Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes

Introduced: January 1980

CPC subdivides this area 3x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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G09G 3/001 +2 CPC CPC only CPC only
G09G 3/004 CPC only CPC only
G09G 3/005 CPC only CPC only
G09G 3/006 CPC only CPC only
G09G 3/007 CPC only CPC only
G09G 3/008 CPC only CPC only
G09G 3/02 by tracing or scanning a light beam on a screen since 1980 +1 CPC IPC+CPC Available in IPC and CPC
G09G 3/03 +1 CPC CPC only CPC only
G09G 3/04 for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments since 1980 +1 CPC IPC+CPC Available in IPC and CPC
G09G 3/20 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 since 1980 +4 CPC IPC+CPC Available in IPC and CPC