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Virtual addressing of optical storage media as magnetic tape equivalents

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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.

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References
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Patent

Information retrieval system and method using independent user stations

TL;DR: An information retrieval system (10) including user stations (30) and storage units is described in this paper, where the storage units such as video disks or cassettes are stored oriented vertically in a storage rack (60).
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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.
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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).
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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.
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Optical disk storage format, method and apparatus for emulating a magnetic tape drive

TL;DR: In this article, a high-level directory is constructed providing a list of addresses for the embedded directories, which comprise a fixed maximum number of entries each indicating the length of a corresponding record.
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