Autostereoscopic Display Sweet Zone Tracking
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Solution Overview
Problem
Autostereoscopic display systems face issues with users experiencing discomfort due to moving out of 'sweet zones' when the speed of these zones is slower than the user's eye movements, leading to higher crosstalk values and uncomfortable viewing experiences.
Innovation Solution
An autostereoscopic display system control method that captures object characteristics at multiple instants to determine movement direction and speed, adjusting the projection of left and right view images to maintain the center point deviation from the object's center line, thereby increasing the buffer distance between the user's eyes and the edges of the sweet zones to prevent entry into dead zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sweet zones move at a fixed speed, then the system is simple to control, but the user's eyes may go beyond the sweet zones when moving faster, causing discomfort
Solution Approach 1:
The patent applies dynamics by making the sweet zone movement speed adaptive rather than fixed. The system dynamically adjusts the movement speed of the sweet zones based on real-time detection of the user's eye movement speed, ensuring that the sweet zones always move at an appropriate speed to follow the user's eyes without causing discomfort or requiring complex manual control adjustments
2Stability of the object's composition
If the sweet zones follow the user's eyes slowly, then the system is stable and simple, but the user's eyes may exit the sweet zones when moving quickly, increasing crosstalk values
Solution Approach 1:
The patent implements feedback by continuously detecting the user's eye position and movement speed, then using this information to adjust the sweet zone movement in real-time. This closed-loop feedback mechanism ensures that the sweet zones dynamically adapt to the user's eye movements, maintaining low crosstalk values even when the user moves their eyes quickly, while preserving system stability through automated adaptive control
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
Ensures that the sweet zones move in sync with the user's eyes, maintaining comfortable viewing by preventing entry into dead zones and maintaining low crosstalk values, even at higher eye movement speeds.
Implementation Method 1
The plurality of parallax barriers 102 may adjust paths of light emitting from the plurality of pixels 104 for controlling positions where the left view image and the right view image are formed
Implementation Method 2
Mainstream autostereoscopic display system projects a left view image and a right view image to a user's left eye and right eye respectively so as to create a three-dimensional image perception for the user by utilizing the parallax effect
Data Source
AI summary
At least one characteristic of an object is captured at a first instant and the at least one characteristic of the object is then captured at a second instant. A moving direction and a moving speed of the object are calculated according to the at least one characteristic of the object captured respectively at the first instant and the second instant. A left view image and a right view image are projected to the object and if the moving speed of the object is greater than a threshold, a center point of the left view image and the right view image deviates from a center line of the object.