Parallax Barriers for Multi-Viewer Display Segmentation
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Solution Overview
Problem
Current display technologies cannot effectively show multiple images simultaneously to different viewers on the same screen without reducing overall display space or compromising safety by distracting the driver with passenger content.
Innovation Solution
The use of two parallax barriers, one placed between the display and the viewer, with adjustable opaque and transparent regions, allows for interleaving of images to be viewed by different angles and locations, enabling two distinct images to be displayed on a single screen without the need for 3D glasses, while maintaining the original aspect ratio and minimizing driver distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display is divided into two or more segments to show multiple images simultaneously, then multiple images can be displayed to different viewers, but the overall display space for each image is reduced
Solution Approach 1:
The patent applies segmentation by dividing the display into multiple segments, where each segment displays a different image for different viewers. The display is divided into a first segment displaying a first image and a second segment displaying a second image, allowing simultaneous display of multiple images to different viewers while maintaining full display area utilization through the use of parallax barriers to direct each segment's image to the appropriate viewer.
2Adaptability or versatility
If the display shows passenger content, then the passenger can view entertainment, but the driver may be distracted from safe operation
Solution Approach 1:
The patent applies local quality by providing different visual content to different spatial locations and viewers. The display system uses parallax barriers to create distinct viewing zones, where the driver's viewing area shows driving-related information while the passenger's viewing area shows entertainment content. This spatial differentiation ensures that each viewer receives appropriate content for their role without interfering with the other's attention and safety.
3Adaptability or versatility
If a single display shows multiple images using traditional methods, then multiple images can be displayed, but the images are interleaved and require 3D glasses or specific viewing conditions
Solution Approach 1:
The patent applies dimensionality change by utilizing the spatial dimension through parallax barriers to separate viewing paths. Instead of interleaving images in the temporal dimension (requiring 3D glasses), the system displays multiple images simultaneously in different spatial segments, with parallax barriers directing each segment's light to specific viewing angles. This allows multiple images to be displayed concurrently without requiring special glasses or complex temporal 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 solution allows for simultaneous display of two images to different viewers on a single screen, preserving the aspect ratio and reducing passenger image distraction for the driver, while ensuring the driver can focus on the road without being overwhelmed by passenger content.
Implementation Method 1
The first parallax barrier includes a first number of parallax barrier lines, where the first number of parallax barrier lines are opaque and parallel to the vertical axis. The second parallax barrier includes a second number of parallax barrier lines, where the second number of parallax barrier lines are opaque and parallel to the vertical axis.
Data Source
AI summary
Examples of the present disclosure relate to a device, method, and medium storing instructions for execution by a processor for displaying multiple images. In an example, a device may include a display to present two images interleaved, where the display includes a vertical axis parallel to a line passing through a center-bottom of the display and a center-top of the display. The device includes a first parallax barrier placed between the display and an intended viewable area, where the first parallax barrier includes a first number of parallax barrier lines, where the first number of parallax barrier lines are opaque and parallel to the vertical axis. The device includes a second parallax barrier placed between the first parallax barrier and the intended viewable area, where the second parallax barrier includes a second number of parallax barrier lines, where the second number of parallax barrier lines are opaque and parallel to the vertical axis.