Display Device EDID Mapping for High-Resolution Compatibility
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Solution Overview
Problem
Existing display devices face compatibility issues due to differences in performance information formats between DisplayID and EDID, leading to source devices being unable to accurately read high-resolution information from display devices.
Innovation Solution
The display device stores both DisplayID and EDID together, mapping specific EDID information onto DisplayID, allowing source devices to read high-resolution information by using predefined mapping information to identify and extract EDID data from the DisplayID structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display device stores only DisplayID format performance information, then the display device can provide high-resolution information (Ultra HD and beyond), but source devices with EDID compatibility cannot accurately read the performance information
Solution Approach 1:
The patent embeds EDID performance information within the DisplayID data structure. The controller stores both DisplayID and EDID formats in the same memory space, with EDID information nested within specific byte ranges of the DisplayID structure (bytes 128-255). When a source device requests performance information, the controller automatically provides the appropriate format, allowing EDID-compatible devices to read nested EDID data while maintaining DisplayID's high-resolution capabilities.
Solution Approach 2:
The display device's performance information storage system is designed to serve multiple functions simultaneously. The same memory space and data structure accommodate both DisplayID (for high-resolution Ultra HD and beyond) and EDID (for traditional HD devices). This multi-functional approach allows a single display device to work with various source devices regardless of their specific compatibility requirements, eliminating the need for separate storage systems.
2Adaptability or versatility
If the display device provides both DisplayID and EDID performance information, then compatibility with different source devices is improved, but the data structure complexity increases
Solution Approach 1:
The patent merges DisplayID and EDID data structures into a unified format. Instead of maintaining separate storage systems, the controller combines both formats into a single performance information block where EDID data occupies bytes 128-255 of the DisplayID structure. This merging reduces overall system complexity by eliminating redundant storage mechanisms while maintaining both formats' functionality through a single integrated data structure.
3Manufacturing precision
If source devices can read high-resolution performance information from display devices, then content delivery quality is improved, but the reading accuracy fails due to format incompatibility
Solution Approach 1:
The controller acts as an intermediary between the performance information storage and source devices. It automatically detects the source device's compatibility type and provides the appropriate format (DisplayID or EDID) without requiring the source device to perform complex format conversion. This intermediary function ensures accurate reading of high-resolution performance information by EDID-compatible devices while maintaining the original DisplayID data integrity for high-resolution content delivery.
Data Source
AI summary
A display device includes a receiver configured to receive a first request signal requesting first performance information, as performance information of the display device, from the outside, a memory configured to store second performance information which contains a first data block containing first data as a header consisting of a fixed pattern indicating that it is first performance information and a second data block containing second data as block tags for identifying data blocks, and a controller configured to output data having a predetermined size from the first data, as the first performance information, to the receiver, based on the first request signal, such that the receiver outputs the first performance information to the outside.