Data Deletion Control Device Source Segmentation
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Solution Overview
Problem
The existing storage device technology, as described in JP-A-2022-43511, may not appropriately determine when to delete data, leading to potential inefficiencies or inappropriate data removal.
Innovation Solution
A data deletion control device is designed with an acquisition unit to gather data from multiple source devices, a storage unit to store the data, and a deletion unit that executes deletion processing based on preset conditions. Specifically, the device allows deletion when data is acquired from a first source device but prohibits deletion when data is acquired from a second source device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If automatic deletion is performed for all acquired data regardless of source, then storage capacity is maintained, but data loss occurs from important sources
Solution Approach 1:
The patent segments the deletion control mechanism by data source, creating distinct deletion policies for first source devices (allowing deletion) and second source devices (prohibiting deletion). This segmentation resolves the contradiction by applying different deletion rules to different data sources, thereby maintaining storage capacity through selective deletion while preventing data loss from protected sources.
2Device complexity
If data from all sources is treated uniformly, then system complexity is reduced, but inappropriate deletion occurs
Solution Approach 1:
The patent applies local quality by assigning different deletion attributes to data based on its source. The deletion control unit gives different treatments to data from first source devices versus second source devices, making the deletion policy locally adapted to each source's characteristics. This ensures appropriate deletion decisions without requiring complex global analysis of all data.
Data Source
AI summary
A tablet device includes: an acquisition unit configured to acquire data from each of a plurality of source devices including a first source device and a second source device; a data storage unit configured to store the data acquired by the acquisition unit; and a deletion unit configured to execute deletion processing of deleting the data from the data storage unit in response to a preset deletion condition being satisfied when the data is acquired from the first source device, the deletion unit prohibiting execution of the deletion processing of the data when the data is acquired from the second source device.