to a frequency divider connected to a luminance adjustment unit connected to the second: keys, the second counter and the elements AND and OR G2.

The period of regeneration of the image on the screen of the p1-dikatorniy gas discharge panel is equal to

-l- (n-e) ..and)

per f,

reg j

where Tpgr is the regeneration period; fpgr - regeneration frequency;

- ScanCVC maximum frequency

min of impulses;

Cr - minimum frequency of pulses

irvoi) i owls;

ten

m is the number of horizontal electrodes;

n - the number of vertical electro-gdov;

E is the number of vertical electrodes on which at least one cell is illuminated;

h is the number of display elements in the vertical line fragment.

20

When h E expression (1) takes the form

1st pnp

(2)

  "-We-thg

reggde tg3 - sampling time of one cell,

25

; The brightness of the display cell is determined by the sampling time of this cell.

(h:

 t

be

per m -n

30 Hence, the effective display brightness is realizable in a known device in accordance with the Talbot law is equal to Veff B i, where BEF is the effective display brightness; the brightness of the display element during its excitation sampling. The sign of inequality in the alignment (4) takes into account the fact that the cell glow time is shorter than the sample time. The disadvantage of these devices is low effective brightness. Information display when using gas discharge indicator panels with a large number of vertical m and horizontal n electrodes, defined by expression (4), and, consequently, low image quality. The purpose of the invention is to improve the image quality by increasing the brightness of the luminescence. The goal is achieved by the fact that in a known device for displaying information containing i serially connected pulse generator, frequency divider and first counter, decoder and key block connected to vertical panel tires, the horizontal buses of which are connected to the output of the second key block the second decoder and the serially connected memory block and the character generator, the input of the memory block is the first input of the device, a register is entered, two commutators of the serially connected counter, the output is The solder is connected to the input of the second counter, the first output of which is connected to the first input of the first switch, and the second output to the input of the second decoder, the third counter is connected to the second input of the character generator, the output of the fourth counter is connected to the second input of the first switch. which is connected to the second input of the memory unit, the output of which is connected to the first input of the second ko, the second input of which is connected to the output of the character generator, the third input of the second switch is the second input of the device, .vtorogo stroke switch is connected to the input of the register, the output of the connections with soy input of the second output block of the second decoder key is connected to the second input register ,, third and fourth inputs of the first switch are third and fourth inputs. The drawing is structural; device schema. The device contains a pulse generator 1, a frequency divider 2, the first counter 3, the first decoder 4 the first key block 5, the second key block 6, a matrix gas-discharge indicator 7, the second decoder 8, the second switch 9, the second counter 10, the third counter 11, the fourth counter 12, first switch 13, memory block 14, character generator 15, register 16, first 17, second 18, thirds. I 19 and fourth 20 inputs of the device. The device works as follows. In the information recording mode, regardless of the type of information (graphic or digital), input recording mode selection input 19 and the third input of the first switch 13 are far away. A Recording signal is received, and signals from the recording input 20 are passed through the first switch 13 to the second input of block 14. the memory, synchronously with this, from the input 17, which is informational, to the first input of the memory unit 14 receives the character codes in the case of recording symbolic information or points in the case of recording graphic information to be displayed on the display Athorne gas discharge panel 7 thereby is effected subsequent | successive record information in the cell memory block 14 in the order of arrangement of natural points or symbols on display screen gazorazr discharge panel, i.e. each familiarity or point on the panel screen corresponds to a cell or memory bits in memory block 14, and they are arranged in order of increasing addresses of memory cells of memory 14, corresponding to the location of characters or points on the screen of the display gas discharge panel 7 from left to right along the columns ( in one line) and from top to bottom in rows. The remaining nodes of the device in this mode do not participate in the work. Information display mode, a) Display of alphanumeric information. In this mode, the signal from the second (input 18. Selection of the type of information corresponding to the alphanumeric information is fed to the control third input of the second switch 9, while prohibiting the passage of signals from the output of the memory unit to the first input of the register 17 and allowing passage to it signals from the output of the character generator 15, at the same time the signal Display: comes from the third input 19 of the operating mode selection to the control third input of the first switch 13, prohibiting the passage of signals from the output 20 of the record and allowing the signals to pass the first output of the second counter 10 is the number of familiarity rows and the output of the counter 12 is the number of familiarity columns to the second input of the memory block 14. The pulses from the generator output 1 pulses are fed to the input of the divider 2 frequency and from its second output are fed to the counter input 10 lines of the panel having a conversion factor equal to the number of character lines on the panel screen, the address signals from its first output through the first switch 13 are sent to the second input of the block is 14 pag / 1, in this case the sequential interrogation of the cells of the memory block 14 in the rows of the first column and from its output, the code symbols are sent to the first input of the character generator 15, is converted by it into the light codes of the first (left from the second switch 9 successively arrive at the first (informational) input of the register 16, synchronously with this the second (control) input of the register 16, the output of the second decoder 8 receives the signals for writing the illumination codes first,

the second, ..., (I) -th row, thereby, at the output of the register 16, signals are generated to illuminate the entire first vertical electrode of the gas discharge panel 7, which through the second block of keys 6 arrive at the electrodes of the gas discharge panel 7, synchronously with this the scanning pulses from the first divider 2 frequencies are fed to the input of the first counter of the 3 columns of the panel, and from its output through the first decoder 4 and the first block of keys 5 are fed to the first (left) vertical electrode of the indicator gas discharge panel 7, thereby producing ITS the NEW .buzhdenie of displayed cells on this vertical electrode. Further, the process of polling the cells of the memory block 14 and preparing the illumination signal of the entire vertical electrode of the display panel is repeated, with the only difference that the illumination codes of the second, third, etc., fragments of the familiarity come from the output of the character generator 15, since the signal from the second the output of the second counter 10 lines, entering the input of the third counter 11, causes a sequential search of the memory cells of the character generator 15, the address input of which receives a signal from the output of the third counter 11 while increasing the content of Fourth counter 12 number of columns familiarity does not occur, because

The scaling factor of the third counter 11 is equal to the number of familiarity fragments horizontally and the signal at the input of the counter 12 is as long as the entire first column of characters on the screen is deployed and displayed. Thus, cycling of the first column of the memory block 14 is performed with the number of cycles equal to the number of fragments of the familiarity horizontally, after which the content of the fourth column counter 12 familiarity is increased and the next columns of characters are displayed, etc. until the entire screen is filled, after which the process is repeated with the frequency of image regeneration.

b) Display of graphic information.

In this mode, work with input 18

0 select the type of information to the third (the control input of the second switch 9 receives a signal that prohibits the passage to the input of the register 16 of the illumination signals from the output of the character generator 15 and allows the passage of signals from the output of the memory block 14, which are the codes of the screen illumination atoric discharge panel 7, with

0 of the second input to the output of the second switch 9 and further to the first input of the register 16, from the output of which the illumination signals go through the second block of keys 6 to the horizontal electrodes

5 indicator gas panel 7. Otherwise, the operation of the device is similar to that described in paragraph a. In this case, the sampling time of the indication cell in the proposed device is equal to

(five)

 T.

perHeck

The effective display brightness, 45 is realizable in the proposed device, is equal to

 AT

(6:

Waff per

50

Thus, the proposed device allows displaying an alphanumeric, graphical and combined information on the display gas discharge panel, while the display brightness 55 is higher compared with the known device, as follows from

expressions (6), in - times, which sharply increases the quality of the image.

60

Claims (1)

Invention Formula A device for displaying information, comprising a series-connected pulse generator, de