SU698164A1 - Apparatus for magnetic recording and reproducing television signal - Google Patents

Description

The invention relates to television and can be used for recording and reproducing signals of broadcast and small-frame television systems in reporting conditions.

A device for magnetic recording and reproducing a television signal is known, which contains a converter of the original signal, the output of which is connected to a tape unit associated with a unit of rotating magnetic heads, whose output is connected to the corresponding inputs of the playback switch through a preamplification of the link, reproducible / signal corrector , whose output is connected to the detector, at the same time the switch of the signals is connected to the first input of the corrector of the reproduced signal ktsii which outputs are connected to respective contacts connected in parallel adjustable potentiometers 1.

However, the known device has a relatively low quality recording and playback of the television signal.

The aim of the invention is to improve the quality of recording and reproducing a television signal.

For this purpose, into a magnetic recording and playback device of a television signal, containing an initial signal converter, the output of which is connected to a tape recorder associated with a unit of rotating magnetic heads, the outputs of which are connected to the corresponding inputs of the playback switch through a preamplifier, link, equalizer at the reproducing signal, the output of which is connected to the detector, at. This is connected to the first input of the corrector of the reproduced signal by the switch of the correction signals, the outputs of which

0 sub-rakes to the corresponding adjustable contacts of parallel-connected potentiometers, an adder and a separator are entered, the first and second inputs of the adder are sub-comm.

5, respectively, to the output of the playback switch and to the corresponding block of the rotating magnetic heads, and the output of the adder via a communication line is connected to the input of the splitter, the first and second WELLWEARS of which are connected to the second input of the corrector of the reproduced signal and to the corresponding input of the switch.

The drawing shows a structural electrical circuit of the proposed device.

A magnetic signal recording and reproducing device includes a source signal converter 1, a tape recording unit 2, a rotating magnetic heads unit 3, a preamplifier 4, a playback switch 5, an adder 6, a communication line 7, a separator 8, a reproducer 9 equalizer 9, a detector 10, switch 11 correction signals and parallel connected potentiometers 12.

The device works as follows.

The signal to be recorded is fed to converter 1, where it is subjected to frequency conversion and amplification to the level required. for recording magnetic 1 / t heads on a tape in a tape unit 2. During playback, the intermittent signal from the tape is amplified by the preamplifier 4, combined into a continuous signal in switch 5 and fed to the adder 6, where the high frequency signal is summed with the sensor signal of the block 3, Next, the reproduced signal is transmitted through the communication line 7 to the splitter 8. Here, the signal of the α-unit 3 separates from the high-frequency signal and goes to the switch 11, which connects to the equalizer 9 a correction circuit - tentsiometr 12 is that the magnetic head unit 3, which is currently in. contact with magnetic media. The high-frequency signal is fed to the equalizer 9, in which it is subjected to a corresponding correction, the corrected signal is fed to the detector 10, which is inversely transformed, as a result

what the output signal of the device is.

The proposed device allows to significantly simplify the reporting equipment, which makes it possible to use it in non-operator television systems.

Claims (1)

1. USSR author's certificate No. 285279, cl. G 11 V 15/24, 1970 (prototype). & YU NAN - 12 Ui2