This subclass covers indicator consoles, i.e. arrangements or circuits for processing control signals to achieve the display, e.g. for the calling up, reception, storage, regeneration, coding, decoding, addressing of control signals. [3]
Contrary to subclass Fulltext... Hierarchy... Expanded...H04N, in which are classified display devices capable of representing continuous brightness value scales, this subclass is limited to devices using only a discrete number of brightness values, e.g. visible/non-visible. [3]
The visual effect may be produced by a luminescent screen scanned by an electron beam, directly by controlled light sources, by projection of light, from controlled light sources onto characters, symbols, or elements thereof drawn on a support, or by electric, magnetic, or acoustic control of the parameters of light rays from an independent source. [3]
the beam directly tracing characters, the information to be displayed controlling the deflection as a function of time in two spatial co-ordinates, e.g. according to a cartesian co-ordinate system [3]
G09G 1/10
· · ·
the deflection signals being produced by essentially digital means, e.g. incrementally [3]
G09G 1/12
· · ·
the deflection signals being produced by essentially analogue means [3]
G09G 1/14
· ·
the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible [3]
G09G 1/16
· · ·
the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster [3]
G09G 1/18
· · ·
a small local pattern covering only a single character, and stepping to a position for the following character, e.g. in rectangular or polar co-ordinates, or in the form of a framed star [3]
by tracing or scanning a light beam on a screen [3]
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 [3]
by control of light from an independent source [3]
G09G 3/18
· · ·
using liquid crystals [3]
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 [3]
G09G 3/22
· ·
using controlled light sources [3]
G09G 3/24
· · ·
using incandescent filaments [3]
G09G 3/26
· · · ·
to give the appearance of moving signs [3]
G09G 3/28
· · ·
using luminous gas-discharge panels, e.g. plasma [3]
G09G 3/30
· · ·
using electroluminescent panels [3]
G09G 3/32
· · · ·
semiconductive, e.g. diodes [3]
G09G 3/34
· ·
by control of light from an independent source [3]