Handheld Device Removable Memory Association Control
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Solution Overview
Problem
The widespread use of removable storage media on mobile devices poses a significant security risk due to the lack of security policies, with sensitive information being inadvertently transferred during synchronization, and existing DRM systems are costly and inflexible, especially for real-time data transfers.
Innovation Solution
A system and method that continuously synchronizes data between a removable memory source and a handheld device by querying the memory source for association with the device or user account, allowing synchronization only if associated, and configuring the memory source for association if permitted by the user, thereby preventing inadvertent data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data synchronization is enabled between removable memory sources and mobile devices, then data transfer flexibility and ease of use are improved, but security risks and unauthorized data transfer increase
Solution Approach 1:
The system performs preliminary actions by establishing DRM protection and authentication mechanisms before any data synchronization occurs. The memory source is registered with the device and user account in advance, and DRM rights are predetermined, so that when data transfer is requested, the authentication and authorization are already in place, preventing unauthorized transfers while maintaining ease of use for legitimate operations.
Solution Approach 2:
The patent introduces DRM (Digital Rights Management) as an intermediary layer between the removable memory source and the mobile device. This intermediary controls and regulates data synchronization by verifying authentication, checking DRM rights, and managing authorization, thereby enabling flexible data transfer for authorized users while blocking unauthorized access and preventing security risks.
2Reliability
If DRM systems are implemented for real-time data transfers from removable memory sources, then security and access control are improved, but cost and system complexity increase
Solution Approach 1:
The patent makes the DRM system universal by enabling it to work across multiple device types (mobile phones, PDAs, digital cameras, media players) and multiple memory source types (SD cards, USB drives, memory sticks). The same DRM infrastructure handles authentication, authorization, and encryption for all devices and memory sources, reducing per-device complexity while maintaining robust access control through shared security protocols and centralized rights management.
3Ease of manufacture
If batch mode data transfer is used for DRM-protected content, then cost and control are improved, but real-time data transfer capability deteriorates
Solution Approach 1:
The patent makes the data transfer system dynamic by allowing it to adapt between batch mode and real-time streaming based on DRM authorization. For content with restrictive DRM rights, the system operates in batch mode with full authentication and control. For content with permissive DRM rights that allow streaming, the system automatically switches to real-time data transfer, providing both cost-effective DRM implementation and real-time capability when appropriate.
Data Source
AI summary
A method is disclosed for continuously synchronizing data to and from a removable memory source connected to a user's handheld device. When the memory source is inserted into the handheld device, the device queries the memory source to determine whether the memory source is associated with the device or with an online service associated with the device. Upon determining that the memory source is associated with the device, the device exposes the memory source to the online service and allows read and write access to the online service. Upon determining that the memory source is not associated with the device, the device further checks to determine whether the user seeks to associate the memory source with the device. If the user chooses not to do so, the user is allowed to view and modify the contents of the memory source without synchronizing data to and from the online service.