SU1179426A1 - Device for displaying information - Google Patents

Description

The invention relates to display devices and can be used to create devices displaying histogram information on matrix indicators (gas-discharge, electroluminescent, etc.). five

The aim of the invention is to expand the scope of the device by providing additional display of graphs and histograms.

FIG. 1 shows a functional 10 diagram of the proposed device; in fig. 2 timing charts characterizing his work.

The device contains a matrix indicator 1, a distributor 2 sweep pulses, a block and 3 choices of indicator elements, a first decoder 4, a second decoder 5, a group of 6 keys, a first group of 7 N-elements, a second group of 8 N-elements, a synchronizer 9, shaper 10 three-level 2 ₀ voltage, the third group of 11 elements of IS-IE and the fourth group of 12 elements of IS-NOT.

The device operates in two modes: “Histogram” and “Graph”.

To display the histogram on the matrix indicator 25, it is necessary to synchronously switch the electrodes with the distributor 2 sweep pulses to a number of electrodes of another system, starting with the first, the voltage must be applied, the number of electrodes to which the voltage must be applied must be proportional to the input code.

The voltage ka horizontal electrodes of the matrix indicator 1 supplies the block 3 of the selection of indicator elements, which is a matrix of keys. With an open key, the voltage at its output will be less than the excitation voltage of the matrix indicator. The display will be only when the key is closed (when applying “0” to its input).

The control electrodes of the key elements of the matrix and the common electrodes, respectively, are combined by horizontal and vertical tires. With this combination, only 20 electrodes are required to control the 100 keys, but they must perform the logical operation “and” when applying the appropriate signals to the X and Y buses.

To supply voltage to the horizontal electrodes of the matrix indicator, the key of the latter must be closed, which is possible 50 only if the voltage on its control electrode relative to the common electrode is equal to or less than zero.

Consider the histogram display for an indicator that has 100x100 55 indicator elements, for control of which the matrix of keys of block 3 represents 100 keys combined into 10 columns with 10 keys in a column. Let us number the matrix keys as follows: 3-1, 3-2 ... 3-10 keys of the first первого column from the first to the tenth row; 3-11, 3-12 ... 3-20 - the keys of the second column from the first to the tenth row, etc., and 3-91, 3-92 ... 3-100-keys of the last tenth column from the first to the tenth string.

To display the parameter in the form of a histogram with a column length of 44 cells, it is necessary to close the keys 3-1 to 3-40 using the first fourth vertical tires, close the keys 3–41 to 3 using the fifth vertical and first to fourth horizontal tires. —44 In this case, the control and common electrodes must be energized, the diagrams of which are shown in FIG. 2a, b (solid line).

Indeed, when applying to the common electrodes of keys 1 through 40, supply voltage and _n , and to their control electrodes, either _n or 1/2 11 _n on the keys 3-1; 3-11;

3-21; 3-31; 3-41; 3-2; 3-12 ... 3-42; 3-3; 3-13 ... 3-43; 3-4; 3-14 ... 3-44 voltage 1/2 υ _η is applied, and to the control electrodes of the keys from 3-5 to 3-10; from 3–15 to 3–20, from 3–25 to 3–30, from 3–35 to 3–40 and from 3–45 to 3–50 - voltage 1) _and . Therefore, the keys from 3-1 to 3-40 will be closed and the voltage at their outputs will be sufficient to excite the corresponding elements of the matrix indicator 1.

Keys 3 in the fifth column (from 3–41 to. 3–44) connected to the fifth vertical bus will also be closed, since the voltage on their control electrodes relative to the common ones will be positive and equal to either 1/2 and _and or _and .

FIG. Figures 2a and 5 show the voltage plots (dashed line) on the key electrodes when displaying a histogram with a bar length of 66 elements. These voltages give the keys of group 6 and the shapers of the three-level voltage.

I

To display the graph indicator on the matrix indicator, it is necessary to synchronously switch the electrodes with the distributor 2 sweep pulses to a specific electrode of another system to supply a pulse voltage, and the number of the electrode to which this voltage should be applied must be proportional to the input cop, i.e. the voltage is supplied only from the electrodes matrix indicator 1. In this case, only one of the keys of block 3 must be closed, which is possible if the voltage between the control and common electrodes is zero Yu. Voltage plots on electrodes (control n general)

3 11 '

The keys of block 3 are shown in FIG. 2 in and

F respectively.

“Indeed, with such voltages only y of the 3–54 key, the voltage between the control and common electrodes is zero, with the other keys, the voltage on the control electrode is relatively common and they will be open.

In the “Graph” mode, the “O” is sent to the first control input of the device, and the elements of AND-NOT of the third and fourth groups 11 and 12 are closed one by one and do not participate in the work.

The keys of group 6 work similarly to the “Histogram” mode, with the only difference that the voltage drop from 11 _p to 1/2 and _p arises only at one output, determined by the first decoder 4.

Formers 10 three-level voltage in the "Graph" form only two voltage levels close to zero and 1/2 and _p .

When the code is fed to the second information input of the second decoder 5, one ”of its outputs will have a voltage of” 0 ”, 25, and the elements of the IS-NOT of the second group 8 function as ordinary inverters.

Thus, at the desired output voltage and _p / 2 is formed, which, together with the output voltage of the corresponding. *. key group 6 will close only one of klyu19426 4

whose block 3 and will cause the display of only one specific element.

When the sweep code is changed by the synchronizer '9, the sweep pulse distributor selects a new column of the matrix indicator 1, and new information code values are fed to the second information input of the device, and a new point is ignited on the newly selected column in accordance with the information code, etc. until all points of the curve are highlighted. So. As the scan is performed with a sufficiently high frequency (approximately 50 Hz or more), the image on the screen looks fused in

15 view of the graph (curve, straight line, broken line).

The second control input of the device is used to create a scale grid,

To this end, the second control input must at certain times synchronously with the scan codes send “0”. If the duration of the latter is less than the duration of the scan code, then the brightness of the scale grid will be less than the brightness of the main image.

The implementation of the invention will require insignificant costs (commercially available matrix indicator type IMG — 1 must be supplemented with a total of 19 series 155 chips, thirty resistors and ten diodes).

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Claims (1)

A DEVICE FOR DISPLAYING INFORMATION containing a matrix indicator, the vertical tires of which are connected to the outputs of the pulse distributor sweep, the input of which is connected to the output of the synchronizer, a block for selecting indicator elements made in the form of a matrix of keys, the outputs of which are connected to the corresponding horizontal: ι tires of the matrix indicator, and the first decoder, the input of which is the first information input of the device, characterized in that in order to expand the field of application of the device by STI additional display of graphs and bar charts, it contains a group of keys whose outputs are connected to the first inputs of the corresponding keys of the indicator element selection unit, three-level voltage drivers, whose outputs are connected to the second inputs of the corresponding keys of the indicator element selection block, the second decoder whose input is the second information input of the device, the first and second groups elements AND-NOT, the first inputs of which are connected to the outputs of the first and second decoders, respectively, the third and fourth groups of elements AND-KE, The first inputs of which are the first control input of the device, the second with the inputs of one of the first and second groups AND-NOT elements are the second control input of the device, and the second inputs of the other AND-NOT elements of the first and second groups are connected to the outputs of the corresponding AND-NOT elements of the third and fourth groups, respectively; the second inputs of the third AND third elements the groups are connected to the inputs of the corresponding group keys and the outputs of the corresponding elements of the NAND group, and the second inputs of the elements of the NAND fourth group are connected to the inputs * of the corresponding three-level voltage drivers and outputs tvetstvuyuschih AND-NO elements of the second group > 1 1179426 2