SU636644A1 - Indicator - Google Patents

Description

The invention relates to display devices and formatization and is intended for reconstructing graphs on a gas discharge display panel. A display device comprising a gas-discharge display panel (HIP) associated with a control unit and via keys with a decoder connected to the first counter, whose input is connected to the first AND element connected to a pulse generator, is known. The second counter connected to the memory block ty, and the second element And ij. A disadvantage of the known device 5S is the low reliability of reproducing graphs of functions, changing them at high speed, since when imaging, the next excitable person is located at a considerable distance from the cell, lit in the previous moment, and, therefore, leaves the illumination zone. The whole invention is to increase the reliability of the indicator. The proposed device is characterized in that it comprises a linear interpolator, a one-shot and a trigger, the inputs of which are connected to the decoder and one-shot, and the output to the first and second counters and to the first input of the second element I, the second input of which is connected to the pulse generator and a linear interpolator, a third input with a single-V and an {I & A) element, a linear interpolator connected to a memory unit, a control unit, a second meter and an input bus. In the proposed device, additional x codes corresponding to the ordinates of the intermediate points, which are located on the direct, connected to the two adjacent reference ordinates. The use of additional ordinates along with the main ones in the formation of the image makes it possible to obtain continuous r (afik. Thus, for any kind of displayed graph, before giving a signal to the next cell, it is excited near (in the next column or row), i.e. the cell always appears in the zone of illumination of the previous one. The block diagram of the proposed device is shown in FIG. 1 and contains a gas discharge display panel 1, a control unit 2 in rows, keys 3, a decoder 4, the first counter IR 5, memory block 6, linear interpolator 7, trigger 8, one-shot 9, pulse generator 10, second element 11, first element 12, second counter 13. Fig. 2 shows time diagrams explaining the principle the indicator works (each panel reference value is assigned a column of the panel). The device works as follows. Suppose that the reference coordinates of the displayed graph are recorded in the memory block Q Q Shch 2 j L The second counter 13 is in the OO state ... O1, the input of the linear interpolator 7 receives the code corresponding to the ordinate N j, and from its output (due to the delay) - the ordinate N g (Fig. 2, a, e). The first counter 5 is in the state O, i.e., using the keys 3, the first column of the gas discharge indicator panel 1 is connected, and the trigger 8 is set to the state O, During the time t to tg, additional values are determined by the linear interpolator the codes correspond to the ordinances there of the intermediate points of the graph located between the reference ordinates NO and N, which are fed to the control unit 2, permitting the excitation of cells in the first column of the gas discharge display panel 1 (Fig.). At the time point b (Fig. 2, e), the synchronizing output of the linear interpolator 7 to the counting input of the second counter 13 receives a pulse, which increases its content by one, and the code corresponding to the input of the linear interpolator 7 from the memory block 6 arrives ordinate H Signal, the outputs from the generator U of pulses to the input of the first counter 5 through the first element I 12 (phage 2, g) connects the second column of the gas discharge display panel 1. During the next interpolation period T {j С i 5 - t 1) Bbt production is made. The numbers corresponding to the ordinates of the intermediate points of the graph located between the Ni.Nrt reference ordinates and the code corresponding to the reference ordinate H 2) will be called to the input of the linear interpol 6 44 ora 7 7. After the generator has generated 10 pulses of P-I pulses (Fig. 2), the last P column of the panel is connected, and the ordinate code N., will be outputted by the linear interpreter 7, and the order code M p will come to its input. At the moment of connecting the last column of the panel (tg), the signal from the last output of the decoder, 4 starts the one-shot 9 and switches to 1 trip 3 p 8 (Fig. 2c, e). During the next period Tg (tg-tio), the linear interpolator 7 ensures the formation of codes of additional ordinates located between the reference ordinates Njj and N. The input code of the linear interpolator 7 will again be called the ordinate code Nj The state of the first counter 5 when the n - th state arrives the pulse of the pulse generator 1O does not change, since the signal of the one-vibrator 9 arrives at the inverse input of the second element I 12, i.e. the last column of the gas discharge display panel 1 will be connected during two periods of the pulse generator lsov 1D. This ensures the coincidence of images formed during the forward and reverse sweep. At time t JQ, the left-to-right image deployment will be completed. During the time of the next approximation period tig-t., 2), the linear interpolator 7 calculates the values of the codes for the interstitial points located on the straight line between the points with ordinates Cj. IM} .4 and the value of N will be called to the input of the linear interpolator 7. The next signal from the generator of 10 pulses will be connected to the tt -1 column. Subsequently, control signals to the HIP cells are reversed. When the first column of the gas-discharge indicator panel 1 is connected, trigger 8 is reset (the direction of scanning and memory polling becomes initial) and the one-shot 9 is restarted. During the next period Td (tj-t.), The ordinates of additional codes are calculated, corresponding to the ordinates of intermediate points between points with reference ordinates / i and Mo. , and the ordinate code N j will be recalled to the input of the linear interpolator 7. The output signal of the one-shot 9, arriving at the inverse input of the first element And 12, will not miss the next signal of the generator 1O pulses

to the input of the first counter 5, i.e. the first column of the gas discharge display panel 1 will remain connected,

Thus, after the generator of pulses 2 produces 2 pulses, the indicator circuit returns to its original state, which is confirmed by the DM signal from the output of the second element I 11. If the first counter 5, the second counter 13 or linear interpolator 7, then the decay of the pulse coming from the second element And 11 {FIG. 2pc) the indicator of graphs is set to the initial state.

The initial setting of the second counter "state CO ... O1 is entered to eliminate the delay introduced by the linear interpolator 7.

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tt H

 The X axis is produced when the linear input of the linear interpolator 7 receives the corresponding signal, which changes the interpolation period Q by changing the frequency of the pulses arriving at the synchronous input of the interpolator. When plotting the displayed process on a different scale along the X axis, for example, 5: 1, the values of the reference ordinates N0, M, N2 ... stored in the memory block are displayed in the points located at 1, 6, 11 and t l matrix panel columns. On the remaining columns, the cells corresponding to the ordinates are displayed, you choose 1 or 3 of the interpolators. In this case, the sequence of operation of all the elements of the indicator stays the same. In order to lie every sweep reversal or to produce a forced

the installation of a linear interpolator in a state that depends on i, N ", ... O and the reproduction scale, the latter must be chosen in such a way that a whole number of periods T fit into the time.

Claims (1)

1. Television methods and information display devices. Ed. MI Krivoshcheeva. Ed. Soviet Radio, 1975, p. 229., Ts 8 h. to ie IG