Timing Controller Compresses Image Signals for Abnormal Source Drivers
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Solution Overview
Problem
As the size of display panels increases, existing display devices fail to maintain operation when at least one source driving circuit is in an abnormal state, leading to incomplete image display and potential loss of critical information during disasters.
Innovation Solution
A display device with a timing controller that determines the operation state of source driving circuits, compresses image signals for abnormal states, and transmits compressed data to functioning circuits, ensuring partial image display and prioritizing the delivery of important information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the timing controller stops operation when sensing abnormal state in source driving circuits, then system stability is improved, but image display continuity deteriorates
Solution Approach 1:
The timing controller performs partial image signal transmission by sending compressed image data only to the normal source driving circuits while excluding abnormal ones. This allows the system to maintain operation with reduced functionality rather than stopping completely, achieving partial action that balances reliability and continuity.
Solution Approach 2:
The timing controller changes the parameter of image signal compression ratio adaptively. When abnormal source driving circuits are detected, the controller compresses the image signal more aggressively to reduce data volume and transmission time, enabling faster reconfiguration to normal circuits only. This parameter change allows the system to maintain continuity under degraded conditions.
2Manufacturing precision
If the timing controller transmits full image signals to all source driving circuits, then image quality is improved, but transmission time increases
Solution Approach 1:
The timing controller dynamically adjusts the image signal compression parameter based on the operational status of source driving circuits. When all circuits are normal, full-quality images are transmitted. When abnormal circuits are detected, the controller increases compression ratio to reduce transmission time, accepting some quality reduction to maintain timely operation.
Solution Approach 2:
The system transmits only the necessary portion of image data to normal source driving circuits by compressing the image signal. This partial transmission approach reduces the total data volume sent across the system, decreasing transmission time while still providing adequate image quality for operational continuity.
3Speed
If image signals are compressed to reduce transmission time, then transmission speed is improved, but image quality deteriorates
Solution Approach 1:
The timing controller adaptively changes the compression parameter based on system conditions. During normal operation, lower compression is applied to maintain quality. During abnormal conditions when speed is critical, higher compression is applied to maximize transmission speed, accepting quality degradation as necessary for timely operation.
Data Source
AI summary
A display device includes a display panel including a plurality of pixels, a timing controller which receives an image signal and a control signal and outputs transmission data, and a plurality of source driving circuits, each providing a data signal to a corresponding pixel among the plurality of pixels in response to the transmission data. Each of the source driving circuits applies a state information signal corresponding to an operation state to the timing controller, and the timing controller determines the operation state of the source driving circuits based on the state information signal, compresses the image signal when a source driving circuit of the source driving circuits is in an abnormal state to generate the transmission data, and applies the transmission data to a source driving circuit of the source driving circuits in a normal state.