Disc controller with color look-up table
US6072499A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1996 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Apr 5, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data processing system comprises a magnetic or optical disc 1, a disc controller 2, and a main data processing unit 5 communicating with the controller by means on an interface 6. The controller 2 comprises an internal processing unit which receives requests from the main data processing unit 5 for data to be read from the disc 1, and controls retrieval of the data from the disc 1 and transmission of data to the main data processing unit 5 via the interface 6. The controller 2 further comprises a buffer 3 for data read from the disc 1 prior to transmission to the main data processing unit 5. The controller 2 also comprises a look-up table 4 for modifying the data read from the disc 1 in accordance with predetermined. modification criteria prior to transmission to the main data processing unit 5. The system may be used in colour processing of image data, with the disc controller providing primary colour correction. There is also disclosed a method of handling image data in which a data structure in the form of a colour cube is preloaded by a colour processor with the cardinal vertices for interpolation to take place. The colour cube may be loaded with data corresponding to a relat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.