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IP.com Disclosure Number: IPCOM000116385D
Original Publication Date: 1995-Sep-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Halbert, AR: AUTHOR

Abstract

In a large company using computer systems to provide office facilities, large documents are sometimes circulated in softcopy form to interested parties. A typical practice is to send files as printer-ready copy. These documents are read-only, in the sense that they are either used in their original form, or discarded; the user would have no desire to alter any data within the file containing the document.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 67% of the total text.

Document Repository

      In a large company using computer systems to provide office
facilities, large documents are sometimes circulated in softcopy form
to interested parties.  A typical practice is to send files as
printer-ready copy.  These documents are read-only, in the sense that
they are either used in their original form, or discarded; the user
would have no desire to alter any data within the file containing the
document.

      Recipients tend to store such documents on disk space which
they "own", in case they should need to print a copy at a later date
(or send it to another user).  Thus it is possible that large numbers
of copies of the same document can reside in many places on disk
storage on a given computer system.  This can be extremely costly in
physical space allocated to disk drives, as well as disk space.

      The solution creates a repository for central storage of large
documents, such that each unique document is stored exactly once.
Techniques for keeping track of rights to access to documents in such
a repository are well-known.  However the determination of uniqueness
is a key requirement in this context.

      Two documents are equivalent if and only if the data comprising
the first can be transformed into the data comprising the second by a
public process (such as compaction).  (Inessentials such as document
name - which can be altered by the user - or file datestamp - which
can be affected by file copying or transmis...