Library Control Device Slot Rewriting for Accurate Media Extraction
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Solution Overview
Problem
In library devices, operators face challenges in accurately extracting erroneous record media from slots without mistakenly moving other media, leading to potential errors during the extraction and inventory processes.
Innovation Solution
A library control device and method that includes a storage unit for correlating record media with slot identifications, a movement instruction component to move media to the drive, and a slot rewrite part to ensure accurate relocation of erroneous media to a predetermined slot, thereby preventing mistakes during extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an operator manually extracts erroneous record media from slots, then the media can be removed, but the operator may mistakenly extract record media from wrong slots or input wrong commands
Solution Approach 1:
The system automatically identifies and moves erroneous record media to a predetermined slot without requiring operator intervention for slot selection. The library control device autonomously performs the extraction process by rewriting slot identifications and commanding the accessor to move the media, eliminating manual errors while maintaining operational simplicity.
Solution Approach 2:
The library control device acts as an intermediary between the operator's extraction request and the physical movement of media. It manages the slot identification rewriting process and coordinates the accessor's movements, ensuring accurate extraction without requiring the operator to directly handle slot manipulations.
2Loss of time
If a magazine allows part of slots to be pulled out for inventory, then inventory operation time is reduced, but the system cannot automatically track which slots contain erroneous media
Solution Approach 1:
The library control device performs preliminary tracking of record media locations and maintains updated slot identification information before inventory operations are needed. By pre-establishing the correlation between media and slots in the storage unit, the system enables rapid error identification without requiring comprehensive inventory checks when errors occur.
Solution Approach 2:
The system implements feedback mechanisms where the library control device continuously monitors and updates slot identification information as media is moved or extracted. This feedback loop ensures that the storage unit maintains accurate real-time information about media locations, enabling quick identification of erroneous media without time-consuming inventory operations.
Data Source
AI summary
A library control device moves a desired record medium from a magazine, which is configured to load a plurality of record media into a plurality of slots, to a drive so as to read or write data. The library control device stores identifications of record media in correlation with slots loading recording media. Upon detecting a malfunction in reading or writing data with a record medium, an operator needs to extract the record medium from the magazine. At this time, the library control device rewrites the identification of a slot, which is stored in correlation with the record medium subjected to extraction, with the identification of a predetermined slot so as to move the record medium to the predetermined slot. Thus, it is possible for an operator to extract the record medium detecting a malfunction from the predetermined slot without making any mistake.