SU951381A1 - Data display device - Google Patents

Description

(5) DEVICE FOR DISPLAYING INFORMATION

The invention relates to information and measurement technology and can be used in display devices for studying waveforms and measuring their parameters. A device for displaying information is known, which contains an indicator, a decoder, and synchronization elements 1. However, this device allows you to determine the instantaneous values of a parameter, but does not allow for the representation of a change in a parameter over time. The closest to the technical solution of the present invention is a device containing a matrix indicator, some electrodes of which are connected to the scanner and others to the outputs of the coordinate sampling unit, two decoders, the main and additional elements of NAND, the first outputs of the main AND elements NOT are connected to the outputs of the first decoder, their outputs are connected to the inputs of the coordinate sample and to the first inputs of the additional AND-NES elements, the outputs of which are connected to the second inputs of the main AND-NOT elements, and the second the inputs of the additional elements AND-NOT connected to the outputs of the second decoder C2-3. The purpose of the invention is to expand the field of application of the device due to the possibility of comparing the displayed signals with the set ones. The goal is achieved by the fact that in a known device containing a matrix indicator, an image scanning unit along one indicator coordinate, a coordinate sampling unit, first and second decoders, main and additional AND-NOT elements, in which the first inputs of the main AND-NOT elements are connected to the outputs of the first decoder; their outputs are connected to the inputs of the sampling unit

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coordinates and with the first inputs of the additional elements AND-NOT, the outputs of which are connected to the second inputs of the main elements AND-NOT, and the second inputs of the additional elements AND-NOT connected to the outputs of the second decoder, two switches and a comparator are entered, while the information inputs of the switches and the inputs of the comparator are the first and second inputs of the device, the control inputs of the switches are connected to the outputs of the comparator, and the outputs of the switches are connected to the inputs of the decoders.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - examples of information displayed on the device screen.

The device contains a matrix, indicator 1, block 2 sweeps the image on one system of electrodes, block 3, sampling coordinates, main logic elements AND-NOT 4-10, additional logic elements AND-NOT 11-16, terminal 17 for selecting the operating mode, two decoder 18 and 19, switches 20 and 21, comparator 22, information input 23 and level 2k installation input.

The outputs of the first decoder 18 connect with the first inputs of the main elements AND-NOT 4-10, and the output of the second decoder 19 is connected to the first inputs of the additional elements AND-NOT 11-16.

The output of the additional element AND-NO 11 is connected to the second input of the main element AND-NOT THAT. The outputs of the main element AND-NOT 10 are connected to the second input of the additional element AND-HE 9 and one of the inputs of the coordinate sampling unit 3- The second input of the main element AND-NOT 16 is connected to the gate input of the second decoder 19 and to the terminal 17 for selecting the operating mode.

The information inputs of the switches 20 and 21 are connected to the first input 23 of the device, the information inputs of the switches are connected to the second input of the device, and the control inputs of the switches are connected to the forward and inverse outputs of the comparator 22,

FIG. 2 shows examples of information displayed on the screen of the proposed device.

The device works as follows.

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The comparator 22 compares the signals from the first input 23 of the device and the second input 2k of the device, and sets on the control inputs of the switches 20 and 21 such signals that allow the output of the switch 20 to receive a larger signal, and the output of the switch 21 - less.

Suppose that at the entrance 17 there is a presence. The signal is logical 1, which corresponds to the main mode of operation. Decoders 18 and 19 convert the information so that the signal is logical.

5 is present only on one of the outputs of each decoder, on the others there is a level corresponding to logical 1, and the sequence number of the output with the level

0 logical About the decoder - 18 is higher than the output sequence number with the level logical About decoder 19, since the larger signal is at the input of the decoder 18.

5 A chain of NAND logical elements t-IO works so that if at the first inputs of additional elements NAND 11-16 there is a signal with a logic level 1, and at the first

0 the input of the main element, for example 10 (at the second output of the decoder 18) there is a signal with a level of logic O, then the outputs of the main elements 7,6,5 and k are received by signals with a level of logical 1, which will cause the display on the screen 1 column consisting of K light elements.

If a logical O appears on

(the first input of one of the additional elements 11-16, then the signal transmission chain of the logical 1 to the outputs of the main elements AND-NOT terminates on the element with the number corresponding to the output number of the decoder 19 In this case, a bar of light elements is displayed on the indicator screen whose maximum value is determined by the output number of the decoder 18 and the minimum value by the decoder 19 number.

Claims (2)

The scanner unit 2, in accordance with the synchronization signal, alternately switching the electrodes X of the matrix indicator 1, represents the change of the process under study in time in the form of a series of columns, the beginning and end of which are determined by the output numbers of the decoders 18 and 19. The device allows you to display on the indicator signal in the form of a histogram (Fig. 2a). For this, input 2 needs to set a signal; which will cause the appearance of a logical O at the output 1 of the decoder 18 (zero level). If the signal at input 2 is constant and at input 23 changes in time (Fig. 2a), then the indicator shows the image shown in Fig. 26. If the value of the signal at input 2 is increased, then we obtain the image shown in FIG. 2c. After analyzing FIG. 26 and 2b, we can conclude that the envelope of the bikes on the indicator screen, the repetition of the signal 2a, and the right connecting the second ends of the bars, determines the set level of the reference signal, changing the signal at the input of the device 2k, you can explore waveform information and measure its parameters. The signal at the input of the 2k level setting can be variable (Fig. 2d), which gives the operator more opportunities to examine the information signal, since the device, simultaneously with the display, subtracts two signals (Fig. 2e). You can, for example, fold with the spectrum of the previous signal. The propagation time of the signal over the chain of NAND logic elements should be several times (5-10) less than the switching period of the electrodes X of the indicator 1, which takes place in real devices. In this case, there is no noticeable loss of luminance of the displayed information. Now suppose that the level of the Ci | - nal on terminal 17 is equal to logical O, which corresponds to the auxiliary mode of operation. This translates the decoder 19 into a state in which all its outputs have a logical 1 signal and simultaneously causes the appearance of a logical 1 signal at the outputs of all the main AND-NES elements, which makes it possible to excite all the light elements of the indicator 1. This is necessary for reproduction on the screen of the scale grid indicator, which helps the operator navigate the displayed information. 1 Thus, the proposed device allows you to register changes in information signals over time, examine their shape and perform various operations with these signals. The present invention is expedient to use when creating control devices for complex production processes with a large number of registered parameters, as well as in display devices that require increased information on ability, for example, when comparing two time signals, performing signal summation (subtraction) operations. The invention The device for displaying information contains a matrix indicator, some electrodes of which are connected to the scanner, others to the outputs of the coordinate sampling unit, main and additional elements AND-NOT, first inputs of the main elements AND-NOT connected to the outputs of the first decoder, their outputs are connected with the inputs of the co-ordinate sampling of coordinates and with the first inputs of the additional NAND elements, the outputs of which are connected to the second inputs of the main NI elements, and the second inputs of the additional AND elements are NOT connected The outputs of the second decoder are characterized in that, in order to expand the application area of the device due to the possibility of comparing the displayed signals with the set ones, two switches and comparators are entered into It, the information inputs of the switches and the inputs of the comparator being the first and second the device inputs, the control inputs of the switches are connected to the outputs of the comparator, and the outputs of the switches are connected to the inputs of the decoders. Sources of information taken into account during the examination 1. USSR author's certificate W 561982, cl. G 06 K 15/18, 1975. 2. USSR author's certificate. According to W 297 738 / 18-24, cl. G 09 G 3/20, 19VO (prototype).