Display Correction Factor Compression for AP-Based De-Mura
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing de-mura solutions integrated into display driver integrated circuits (DDICs) increase the bill of materials (BOM) cost and power consumption, leading to reduced performance in display devices.
Innovation Solution
Implementing application processor (AP)-based de-mura architectures that calculate and store correction factors in system memory, utilizing sub-pixel rendering (SPR) data to reduce BOM cost and power consumption, and employing higher compression ratios for display stream compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If de-mura solutions are integrated into display driver integrated circuits (DDICs), then display uniformity is improved, but bill of materials cost and power consumption increase
Solution Approach 1:
The patent extracts the de-mura correction functionality from the display driver integrated circuit (DDIC) and relocates it to the application processor (AP). This separation allows the DDIC to operate with reduced complexity and power consumption, while the AP handles the correction calculations using its existing processing resources and system memory.
Solution Approach 2:
The patent leverages the application processor's existing multi-functional capabilities to perform de-mura corrections. The AP, already designed for general-purpose computing and graphics processing, is utilized to execute de-mura algorithms, thereby avoiding the need for dedicated de-mura hardware and reducing overall system power consumption.
2Manufacturing precision
If de-mura solutions are integrated into display driver integrated circuits (DDICs), then display uniformity is improved, but bill of materials cost increases
Solution Approach 1:
The patent extracts the de-mura correction functionality from the display driver integrated circuit (DDIC) and relocates it to the application processor (AP). This separation allows the DDIC to operate with reduced complexity and power consumption, while the AP handles the correction calculations using its existing processing resources and system memory.
Solution Approach 2:
The patent merges the de-mura correction functionality with the application processor's existing graphics processing and display control capabilities. By combining these functions in the AP, the system eliminates the need for separate dedicated de-mura hardware components, thereby reducing the bill of materials cost while maintaining correction effectiveness.
3Productivity
If higher compression ratios are employed for display stream compression, then display bandwidth is optimized, but correction data accuracy may be compromised
Solution Approach 1:
The patent performs preliminary calculation and compression of de-mura correction factors before they are applied to display frames. By pre-processing the correction data and storing compressed correction factors in system memory, the system reduces the bandwidth required for transmitting correction data while maintaining sufficient accuracy for effective display uniformity correction.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to methods and apparatus for display processing. In some aspects, the apparatus can measure at least one panel including one or more panel measurements. The apparatus can also determine at least one correction factor for each of the one or more panel measurements. Further, the apparatus can adjust the at least one correction factor based on each of the one or more panel measurements. In some aspects, the apparatus can compress the at least one correction factor based on each of the one or more panel measurements. Moreover, the apparatus can store the compressed at least one correction factor. In some aspects, the apparatus can decode correction data for at least one frame based on the adjusted at least one correction factor. The apparatus can also store or communicate the decoded correction data for the at least one frame.