Autofocus Frame Depth and Color Feedback for Stereoscopic Displays
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Solution Overview
Problem
Current mobile devices with stereoscopic or autostereoscopic displays face challenges in providing an effective autofocus mechanism that clearly indicates the focusing process to the user, especially in transitioning from a two-dimensional to a three-dimensional image representation.
Innovation Solution
The implementation of an autofocus frame that moves or changes color on the display to indicate the focusing process, allowing the user to perceive depth and understand when the focus is complete, utilizing a combination of camera logic and user interface elements to enhance user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a stereoscopic or autostereoscopic display is used to provide 3D images, then the user can perceive depth and image quality is improved, but the autofocus mechanism becomes less clear and user understanding of focus completion deteriorates
Solution Approach 1:
The patent applies color changes to the autofocus frame to indicate focus completion. The frame transitions through color states (e.g., red to green) to provide clear visual feedback to the user about the autofocus status, resolving the contradiction by maintaining precise 3D imaging while improving focus indication clarity through color transformation.
Solution Approach 2:
The patent extends the autofocus indication into the third dimension by making the autofocus frame appear to move toward or away from the user in the stereoscopic display. This depth-based indication works harmoniously with the 3D image quality while providing intuitive focus status feedback, addressing both improved image quality and maintained indication clarity.
2Loss of information
If an autofocus frame is added to indicate focusing process, then user understanding of focus completion is improved, but device complexity increases
Solution Approach 1:
The autofocus frame serves multiple functions simultaneously: it indicates the active focus area, shows focus completion status through color or position changes, and provides depth information in 3D mode. This multi-functionality reduces the need for separate indication mechanisms, thereby improving autofocus clarity without proportionally increasing device complexity.
Solution Approach 2:
The patent changes parameters of existing display elements (color, position, transparency) to convey autofocus status rather than introducing entirely new components. The autofocus frame's color transitions or positional movements provide clear focus indication while reusing existing display hardware, thus improving indication clarity with minimal increase in device complexity.
Data Source
Figure 1
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Figure 3A~3F
AI summary
A device may include a camera including a lens assembly and a stereoscopic display for displaying an image to be captured by the camera. The device may include processing logic to automatically determine a correct focus for the camera. In one embodiment, when the processing logic is determining the correct focus, the stereoscopic display shows an icon on the image moving from a first perceived depth to a perceived second depth. The device may further include a memory to store the captured image. In one embodiment, the stereoscopic display may display the image to be captured by the camera in three dimensions such that the user perceives depth. In one embodiment, when the processing logic has determined the correct focus for the camera, the stereoscopic display may show the icon at a perceived depth corresponding to the correct focus.