SU513528A1 - TV signal correction device - Google Patents

Description

(54) TELEVISION CORRECTION DEVICE 12

SIGNAL

with certain weights obtained from LZ 9, 10, respectively, where T is the Kotelnik ova interval.

Due to the input to the inputs of the adder 11 of the signals of the differential δ (t.) And predistorted n (t), a reconstructed video signal is formed at its output, which is close to the original one. The limited differential video signal, Ct) with the border 3 comes to

..,

adder 4, to another input of which a cut attenuator 5 is fed the residual source video signal b (.t), the required OLE signal recovery at the receiving rake (5 is the coefficient chosen experimentally).

From adder 4, the pre-distorted video signal 6. (t) ST (.0 enters via communication channel 6 to the correction system consisting of adder 7 and LZ 12, 13, V LZ 12, 13; the video signal is delayed by T and 2 T, respectively. The correction system restores the video signal A (h, close to j C t).

From the adder 7, this video signal is fed to the video receiver unit 8.

Claims (1)

Invention Formula A television signal correction device containing a television signal sensor, the output of which is connected to the input of a video receiving unit through a series-connected subtractive. block, double-sided limiter, adder, connected by the second input through an attenuator to the first input of the Subtraction unit, communication channel, second adder, characterized in that, in order to improve noise immunity, the output of the double-sided limiter is simultaneously connected to the inputs of the first and second delay lines through an additional adder whose second input is simultaneously connected to the outputs of the said delay lines and to the second input of the subtracting unit, while the output of the second adder is connected to its second input through parallel included tracks tew and fourth delay lines.