Luminance Compensator for Multi-Frame Rate Displays
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Solution Overview
Problem
Display systems operating with multiple frame rates experience luminance deviations due to defects in process and design, particularly when different regions of a display panel are independently driven with varying frame rates, leading to inefficient luminance compensation and increased memory resource consumption.
Innovation Solution
A luminance compensator system that includes a memory device and a luminance compensation circuit, which generates optimized luminance compensation data by storing and processing first and second luminance compensation data in response to a frame rate dimming-on signal, allowing for efficient luminance adjustment across multiple frame rates and regions within a display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If luminance compensation data is stored for multiple frame rates in memory, then luminance compensation accuracy is improved, but memory resource consumption increases
Solution Approach 1:
The luminance compensation data is segmented by frame rate, with separate data sets stored for different frame rates (e.g., 60Hz, 120Hz, 240Hz). The memory device stores multiple groups of luminance compensation data corresponding to different frame rates, and the luminance compensation circuit selectively retrieves and processes only the data relevant to the current frame rate, thereby improving accuracy while managing memory resources efficiently.
Solution Approach 2:
The system dynamically switches between different luminance compensation data sets based on the current frame rate. The luminance compensation circuit receives frame rate information and automatically selects the appropriate compensation data group, enabling adaptive luminance compensation that matches the current operating conditions without requiring all data to be simultaneously active in memory.
2Adaptability or versatility
If frame rate changes are implemented in display panel, then display system versatility is improved, but luminance deviation increases
Solution Approach 1:
Luminance compensation data for multiple frame rates is pre-calculated and stored in the memory device before operation. When the display panel operates at different frame rates, the system retrieves the pre-prepared compensation data corresponding to the current frame rate, eliminating the need for real-time calculation and ensuring immediate correction of luminance deviations upon frame rate changes.
Solution Approach 2:
The luminance compensation circuit receives feedback regarding the current frame rate from the display panel control system and automatically adjusts the luminance compensation parameters based on the retrieved compensation data. This closed-loop approach ensures that luminance deviations are continuously corrected in response to frame rate changes, maintaining display quality across different operating conditions.
Data Source
AI summary
A luminance compensator includes a memory device and a luminance compensation circuit. The memory device stores a plurality of luminance compensation data and provides first luminance compensation data and second luminance compensation data among the plurality of luminance compensation data in response to a frame rate dimming-on signal. The first luminance compensation data corresponds to a first frame rate. The second luminance compensation data corresponds to a second frame rate. The plurality of luminance compensation data is for compensating luminance of at least one region that operates with a plurality of frame rates. The frame rate dimming-on signal represents time intervals in which frame rates of the at least one region are gradually changed. The luminance compensation circuit generates third luminance compensation data in response to the frame rate dimming-on signal, the first luminance compensation data, and the second luminance compensation data.