Targeted display color volume specification via color remapping information (CRI) messaging
US10382735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Oct 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Given existing color remapping information (CRI) messaging variables, methods are described to communicate color volume information for a targeted display to a downstream receiver. Bits 7:0 of the 32-bit colour_remap_id are used to extract a first value. If the first value is not a reserved value, then the first value is used as an index to a look-up table to generate a first luminance value for a targeted display, otherwise a second value is generated based on bits 31:9 in the colour_remap_id messaging variable and the first luminance value for a targeted display is generated based on the second value. The methods may be applied to communicate via CRI messaging a minimum luminance value, a maximum luminance value, and color primaries information of the targeted display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.