SU465752A1 - Signal conditioner for sighting television images of objects - Google Patents

Description

connected to the adder 18 and to the input of the amplifier limiter 19, which is connected through the driver of the impulses 20 with the circuit "And 21, to which the amplifiers-limiters 22 and 23 are connected. Amplifiers-limiters 24 and 25 are connected with the logic" And 9.

The shaper works as follows.

Synchronous input pulses initiate a generator 1, which produces a single-line horizontal frequency sawtooth signal. Similarly, a frame-shaped sawtooth signal is generated by generator 13.

These signals are fed to the inputs of the sine-cosine distributor of signals 2 and 14, where the signals sin p, cos p are formed respectively. The angle of rotation of the rotor of the distributors 2 and 14 thus sets the trigonometric distribution of the amplitudes of the sawtooth signals with a phase that varies in steps (0 ° or 180 °).

In the variable delay blocks 3 and 15, rectangular short pulses of the horizontal and frame frequencies, respectively, are formed, the phase of which is proportional to the input DC signals. The inputs of the anchoring blocks 4, 5, 16, 17 are pulsed with variable delay blocks and sawtooth signals from the valves 2 and 14.

The purpose of the nodes is to “tie the potential zero point of the sawtooth signal (for example, sin p) to the instant of the pulse of the variable delay block. The output signal of the anchoring blocks also has a sawtooth shape: at the output of blocks 4, 5, respectively, the horizontal frequency, at the output of blocks 16 and 17 - the frame frequency.

The outputs of the anchoring blocks are converted into rectangular shape by limiting amplifiers 22-25. Amplifiers 22 and 25 each have two (one inverted) outputs.

The choice of one or another output of the amplifiers 22 and 25 is carried out using the keys 26 and 27. In the adders 6 and 18, the additive addition of sawtooth signals is performed.

Limit amplifiers 7 and 19 are similar in purpose to amplifiers 22-25, but have an adjustable threshold limit. The shapers of the short pulses 8 and 20 form short (and, for example, 0.1 microseconds) rectangular pulses of a circle.

The operation of nodes 22, 23 and 20 is similar to the operation of nodes 24, 25 and 8.

The rotation of the semi-axes around their point of contact is carried out by rotating the rotor of the distributors 2 and 14 by the angle p. In this case, the signals at the outputs of the adders 18 and 6 change according to the laws of sine and cosine from the angle p, as well as the sequence of pulses at the output of the formers 8 and 20.

The output signals from the limit amplifiers 22-25 do not change until the direction

the angle p does not pass through the vertical or horizontal lines of the raster corresponding to the moment of the phase change of the output signals of the distributors 2 and 14.

The rotation around an arbitrary raster point is performed using the distributor 12. At the same time, the law of sine and cosine is changed from the angle a and the output signals of the direct current R sinu and R cosa so that it causes the same change in the phase of the horizontal and frame frequency pulses variable delays 3 and 15. In accordance with this, the potential-bullet points of the output sawtooth signals of the anchoring blocks 4, 5, 16 and 17 change in phase, which leads to a change in the form of the output signals of the channels.

The entire reference system is moved along or across the rows of the raster with the help of direct current input signals proportional to phase changes of output signals of variable delay blocks 3 and 15.

The movement of the semiaxes along or across the direction of any of the said semiaxes is carried out with the aid of direct current input signals, the change of which leads to a proportional change in the phase of the pulse fronts.

Moving the pacirpa direction is done by signal R.

The change in the signal level R leads to a linear change in the output signals R sina and R cosa of the distributor 12 and, respectively, proportional to the change in the phase of the pulses of the delay units 3 and 15.

Subject invention

A signal conditioner for viewing a television image of objects, containing a sine-cosine DC signal distributor, a sawtooth voltage formers of horizontal and frame frequency, variable-delay blocks for rows and frames, a driver for circumference marks, and a two-channel device for generating sight lines, each channel of which contains sine-cosine distributor of sawtooth signals of horizontal and frame frequency, limiting amplifier and shaper of short impu It is connected to a common logical OR circuit, characterized in that, in order to form a mobile measuring system on the screen of the video monitoring device, in each of the formation channels, the outputs of the distributors and variable delay blocks are connected to the inputs of two horizontal and frame frequency locking blocks, connected to the outputs of the amplifier m-limiters and to the inputs of the adder, the output of which is through the amplifier-limiter and shaper short pulses together with the outputs of the smart amplifiers-limiter through the switches of the position of the sightings connected to the inputs of the logic circuit "And connected to

common for both channels forming the logical scheme "OR.