Method and apparatus for representing three-dimensional color data in a one-dimensional reference system
US5181014A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1989 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for representing and displaying the true (actual) color of an image in an index color system. The user specifies the number of color levels necessary to represent the range of displayable colors, and specifies the color (the red, green, blue primary color values) desired for an image. From the specified number, the apparatus calculates RGB (red, green, blue) color values, and stores them in memory in a manner suitable for referencing by an index type address. From the specified color, the apparatus calculates an index suitable for referencing the desired RGB color values from the stored color values. The apparatus comprises a keyboard and a port to a host computer for inputting index color data and true color data, a processing means coupled to the keyboard and/or host computer for producing index-type data from true color data, a memory means for storing the input data and data produced by the processing means, and a display means for displaying stored data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.