SU1084831A1 - Device for simulating image with discrete structure - Google Patents

Abstract

1. A DEVICE FOR MODELING AN IMAGE WITH A DISCRETE STRUCTURE, containing a plot slit, an objective lens and a screen, which are successively located on the optical axis, with the aim of increasing rapidly, an electron beam tube, a sweep grid pattern generator are introduced into it; horizontal and vertical sampling generator and generator, the screen of the cathode ray tube is installed directly in front of the plot slide, and the deflection system of the cathode ray tube is Connected to the outputs of the first group of the generator of the sweep signals of the mesh raster, the outputs of the second group of which are connected to the clock inputs of the generator of horizontal and vertical sampling pulses, the outputs of which are connected to the corresponding inputs of the shape (L of the signals of the sweep of the mesh raster.

Description

.one

In particular, the shaper of the sweep of the mesh raster contains a sweep voltage generator, a clock pulse generator, a sweep pulse generator, vertical and horizontal scanning channels, each of which consists of a sawtooth voltage generator, a switch and an amplifier, and a beam quenching channel, consisted A two-element NOT, two beam-quenching pulse generators, an OR element and an amplifier, the output of the sweep pulse generator is connected to the first input of the sweep voltage generator, the second input of which is connected to the output of the clock generator, the output of the sweep voltage generator is connected to the generator input the sawtooth voltage of the horizontal channel and, through the first element, are NOT to the input of the first generator of beam quenching, the output of which is connected to the first input of the element OR; coagulant OR connected to the output of the second generator blanking pulse, a clock pulse generator output via the second element is not connected to the input of the second oscillator blanking pulses and to input the sawtooth generator channel vertical scanning, an output of OR connected to the input of the amplifier channel blanking the beam, yield

the first group of driver, the outputs of the saw-tooth voltage generators in each of the scanning channels through the corresponding switches are connected to the corresponding amplifiers, the outputs of which are the outputs of the first group of the driver on the corresponding channel, while the outputs of the generator of the voltage sweep and clock pulses are the outputs of the second group the former, and the third and fourth inputs of the OR element are connected to the control inputs of the switchboards of the channels of horizontal and vertical scanning, respectively and are input shaper.

3. The device according to claim 1, 1 and 2, in that the generator of horizontal and vertical sampling pulses contains two channels, each of which consists of a pulse counter, a key, a voltage source and a discretization reference block, and the output of the discretization block in each channel through. The voltage source is connected to the control input of the key, the information input of which is connected to the output of the pulse counter of its channel, the outputs of the keys are the outputs of the pulse generator, and the inputs of the pulse counters are the clock inputs of the generator.

one

The invention relates to the display and recognition of visual information and can be used to simulate images indicated by matrix indicators.

The closest in technical essence and the achieved result to the invention is a device for modeling images with a discrete structure, containing a light source sequentially located on the optical axis, a capacitor, a slide with a grid, a plot slide, a lens and a screen.

The disadvantages of the known device are the complexity and cumbersome variation of the discreteness of the simulated image, since in order to change the discreteness of the image, it is necessary to make a new slit of the mesh raster each time. This is a complicated management procedure.

discrete image structure, which makes it impossible to vary the discreteness in real time and select the optimal discreteness of a given type of image in accordance with

