Multi-view Video Switching via Vertical Blanking Interval Detection
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Solution Overview
Problem
Conventional multi-view video switching methods in DuoView environments require specifying a graphic array, leading to a maximum additional cycle for video switching, which is inefficient.
Innovation Solution
A method and system that determine and switch video sources between graphic arrays based on the detection of vertical blanking intervals, allowing for continuous detection and switching between graphic arrays, thereby reducing the time required for video switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the conventional Flip technique is used to switch video sources in the vertical blanking interval of a specific graphic array, then the video switching can be completed, but it takes a maximum of an additional whole cycle to complete the switching
Solution Approach 1:
The patent implements dynamic video switching by continuously monitoring vertical blanking intervals of multiple graphic arrays and selecting the earliest available interval for switching. This dynamic approach replaces the static conventional method of switching only after a specific graphic array's interval is detected, enabling the system to adapt to varying timing conditions and minimize switching delays
Solution Approach 2:
The patent performs preliminary detection of vertical blanking intervals for multiple graphic arrays before executing the video source switch. By anticipating the earliest available interval through advance detection, the system prepares for switching in advance rather than waiting passively for a specific graphic array's interval to occur
2Reliability
If the video source is switched in the vertical blanking interval of a specific graphic array, then the switching can be performed, but an additional whole cycle is required
Solution Approach 1:
The patent merges the monitoring and switching operations for multiple graphic arrays into a unified process. By combining the detection of vertical blanking intervals from multiple graphic arrays and executing a single coordinated switch at the earliest available interval, the system achieves reliable switching without requiring separate cycles for each graphic array
Data Source
AI summary
Multi-view video switching control methods and systems are disclosed. It is determined whether a VBI (vertical blanking interval) of signals respectively transmitted by a first GA (graphic array) and a second GA is detected. The video source of first and second GAs belongs to the same first video source. If the VBI corresponding to first GA is detected first, the video source of first GA is switched to a second video source, and the video source of second GA is switched to the second video source if the VBI corresponding to second GA is then present. If the VBI corresponding to second GA is detected first, the video source of second GA is switched to the second video source, and the video source of first GA is switched to the second video source if the VBI corresponding to first GA is then present.