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Browse Prior Art Database

Replaceable Content Classes within an Imaging System

IP.com Disclosure Number: IPCOM000106570D
Original Publication Date: 1993-Nov-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 4 page(s) / 216K

Publishing Venue

IBM

Related People

Barnhill, RS: AUTHOR [+3]

Abstract

Described is an architectural enhancement for imaging systems that provides an application interface so as to access documents. By using replaceable content classes, the enhancement provides the ability to support multiple document content architecture (DCA) within an imaging system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 26% of the total text.

Replaceable Content Classes within an Imaging System

      Described is an architectural enhancement for imaging systems
that provides an application interface so as to access documents.  By
using replaceable content classes, the enhancement provides the
ability to support multiple document content architecture (DCA)
within an imaging system.

      A primary attribute of the replaceable content classes is that
multiple content classes may be supported within a single software
system through a common architectural design.  The design allows the
subsequent addition of any other content class without the need for
additional coding by system designers.  Additional coding is required
by the implementer of the content class support, however once it is
implemented, the support is transparently integrated into the entire
system.

      Imaging systems that are designed for the manipulation of
documents require certain design criteria to determine current and
future usability as well as flexibility to meet changing
requirements.  Since document storage and retrieval procedures are a
function of the DCA, problems can arise in the balancing of the
amount of coded functions with the number of DCAs that are supported
by the system.  Once support has been integrated into the particular
system, difficulty can arise in supporting additional DCAs at a later
date.  The concept described herein deals with this problem and sets
out a flexible and easily implemented solution through the use of
replaceable content classes within the imaging system.

      A document DCA used in the imaging system specifies the
complete internal representation by specifying the storage format,
the interpretation of document page images, and the interpretation of
peripheral attributes that may be defined in conjunction with primary
page images.  The DCA defines how pages exist and how they may be
added or deleted from the original document.  The DCA can include the
provision for text outside of the stored graphical representation.
Any access of the document must be done using the appropriate DCA in
order to obtain accurate results.

      Typically, a particular DCA is selected for any software system
that involves the generation, processing or display of images.  The
interchange of document images between systems is dependent upon
implementing identical DCAs within each system.  Supporting identical
DCAs does not guarantee compatibility due to possible differences in
the types and degree of the implementation.  However, with the proper
attention to the characteristics of the specific DCA, documents can
be readily transferred between multiple systems with common DCA
support.

      The physical formatting of image data as it resides in storage,
called a content class, follows the rules as described by the
corresponding DCA.  A content class requires the appropriate software
to extract pages from a document, to insert pages into documents, and
to...