IPC Subgroup
H04N 3/23 Distortion correction, e.g. for pincushion distortion correction, S-correction
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 > Distortion correction, e.g. for pincushion distortion correction, S-correction
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
2 direct subcodes
Child Classifications
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- H04N 3/233 using active elements
- H04N 3/237 using passive elements