IPC Subgroup
H04N 3/1 by means not exclusively optical-mechanical
Introduced: September 1968
Last revised: January 2006
Full Title
Scanning details of television systems; Combination thereof with generation of supply voltages > by means not exclusively optical-mechanical
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- PICTORIAL COMMUNICATION, e.g. TELEVISION
5 direct subcodes
Child Classifications
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- H04N 3/12 by switched stationary formation of lamps, photocells, or light relays
- H04N 3/14 by means of electrically scanned solid-state devices
- H04N 3/16 by deflecting electron beam in cathode-ray tube
- H04N 3/28 producing multiple scanning, i.e. using more than one spot at the same time
- H04N 3/3 otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines