Projection Display Device Image Correction Time Lag
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Solution Overview
Problem
Projection display devices experience time lags due to extensive calculations required for image distortion correction, leading to user discomfort and reduced usability.
Innovation Solution
A projection display device that temporarily halts the image data obtaining process during correction amount determination, allowing for enhanced processing speed and displaying a previously corrected image until normal projection is resumed, thereby reducing user wait time and improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the correction amount determination process is executed with high priority to reduce processing time, then the image data obtaining process is delayed, but if the image data obtaining process continues in parallel, then the correction amount determination process slows down causing time lag
Solution Approach 1:
The patent applies preliminary action by temporarily halting the image data obtaining process before executing the correction amount determination process. This ensures that computational resources are fully allocated to the correction calculation, reducing processing time. After correction completion, the image obtaining process resumes to maintain overall system productivity.
2Speed
If the image data obtaining process is halted during correction determination, then processing speed is enhanced, but the continuity of image display is interrupted
Solution Approach 1:
The patent implements periodic action by temporarily suspending the image data obtaining process during correction determination and then resuming it afterward. This periodic interruption allows high-speed correction processing while maintaining overall display continuity through proper timing and buffer management.
Data Source
AI summary
A projection display device adapted to display a projection image based on external image data input externally, includes: a projection section; an image data storage section adapted to store projection image data; an image control section adapted to execute an image data obtaining process; an image capturing section adapted to capture a projection area including the projection surface to generate a captured image; and a correction amount determination section adapted to execute a correction amount determination process for determining a correction amount, wherein the image control section halts the image data obtaining process during a period in which the correction amount determination section is executing the correction amount determination process, and after the correction amount determination process is terminated, makes the projection section display a temporary projection image obtained by correcting an image data previously stored in the image data storage section, and resumes the image data obtaining process.