SU403091A1 - In PTB ^ Ш / ^ й; 1Ш ::: РШе - Google Patents

Description

one

The invention relates to television technology.

A known converter of television standards, comprising a cathode ray tube, recording and erasing scan generators, a delay shaper, a switch, erasors of erasing light and quenching pulses, a reproduction lens and a memory vidic with scan generators and an indicator.

However, the known converter has an insufficient conversion quality.

In the proposed transducer, the outputs of the impulse sweep and readout generator and readout generators are connected via a selection unit and pulses of coincidence with the input of a frame and frame emulsions (exactly different | p11ki). with the trigger phase of the launch, the output of which is connected to the junction of the CRT system of the indicator.

The drawing shows the block diagram of the proposed Converter.

The converter contains a projection cathode ray tube (CRT) with a deflecting system 2; the input to it consists of an adder 3, a horizontal line generator 4, an eraser 5 line generator, a driver 6, a switch 7, a frame generator 8, an erasable scanner, a frame 9 generator, a backlight erasing driver 10 and a block of line recording and readout; and the image conversion unit forms an electron beam tube /, a deflection system 2, a reproduction lens 11, a storage vidicon 12 with a deflection system 13, a horizontal reading generator 14; In addition, the device includes a frame read oscillator 15, a read video amplifier 16, a detector kinescope 17, a deflecting system 18, a synchronizer 19, a pulse extraction unit 20 matching 1, and a variable start phase scan generator 21.

The described converter works as follows.

In the conversion unit on the Vidicoia target, using the line-erase and write blocks, the frame-scan generator, line-by-line erasing is performed before the last 1:;: south ("starOX)" image 1; 1 and line-by-line non-radioactively after erasing the iOiBoro image.

A television sweep generator is read out, and the input to the image conversion unit is common for the Vidicon and the kinescope indicator.

Generator of frame scan for readout in the deflection system of a vidicon current pulse.

The coincidence block imitation block generates pulses corresponding to l: omeits of time, coincidence of the recording (light) and reading (electronic) beams on M1 of the speed of the icon. The indicated times also correspond to the times ti, (2, 1h, .... tn coincidence in magnitude of instantaneous values, normalized but amplitude, 1i: current pulses of staffing-off recording and reading.

The block diagram. EXAMPLE of pulsoveo1b, a fall in a particular case may contain elements of comparison of the named current emulsions.

Another way to separate the coincidence pulses can be to use for this purpose a wireless signal at the output of the video amplifier, which is available at those points in time that correspond to the recording and erasing rays on the video signal.

The pulses received at the output of the emulsion pulses selection unit are fed to the input of a variable start generator 21 connected to an indicator.

Due to the combined action of the allocation unit and the coincidence pulses and the generator 21, the beginning of the personnel indicator always corresponds to the coincidence point of the interrupting (optical) and reading (electronic) rays on the CRT memory. The phase of the indicated time instants relative to the frame of the frame readout television sweep on the target of the vidicon is continuously changing.

As a result, the erasing strip is not visible on the image formed on the final indicator screen (i.e., it is located at the beginning or at the end of the frame), and the object image relating to the screen becomes separate and continuously moving in the direction of the personnel television scan with a speed corresponding to the scanning speed of the object by the sensor signal, or with the speed of image recording on the memory target. In this case, any part of the object is observed on the screen for

the frame recording time of the target CRT memory simultaneously with the movement due to the fact that the coincidence pulse selector unit and the sweep pulse generator with the laser field were introduced;

Subject and reference about the and “

TV standards converter

containing a projection cathode ray tube, the video signal is fed to the charging elbow of which, and the horizontal line generators of recording and erasing are connected to the deflecting system through

the inputs of which are synchronization pulses of rows, iriche and the input of the erasure sweep generator, are fed through the delay shaper 1 (which is another output connected to the control input of the switch, the inputs of which are connected to the outputs of the frame scanner georearators and the erase, and the latter is connected to the generator output of the frame sweep of the ziisi, to which the input of which iodan a frame synchronization pulse, and the switch outputs are connected to a single-sided sig- nix electr) of a single-beam tube and from x x 0: A detector of erasable emulsions of the light of the light, the outputs of which are connected to the electrodes of the projection electron-beam tube and a pickup vidicon optically connected to the tube through the re-production lens, is connected to the deflection system of the videoconverter with the generators of the horizontal and vertical readout scans, the inputs of which are connected to the deflection system of the videocondenser, and the inputs of the horizontal and vertical readout scans are connected to the deflecting system of the videoconductor, the inputs of the horizontal and vertical scans of the readout lens a synchronous gaming device, while the output of the storage vidicon is connected via a read video amplifier to the kinescope indicator, the deflection system of which is connected to the output of the Readout scanner, characterized in that, in order to improve the quality of the image and to obtain an image moving at the end of the final indicator with a speed

The object view, the outputs of the geerators of the frame sweep pulses and the readings are connected through a pulse extraction unit to coincide with the input of a frame sweep emulator with interlacing start phase, the output of which is connected to the deflection system of the indicator kinescope. ICUHxpoHusa impulses / lines Video signal pulse synchronization Kadpot Window indicator