Stereoscopic Playback Device Alternating Image Plane Writes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Stereoscopic playback devices face issues with inconsistency between left and right images due to 'tearing' caused by incomplete frame rendering, leading to visual discomfort and hindering commercialization, as existing methods require costly and inflexible parallel processing of image planes.
Innovation Solution
Implementing a playback device that alternates writing processes between left and right image planes, ensuring both planes are written to a similar extent by the time a frame period arrives, minimizing inconsistency and maintaining flexibility and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If parallel processing is used to write both left and right image planes simultaneously, then rendering completion speed is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies periodic action by alternating between writing to the left image plane and the right image plane in a time-division multiplexed manner. Instead of simultaneous parallel writing, the system periodically switches between the two planes, writing a certain number of lines to one plane before switching to the other. This periodic alternation ensures both planes progress to a similar extent by frame period arrival, minimizing tearing inconsistency without requiring complex parallel processing hardware.
2Productivity
If parallel processing is used to write both left and right image planes simultaneously, then rendering completion speed is improved, but cost increases
Solution Approach 1:
The patent applies periodic action by alternating between writing to the left image plane and the right image plane in a time-division multiplexed manner. Instead of simultaneous parallel writing, the system periodically switches between the two planes, writing a certain number of lines to one plane before switching to the other. This periodic alternation ensures both planes progress to a similar extent by frame period arrival, minimizing tearing inconsistency without requiring complex parallel processing hardware.
3Device complexity
If alternate writing is used between left and right image planes, then device complexity is reduced, but rendering completion speed may decrease
Solution Approach 1:
The patent applies periodic action by alternating between writing to the left image plane and the right image plane in a time-division multiplexed manner. Instead of simultaneous parallel writing, the system periodically switches between the two planes, writing a certain number of lines to one plane before switching to the other. This periodic alternation ensures both planes progress to a similar extent by frame period arrival, minimizing tearing inconsistency without requiring complex parallel processing hardware.
Solution Approach 2:
The patent applies dynamics by making the writing process adaptive to the frame period timing. The system dynamically adjusts the number of lines written to each plane before switching, ensuring that both planes reach a similar completion state by the time the frame period arrives. This dynamic adjustment optimizes the alternate writing process to maintain rendering efficiency while using simpler hardware.
4Productivity
If incomplete frame rendering occurs, then productivity is maintained, but image consistency deteriorates causing visual discomfort
Solution Approach 1:
The patent applies periodic action by alternating between writing to the left image plane and the right image plane in a time-division multiplexed manner. Instead of simultaneous parallel writing, the system periodically switches between the two planes, writing a certain number of lines to one plane before switching to the other. This periodic alternation ensures both planes progress to a similar extent by frame period arrival, minimizing tearing inconsistency without requiring complex parallel processing hardware.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A playback time axis of a video stream is composed of a plurality of frame periods. To overlay a rendered image with a stereoscopic video image to be displayed in the i-th frame period, a process of writing to a left-view plan memory and a process of writing to a right-view plane memory both need to be completed before the start of the i-th frame period. To simultaneously request the two rendering processes, the argument of an application interface includes a pair of specifications, one specifying writing to the left-view plane memory and the other specifying writing to the right-view plane memory.