Timing Controller Frame Synchronization Mechanism
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Solution Overview
Problem
Current OLED display panels experience unpredictable frame rate reductions due to delays in image processing and transmission, leading to the 'tearing effect' and noticeable drops in frame rates, which are not effectively managed by conventional image displaying schemes.
Innovation Solution
A timing controller mechanism that introduces a waiting period before processing the next image frame when the previous frame is not ready, generating a sync signal only after the wait time has expired, thereby mitigating the impact of delays and maintaining a stable frame rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the timing controller processes image frames continuously without waiting, then the display updates rapidly, but frame rate instability and tearing effect occur when the application processor is delayed
Solution Approach 1:
The timing controller sends a TE signal in advance to notify the application processor when the display panel is ready to receive the next image frame. This preliminary notification allows the application processor to prepare the image frame data beforehand, reducing delays and ensuring synchronized data transmission, thereby maintaining stable frame rates while preserving rapid update capability.
2Reliability
If the timing controller waits for the application processor to be ready before processing each frame, then frame rate stability improves, but overall processing speed decreases
Solution Approach 1:
The TE signal acts as a feedback mechanism where the timing controller continuously monitors the display panel's readiness state and communicates this status to the application processor. This feedback loop enables the application processor to adjust its data transmission timing dynamically, ensuring that frames are processed at the optimal moment without unnecessary waiting, thus maintaining both stability and speed.
3Productivity
If the application processor transmits image frames as quickly as possible, then productivity increases, but delays in data readiness cause tearing effect and frame rate drops
Solution Approach 1:
The TE signal provides advance notice to the application processor about when the display panel will be ready to receive the next image frame. This allows the application processor to prepare and stage the image frame data in advance, ensuring that data transmission can begin immediately when the display panel is ready, thereby maintaining high transmission rates without synchronization errors or tearing effects.
Data Source
AI summary
The disclosure is directed to a timing controller having a mechanism for frame synchronization, a display panel having the timing controller thereof, and a display system having the timing controller thereof. According to an aspect of the disclosure, the disclosure provides an integrated circuit which includes a timing controller to transmit a first TE signal to an application processor and receive a first image frame from the application processor after the application processor receives the first TE signal, and a control circuit to generate a first sync signal when the timing controller receives the first image frame, wherein when the application processor receives a second TE signal and the application processor is not ready to transmit a second image frame to the timing controller, the control circuit delays a first waiting period to generate a second sync signal.