Registration Device ID Code Storage Management
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Solution Overview
Problem
Existing electronic key systems face issues with registering new ID codes when the maximum capacity is reached, as interruptions, such as power outages, can result in the loss of old ID codes during the registration process.
Innovation Solution
A registration device with n+1 ID code storage regions and a management data storage region that allows writing new ID codes to invalid regions, updating management data to validate the new ID code and invalidate other regions, ensuring that at least one region remains vacant, thus preventing data loss during interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the maximum number of ID codes is set for the storage unit and new ID codes are overwritten over old registered ID codes when the maximum is reached, then the storage capacity is efficiently utilized, but the old ID codes are deleted and erased when the overwriting is interrupted by power outages
Solution Approach 1:
The system designates one storage region as a spare region in advance, before any overwriting operation occurs. This spare region serves as a buffer to prevent data loss during interruption, allowing the system to complete the overwriting process safely without risking the loss of existing valid ID codes.
Solution Approach 2:
The management data storage region stores validity information for each ID code storage region, creating a protective layer that tracks the state of each region. This management data acts as a cushion against potential data loss by enabling the system to identify and preserve valid ID codes even when overwriting is interrupted.
2Adaptability or versatility
If the registration process overwrites old ID codes with new ID codes, then new ID codes can be registered when maximum capacity is reached, but the old ID codes cannot be recovered if the process is interrupted
Solution Approach 1:
The management data storage region acts as an intermediary between the ID code storage regions and the registration control logic. It stores validity information that mediates the overwriting process, allowing the system to safely determine which regions can be overwritten and which must be preserved, thus preventing information loss while maintaining registration capability.
Solution Approach 2:
The system performs preliminary validation checks using the management data before overwriting old ID codes. This preliminary action ensures that the overwriting process only proceeds when safe to do so, preventing the loss of old ID codes while still allowing new registrations when capacity is available.
3Quantity of substance
If all ID code storage regions are filled with valid ID codes, then the maximum number of ID codes is registered, but no spare capacity remains to handle registration interruptions safely
Solution Approach 1:
The storage unit is segmented into n ID code storage regions and 1 spare ID code storage region, with corresponding segmentation in the management data storage region. This segmentation allows the system to maintain n registered ID codes while preserving 1 region as a safety buffer, thus achieving both maximum registration capacity and registration safety.
Data Source
AI summary
A registration device includes a processor that writes an ID code to an invalid ID code storage region in accordance with management data, updates the management data after the ID code is safely written, and validates the invalid ID code storage region storing the ID code. After the ID code is written, when an ID code is stored in every one of the ID code storage regions, the processor updates the management data to invalidate the ID code storage region excluding the invalid ID code storage region storing the ID code.