Patent
Virtual addressing of optical storage media as magnetic tape equivalents
Richard V. Keele,Craig D. Mautner,Tracy J. Thorpe,Sidney R. Thompson,Michael C. Goodsell,Philip J. Erdelsky +5 more
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TLDR
In this article, an optical disk storage system emulates a magnetic tape subsystem by virtual addressing of data recorded on write once optical disk media having a predetermined group of available sectors for rewriting a disk ID, a predetermined plurality of bands of available sector for rewriting virtual tape directory to virtual tape VSNs, and available sectors with data portions for simulating tape marks and interblock gap and for addressing blocks of data within the virtual tapes.Abstract:
An optical disk storage system emulates a magnetic tape subsystem by virtual addressing of data recorded on write once optical disk media having a predetermined group of available sectors for rewriting a disk ID, a predetermined plurality of bands of available sectors for rewriting a virtual tape directory to virtual tape VSNs, and, available sectors for rewriting virtual tape maps and rewriting user records, the tape maps have data portions for simulating tape marks and interblock gap and for addressing blocks of data within the virtual tapes, the virtual tape directory has pointers for pointing to tape maps, and the system rewrites the tape directory, tape maps and user records so as to function as a rewritable magnetic tape.read more
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Journal ArticleDOI
The visual story of data storage: From storage properties to user interfaces.
TL;DR: In this article, the authors designed and conducted a survey to rank different storage properties adapted for visualization, such as accessibility, capacity, usage, mutability, lifespan, addressability, and typology.
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File system block sub-allocator
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Method and system for handling commands requesting movement of a data storage medium between physical media libraries
TL;DR: In this paper, the authors present a system and methods for handling commands requesting movement of a data storage medium (magnetic tape, optical disk, or other medium) from a source media library to a destination media library using a pass through port.
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Dynamic allocation of bus master control lines to peripheral devices
TL;DR: In this article, the authors propose a method of allocating bus master control lines to peripheral devices, which is based on user preferences and/or system-detected peripheral devices.
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Techniques for host to host transfer of sequential media and use of persistent reservation to protect media during host to host transfer
TL;DR: In this paper, the use of persistent reservation to protect media during host-to-host transfer of media is discussed. But the authors do not discuss how to transfer the media from a first host to a second host without physically unloading the media.
References
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Patent
Information retrieval system and method using independent user stations
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Patent
Crypto microprocessor that executes enciphered programs
TL;DR: In this article, a microprocessor for executing computer programs which are stored in cipher to prevent software piracy is proposed, which can process valuable proprietary programs and data files which are distributed in cipher on videodiscs, semiconductor memory, or other media without risk of software piracy.
Patent
Computer memory system with parallel garbage collection independent from an associated user processor
TL;DR: In this article, the reference count process includes providing for a reference count indicating the number of pointer references to a memory block (120, 121, 126-129, 122, 132, 133) in the virtual address space (Area 1, Area 2, Area 3).
Patent
Pseudo-erasable and rewritable write-once optical disk memory system
TL;DR: In this article, a write-once, read-many optical data storage system is defined, which includes an optical disk to which data is written such that a host data system having access to the optical data disk is enabled to access any one of a predetermined number of logical addresses for storing data at a selected logical address whether or not data had previously been stored at that logical address.
Patent
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