Control Circuit for Irretrievable Mobile Data Erasure
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Solution Overview
Problem
Existing mobile phone data deletion methods are not thorough enough, allowing unscrupulous individuals to retrieve deleted data, posing a risk to data security.
Innovation Solution
A control circuit with a control unit, SIM unit, and memory unit is designed to irretrievably delete data by using a delete signal to control the SIM unit, which in turn manages the memory unit's reset pin to ensure irrevocable deletion, while a protection unit safeguards against damaging reverse currents and voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional data deletion methods are used, then data can be removed from the mobile phone, but the deletion is not thorough enough and data can be retrieved
Solution Approach 1:
The patent extracts the data deletion function from the control unit and implements it through the SIM unit's reset pin. By using the SIM unit as an intermediary to control the memory unit's reset function, the system achieves more thorough data deletion while maintaining security. The SIM unit acts as a separate entity that can irretrievably delete data without requiring the control unit to directly manage the memory unit.
2Reliability
If a protection unit is added to protect against reverse currents and voltages, then the memory unit is safeguarded from damage, but the device complexity increases
Solution Approach 1:
The protection unit is introduced as an intermediary component between the SIM unit and the memory unit. This mediator protects the memory unit from potential damage caused by reverse currents or voltages while allowing normal operation. The protection unit acts as a buffer that isolates the memory unit from harmful electrical conditions without requiring complex control mechanisms.
Data Source
AI summary
A control circuit to achieve irretrievable erasure of data in a mobile phone comprises a control unit, a SIM unit and a memory unit. The SIM unit is coupled with the control unit and the memory unit. The control unit can provides a delete signal to totally delete data of the memory by the SIM unit.