Tamper-Triggered Data Clearing Circuit for Split-Casing Electronics
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Solution Overview
Problem
Electronic devices, such as electronic wallets and head-mounted devices, face challenges in protecting confidential information from unauthorized access and theft.
Innovation Solution
An electronic device design featuring a first and second casing with a detection loop and data clearing circuit, where disconnection of the casings triggers data clearing in a storage chip, ensuring data security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the electronic device uses a storage chip to store confidential information, then the data storage capability is improved, but the security against unauthorized access deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring a data clearing circuit that automatically executes data erasure when a detection loop is broken. The system prepares the data clearing mechanism in advance, so that when tampering occurs (casings separated), the data is immediately cleared without requiring user intervention. This prevents unauthorized access by ensuring data is erased before potential theft can occur.
Solution Approach 2:
The detection loop serves as an intermediary element between the physical casing structure and the data clearing circuit. When the first and second casings are separated, the detection loop breaks, triggering the data clearing circuit. This intermediary mechanism translates physical tampering into an automatic data protection response, resolving the contradiction between maintaining data availability and preventing unauthorized access.
2Ease of manufacture
If the device structure is made separable into first and second casings, then the ease of manufacture and assembly is improved, but the security against data theft deteriorates
Solution Approach 1:
The electronic device is segmented into a first casing and a second casing that can be separately assembled and manufactured. This segmentation improves ease of manufacture and assembly while the detection loop connects these separate parts. The segmentation principle allows modular production while maintaining security through the integrated detection and data clearing system.
Solution Approach 2:
The patent applies preliminary anti-action by incorporating a detection loop and data clearing circuit that preemptively counteract potential data theft. When the casings are separated (indicating potential theft), the system automatically clears data before unauthorized access can occur. This preliminary protective measure resolves the contradiction by maintaining separable structure while preventing data theft through automated counter-action.
3Object-affected harmful factors
If a detection loop and data clearing circuit are added to protect data, then the security against unauthorized access is improved, but the device complexity deteriorates
Solution Approach 1:
The patent extracts the data clearing function as a separate, dedicated circuit component that is electrically connected to the detection loop. This extraction allows the data clearing circuit to operate independently when triggered, simplifying the control logic while maintaining security. The separate circuit design reduces overall system complexity compared to integrating data clearing functionality into the main processor or storage control logic.
Data Source
AI summary
An electronic device includes a first casing, a second casing, a storage chip, a detection loop, and a data clearing circuit. The second casing is assembled to the first casing and forms an accommodation space together. The storage chip is disposed in the accommodation space. The detection loop is electrically connected to the storage chip. The detection loop includes a first section and a second section that are physically connected. The first section is fixed to first casing. The second section is fixed to second casing. The data clearing circuit electrically connects the storage chip and detection loop. When the first casing is separated from the second casing, the first section and the second section are physically disconnected, and the data clearing circuit is powered to clear data stored in the storage chip.