DIFF Subgroup
H04N 5/165 Full Title
Details of television systems (scanning details or combination thereof with generation of supply voltages H04N3/00) > Picture signal circuitry for video frequency region (cameras or camera modules comprising electronic image sensors, or control thereof H04N23/00) > Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level