Field Sequential Display Data Generation Circuit Size Reduction
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Solution Overview
Problem
Field sequential type liquid crystal display devices that control backlight brightness for each area face challenges in reducing circuit size due to high computation requirements for generating display and backlight data, particularly with existing frame interpolation processing methods.
Innovation Solution
The implementation of a field sequential data generation unit that includes a motion vector detection unit, a backlight data generation unit, and an interpolation frame generation unit, which generates display data by performing motion compensation and frame interpolation processing, while dividing the backlight into areas to reduce computation and circuit size, and uses weighted-averaging or motion compensation to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frame interpolation processing with motion compensation is performed for each pixel to generate display data, then image quality is improved, but circuit size increases due to large computation requirements
Solution Approach 1:
The backlight is divided into a plurality of areas, and backlight data is generated for each area rather than for each pixel. This segmentation reduces the total number of data points that require computation and storage, thereby reducing circuit size while maintaining image quality through area-based lighting control
Solution Approach 2:
The patent extracts and separates the backlight control function from the pixel-level display data generation. By generating backlight data independently for each area and combining it with display data, the system reduces the computational burden on the main processing circuit while maintaining motion compensation capabilities
2Measurement precision
If backlight brightness is controlled for each area to suppress color breakup, then display quality is improved, but computation requirements increase
Solution Approach 1:
The display screen is divided into areas corresponding to backlight control regions, and motion compensation is applied at the area level rather than pixel level. This reduces computation load while maintaining the ability to suppress color breakup through localized backlight control
Solution Approach 2:
The patent applies motion compensation and brightness control only to the backlight areas that require adjustment for color breakup suppression, rather than processing all pixels uniformly. This partial action approach reduces overall computation while maintaining display quality where needed
Data Source
AI summary
The purpose of the present invention is to reduce the size of a circuit that generates display data and backlight data in each field. A field sequential data generation unit (10) is characterized by including a motion vector detection unit (11) for detecting motion vectors (MV) of input image data (D1), a backlight data generation unit (12) for generating backlight data (D2) based on the input image data, an image data calculation unit (13) for generating pre-interpolation display data (D3) based on image data (De) equivalent to the input image data and the backlight data, and an interpolation frame generation unit (14) for generating display data (D4) by performing frame interpolation processing which includes motion compensation using the motion vectors, on the pre-interpolation display data. By using such a configuration, the backlight data is generated based on the input image data having not been subjected to the frame interpolation processing, and the size of the circuit is reduced.