in dependence upon ambient light

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of television systems > Receiver circuitry > Control of contrast or brightness > in dependence upon ambient light

CPC:

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 > in dependence upon ambient light

No child classifications to compare. This is a leaf node in both IPC and CPC.