Ear Shape Detection for Automatic Mobile Terminal Unlocking
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Solution Overview
Problem
Current mobile terminals require users to manually unlock and tap to answer calls, which is inconvenient and does not meet the increasing intelligence level requirements of users.
Innovation Solution
A method and mobile terminal design that allows automatic answering of calls by detecting the pressure and coordinates of an ear touching the screen, using pre-stored sample coordinates to verify the user's ear shape and unlock the device upon matching, employing piezoelectric multi-touch technology for pressure sensing and Digital Signal Processing to analyze and compare ear contours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual unlocking and tapping to answer calls is required, then device security is maintained, but user convenience deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting ear contact and automatically unlocking the device before the user needs to manually answer the call. The ear detection triggers a sequence of automatic operations including unlocking and answering, eliminating the need for manual intervention.
Solution Approach 2:
The system serves itself by automatically detecting the user's ear contact with the device and autonomously performing the unlocking and call-answering operations. The device responds to the physical gesture without requiring additional user commands or interactions.
2Extent of automation
If ear shape recognition is implemented, then automatic answering capability is improved, but measurement precision requirements increase
Solution Approach 1:
The system changes parameters by using relative coordinates instead of absolute coordinates for ear shape matching. This transformation makes the recognition system more robust to variations in device placement and orientation, reducing the stringency of precision requirements while maintaining automatic answering capability.
Solution Approach 2:
The system creates a digital copy or model of the user's ear shape through coordinate sampling and stores it for later comparison. This copied representation allows for efficient automated matching without requiring high-precision real-time measurement during the actual call answering process.
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
Enables users to automatically answer calls by simply touching their ear to the screen, enhancing user convenience and meeting higher intelligence level requirements for mobile terminals.
Implementation Method 1
employing piezoelectric multi-touch technology for pressure sensing
Data Source
AI summary
Methods of automatically answering a phone call with a mobile terminal and associated mobile terminals are disclosed. A method includes: if there is an incoming phone call, obtaining every predetermined period of time a pressure value and coordinates of each contact point between an ear of a current user and a touch screen; obtaining an outer contour of the ear based on the pressure values and coordinates; selecting among the outer contour three parts of the ear to establish reference coordinate axes; obtaining relative coordinates of each contact point corresponding to each part in the outer contour with respect to the reference coordinate axes; comparing the relative coordinates with pre-stored sample coordinates that comprise coordinates of each part of an ear of an authorized user relative to reference coordinate axes; and if the relative coordinates match with the pre-stored sample coordinates, unlocking the mobile terminal and answering the phone call.