Method and system for backward compatible, extended dynamic range encoding of video
US9451292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Jun 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In some embodiments, an encoding method for generating an extended dynamic range (EDR) channel in response to an input video channel, such that the EDR channel's code values consist of code values in a range from a standard black level, X, through a standard white level, Z, and an additional code value set. The EDR channel is displayable with standard dynamic range and standard precision by a standard dynamic range video system which maps to the level, X, any of the EDR channel's values less than X, and maps to the level, Z, any of the EDR channel's values greater than Z, and is displayable with an extended dynamic range greater than the standard dynamic range and/or a precision greater than the standard precision by an EDR video system. Other aspects are systems configured to perform embodiments of the encoding method, and methods and systems for displaying EDR video.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.