Intensity-Based Tactile Feedback for Locked Device Interfaces
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Solution Overview
Problem
Current methods for interacting with electronic devices with touch-sensitive surfaces are cumbersome and inefficient, particularly in providing haptic feedback and accessing locked mode features, which can lead to accidental activations and energy wastage in battery-operated devices.
Innovation Solution
The implementation of a method that uses intensity-based criteria and tactile outputs to enhance user interaction, allowing for intuitive and fast access to locked mode features while minimizing accidental activations, and adjusts tactile outputs to avoid interfering with audio capture during media recording in camera applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If haptic feedback is provided for all user inputs on locked mode features, then user interaction accuracy is improved, but power consumption increases and may cause accidental activations
Solution Approach 1:
The patent changes the parameter of haptic feedback intensity based on the operational context. During media capture, haptic feedback is suppressed or reduced to minimize power consumption and avoid interfering with audio recording, while maintaining full haptic feedback in other locked mode operations to ensure accurate user interaction.
2Reliability
If haptic feedback is provided during media capture, then user action confirmation is improved, but audio recording quality deteriorates
Solution Approach 1:
The system preemptively suppresses haptic feedback during media capture operations to prevent it from interfering with audio recording. By anticipating the potential harmful effect of haptic feedback on audio quality, the system proactively disables or reduces haptic output during these specific operations.
3Reliability
If multiple input sequences are required for locked mode features, then accidental activation is reduced, but operation efficiency deteriorates
Solution Approach 1:
The patent implements dynamic input requirements for locked mode features. The system adjusts the number of required input sequences based on the specific feature being accessed and the current operational context, allowing for more efficient access to frequently used features while maintaining security for sensitive operations.
Data Source
AI summary
An electronic device detects, on a touch-sensitive surface, a user input directed to a user interface element associated with a respective operation, for example in a user interface for a locked mode of operation of the device. A first portion of the user input includes an increase in intensity of the contact followed by a second portion of the user input that includes a decrease in intensity of the contact. In response to the user input, the device displays a transformation of the user interface element, wherein a degree of the transformation is determined based on an intensity of the user input. If the user input satisfies feed-forward criteria, including a requirement that a characteristic intensity of the contact increase above a feed-forward intensity threshold, the device generates a first tactile output without performing the respective operation. Otherwise, the device generates a second tactile output and performs the respective operation.