Stereoscopic Display Crosstalk Reduction via Image Correction
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Solution Overview
Problem
Liquid crystal display (LCD) apparatuses face significant crosstalk issues when displaying stereoscopic images due to differences in gradation and timing of left-eye and right-eye images, leading to decreased display quality.
Innovation Solution
A method and apparatus that generate and display multiple images for each eye, with correction using previous images, and strategically insert black images to manage liquid crystal response times, altering the light source duty ratio for enhanced luminance efficiency and crosstalk prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If left-eye image and right-eye image are alternately displayed on LCD panel using progressive scan method, then stereoscopic image display is achieved, but crosstalk is greatly generated due to gradation difference and simultaneous display interval
Solution Approach 1:
The patent divides the display process into multiple segments by generating k images for each eye instead of displaying single images. This segmentation allows for better control of liquid crystal response timing and reduces the overlap interval where crosstalk occurs, as each segmented image can be corrected using previous frame data.
Solution Approach 2:
The patent applies preliminary correction to image data before display by using previously received images to correct currently received images. This preliminary action compensates for liquid crystal response delays and prevents crosstalk before it occurs, rather than attempting to fix it after display.
2Reliability
If multiple images are generated and corrected using previous images, then crosstalk is reduced and display quality is enhanced, but device complexity increases
Solution Approach 1:
The system performs self-correction by using its own previously displayed images to correct currently received images. The display apparatus uses its internal historical data to automatically compensate for timing issues, eliminating the need for external correction mechanisms or additional hardware components.
3Use of energy by moving object
If light source is continuously provided to display panel, then luminance efficiency is maintained, but crosstalk occurs during interval when left-eye and right-eye images are combined
Solution Approach 1:
The patent implements periodic control of the light source, turning it on and off in synchronization with the display of different eye images. The light source provides light during intervals when only one eye's image is displayed and turns off during intervals when both images are combined, creating a periodic pattern that prevents crosstalk while maintaining overall luminance efficiency.
Data Source
AI summary
A method for displaying a stereoscopic image, the method comprises generating k images for a left eye and k images for a right eye based on a left-eye image and a right-eye image, where ‘k’ is a natural number greater than two, correcting an image currently received using an n-th image of the k images for the left eye and the k images for the right eye that are previously received, where ‘n’ is a natural number greater than ‘k’, displaying corrected k images for the left eye and corrected k images for the right eye on a display panel, and providing the display panel with lights based on the image displayed on the display panel.