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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04N 3/30

otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Scanning details of television systems; Combination thereof with generation of supply voltages > by means not exclusively optical-mechanical > otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

CPC:

Scanning details of television systems; Combination thereof with generation of supply voltages > by means not exclusively optical-mechanical (H04N3/36 takes precedence) > otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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  • H04N 3/32 Velocity varied in dependence upon picture information IPC+CPC Available in IPC and CPC
  • H04N 3/34 Elemental scanning area oscillated rapidly in direction transverse to main scanning direction IPC+CPC Available in IPC and CPC