Stereoscopic Display Vertical Blank Control
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Solution Overview
Problem
Conventional stereoscopic image display devices fail to accurately control the length of vertical blanks in left and right image frames, leading to luminance differences and potential flicker issues when the vertical blank length varies for each stereoscopic image frame.
Innovation Solution
A method and device that divide a stereoscopic image frame into a first and second image frame based on the end point of the active period, ensuring equal or predetermined ratios for the lengths of the vertical blanks, thereby synchronizing the output of these frames to maintain consistent luminance and prevent flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional stereoscopic image display devices divide a stereoscopic image frame into left and right image frames without controlling vertical blank lengths, then the division process is simple, but luminance differences occur between the left and right image frames
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the vertical blank length parameter in the image frame structure. The display device modifies the vertical blank duration for left and right image frames based on detected frame timing information, ensuring that both eyes receive equal luminance by equalizing the vertical blank lengths despite variations in stereoscopic image frame timing.
2Adaptability or versatility
If the vertical blank length varies for each stereoscopic image frame, then the stereoscopic image can adapt to different content requirements, but luminance differences and flicker issues occur when divided into left and right image frames
Solution Approach 1:
The patent implements dynamics by making the vertical blank length adaptive and variable rather than fixed. The display device detects the actual timing of stereoscopic image frames and dynamically adjusts the vertical blank duration for each frame based on its specific timing characteristics, allowing the system to adapt to varying content requirements while maintaining luminance stability through real-time parameter adjustment.
Solution Approach 2:
The patent employs feedback mechanisms by detecting the actual timing information of incoming stereoscopic image frames and using this information to adjust the vertical blank length accordingly. The display device continuously monitors frame arrival times and modifies the vertical blank duration in response to detected timing variations, creating a closed-loop control system that prevents luminance differences and flicker.
3Device complexity
If conventional devices do not control vertical blank lengths in converted image frames, then the device complexity is low, but image quality deteriorates due to luminance differences
Solution Approach 1:
The patent applies self-service by enabling the display device to automatically detect and correct its own timing issues without external intervention. The device monitors its own frame timing, identifies vertical blank length discrepancies, and autonomously adjusts the timing parameters to equalize luminance between left and right image frames, eliminating the need for complex external control mechanisms.
Data Source
AI summary
A method of displaying stereoscopic images is provided. By the method, a stereoscopic image frame having an active period and a vertical blank is received, a length of the vertical blank varying for each stereoscopic image frame, the stereoscopic image frame is divided into a first image frame and a second image frame based on an end point of the active period of the stereoscopic image frame, and the first image frame and the second image frame are sequentially outputted.