Flat Panel Television Area-Based Tone Curve Correction
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Solution Overview
Problem
Conventional flat panel televisions cannot perform different correction processes for various areas of a screen, limiting user customization such as making one area brighter and another darker, despite being able to correct interchannel differences in luminance.
Innovation Solution
A flat panel television system that generates image data with gradation information for each pixel and uses multiple correction tables to adjust image data based on the area of the screen, allowing for selective tone curve corrections across different screen regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If correction processing is performed individually for each split screen, then interchannel differences in luminance can be suppressed, but different correction processings cannot be performed for plural areas of a screen
Solution Approach 1:
The screen is divided into multiple correction areas, and separate correction tables are created for each area. This allows different correction processes to be applied to different regions of the screen simultaneously, resolving the contradiction between uniform correction and area-specific customization.
Solution Approach 2:
Different correction characteristics are applied to different areas of the screen based on user requirements. For example, side areas can be made brighter while the center remains darker, enabling localized optimization of image quality for specific viewing preferences.
2Device complexity
If a single correction table is used for the entire screen, then device complexity is reduced, but user customization for different screen areas is limited
Solution Approach 1:
The correction system is segmented into multiple area-specific correction tables, each storing correction data for a specific screen region. This segmentation enables user customization without requiring a completely complex system redesign, as each area can be independently configured.
Solution Approach 2:
Correction tables are pre-configured for different screen areas with various correction characteristics. Users can select from these pre-prepared correction profiles for each area, which simplifies the operation interface while still providing extensive customization options.
Data Source
AI summary
According to the invention, performing torn curb correction processing by referring to plural correction tables 113a to 113c for plural display areas A, B, C, D, E, and P makes it possible to obtain an output image meeting user's requirements. Particularly, since tone curve correction processing can be performed by referring to different correction tables selected from the correction tables 113a to 113c for a main screen to be displayed in the display areas A, B, C, D, and E and for a subscreen to be displayed in a sub-display area P, discomfort to a viewer attributable to a difference in brightness between the main screen and the subscreen can be prevented.