Mobile Terminal Unlocking via Distance Sensor Proximity Time
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Solution Overview
Problem
Existing mobile terminal unlocking methods, such as key and pattern unlocking, cause accelerated wear of physical keys and touch screens due to user interaction, and there is a need for a more practical and secure unlocking solution.
Innovation Solution
A method and device utilizing a distance sensor to determine the time an object stays close to the mobile terminal's screen within a pre-determined distance range, generating an unlocking signal based on this time, and unlocking the device when a pre-set sequence is matched, thereby reducing physical interaction and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physical keys or touch screens are used for unlocking, then the unlocking operation can be performed, but the wear of physical keys or touch screens is accelerated
Solution Approach 1:
The patent replaces the mechanical interaction system (physical keys or touch screen contact) with an optical sensing system (distance sensor). The distance sensor detects the proximity of the user's face without requiring physical contact, thereby eliminating the wear caused by mechanical friction while maintaining the unlocking function.
Solution Approach 2:
The patent introduces a distance sensor as an intermediary between the user and the unlocking mechanism. Instead of direct physical contact with keys or screen, the user's face serves as the intermediary object that triggers the unlocking process through proximity detection, reducing wear on the terminal's physical components.
2Duration of action of stationary object
If distance sensor is used for unlocking, then the wear of physical keys or touch screens is reduced, but the complexity of the unlocking system increases
Solution Approach 1:
The patent makes the distance sensor serve multiple functions: it detects face proximity for unlocking, measures the time duration of proximity, and provides the basis for generating unlocking signals. By leveraging the existing distance sensor's capabilities for multiple purposes, the system avoids adding separate components, thereby limiting the increase in overall system complexity.
Solution Approach 2:
The patent transforms the simple distance detection parameter into a temporal parameter by measuring the duration time that the distance remains within a predetermined range. This parameter transformation enables the system to distinguish between intentional unlocking attempts and accidental proximity, adding security without requiring additional hardware.
3Reliability
If time-based unlocking signal generation is implemented, then the security and practicality of unlocking is improved, but the processing time and computational complexity increase
Solution Approach 1:
The patent pre-sets the time threshold and distance range parameters before the unlocking process begins. The system continuously monitors distance and accumulates time duration in real-time, so when the predetermined time threshold is reached, the unlocking signal is generated immediately. This preliminary configuration eliminates the need for complex real-time calculations, reducing processing time while maintaining security.
Solution Approach 2:
The patent implements continuous monitoring of distance and time duration during the locking state. The distance sensor operates continuously to accumulate time data, so when the user approaches, the system is already prepared to generate an unlocking signal as soon as the time threshold is met. This continuous action eliminates delays and reduces the perceived processing time for the user.
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
The solution provides a secure and practical unlocking mechanism that decreases wear on physical keys and touch screens while enhancing confidentiality and usability by using a distance sensor to generate unlocking signals based on time proximity, allowing for encrypted protection of the mobile terminal.
Implementation Method 1
A distance sensor is a common sensor in a current mobile terminal, which is arranged on a front surface of a mobile phone and is able to detect a distance between an object and the mobile terminal
Data Source
AI summary
The disclosure discloses a method and device for unlocking a mobile terminal, which relate to the technical field of mobile terminals. The method includes the following steps that: when a mobile terminal is in a locking state, a time length for an object to stay close to a screen of the mobile terminal and to be maintained within a pre-determined distance range is determined; a corresponding unlocking signal is generated according to the time length; and the mobile terminal is unlocked according to the unlocking signal. According to the disclosure, the mobile terminal can be encrypted and unlocked by using a distance sensor, which brings both great practicability and high confidentiality.