Laser TV Image Segmentation for Ultra HD Display
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Solution Overview
Problem
Current laser TV technologies, particularly those using DLP, are limited to Full High Definition (FHD) resolution and cannot satisfy the requirements for ultra high definition displays due to the limitations of existing DMD driving chips.
Innovation Solution
An image processing method that segments each frame of ultra high definition image into two frames, which are then processed and displayed using two DMD driving chips in a time-sharing and diagonal staggered manner, leveraging the principle of visual persistence to combine the images into a single ultra high definition frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing DMD driving chips are used for laser TV display, then the device complexity and cost are reduced, but the image resolution is limited to FHD and cannot achieve ultra high definition
Solution Approach 1:
The patent segments each ultra high definition image frame into two separate frames, where each frame contains half of the original pixel information. This segmentation allows existing FHD DMD driving chips to process the divided frames while collectively reconstructing the ultra high definition image, thereby achieving higher resolution without requiring more advanced processing chips.
2Manufacturing precision
If existing FHD elements are used to display ultra high definition images, then the cost is reduced and application scope is widened, but the display resolution cannot naturally reach ultra high definition levels
Solution Approach 1:
The patent employs time-sharing display technique where two DMD driving chips alternately display their respective frames at different time intervals. The display timing is synchronized with the visual persistence of human vision, creating the perceptual effect of a complete ultra high definition image while actually using lower-resolution FHD elements.
3Manufacturing precision
If image frames are segmented and displayed in time-sharing manner, then ultra high definition display is achieved using FHD chips, but the processing time and frame rate requirements increase
Solution Approach 1:
The patent processes and displays only half of the total pixel information in each frame through each DMD chip, rather than attempting to process all pixels simultaneously. This partial processing approach reduces the computational burden on each chip while maintaining the overall ultra high definition resolution through temporal and spatial multiplexing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method allows for the display of ultra high definition images using existing FHD elements, achieving a high definition display with low cost and wide application by processing and displaying the segmented frames in a way that they are perceived as a single ultra high definition image by the human eye.
Implementation Method 1
leveraging the principle of visual persistence to combine the images into a single ultra high definition frame
Data Source
AI summary
The present invention provides an image processing method, system for laser TV and the laser TV set thereof, which receives a TV signal before converting into ultra high definition images sequences; whose each image is then segmented and converted into two frames of image, and two sequences of image will then be obtained; which are then driven by two DMD driving chips and displayed in a time share and diagonal staggered way during a period satisfying a visual persistence. The present invention utilizes a principle of visual persistence, since two frames of image segmented from a frame of ultra high definition image may be processed at a same time by two existing DMD driving chips being able to process FHD images, and both frames of image may be displayed at different positions on the screen at different time, forming one frame of ultra high definition image in a human's vision. The present invention owns a simple method, which utilizes an existing FHD element and achieves an ultra high definition display, has a low cost and a wide application.