IPC Subgroup
H04N 3/223 Controlling dimensions
Introduced: January 1985
Last revised: January 2006
Full Title
Scanning details of television systems; Combination thereof with generation of supply voltages > by means not exclusively optical-mechanical > by deflecting electron beam in cathode-ray tube > Circuits for controlling dimensions, shape or centering of picture on screen > Controlling dimensions
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
Scope Notes
Limiting references: Circuits for controlling dimensions of picture on screen by maintaining the cathode-ray tube high voltage constant