for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

Introduced: January 1980

Full Title

Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes > for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix

CPC subdivides this area 3x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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G09G 3/2003 CPC only CPC only
G09G 3/2007 +8 CPC CPC only CPC only
G09G 3/2085 +1 CPC CPC only CPC only
G09G 3/2092 +1 CPC CPC only CPC only
G09G 3/22 using controlled light sources since 1980 IPC+CPC Available in IPC and CPC
G09G 3/34 by control of light from an independent source since 1980 +4 CPC IPC+CPC Available in IPC and CPC