RAM Error Correction for AMOLED Display Stability
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Solution Overview
Problem
Existing RAM detection technologies fail to thoroughly detect failures in RAM storage units, leading to errors in data transmission and potential local discoloration of display screens due to instability or incorrect turn-on voltage in transistors within Active-Matrix Organic Light-Emitting Diode (AMOLED) drive circuits.
Innovation Solution
A data transmission method that involves receiving and storing image data with encrypted verification data and original data, comparing the two, and replacing the original data with the verification data if inconsistencies are found, ensuring accurate data transmission and storage by using a data transmission device with a storage unit and correction units to verify and correct image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If common Built-In Self-Test (BIST) or Cyclic Redundancy Check (CRC) is used for RAM detection, then the detection process is simple and fast, but some failures in the RAM may not be thoroughly detected
Solution Approach 1:
The patent segments the data transmission process into multiple verification stages: initial data writing with verification, periodic refresh operations with verification, and error correction cycles. Each stage independently verifies data integrity using segmentation of the verification process, allowing thorough detection without requiring a single complex detection system.
Solution Approach 2:
The patent performs preliminary verification actions by writing verification data to RAM before normal operation, and by performing verification during refresh operations before data is used. This preliminary action ensures that potential failures are detected early, improving detection thoroughness without adding complexity to the core operational path.
2Reliability
If verification and correction operations are performed continuously, then data transmission accuracy is improved, but processing time and system complexity increase
Solution Approach 1:
The patent implements periodic verification and correction operations by utilizing RAM refresh cycles as opportunities to perform verification. Instead of continuous verification, the system periodically checks data integrity during mandatory refresh operations, maintaining high accuracy while minimizing time loss by aligning verification with existing operational cycles.
Solution Approach 2:
The patent maintains continuity of useful action by performing verification and correction operations during RAM refresh cycles, which are mandatory operations that must occur anyway. This approach ensures data accuracy improvement without adding separate time-consuming verification steps, as the verification is embedded within the continuous refresh operation.
Data Source
AI summary
A data transmission method comprises: receiving and storing image data, wherein the image data comprises first data and second data, the first data is encrypted verification data, and the second data is original data; comparing the first data with the second data in stored image data; replacing the second data with the first data, if the second data and the first data are inconsistent.