with the psycho-physiological parameters of the operator's view. The aim of the invention is to improve the speed of the device. The goal is achieved by introducing an electron beam tube, a grid raster sweep signal generator and a horizontal and vertical sampling pulse generator into the device containing successively located on the optical axis a plot slide, a lens and a screen, the screen of an electron beam track mounted directly in front of the slide film , and the deflection system of the electron-beam tube is connected to the outputs of the first group of the generator of the signals of the scanning of the net raster, the outputs of the second group of which are connected to the synchronizing inputs of the generator of pulses of horizontal and vertical sampling, the outputs of which are connected to the corresponding inputs of the shaper of the scanning signal of the grid raster. The shaper of the grid raster scanner signal contains a sweep voltage generator, a clock pulse generator, a sweep pulse generator, vertical and horizontal scanning channels, each of which consists of a sawtooth voltage generator, a switch and amplifier, and a beam quenching channel consisting of two NOT elements, two beam-driven pulse generators, an OR element, and an amplifier, the output of the sweep pulse generator connected to the first input of the sweep voltage generator, the second The input of which is connected to the output of the clock pulse generator, the output of the ramp voltage generator is connected to the input of the sawtooth voltage generator of the horizontal scanning channel and through the first element NOT to the input of the first generator of beam quenching pulses whose output is connected to the first input of the OR element, the second the input element OR is connected to the output of the second pulse generator of the beam quenching, the output of the clock generator through the second element is NOT connected to the input of the second generator of the beam damping pulse and to the input One generator of the sawtooth voltage of the vertical scanning channel is the output of the element OR connected to the input of the beam quenching channel amplifier. 1 1 the output of which is one of the outputs of the first group of the generator, the outputs of the sawtooth generators in each of the scanning channels through the respective switches are connected to the corresponding amplifiers, whose inputs are the outputs of the first group of the generator on the corresponding channel while the outputs of the voltage generators sweeps and clock pulses are the outputs of the second group of driver, and the third and fourth inputs of the OR element are connected to the control inputs of the channel switches horizontal hydrochloric and vertical, respectively, and are input shaper. In addition, the horizontal and vertical sampling pulse generator contains two channels, each of which consists of a pulse counter, a key, a voltage source and a sampling block, and the output of the sampling block on each channel is connected to the control input via a voltage source key, the information input of which is connected to the output of the pulse counter of its channel, the outputs of the keys are the outputs of the pulse generator, and the inputs of the pulse counters are the clock inputs of the generator a. FIG. 1 shows the structural and functional diagram of the device; in fig. 2 -.schemes of the former of the sweep signals of the grid raster and the generator of horizontal and vertical sampling pulses; in fig. 3 - voltage plots showing the operation of individual units of the device. A device for modeling an image with a discrete structure contains a screen 1, a lens 2, a plot slit 3, a screen 4 of a cathode ray tube 5, whose focusing deflecting system 6 of which is connected to the outputs of the first shaper 7 of the grid pattern of the grid raster 8, and the outputs of the second group, are installed in front of the scene slit. shaper 9 is connected to the clock inputs of the generator 10 pulses of horizontal and vertical sampling. The shaper of the sweep of a mesh screen contains, for example. a sweep voltage generator 11, a 12 clock pulse generator and a 13 sweep pulse generator, as well as a beam 14 channel, a vertical 15 and a 16 horizontal scan channels. At the same time, channels 15 and 16 contain identical generators 17.1 and 17.2 of sawtooth voltage .18.1 and 18.2 switches and amplifiers 19.1 and 19.2. Beam quench channel 14 contains, for example, two elements HE 20.1 and 20.2, two generators 21.1 and 21.2 beam damping pulse element OR 22 and amplifier 23. A horizontal and vertical sampling pulse generator contains, for example, two channels 24.1 and 24.2, consisting of identical counters 25.1 and 25.2 pulses, keys 26.1 and 26.2, sources, 27.1 and 27.2 voltages and blocks 28.1 and 28.2 of discretization assignments. The device operates as follows. By means of the generator of 10 impulses

horizontal and vertical sampling set the required discreteness of the mesh raster. The shaper of the sweep of the grid screen 8, using signals from the generator 10, controls the focusing-deflection system 6, which expands the grid raster on the screen 4 of the CRT 5 with a grid resolution set by the horizontal and vertical sampling generator 10. The resulting light flux from screen 4 illuminates the scene slide 3 and the resulting image is projected using lens 2 on screen 1. The experimenter observes on screen 1 a discrete image of the plot with raster discreteness displayed by the screen of the cathode ray tube 5 The discrete raster screen is controlled as follows in a way. With the help of blocks 28.1 and 28.2, the discretization regulates the necessary voltages from the outputs of sources 27.1 and 27.2 to the voltage of the inputs of the keys 26.1 and 26.2, setting smoothly

arrives at the switch 18.2. In the vertical channel, the control is carried out in a similar way only at the input of the saw-voltage generator 17.1, pulses are received from the generator 12 with a different generation period.

