Adaptive HDMI Formatting for 3D Video Interoperability
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Solution Overview
Problem
Existing HDMI standards do not ensure interoperability between source and display devices for 3D video formatting, as manufacturers rely on prior knowledge of display device requirements, leading to potential format incompatibility in environments where these requirements are unknown.
Innovation Solution
An adaptive HDMI formatting system that retrieves and uses formatting requirements from a display device via an EDID-based formatting table, allowing the source device to dynamically adjust 3D video formatting to match the display device's capabilities without prior knowledge, supporting various 3D modes like over-under, side-by-side, and checkerboard formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manufacturers use private or a priori knowledge of display device formatting requirements, then interoperability between source and display devices is achieved, but the system becomes vulnerable to format incompatibility when display device requirements are unknown or vary across different devices
Solution Approach 1:
The source device performs preliminary actions by retrieving EDID information from the display device before video transmission begins. This EDID data is used to pre-determine the appropriate 3D video formatting mode (over-under, side-by-side, checkerboard, etc.) so that the source device is already configured correctly when video content needs to be transmitted, eliminating the need for trial-and-error or manual configuration.
Solution Approach 2:
The system implements feedback by using the EDID information returned from the display device to automatically configure the source device's video formatting. The EDID acts as a feedback mechanism that communicates the display device's capabilities and requirements back to the source device, enabling automatic adaptation without requiring prior knowledge or manual intervention.
2Adaptability or versatility
If multiple video formatting modes are supported to accommodate different display devices, then versatility is improved, but device complexity increases due to the need to handle various formats like over-under, side-by-side, and checkerboard
Solution Approach 1:
The source device achieves universality by using a single EDID retrieval and processing mechanism to automatically determine and configure the appropriate 3D video formatting mode. Instead of requiring separate configuration mechanisms for each format type (over-under, side-by-side, checkerboard), the system uses one universal approach that works across all display devices by querying their EDID information.
Solution Approach 2:
The system implements self-service by having the source device automatically retrieve and interpret EDID information from the display device to self-configure the video formatting. This eliminates the need for manual configuration or complex user input, as the system serves itself by automatically adapting to the display device's requirements based on the EDID data.
Data Source
AI summary
A system configured to support video formatting without a priori knowledge of video formatting requirements of a display device. The system relies on video information transmitted from the display device to a source device to facilitate determining the video formatting requirements of the display device. The system can be used within any television network, gaming network, and content sourcing network where it may be advantageous to deploy a source device that can support formatting requirements for a plurality of different display types.