Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
1997-02-18
2001-04-03
Feild, Joseph H. (Department: 2176)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000
Reexamination Certificate
active
06212533
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a hyper-media document management system, and more particularly to a hyper-media document management system having navigation mechanism.
A hyper-media document is a document having nodes and links. The nodes indicate media data such as images, figures, texts, vocal sounds and animations. The links indicate relationship between the nodes. In the hyper-media document, mechanism of tracing between the nodes is called “navigation”. A hyper-media management system manages the navigation mechanism.
A conventional hyper-media management system has a node manager and a link manager. The node manager reads or writes a node identifier. The link manager reads or writes a link identifier. The node identifier may include node types. The link identifier may includes link types.
In the conventional hyper-media document management system, since interface between an application program and a hyper-media document is different depending on the application program, some functions must be implemented for each application program. For example, user verification function is required for multi-user environment. Moreover, distributed access function is required for referring to a node maintained by another system on the network. Since these functions are defined and implemented by each application program, it is difficult to share the hyper-media document among the application programs. For example, an evaluation scheme of an access condition defined by one application program may be different from another application program's.
SUMMARY OF THE INVENTION
In view of the foregoing problem of the conventional system, an object of the present invention is to provide virtual hyper-media documents for being shared by different application programs. The hyper-media documents are used for changing a displaying form of the hyper-media document, limiting an accessible range, and referring to a part of the document placed on the network for the navigation mechanism.
In a hyper-media document management system according to a first aspect of the present invention, a document manager manages a hyper-media document. A virtual document manager manages a virtual hyper-media document created from the hyper-media document. A navigation manager traces the hyper-media document and the virtual hyper-media document.
With the unique and unobvious structure of the present invention, the hyper-media document management system provides a virtual hyper-media documents to be shared by application programs.
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Feild Joseph H.
NEC Corporation
Sughrue Mion Zinn Macpeak & Seas, PLLC
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