Storage Device Management for Smart Card Data Access
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Solution Overview
Problem
Smart cards with rewritable non-volatile memory modules face limitations in storage capacity and data access due to insufficient permissions and incorrect data access when using the Android 4.4.2 data accessing method, particularly with discontinuous logical addresses.
Innovation Solution
A storage device management method that establishes multiple temporary files in consecutive clusters of a file system, allowing the host to configure a temporary file directory in a rewritable non-volatile memory module, enabling correct access to smart card chips by linking cluster numbers to accessible directory areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data is transmitted between host system and smart card by accessing temporary files in particular directories, then data access is enabled, but user applications cannot perform data writing due to insufficient permissions
Solution Approach 1:
The patent introduces a host system as an intermediary between the user application and the smart card file system. The host system handles permission verification and file access control, allowing user applications to access temporary files through the host system's permission framework rather than directly confronting the smart card's restrictive file system permissions.
2Adaptability or versatility
If dynamic temporary files are established in the host system, then permission issues are solved, but the memory device cannot completely record the logical address when the address is fractured or discontinuous
Solution Approach 1:
The patent segments the file system into two distinct parts: a first file system on the smart card for secure data storage and a second file system on the host system for temporary file management. This segmentation allows each system to operate independently with its own addressing scheme, eliminating address fragmentation issues while maintaining permission flexibility through the host system's file management capabilities.
3Quantity of substance
If data writing is performed across multiple logical addresses, then larger data capacity is achieved, but data may be incorrectly accessed
Solution Approach 1:
The patent merges the smart card's secure storage capabilities with the host system's file management capabilities into a unified system. The host system manages temporary files and handles data writing operations across its own file system, while the smart card provides secure backend storage. This combination achieves large data capacity through the host system's flexible file allocation while maintaining data access accuracy through the host system's reliable file management protocols.
Data Source
AI summary
A storage device management method, a storage device management system and a memory storage device are provided. The method includes establishing multiple first temporary files in a first directory before receiving a setting instruction from a host, wherein the first temporary files are stored in multiple consecutive clusters of a file system and an operating system of the host is unable to access files in the first directory. The method further includes receiving the setting instruction from the host, wherein the setting instruction instructs to configure a temporary file directory in a second directory and the operating system of the host is able to access files in the second directory. The method further includes linking a cluster number of the consecutive clusters storing the first temporary files to the temporary file directory in the directory area corresponding to the file system.