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IPC Subclass
G09G

ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION

Introduced: January 1980

Last revised: January 1990

Classification Context

Section:
PHYSICS
Class:
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
Subclass:
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION

Description

G09G encompasses electrical and electronic circuits and systems for controlling display devices that use static visual elements to present changing information. This includes control architectures for technologies such as cathode-ray tubes (CRTs), liquid crystal displays (LCDs), light-emitting diodes (LEDs), plasma displays, and other electro-optical devices. The classification covers driver circuits, timing generators, memory interfaces, signal processing, and refresh mechanisms necessary to modulate static display components into dynamic visual output. Related display-specific subcategories address particular technologies (e.g., G09G 3 for CRTs, G09G 5 for specific display types), while G09G itself focuses on the broader control infrastructure and general circuit principles applicable across display modalities.

Scope Notes

Glossary: Indicating device indicating devices display device To present to display Variable information information with variable content Static means to display information means not using movement of macroscopic parts for information build-up, e.g. displays using LCDs, LEDs, DMDs, ... for image build-up. | Limiting references: Display devices per se, structural details of the indicating devices, such as panels or tubes per se, or assemblies of individual light sources, which are covered by the relevant (sub)groups listed below: . Microstructural devices comprising flexible or deformable elements, e.g. displays comprising elastic microtongues or membranes Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating, e.g. displays based on interference in an adjustable optical cavity Optical devices or arrangements using movable or deformable optical elements for controlling the intensity of light, e.g. displays based on the rotation of particles under the influence of an external field, e.g. twisting microsphere displays Optical devices or arrangements using movable or deformable optical elements for controlling the direction of light, e.g. displays using a reflecting micromechanical device, like a MEMS mirror, DMD Devices or arrangements for the control of the intensity, phase, polarisation or colour of light arriving from an independent light source based on liquid crystals, e.g. single liquid crystal display cells Devices or arrangements for the control of the intensity, phase, polarisation or colour of light arriving from an independent light source based on electrochromic elements, e.g. electrochromic displays Devices or arrangements for the control of the intensity, phase, polarisation or colour of light arriving from an independent light source based on electrophoresis, e.g. electrophoretic displays Projectors and projection type viewers adapted for projection of either still pictures of motion pictures Digital output to display device Indicating arrangements being the ends of optical fibres for variable information in which the information is built-up on a support in which the desired character or characters are formed by combining individual elements Indicating arrangements being incandescent filaments for variable information in which the information is built-up on a support in which the desired character or characters are formed by combining individual elements Indicating arrangements being gas discharge devices for variable information in which the information is built-up on a support in which the desired character or characters are formed by combining individual elements, e.g. plasma display panels Indicating arrangements being semiconductor devices for variable information in which the information is built-up on a support in which the desired character or characters are formed by combining individual elements, e.g. light emitting diode displays Indicating arrangements being liquid crystals for variable information in which the information is built-up on a support in which the desired character or characters are formed by combining individual elements, e.g. liquid crystal displays Plasma display panels , Cathode ray tubes Electroluminescent light sources Assembling printed circuits with electric components, e.g. with resistor, displays consisting of a printed circuit board carrying a matrix of single LEDs Devices consisting of a plurality of semiconductor or other solid-state component formed in or on a common substrate, specially adapted for light emission, e.g. light emitting diode displays Solid state devices using organic materials as the active part specially adapted for light emission, e.g. displays using OLED or PLED The following subject-matter is also not covered: . Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof Scanning details of television systems Projection arrangements for image reproduction Details of colour television systems Projection devices for colour picture display Colour television systems Stereoscopic television systems Circuit arrangements for electric light sources in general

Related Keywords

CONTROL(S) arrangements or circuits for indicating devices using static meansDISPLAYINGcomputer GAME(S) using screen displayscontrol arrangements or circuits for INDICATING devices using static meansINDICATING arrangements for displaying information

3 direct subcodes

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