SU758129A1 - Indication device - Google Patents

Description

The invention relates to automation and computing, in particular to the indicator devices, and is intended to 'represent information in the form of letters and numbers. !

Known information display devices in which important information is highlighted by a change in the luminance of the characters by using pulse-width modulation £ ΐ]. ·

Devices with pulse-width modulus contain an indicator, an input block, an address block, a character decoder, and random access memory. With a large number of mappings-15 my characters, a complex operative memory device is necessary, 4χο complicates the device as a whole.

. Known display devices of symbolic information containing 20

A manual input panel, an Information input block connected to an address block and a character decoder connected to the enacosynthesis of indicators (23. These devices do not need to regenerate information, but the reliability of reading is reduced due to the lack of possibility to input important information due to brightness of glow. 30

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The aim of the invention is to improve the reliability of the device.

To do this, a device for indicating, containing indicator elements connected to an address block and a decoder connected to an input block, and a control unit, have been inserted memory blocks, inverting blocks, AND elements, OR elements, restrictive elements, for example, resistors and switches, alone the inputs of the first keys directly, and the second keys through the limiting elements are connected to one outputs of the indicator elements, the outputs of the keys are connected to the zero potential bus, the other inputs of the first keys through interiors, and the second keys on Directly connected to the outputs of memory blocks, some inputs of which are connected to the output of the control unit, others (inputs of memory blocks are connected to the outputs of the AND elements, some inputs of which are combined and connected to other outputs of the indicator elements, inputs of the OR elements connected to the outputs of the control unit and other inputs the first elements And, the outputs of the elements OR are connected to other inputs of the second elements I.

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The drawing shows the Functional diagram of the Device for display.

The device contains indicator elements 1 connected to the address block 2 and the decoder 3 connected to the input block 4. The input block 4 is connected to the control unit 5 connected to the decoder 3 and the brightness modulation blocks 6. The brightness modulation blocks b contain the first keys 7 and the second keys 8, restrictive elements 9, inverters 10, memory blocks 11, second elements AND 12, memory blocks 13, first elements. AND 14, elements OR 15.

The device works as follows: 15

at once.

In the initial state, the indicator elements 1 and the memory blocks 11 and 13 do not have information, so the second keys 8 are closed, and the first 20

the keys 7 are open, since they receive a signal from the memory blocks 11 through the inverters 10. The keys 7 provide direct connection of the indicator elements 1 to the common bus. · 25

When signals arrive at the input of the device from input unit 4, a signal arrives at the input of address unit 2, the output of which receives the signals of the row and column addresses, ensuring that the corresponding indicator element θ is selected θ. After the signal from the address of the input block 4, a signal arrives at the decoder input 3, where it is converted into a "graphic", corresponding to the style of the incoming sign.

From the outputs of the decoder 3, the signals are sent to all indicator elements 1, however, information is entered into that indicator element 1, to which the address signals are applied. 40

If the input signal contains information about the change in the brightness of the received information, then from the input 4 block a signal is sent to the control unit 5, which also receives signals from the decoder 3. In accordance with the required brightness change and the number of on-indicator elements 1 s the output of the control unit receives signals at one input of the first elements AND 14 and elements OR 15. However, the signals will be recorded in those memory blocks 13 connected to the indicator element 1, which receives the signals of the row and column addresses. ⁵⁵

The address signal from the indicator element 1, in which the next information is entered, arrives at the other, inputs of the elements 12 and 14.

The signals from the control unit '5 post- 60 pa ”t through the elements OR 15 and I / 12 to the input of the memory block 11, thereby ensuring the entry into it of the logical“ 1 ”. The signal from the output of the memory block 11 through the inverter 10 enters the key 65

7, ensuring its opening. The signals from the control unit 5 are fed to the inputs of the corresponding elements And 14 and the signals of logical "1" are recorded in the corresponding memory blocks 13. The signals from these memory blocks 13 open the keys 8 and the indicator element 1 is connected to the common bus through several limiting elements 9, the equivalent resistance of which is chosen from the condition of providing the necessary change in the luminance brightness. On the limiting elements, which may be resistors, a voltage drop is created from the flowing current, resulting in a decrease in the voltage applied to the indicator elements 1, which leads to a decrease in the luminance brightness.

The value of the equivalent resistance of the limiting elements in the common circuit of the indicator element depends on the number of emitters switched on in the indicator element 1 (i.e., the current through the common point of the indicator element) and the required change in the luminance brightness. The choice of the required resistance value is ensured by the parallel connection of several restrictive elements 9. • Information in other indicator elements is entered in the same way.

If the information is already entered into the indicator elements 1, then their brightness can be changed from the control unit 5. To do this, from the control unit 5 through the input block 4 in the address 2 block the address code of the row and column is entered, at the intersection of which is the indicator element 1, in which It is necessary to change the brightness of the glow. In the control unit 5 is entered information about the number of included elementary emitters and the required change in the brightness of the glow. The connection of the necessary restrictive elements 9 is carried out in the same way as when entering information.

Before changing information in the indicator elements 1, the control unit 5 receives a "zero setting" signal on the "Y" bus, transferring the memory blocks 11 and 13 to the zero state and thus ensuring the direct connection of the indicator elements 1 to the common bus 7 keys simultaneously on the indicator elements erase signal is given.

The ability to highlight the relative importance of information by changing the brightness of the indicator elements can improve the reliability of the device due to more rapid and correct reading of important information.

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Claims (1)

Claim A device for indicating, containing indicator elements connected to an address block and a decoder connected to an input block, and a control block, characterized in that, in order to increase the reliability of the device, memory blocks, an inverting block, And elements are introduced into it OR, restrictive elements, for example, resistors and keys, one input of the first keys directly, and the second keys through the restrictive elements connected to one of the outputs of the indicator elements, the outputs of the keys are connected to the tire of zero potential, d O ther inputs of first keys, through inverters, and the second neposredstvenno.soedineny keys with outputs of memories, some inputs of which are connected to the output of the control unit, the other inputs of the memory units are connected to the outputs of AND gates, some inputs of which are combined and connected to the other output 5 indicator elements, the inputs of the OR elements are connected to the outputs of the control unit and other inputs of the first elements AND, the outputs of the elements OR are connected to other inputs of the second elements I.