Multifunction Physical Button Context-Aware Function Assignment
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Solution Overview
Problem
Existing techniques for managing multifunction physical buttons on electronic devices are cumbersome, inefficient, and prone to unintentional actions, leading to wasted time and energy, particularly in battery-operated devices, where accidental button presses can result in unintended device functions such as display or device power off during critical operations like taking pictures.
Innovation Solution
A method and interface that detect the activation of a physical button on electronic devices with a display and image sensor, determining whether specific criteria are met to either capture an image or turn the display off, thereby preventing unintended functions and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a physical button is configured to perform multiple functions (power off and image capture), then the device functionality is improved, but unintentional activation and functional ambiguity increase
Solution Approach 1:
The patent implements dynamic function assignment where the physical button's behavior changes based on the active application context. When the camera application is active, the button triggers image capture; when other applications are active, it performs power off or other functions. This dynamic adaptation allows one button to serve multiple purposes while maintaining clear, context-appropriate functionality to prevent user confusion and accidental activation.
2Ease of operation
If existing techniques are used to manage multifunction physical buttons, then device operation is possible, but user interface complexity and time consumption increase
Solution Approach 1:
The system performs preliminary detection of the active application state before the button press is fully registered. When the camera application is detected as active, the system pre-configures the button press handler to trigger image capture rather than power off. This preliminary contextual assessment eliminates the need for complex post-press disambiguation interfaces, reducing user time consumption and simplifying the interaction flow.
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors which application is currently active and uses this information to determine the appropriate button function. This contextual feedback loop allows the device to automatically select the correct action (image capture vs. power off) based on the user's current task context, eliminating the need for complex manual configuration or ambiguous default behaviors.
3Speed
If the power button is activated near-simultaneously with the shutter-release button, then rapid operation is possible, but image capture reliability decreases
Solution Approach 1:
The system dynamically determines button function based on application context rather than fixed temporal sequences. When the camera application is active, even if the power button is pressed simultaneously with or near the shutter-release button, the system interprets the intent as image capture. This dynamic contextual interpretation maintains high-speed operation while ensuring reliable image capture by eliminating ambiguous temporal disambiguation requirements.
Data Source
AI summary
The present disclosure generally relates to multifunction physical buttons. An electronic device detects activation of a physical button. The device determines whether a set of one or more criteria are met. If the set of one or more criteria are met, the device captures an image using an image sensor. If the set of one or more criteria are not met, the device turns off the display of the device. Thus, the same physical button can perform different functions based on whether the set of one or more criteria are met.