Multi-Display Image Region Mapping for Aspect Ratio Mismatch
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Solution Overview
Problem
Existing display systems face issues when projecting images between devices with different aspect ratios, leading to wasted display regions due to black stripes when one device lacks a mechanism to rotate the digital micro-mirror device (DMD) by 90 degrees.
Innovation Solution
A display method and system that involves acquiring master images, setting regions based on aspect ratios, and maintaining positional relationships between display areas of different devices to optimize image display across devices with varying aspect ratios, reducing wasted space and minimizing information loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the projector maintains the aspect ratio of the smartphone display area when projecting, then the displayed image preserves the original proportions, but black stripes appear on both sides in the horizontal direction and the display region cannot be used to the maximum
Solution Approach 1:
The patent applies dynamics by making the region settings adjustable and adaptive rather than fixed. The system dynamically determines first and second regions based on different aspect ratios, allowing the display to adapt between preserving aspect ratio and maximizing display area depending on the projection scenario
Solution Approach 2:
The patent changes the parameter of region selection by introducing multiple configurable regions (first region for aspect ratio preservation, second region for area maximization) and allowing switching between them based on the projection needs and device capabilities
2Adaptability or versatility
If the projector rotates the DMD by 90 degrees to match vertical smartphone usage, then the aspect ratio is maintained, but devices without DMD rotation mechanism cannot achieve proper display
Solution Approach 1:
Instead of physically rotating the DMD hardware, the patent creates a virtual rotation effect by selecting and configuring appropriate display regions and aspect ratios through software control, achieving the same visual result without the mechanical rotation mechanism
Solution Approach 2:
The patent replaces the mechanical DMD rotation system with a software-based region selection and aspect ratio configuration system, eliminating the need for physical moving parts while achieving the same functional outcome of adapting to vertical smartphone usage
3Device complexity
If the projector displays images without DMD rotation capability in vertical orientation, then the device structure remains simple, but black stripes appear and the display region is not fully utilized
Solution Approach 1:
The patent changes the display parameters by introducing multiple region configurations and aspect ratio settings that can be selected based on the projection scenario, allowing the system to maximize display area without requiring complex hardware modifications
Data Source
AI summary
A display method includes: acquiring a master image; acquiring a first aspect ratio of a first display area, the first display area being an area in which a first image is displayed by a first display device; setting a first region in a master region of the master image based on the first aspect ratio; displaying, on the first display area, the first image obtained by cutting out an image portion inside the first region in the master image; acquiring a second aspect ratio of a second display area, the second display area being an area in which a second image is displayed by a second display device; setting, in the master region, a second region having an overlapping region that overlaps the first region and a non-overlapping region that does not overlap the first region in at least one of a first direction and a second direction that are orthogonal to each other in the master region, based on the second aspect ratio; displaying, on the second display area, the second image obtained by cutting out an image portion inside the second region; setting a positional relationship between the first region and the second region; and updating, when one of the first region and the second region is updated, the other region to maintain the positional relationship.