Hand Orientation Detection for Single-Handed Tablet Operation
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Solution Overview
Problem
Large electronic devices, such as tablets, pose challenges for single-handed operation due to their size, making it difficult for users to reach input controls on the touch screen display with their thumb, especially when using the device for tasks like making voice calls or sending text messages.
Innovation Solution
The electronic device employs two sensors to detect the type and orientation of a user's hand, allowing it to reconfigure the display by shifting information towards the thumb side, facilitating single-handed operation by scaling and translating the display to be more accessible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the device size is increased to provide a larger display, then the display area is improved, but the ease of operation deteriorates because the thumb cannot reach input controls on the touch screen
Solution Approach 1:
The patent applies dynamics by making the display configuration adaptive rather than static. The system dynamically reconfigures the display layout based on real-time detection of hand orientation and thumb position, allowing the interface to adjust its properties (positioning of controls, information hierarchy) in response to changing operational conditions, thereby maintaining ease of operation across different device sizes
Solution Approach 2:
The patent changes key parameters of the display interface including the position of input controls, the scaling of display elements, and the orientation of information presentation. By modifying these parameters based on detected hand orientation, the system optimizes the display configuration to ensure thumb accessibility to critical controls while preserving the large display area
2Ease of operation
If the display output is rotated based on gravitational field detection, then the display orientation is improved, but it fails to provide suitable alignment in all situations
Solution Approach 1:
The patent extends the functionality of orientation detection beyond gravity-based methods to include hand orientation detection through capacitive sensors. This multi-functional approach allows the system to determine display orientation based on either gravitational field (when device is placed on a surface) or hand holding orientation (when device is held), providing universal adaptability across different usage scenarios
Solution Approach 2:
The system implements feedback by continuously monitoring hand orientation and thumb position through capacitive sensors, then using this information to adjust display configuration in real-time. This closed-loop feedback mechanism ensures the display remains optimally oriented and accessible regardless of how the user holds or interacts with the device
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 enables more efficient single-handed operation on larger devices by ensuring that important controls and information are within easy reach of the user's thumb, improving usability and reducing operational difficulties.
Implementation Method 1
the first sensor is a capacitive sensor configured to detect changes in a capacitance signal in response to contact with a user's hand
Implementation Method 2
the second sensor is an optical sensor configured to detect light reflected from the user's hand
Data Source
AI summary
A portable electronic device (100) for detecting type and orientation of a hand of a user is provided. The device can include a housing (101), a display (106), a control circuit (108), a first sensor (115), and a second sensor (116). The first sensor can determine a type of hand of the user supporting the portable electronic device. The second sensor can determine an orientation of the portable electronic device relative to the user. The control circuit of the portable electronic device can perform a function based on the type of hand as determined by the first sensor and the orientation of the portable electronic device as determined by the second sensor.