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PCE
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CPC Subgroup
H04N 5/54

for positively-modulated picture signals (H04N5/53 takes precedence)

Full Title

Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Receiver circuitry (H04N5/14 takes precedence) > Automatic gain control > for positively-modulated picture signals (H04N5/53 takes precedence)