Video Data Processing for Display Adaptive Playback
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Solution Overview
Problem
Current technologies fail to optimally display ultra-high definition (UHD) video content across various display devices due to limitations in adapting to the physical properties of each device, leading to restricted color and brightness, especially when content is supplied via external devices.
Innovation Solution
A video data processing method and device that receives and transmits signaling information, including electro optical transfer function (EOTF) type information, maximum and minimum brightness, and chromaticity coordinates, to adapt video playback to the capabilities of the display device, ensuring optimal viewing experiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UHD content is supplied via external device, then content delivery is simplified, but display device properties cannot be delivered and color/brightness optimization is restricted
Solution Approach 1:
The transmitting device performs preliminary analysis of display device properties (color gamut, brightness range, EOTF characteristics) before content delivery, and pre-processes the UHD content with appropriate color space transformation and tone mapping curves to match the target display capabilities, ensuring optimal display without requiring complex real-time adjustments
Solution Approach 2:
The system introduces an intermediary processing stage between the external content source and the display device, where the transmitting device acts as a mediator to transform content from its original color space to the display device's native color space, and applies appropriate tone mapping to bridge the dynamic range gap, thus enabling optimal display despite the external source limitation
2Manufacturing precision
If content transformation is performed based on accurate display device analysis, then color and brightness optimization is improved, but device complexity increases
Solution Approach 1:
The system changes key parameters such as color space (from BT.2020 to display-specific gamut), brightness range (from 10000 nits to display capability), and transfer function (from SMPTE ST 2084 to display-specific EOTF) to match the target display device, achieving optimization through parameter transformation rather than complex algorithmic processing
Solution Approach 2:
The transmitting device creates a simplified representation or model of the display device's color and brightness characteristics, and uses this model to guide the content transformation process, copying only the essential display properties needed for optimization rather than analyzing all device parameters
Data Source
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AI summary
A video data processing method and/device for display adaptive video playback are disclosed. The video data processing method includes receiving video data and signaling information including dynamic range related information of the video data from a source device via an interface, and playing the received video data back. The signaling information includes electro optical transfer function, EOTF, type information for identifying an EOTF used for the video data.