Curved Display Control IC with Coordinate Lookup Table
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing curved displays used in vehicles face challenges in reducing image distortion when displaying image data originally intended for flat surfaces, leading to increased arithmetic processing demands and higher power consumption and manufacturing costs due to the need for correction circuits.
Innovation Solution
A display system comprising a control IC with a frame memory, arithmetic circuit, and memory circuit that converts first image data for a flat surface into second image data suitable for a curved surface, using a product-sum operation circuit and analog circuits to minimize distortion and maintain low power consumption and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image data for flat display is directly displayed on curved display, then device complexity is reduced, but image distortion occurs
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correspondence relationships between flat display coordinates and curved display coordinates in a lookup table before actual image display. This allows the system to quickly retrieve and apply coordinate transformations without real-time complex calculations, thereby maintaining image accuracy while keeping the display system simple.
2Manufacturing precision
If correction circuit is provided for each display to convert image data, then image distortion is reduced, but power consumption increases
Solution Approach 1:
The patent uses copying by creating a lookup table that stores pre-calculated correspondence relationships between flat and curved display coordinates. Instead of performing complex arithmetic operations for each pixel conversion, the system copies and retrieves pre-computed transformation data from the lookup table, significantly reducing power consumption while maintaining accurate image display on curved surfaces.
3Manufacturing precision
If correction circuit is provided for each display to convert image data, then image distortion is reduced, but manufacturing cost increases
Solution Approach 1:
The patent applies universality by implementing a single lookup table that can serve multiple curved displays with different curvature radii. The system stores correspondence relationships for various curvature types in one unified structure, allowing the same hardware component to support multiple display configurations without requiring separate correction circuits for each display, thereby reducing manufacturing costs.
4Manufacturing precision
If enormous amount of arithmetic processing is performed in host controller, then image data is converted accurately, but processing time exceeds fixed period
Solution Approach 1:
The patent resolves the time constraint by performing the complex arithmetic processing in advance and storing the results in a lookup table. During actual operation, the system only needs to retrieve pre-computed coordinate transformations, which occurs within the fixed period required for display refresh, thus maintaining both accuracy and meeting timing requirements.
Data Source
AI summary
An object is to provide a display system with a novel structure and a vehicle. The display system includes a display and a control IC. The control IC includes a frame memory, an arithmetic circuit, and a memory circuit. The display has a curved display surface. The frame memory has a function of holding first image data dedicated to displaying an image on a flat surface. The memory circuit has a function of storing shape data on the display. The arithmetic circuit has a function of converting first coordinates of the curved display surface into second coordinates of the flat surface included in the first image data, by performing arithmetic operation in accordance with the shape data. The arithmetic circuit has a function of outputting the first image data stored in the frame memory to the display as second image data on the basis of the second coordinates.