SU495794A1 - Stereo-television transmitting device - Google Patents

Description

one

This invention relates to stereo television.

A stereo-television transmitting device containing a traveling beam camera, a photodetector, an optical modulator mounted in front of the camera, a photodetector unit, three outputs of which are connected to the corresponding inputs of the encoding unit with four inputs and outputs, is known, and its first output is connected to the input of the transmitter via a television channel.

However, the well-known stereo television transmitting device is complex.

The purpose of the invention is to simplify the device.

This is achieved by the fact that in the proposed device the output of the photodetection is connected through the driver of working pulses to the fourth input of the coding unit, the second output of which is connected to the camera of the traveling beam, and the third and fourth outputs to the corresponding inputs of the driver of reference pulses connected to the optical modulator.

FIG. 1 shows a functional diagram of the proposed device; in fig. 2 - time diagrams that show his work.

Stereo-television transmitting device contains a camera 1 traveling beam, a photodetector 2, an optical modulator 3 installed in front of the camera 1 a traveling beam, a unit of photodetectors 4, three outputs of which are connected to the corresponding inputs of the coding unit 5 with four inputs and outputs, and its first output is connected to the transmitter 6 through the television channel 7, the second output to the camera 1 of the traveling beam, and the third and fourth outputs to the corresponding inputs of the driver reference

pulses 8 connected by an output to the optical modulator 3, and a driver of working pulses 9 through which the output of the photodetector 2 is connected to the fourth input of the coding unit 5.

Stereo-television transmitting device operates as follows.

The optical modulator 3 is controlled by reference pulses (FIG. 2 g) of the reference pulse generator 8, which are phased in

relative to the leading edge of horizontal sync pulses (Fig. 26) and have a duration of not more than 0.005 µs, which excludes their influence on the formation of video signals (Fig. 2a) by the block of photodetectors 4. Reference

the pulses are formed from the oscillations of the subcarrier frequency fn (Fig. 20), and their frequency. During the action of the reference pulses, the optical modulator 3 does not transmit the light beam of the camera 1 of the traveling beam. At the appropriate moments, short light imi- tudes are formed, which, reflected from any part of the scene, are received by a high-frequency photoreceptor 2, at the output of which pulses appear (Fig. 2e) arriving at the input of the operating pulse former 9. The reference pulses are also fed here. . In the driver of working pulses 9, the time interval between the reference and received pulses is recalculated in the time interval between the on-up and working pulses, which is normalized to the linear parallax from each corresponding detail of the transmitted scene. The working pulses (Fig. 2e) from the driver of the working pulses 9 enter the coding unit 5 and are kneaded there into a video signal preliminarily delayed in order to simplify the receiving device for a time equal to the follow pulse of the reference pulses (Fig. 2z / s).

Formula and 3 optics

Stereo-television transmitting device containing a traveling beam camera, a photo receiver, an optical modulator installed in front of the camera, a photodetector unit, three outputs of which are connected to the corresponding inputs of the coding unit with four inputs and outputs, and its first output is connected to the transmitter input via a television channel that is different the fact that, in order to simplify the device, the output of the photodetector is connected through the driver of working pulses to the fourth input of the coding block, the second output of which nen camera running beam and the third and fourth outputs - to the corresponding inputs the reference pulse shaper connected to the output of the optical modulator.

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