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PCE
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CPC Subgroup
H04N 5/57

Control of contrast or brightness

Full Title

Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Receiver circuitry (H04N5/14 takes precedence) > Control of contrast or brightness

2 direct subcodes

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  • H04N 5/58 in dependence upon ambient light
  • H04N 5/59 in dependence upon beam current of cathode ray tube