Transmitting device of a predetermined transmission bandwidth, w

Television – Image signal processing circuitry specific to television – Transition or edge sharpeners

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348630, H04N 521

Patent

active

055216498

ABSTRACT:
An anti-distortion device, connected downstream of a transmitting device (2) with a determined transmission bandwidth for transmitting a input signal (Se) with signal jumps (3), wherein the delay time (Tv15) of the delay element (15) is such that the front slope (24) of the detection signal (S18) of the second signal jump detector (18), produced when a slope (4) of the useful signal (Sa1) is detected, is at least partially located in the time range (T25) of the trailing edge (25) of the corresponding detector signal (S17) of the first signal jump detector (17), that the delay time (Tv11) of the delay element (11) is equal to half the period (T5) of the overshoot (5) superimposed on the useful signal, and following the signal slope (4) of the transmitted signal (Sa1), and that the delay element (10) is connected between the output (1) of the transmitting device (2) and the input (11.1) of the delay element (11).

REFERENCES:
patent: 4758891 (1988-07-01), Hitchcock et al.
patent: 5177600 (1993-01-01), Monta et al.
patent: 5179438 (1993-01-01), Morimoto
patent: 5293541 (1994-03-01), Ito
patent: 5329316 (1994-06-01), Kang
"Equalizer Calculations for Amplitude and/or Frequency Parameters in TV Cable" by Evnevich-Checkan in: Elektro, Bd 26, 1972. H.2, S.6-12.

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