Interface Apparatus for Automatic EDID Correction
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Solution Overview
Problem
The existing methods for storing and maintaining Extended Display Identification Data (EDID) in display systems, such as projectors and monitors, are labor-intensive and prone to errors, requiring manual inspection and rewriting, especially during mass production and when EDID is damaged.
Innovation Solution
An interface apparatus with a built-in burning circuit that automatically detects the correctness and integrity of EDID during system initialization and performs a refresh writing operation if necessary, using a data processing unit, memory unit, and switching unit to store and rewrite EDID in an EEPROM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual burning method is used to write EDID to EEPROM, then production flexibility is maintained, but labor hours and production time increase significantly
Solution Approach 1:
The patent pre-stores multiple EDID content templates in the system's memory before production. During manufacturing, the system automatically selects and writes the appropriate pre-prepared EDID template to the EEPROM based on the display device type, eliminating the need for manual EDID creation and burning operations. This preliminary preparation of EDID contents significantly accelerates the production process while maintaining operational simplicity.
2Manufacturing precision
If individual external burning is performed for each EDID, then writing accuracy is controlled, but considerable labor hours are required
Solution Approach 1:
The patent implements an automatic EDID writing system where the display device itself performs the EDID burning operation internally without requiring external burning equipment. The system automatically detects the display device type, selects the corresponding EDID template, and writes it to the EEPROM autonomously. This self-service mechanism eliminates manual intervention and external equipment while maintaining writing accuracy, dramatically reducing the time required for EDID burning during production.
3Ease of repair
If no built-in writing function is provided, then device complexity is reduced, but maintenance becomes cumbersome when EDID is destroyed
Solution Approach 1:
The system pre-stores multiple EDID content templates in its memory before any damage occurs. When EDID data in the EEPROM becomes corrupted or destroyed, the system can automatically detect the error, retrieve the appropriate EDID template from its internal storage, and rewrite the correct data to the EEPROM without requiring external equipment. This preliminary preparation of backup EDID templates enables autonomous maintenance operations, significantly simplifying repair processes despite adding some system complexity.
4Manufacturing precision
If manual inspection and rewriting process is used for damaged EDID, then writing precision is maintained, but maintenance time and complexity increase
Solution Approach 1:
The patent incorporates an automatic error detection and correction mechanism that continuously monitors the integrity of EDID data in the EEPROM. When damage or corruption is detected, the system automatically retrieves the correct EDID template from its internal storage and rewrites the damaged data without requiring manual inspection. This feedback-based automatic correction system maintains EDID data accuracy while eliminating the time-consuming manual inspection and rewriting processes that would otherwise be required during maintenance.
Data Source
AI summary
An interface apparatus and a method of writing an extended display identification data (EDID) are provided. The interface apparatus includes a data processing unit, a memory unit and a switching unit. The memory unit is coupled to a connector corresponding to the memory unit and the data processing unit via the switching unit. When the interface apparatus is being initialized, the data processing unit detects whether or not the EDID stored in the memory unit is correct. If the EDID stored in the memory unit is incorrect, the data processing unit rewrites the EDID to the memory unit.