Mobile Terminal Memory Card Locking Mechanism
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Solution Overview
Problem
Recent mobile terminals, such as smartphones, lack effective anti-theft solutions to prevent unauthorized extraction of memory cards like SIM and SD cards, as existing methods are not adaptable to embedded batteries and often require cumbersome safety modes that users may forget to activate.
Innovation Solution
A mobile terminal with a processing unit and card locking means that locks memory cards when powered on, requiring user authentication through input interfaces like screens, fingerprint scanners, or cameras to unlock, ensuring the card locking mechanism is only accessible upon successful authentication, thus preventing unauthorized extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If card locking means is always locked to prevent theft, then security is improved, but user convenience deteriorates as users cannot easily extract cards when needed
Solution Approach 1:
The card locking mechanism transitions from a static always-locked state to a dynamic state that changes based on authentication. The locking means is controlled by a processing unit that receives authentication input from users, allowing the system to adapt between locked and unlocked states. This resolves the contradiction by making the security state dynamic rather than fixed, enabling both strong protection and user convenience.
Solution Approach 2:
An authentication interface acts as an intermediary between the user and the card locking mechanism. Instead of directly controlling the lock, users interact with a processing unit through authentication methods (PIN, fingerprint, etc.), which then controls the locking means. This intermediary layer provides both security verification and user-friendly operation, resolving the contradiction between security and convenience.
2Reliability
If authentication procedure is required for every card extraction, then security is improved, but operation complexity increases
Solution Approach 1:
The authentication interface serves multiple functions: it authenticates users, controls card locking/unlocking, and can be integrated with existing mobile terminal security features. By making the authentication system universal and multi-functional, the patent avoids adding separate complex authentication mechanisms, thereby reducing overall device complexity while maintaining strong security.
Solution Approach 2:
The system uses self-service authentication methods that are already familiar to users, such as fingerprint scanners, facial recognition, or PIN codes that are part of the mobile terminal's existing security infrastructure. Users authenticate themselves through their own biometric data or credentials without requiring external assistance or complex procedures, thus maintaining simplicity while improving security.
3Reliability
If safety mode is activated to lock battery and prevent shutdown, then anti-theft protection is improved, but user flexibility deteriorates and users may forget to deactivate
Solution Approach 1:
The patent extracts the security control function from the power management system. Instead of locking the battery and preventing shutdown at the power management level (safety mode), the card locking function is separated and controlled independently through authentication. This allows the terminal to shutdown normally while still protecting the memory card, resolving the contradiction between security and operational flexibility.
Solution Approach 2:
The security function is segmented into a separate card locking mechanism independent of the power management system. The battery and shutdown controls remain separate from card access controls. This segmentation allows users to shutdown the terminal freely while the card locking mechanism operates independently based on authentication status, eliminating the need for cumbersome safety modes and their associated problems.
Data Source
AI summary
The disclosed technology relates to a mobile terminal adapted to receive a memory card comprising a processing unit, an input interface and a card locking actuator configured to lock the memory card into the mobile terminal. The card locking actuator is controlled by the processing unit. In one aspect, the card locking actuator is configured to be locked when the mobile terminal is switched on. In another aspect, the processing unit is configured to lock the screen until a screen unlocking authentication procedure is performed by a user at the input interface and is configured to command unlocking of the card locking actuator after detecting that a predetermined authentication procedure is performed by a user at the input interface.