Vehicle Display Viewing-Angle Filter for Passenger Motion Sickness
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Solution Overview
Problem
Existing display systems in motor vehicles that use camera monitoring systems (CMS) often cause motion sickness in co-passengers due to the wide viewing angle, and static screen filters cannot adapt to different driver positions, leading to inefficient viewing angles.
Innovation Solution
A display system with a camera module, display unit, filter, and processing unit that dynamically adjusts the viewing angle based on the driver's position, using a filter with switchable ribs that can be electronically enabled or disabled to restrict the viewing angle to the driver only.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide viewing angle is provided on the display unit to accommodate all possible driver positions, then the driver can always view the display, but the co-passenger's observable angle is interfered with and motion sickness occurs
Solution Approach 1:
The filter's viewing angle is made dynamically adjustable rather than fixed. The processing unit changes the filter's viewing angle based on the driver's seating position detected by the driver position detection system, allowing the system to adapt to different drivers while preventing co-passenger motion sickness.
Solution Approach 2:
The system uses a driver position detection system to detect the driver's seating position and provides feedback to the processing unit. The processing unit then adjusts the filter's viewing angle accordingly, creating a closed-loop feedback system that optimizes the viewing angle for each driver position.
2Adaptability or versatility
If a static screen filter with a greater viewing angle is used to cater all driver positions, then all drivers can view the display, but the co-passenger's observable angle is interfered with
Solution Approach 1:
The filter transitions from a static fixed viewing angle to a dynamic adjustable viewing angle. The processing unit receives driver position information and adjusts the filter's viewing angle in real-time, enabling the system to accommodate different driver positions without compromising co-passenger comfort.
Solution Approach 2:
The system changes the viewing angle parameter of the filter based on detected driver position. Instead of using a fixed viewing angle, the processing unit adjusts the viewing angle parameter dynamically to match the driver's seating position, optimizing both driver visibility and co-passenger comfort.
3Object-affected harmful factors
If the filter is always in the enabled state to restrict viewing angle, then co-passenger motion sickness is reduced, but the driver cannot view the display from all positions
Solution Approach 1:
The filter's viewing angle restriction is made dynamic rather than constant. The processing unit adjusts the filter's viewing angle based on real-time driver position detection, ensuring that the driver can always view the display while still preventing co-passenger motion sickness when the driver is in the correct position.
Solution Approach 2:
The driver position detection system continuously monitors the driver's seating position and provides feedback to the processing unit. The processing unit then adjusts the filter's viewing angle accordingly, creating a feedback mechanism that ensures optimal viewing conditions for the driver while preventing motion sickness in the co-passenger.
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
The system effectively limits the viewing angle to the driver, reducing motion sickness in co-passengers and ensuring optimal viewing angles regardless of the driver's position, while also allowing for customizable viewing angles based on user input.
Implementation Method 1
at least one filter configured to selectively allow at least one viewing angle (VA) out of the plurality of viewing angles, wherein the filter is positioned on or over the display unit
Implementation Method 2
the ribs are configured to be switched between at least two states by applying a voltage, and/or the light transmission properties of the ribs are configured to be altered when voltage, light and/or heat is applied
Implementation Method 3
the filter allows exhibition of the FOV in the at least one viewing angle (VA) of the plurality of viewing angles in an event the filter is in the enabled state, with the at least one viewing angle (VA) being a subset of the plurality of viewing angles, and the filter allows exhibition of the FOV in all of the plurality of viewing angles in an event the filter is in the disabled state
Data Source
AI summary
The present disclosure relates to a display system for a vehicle, comprising: at least one camera module configured to capture a field-of-view (FOV) in a scenery at least partly around the vehicle; at least one display unit configured to display the captured FOV, wherein the display unit has a plurality of viewing angles; at least one filter configured to selectively allow at least one viewing angle (VA) out of the plurality of viewing angles, wherein the filter is positioned on or over the display unit; and at least one processing unit configured to operate the filter in either an enabled state or a disabled state, wherein the filter allows exhibition of the FOV in the at least one viewing angle (VA) of the plurality of viewing angles in an event the filter is in the enabled state, with the at least one viewing angle (VA) being a subset of the plurality of viewing angles, and the filter allows exhibition of the FOV in all of the plurality of viewing angles in an event the filter is in the disabled state. It also relates to a vehicle with such a display system and a method for operating the same.