G
PHYSICS
G
PHYSICS
G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G09G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
G09G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
G09G3/00
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
G09G3/00
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
G09G3/20
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; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
G09G3/20
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; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
G09G3/22
using controlled light sources
G09G3/22
using controlled light sources
G09G3/30
using electroluminescent panels
G09G3/30
using electroluminescent panels
G09G3/32
semiconductive, e.g. using light-emitting diodes [LED]
G09G3/32
semiconductive, e.g. using light-emitting diodes [LED]