VIDEO SIGNAL PROCESSOR

VIDEO SIGNAL PROCESSOR

PURPOSE: To provide an EDTV-II receiver in which dot disturbance is avoided and an effect of a reinforcement signal is obtained in the separation method of a color signal and the reinforcement signal without pre-combing. CONSTITUTION: The processor is provided with an entry section 52 receiving a co...

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Hauptverfasser: NOIDE YASUSHI, KITA HIROYUKI, HOSHINO TAKANARI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator NOIDE YASUSHI
KITA HIROYUKI
HOSHINO TAKANARI
description PURPOSE: To provide an EDTV-II receiver in which dot disturbance is avoided and an effect of a reinforcement signal is obtained in the separation method of a color signal and the reinforcement signal without pre-combing. CONSTITUTION: The processor is provided with an entry section 52 receiving a color signal C and a horizontal resolution reinforcement signal HH' after frequency shift processing, a 2nd delay processing means 51 consisting of a field memory 53 of a 1st delay processing means 50, a subtractor 54, a line memory 55 and an adder 56, an amplitude detection means 58 consisting of an amplitude comparator 57 and a selection means 59 selecting an output signal 1) HH' or a 2) HH', and a signal separate means 60 or the like. Then the amplitude detection means 58 compares an output of the 1st delay processing means 50 with an output of the 2nd delay processing means 51, the selection means 59 selects the signal HH' of a minimum amplitude and provides an output. Thus, crosstalk and dot disturbance in the vertical non-correlation section are prevented.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title VIDEO SIGNAL PROCESSOR
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