|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G09 |
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS

|  | G09G |
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (lighting in general Fulltext... Hierarchy... Expanded...F21; instruments for displaying electric variables or waveforms Fulltext... Hierarchy... Expanded...G01R 13/00; controlling light beams Fulltext... Hierarchy... Expanded...G02F 1/00; indicating of time by visual means Fulltext... Hierarchy... Expanded...G04B 19/00, Fulltext... Hierarchy... Expanded...G04C 17/00, Fulltext... Hierarchy... Expanded...G04G 9/00; arrangements for transferring data between computers and peripheral equipment Fulltext... Hierarchy... Expanded...G06F 3/00; visible signalling arrangements or devices Fulltext... Hierarchy... Expanded...G08B 5/00; traffic control systems Fulltext... Hierarchy... Expanded...G08G; display, advertising, signs Fulltext... Hierarchy... Expanded...G09F, e.g. static indicating arrangements comprising an association of a number of separate sources or light control cells Fulltext... Hierarchy... Expanded...G09F 9/00; static indicating arrangements comprising integral associations of a number of light sources Fulltext... Hierarchy... Expanded...H01J, Fulltext... Hierarchy... Expanded...H01K, Fulltext... Hierarchy... Expanded...H01L, Fulltext... Hierarchy... Expanded...H05B 33/12; circuits in pulse counters for indicating the result Fulltext... Hierarchy... Expanded...H03K 21/18) [3]

|  | G09G |
Note(s) This sub-class concerns 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. This sub-class is not concerned with the structural details of the indicating devices, such as panels or tubes per se, or assemblies of individual light sources which are classified in the relevant sub-classes, e.g. Fulltext... Hierarchy... Expanded...H01J, Fulltext... Hierarchy... Expanded...H01K, Fulltext... Hierarchy... Expanded...H01L, Fulltext... Hierarchy... Expanded...G02F, Fulltext... Hierarchy... Expanded...G09F, Fulltext... Hierarchy... Expanded...H05B. [3] In contrast to sub-class Fulltext... Hierarchy... Expanded...H04N in which are classified display devices capable of representing continuous brightness value scales, the present sub-class 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]

|  | G09G 1/00 |
Control arrangements or circuits for cathode-ray tube indicators (cathode-ray oscilloscopes Fulltext... Hierarchy... Expanded...G01R 13/20; television Fulltext... Hierarchy... Expanded...H04N) [3]

|  | G09G 1/02 |
· | Storage circuits (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G09G 1/06-G09G 1/28 take precedence) [3]

|  | G09G 1/04 |
· | Deflection circuits [3]

|  | G09G 1/06 |
· | using single beam tubes (Fulltext... Hierarchy... Expanded...G09G 1/26, Fulltext... Hierarchy... Expanded...G09G 1/28 take precedence) [3]

|  | G09G 1/08 |
· · | 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]

|  | G09G 1/20 |
· | using multi-beam tubes (Fulltext... Hierarchy... Expanded...G09G 1/26, Fulltext... Hierarchy... Expanded...G09G 1/28 take precedence) [3]

|  | G09G 1/22 |
· | using tubes permitting selection of a complete character from a number of characters [3]

|  | G09G 1/24 |
· | using tubes permitting selection of individual elements forming in combination a character [3]

|  | G09G 1/26 |
· | using storage tubes [3]

|  | G09G 1/28 |
· | using colour tubes [3]

|  | G09G 3/00 |
Control arrangements or circuits for visual indicators other than cathode-ray tubes (optomechanical scanning Fulltext... Hierarchy... Expanded...G02B 27/17) [3]

|  | G09G 3/02 |
· | 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]

|  | G09G 3/06 |
· · | using controlled light sources [3]

|  | G09G 3/08 |
· · · | using incandescent filaments [3]

|  | G09G 3/10 |
· · · | using gas tubes [3]

|  | G09G 3/12 |
· · · | using electroluminescent elements (using cathode-ray tubes with phosphor screens Fulltext... Hierarchy... Expanded...G09G 1/00) [3]

|  | G09G 3/14 |
· · · · | semiconductor devices, e.g. diodes [3]

|  | G09G 3/16 |
· · | 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]

|  | G09G 3/36 |
· · · | using liquid crystals [3]