Thus, the experimenter or automaton, adjusting the voltage vertically and horizontally with the help of blocks 28.1 and 28.2 of the discretization, ensures a smooth change in the discreteness, choosing the optimum for the given plot.

Adding new nodes and connections allows to increase the speed and smoothness of image discreteness control due to the appearance of the possibility of flexible and continuous regulated stepwise necessary discreteness. The keys 26.1 and 26.2 pass only those pulses from the counters 25.1 and 25.2, which determine the specified (selected) discreteness of the grid raster. From the outputs of the keys 26.1 and 26.2, the generated signal (Fig. 3.5) of the discreteness control enters the beam-quenching channel 14 and the switches 18.1 and 18.2, at the output of which a signal is formed (Fig. 3.6), which through an amplifier 19.1 and 19.2 in each of the channels arrive at the focusing-deflecting system 6. Pulses from the generator 12 clock pulses (FIG. 3.1) and pulses (FIG. H.c2) from the generator 13 pulses of the sweep pulse arrive at the input of the sweep voltage generator 11. From the output of the sweep voltage generator 11, a signal (Fig. 3.3) enters the channel 14 to extinguish the beam and to the input of the sawtooth generator 17.2, which generates a sweep voltage (FIG. 3.4), which is widespread in the grid pattern. Compared with the known device, complex manufacturing operations of mesh rasters are eliminated, which allows reducing the time and improving the accuracy of selection of optimal discreteness and matching it with the psycho-physiological parameters of the operator’s vision.

FIG. 2

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FIG. 3

Claims (3)

1. DEVICE FOR MODELING THE IMAGE WITH A DISCRETE STRUCTURE, containing the following. The plot slide, lens, and screen located on the optical axis are distinguished by the fact that, in order to improve performance, a cathode ray tube, a raster scan signal generator, and a horizontal and vertical sampling pulse generator are introduced, and the electron beam screen the tube is installed directly in front of the plot transparency, and the deflecting cathode ray tube system is connected to the outputs of the first group of the raster scan signal generator, the second group which are connected to timing inputs of the generator of horizontal and vertical sampling pulses, the outputs of which are connected to the corresponding input of the raster scan signals of the mesh. O □ O ^ 0 FIG. 7 2. The device according to π. 1, characterized in that the raster scan signal generator comprises a scan voltage generator, a clock pulse generator, a scan pulse generator, vertical and horizontal channels, each of which consists of a sawtooth voltage generator, a switch and an amplifier, as well as a channel the blanking beam, consisting of two elements NOT, two pulse blanking pulse generators, an OR element and an amplifier, and the output of the sweep pulse generator is connected to the first input of the voltage generator ra a starter whose second input is connected to the output of the clock generator, the output of the scan voltage generator is connected to the input of the sawtooth voltage generator of the horizontal channel and through the first element is NOT to the input of the first beam blanking pulse generator, the output of which is connected to the first input of the OR element, the input of the OR element is connected to the output of the second beam blanking pulse generator, the output of the clock pulse generator through the second element is NOT connected to the input of the second blanking pulse generator taking into account the input of the sawtooth voltage generator of the vertical channel, the output of the OR element is connected to the input of the beam blanking channel amplifier, the output of which is one of the outputs of the first shaper group, the outputs of the sawtooth voltage generators in each of the scanning channels are connected to the respective amplifiers through the corresponding switches, the outputs which are the outputs' of the first group of the driver through the corresponding channel, while the outputs of the generators of the voltage sweep and clock pulses are I outputs of the second group of the shaper, and the third and fourth inputs of the OR element are connected to the control inputs of the switches of the horizontal and vertical channels, respectively, and are the inputs of the shaper. 3. The device according to p. ^ Characterized in that the horizontal and vertical sampling pulse generator contains two channels, each of which consists of a pulse counter, a key, a voltage source and a sampling unit, and the output of the sampling unit in each channel through a voltage source connected to the control input of the key, the information input of which is connected to the output of the pulse counter of its channel, the outputs of the keys are the outputs of the pulse generator, and the inputs of the pulse counters are synchronized generator inputs.