SU1483669A1 - Unit for control of operating mode of transmitting tv tube - Google Patents

Abstract

The invention relates to a television technique. The purpose of the invention is to enhance the functionality by providing a pulse accumulation mode of a transmitting television tube. The device contains three pulse drivers 1, 9, 5, input 4 signal sync pulses, a key 10 modulator, input 11 of a frame sync signal, input 12 of a conversion code, input 13 of a recording signal, output 14 of gate pulses, output 15 of a read resolution signal, output 16 signal end of the cycle of operation. The goal is achieved by introducing into the device two comparators 2.3, a subtractive counter 6, a one-shot 7 and an element OR 8. The device provides two modes of operation of a television transmitting tube. The selection of the mode is determined by the specific task of examining the light signals. 1 il.

Description

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The invention relates to a technique of television and can be used to control the operating modes of a transmission television tube.

The purpose of the invention is to expand the functionality by providing a pulse accumulation mode of a transmitting television tube.

The drawing shows an electrical block diagram of the transmission mode control device of the transmitting television tube.

The control unit of the transmitting television tube operation mode contains the first pulse shaper 1, the first and second switches 2 and 3, the input 4 of the signal sync pulses, the third pulse shaper 5, the subtracting counter 6, the one-shot 7, the OR element 8, the second pulse shaper 9, the key 10 modulators, frame sync pulse input 11, traverse code input 12, write signal input 13, gate pulse output 14, read enable signal output 15, output of the work cycle termination signal 16.

The control unit operation mode of the transmitting television tube works as follows.

The transmission tube operation mode control device provides two modes of operation of the television transmission tube (PTT). The selection of the mode is determined by the specific task of examining the light signals.

The conversion code at input 12 is set equal to one and before starting work on the write pulse at input 13 is written to subtractive counter 6. The first switch is set to 2 by input signals at its control inputs to its output . The second switch 3 is set to a state in which the output from input 4 is output.

The operation of the device begins with the arrival of a signal at input 4. On its front, the first driver 1 starts and at its output a pulse of a predetermined duration appears, which, having passed through the first switch 2, enters the input of the second driver 9. At its output a pulse is generated amplitude, which determines the potential accumulation potential of the PTT target with the modulator locked. At the same time, the signal from input 4 through the second switch 3 is fed to the counting input of counter 6, at the output of which a transfer signal appears. According to the transfer signal, the third driver 5 generates a unlocking pulse of a duration that is multiple to a vertical scanning period (for example, equal to four half-frames). This pulse opens the modulator key 10, ensuring the accumulated information is read into the external memory. On the pulse front of the modulator with a single-vibrator 7, a signal is generated, which, having passed through the element OR 8, will write into the counter 6 a conversion code equal to one.

With the arrival of the next signal at input 4, the operation cycle repeats. This continues until the amount of information sufficient for reliable measurements has been accumulated. In this mode, long-term accumulation is not carried out on the target, but, for example, in a computer memory. Therefore, after each short-term accumulation on the target, which is synchronous, for example, with laser radiation, a reading and erasing cycle follows.

The second mode of operation is pulse analog accumulation. In this mode, the PTT is accumulated on a target for a series of, for example, laser shots. The number of laser shots in a series is specified by a conversion code, for which it is set at input 12 to be greater than one. Other control inputs are similar to the first mode.

Claims (1)

Invention Formula A transmission television tube operating mode control device comprising a first pulse shaper, whose input is an input of sync pulses, a second pulse shaper, the output of which is a gate pulse output, connected in series to a third pulse shaper, the first input of which is a frame sync pulse signal, and the modulator key, the output of which is the output of the read resolution signal, characterized in that, in order to expand the functional possibilities by providing a mode of pulsed accumulation of a transmitting television tube, an OR element is added, a subtracting counter, a single vibrator, and the first and second switches, while the output of the third pulse generator is connected to the control inputs of the first and second switches and the single vibrator, the output of which is the output of the loop ending signal operation and is connected to the first input of the OR element, the second input of which is the signal input write, and the output is connected to the control input of the detracting counter, the setup input of which is the input of the conversion code, the counting input is connected to the output of the second switch, and the output is connected to the second input of the third pulse generator, the signal input of the first switch is connected to the output of the first pulse generator , output - with the input of the second pulse generator, and the first and second signal inputs of the second switch are combined respectively with the input of the first pulse driver and with the first input of the third form ovatel pulses.