SU1070588A1 - Device for transmitting television signals - Google Patents

Abstract

A DEVICE FOR TRANSMITTING TELESIGNALS, containing a clock pulse generator, the output of which is connected to the first input of the linear unit, the first output of which is connected to the input of the transmitter, the output of which is the output of the device, the second output of the linear unit is connected to the pulse counter, the outputs of which are connected to the inputs of the first and second decoders, respectively, the outputs of which are connected to the first and second control inputs of the first and second information input units, respectively; the outputs of which are connected to the corresponding information inputs of the first information input block, the output of which is combined with the output of the second information input block and connected to the input of the coding block whose output is connected to the second input of the linear block, the telemetry sensor block whose outputs are connected to the corresponding inputs of the second an information input unit, characterized in that j, in order to increase reliability, (L, a pulse shaper, an amplifier, a key, the third and fourth outputs of the linear the unit is connected to the corresponding inputs of the pulse generator, the output of which is connected to the input of the amplifier, the output of which is connected to the inputs of the first and second keys, the outputs of which are connected respectively to the third control inputs of the first and second information input units.

Description

When the contact of the sensor 10 is closed or when the output transistor of the analog-digital converter 12 is open, the output transistor of the block 8 and / or the block 9 opens at the corresponding position of the counter 5, and the signal goes to block 3, in which there is a coding of impulses or pauses. In the linear unit 2, a clock series coming from generator 1 is combined with elongated pulses or pauses from the coding unit 3. As a result, a code series is formed containing clock pulses and pulses (pauses that carry information about the state of the remote signaling sensors and telemetry sensors, which through the transmitter enters the communication line. In contrast to the known devices, in which the supply voltage to the input elements of the information input blocks is continuously applied, in the proposed device e method applied pulsed power input elements happens:. leduyuschim manner

From the linear block 2, the code series arrives at the imaging unit 13, and at the first input it is right, and the second input is inverse. This provides the output of the imaging unit 13 short - (2-3 ms) negative pulses corresponding to the leading edges of the pulses and pauses of the code

series. The pulses from the output of the imaging unit 13 through the amplifier 14 are controlled by a switch 15, by means of which pulsed power is supplied to the input elements of the first information input block 8, From the output of the imaging device 13 through the amplifier 14, the pulses are controlled by the second key 16, by which pulsed power is supplied input elements of the second optocoupler unit 9 input information. Thus, the supply voltage to the input elements of the information input blocks arrives on each pulse (pause) of the code series for a time of 2-3 ms and does not depend on the number of long pulses (pauses j in the series.

Transmission of television signals (Fig. 2 / at the most characteristic points of the device: at the output of the generator 1, at the output of the coding unit 3, at the output of the linear unit 2, at the output. Formed 1 13 pulses, supply voltage at the input element of the block 8 (block 9) .

Due to the fact that the power supply to the input elements occurs within five times less than the duration of a clock pulse (pause) and fifteen times less than the duration of a code pulse (pause), the service life of the input elements of information input units increases and, consequently, the reliability of the transmission device increases. television signals.

ABOUT

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Claims (1)

DEVICE FOR TRANSMISSION OF TELESIGNALS, containing a clock generator, the output of which is connected to the first input of the linear block, the first output of which is connected to the input of the transmitter, the output of which is the output of the device. VA, the second output of the linear block is connected to a pulse counter, the outputs of which are connected to the inputs of the first and second decoders, respectively, the outputs of which are connected respectively to the first and second control inputs of the first and second blocks of information input, a signaling sensor block, the outputs of which are connected to information inputs of the first information input unit, the output of which is combined with the output of the second information input unit and connected to the input of the coding unit, the output of which is connected to the input of the linear block, the block of telemetry sensors, the outputs of which are connected to the corresponding inputs of the second information input block, characterized in that, in order to increase reliability, a pulse shaper, an amplifier, a key, the third and fourth outputs of the linear block are connected to the corresponding the inputs of the pulse shaper, the output of which is connected to the input of the amplifier, the output of which is connected to the inputs of the first and second keys, the outputs of which are connected respectively to the third control inputs of the first and second input information blocks. cl