SIM Tray Power Control for Hot Insertion Prevention
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Solution Overview
Problem
Conventional methods for inserting and extracting SIM cards in cellular phones require battery removal, leading to inconvenience, and existing solutions allow for hot insertion and extraction, which is undesirable.
Innovation Solution
An information processing device with a tray removal system that includes a removal detector, power controller, and tray detector to manage power supply to the SIM card, ensuring it is stopped before insertion or extraction, preventing hot operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery removal is required for SIM card insertion/extraction, then hot insertion/extraction is prevented, but user convenience deteriorates
Solution Approach 1:
The power controller stops power supply to the SIM card before the tray is fully removed, and starts power supply before the tray is fully inserted. This preliminary action of power control prevents hot insertion/extraction while allowing the tray to be operated without battery removal, thus resolving the contradiction between reliability and ease of operation
Solution Approach 2:
The power controller acts as an intermediary between the tray detector and the SIM card power supply. It receives detection signals from the tray detector and controls power supply timing accordingly, enabling automatic power management that prevents hot operations while maintaining user convenience of tray-based SIM card access
2Ease of operation
If tray-based SIM card access is implemented, then user convenience is improved, but risk of hot insertion/extraction increases
Solution Approach 1:
The tray detector provides feedback signals to the power controller about the tray's insertion/removal state. Based on this feedback, the power controller automatically adjusts power supply timing, enabling the tray-based convenient access method while preventing hot insertion/extraction through automated power management
Solution Approach 2:
The system performs preliminary power supply cessation when removal is detected, and preliminary power supply activation when insertion is detected. This preliminary action ensures that power is never supplied during hot insertion/extraction operations, resolving the contradiction by maintaining reliability while enabling convenient tray-based access
Data Source
AI summary
The present technique relates to an information processing device, an information processing method, a record medium and a program which can prevent hot insertion and extraction of an SIM card. A removing unit removes a tray storing a storage member. A removal detector detects an operation of starting removal of the tray before the removing unit removes the tray. A power controller stopping power supplying to the storage member when the removal detector detects the operation of starting the removal of the tray may be employed. The present technique may be applied, e.g., to a personal computer.