SU1228298A1 - Device for reproducing television picture - Google Patents

Abstract

The invention provides an improvement in the quality of the reproduced television image by stabilizing the sweep of the television image. The video signal from the video signal source 3 is fed to the amplitude-pulse modulator 5. At its other input, clock, power pulses are received from the 4 clock pulse generator. The clock pulses modulated by the amplitude of the video signal are transmitted to the light-emitting neuristor line (SINL) 1. SINL 1 is a chain of elements connected in series in excitation loaded on parallel RC circuits. Each SINL 1 cell contains a light emitting element. The neurist impulse of each subsequent cell is formed when the next impulse is received. The luminous intensity of the light emitting elements of the cells of SINL 1 is modulated in accordance with the voltage of the video signal. Synchronizer 2 generates the start-up pulses dp of the generator 4 clock pulses and SINL 1. 1 Il. (O (L IsD 1C 00 to CD 00

Description

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The invention relates to a television technique and can be used in television installations, in information display systems, and also as a vacuum-free analogue of a run-beam type tube.

The purpose of the invention is to monitor the quality of the reproduced television image by stabilizing the sweep of the television image.

The drawing shows a structural electrical circuit of a television image reproducing apparatus.

The television image playback device includes a light-emitting neuristor line 1, a synchronous generator 2, a video signal source 3, a 4 clock pulse generator, and an amplitude-pulse modulator 5.

The device works as follows.

A light-emitting neuristor line (SINL) 1 is a chain of elements connected in series to excite a load loaded on parallel RC circuits and contains a light-emitting element in each cell, which can be a load electroluminescent capacitor, an LED or a light-emitting pnp or pin structure. This device uses a single-cycle pulsed power supply mode SINL 1, in which the neural impulse of each subsequent cell is generated when the next supply pulse arrives. This mode of operation of SINL 1 is possible because the excitation pulse in the control circuit of an off element located next to the on state dissipates in a certain amount of time during which the voltage of the off element remains low. Therefore, when another supply pulse is applied during this time, the element is switched on similarly to the case of constant voltage.

At the same time, the propagation of the neuron: pulse along SINL 1) is possible when the amplitude of the supply pulses varies over a wide range and the temporal parameters of these pulses remain constant (their duration and follow-up period).

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When a start pulse is fed from the output of the synchronizing generator 2 to the input of the generator 4 clock pulses from the output of generator 4 is fed to the input of the amplitude-S pulse-pulse modulator 5, the clock pulses of the power supply follow the duration and duration of the neural impulse from the cell to the cell and the duration of the neural impulse at a constant voltage supply, respectively. At the same time, a trigger pulse is fed to the input of SINL 1 and a neuristic pulse begins to propagate along it. A voltage like a signal from source 3 is applied to the input of the amplitude-modulated modulator 5, as a result of which the power clock pulses become modulated by the amplitude of the video signal. As a result, the luminous intensity of the light-emitting elements of the SECP 1 cells is also modulated in accordance with the voltage of the video signal. The voltage swing and modulation depth are chosen such that the maximum value of the amplitude of the supply voltage pulses is within the allowable variation of this amplitude with constant temporal parameters of the impulses bc. Therefore, the speed of propagation of a neuristor pulse along SINL 1, i.e. scanning speed remains unchanged.

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Claims (1)

Invention Formula A television image reproducing device containing a neuron light-emitting line, whose input is connected to the first output of the clock generator, and a video signal source that is different from the fact that, in order to improve the quality of the reproduced television image by stabilizing the sweep of the television image, a pulse generator and pulse amplitude a modulator that is connected between the output of the video signal source and the power supply bus of the light emitting neuristor line, and the clock generator New pulses are connected between the second output of the synchro generator and the second input of the pulse amplitude modulator.