Timing Controller Frame-Frequency Switching for Stable Luminance
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Solution Overview
Problem
Existing display apparatuses suffer from issues such as flickering due to changes in frame frequency, which affect display quality.
Innovation Solution
A control method for a timing controller that generates a luminance control signal and modified display frames based on initial display frames, where the luminance control signal is a pulse signal with control segments corresponding to the modified frames, to improve display effect by adjusting frame frequency and pulse characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frame frequency is changed to adapt to different display content, then display adaptability is improved, but display stability deteriorates causing flickering
Solution Approach 1:
The timing controller pre-calculates and prepares multiple frame frequencies before actual display operation. By having frame frequencies ready in advance based on different display scenarios, the system can switch between them without causing display instability or flickering, thus resolving the contradiction between adaptability and stability.
2Adaptability or versatility
If frame frequency is adjusted dynamically, then display flexibility is improved, but luminance consistency deteriorates
Solution Approach 1:
When frame frequency needs to be adjusted for different display content, the timing controller simultaneously adjusts the duty cycle of the backlight control signal to compensate for luminance changes. This coordinated parameter adjustment ensures that luminance remains consistent even when frame frequency changes, resolving the contradiction between flexibility and luminance consistency.
3Productivity
If frame frequency varies to optimize performance, then display performance is improved, but visual quality deteriorates due to flickering
Solution Approach 1:
The timing controller monitors the actual display output and adjusts the backlight duty cycle in real-time based on frame frequency changes. This feedback mechanism ensures that when frame frequency varies to optimize performance, the backlight illumination is simultaneously adjusted to eliminate flickering, thus resolving the contradiction between performance and visual quality.
Data Source
AI summary
The present disclosure provides a display apparatus, a timing controller and a control method thereof. The control method of the timing controller includes: receiving and storing a video stream, where the video stream includes n initial display frames arranged in sequence, n is greater than or equal to 2, and a frame frequency of each initial display frame sequentially increases or decreases from a first initial display frame to an n-th initial display frame; generating a luminance control signal and n modified display frames according to the n initial display frames, where the n modified display frames respectively correspond to the n initial display frames; the luminance control signal is a pulse signal and includes n control segments, and the n control segments respectively correspond to the n modified display frames; and sending the luminance control signal and the n modified display frames to a display panel, so that the display panel displays according to the modified display frames. The present disclosure can improve display effect.