Wireless Storage Device Power Management via Electromagnetic Induction
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Solution Overview
Problem
Existing storage devices lack efficient mechanisms for managing access to content stored in non-volatile memory, particularly in wireless communication systems, where power supply and secure data access are critical.
Innovation Solution
A wireless storage device with a wireless communication function, equipped with a connection unit, non-volatile memory for content storage, and controllers for managing permission information, uses radio waves for power generation and updates permission status via electromagnetic induction, allowing or disallowing access based on status data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used for updating permission information, then ease of operation is improved, but power consumption increases
Solution Approach 1:
The storage device uses its own antenna to wirelessly receive update information and generate power through electromagnetic induction, making the system self-sufficient without requiring external power connections during permission updates
Solution Approach 2:
The patent replaces physical power connections and mechanical interfaces with wireless electromagnetic communication, eliminating the need for power cables while enabling remote permission updates
2Ease of operation
If electromagnetic induction is used for power generation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The antenna serves dual functions: wireless communication for receiving update information and electromagnetic induction for power generation, eliminating the need for separate power supply components
Solution Approach 2:
The patent combines the communication function and power generation function into a single antenna system, reducing overall device complexity by eliminating separate power connection interfaces
3Reliability
If permission information is stored in non-volatile memory, then reliability is improved, but access security becomes more difficult to manage
Solution Approach 1:
Permission information is pre-stored in non-volatile memory before actual data access occurs, enabling quick authentication decisions without complex real-time analysis
Solution Approach 2:
The patent introduces permission information as an intermediary layer between stored data and access requests, simplifying security management by using pre-defined permission flags rather than complex access control logic
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and power-efficient management of content access in wireless communication systems, ensuring that only authorized access is granted based on updated permission information, enhancing security and reducing power consumption.
Implementation Method 1
the update information is contained in radio waves transmitted by the second external device and the radio waves cause the antenna to generate power by electromagnetic induction, the generated power supplying power necessary to operate the second non-volatile memory and the second controller
Data Source
AI summary
A storage device includes a connection unit to which a first external device is to be connected, a first non-volatile memory in which content items are stored with associated content IDs, a first controller configured to access the content items stored in the first non-volatile memory, an antenna, a second non-volatile memory in which permission information is stored, and a second controller configured to update the permission information based on update information received from a second external device through the antenna. The update information is contained in radio waves transmitted by the second external device and the radio waves cause the antenna to generate power necessary to operate the second non-volatile memory and the second controller. In response to a read command from the first external device, the first controller performs a read of one of the content items based on the updated permission information.