Method and system to handle inclusion of external files into a d

Details Method and system to handle inclusion of external files into a d Method and system to handle inclusion of external files into a d

1992-04-30

1994-06-28

Shaw, Dale M.

395101, G06F 1520

Patent

active

053254848

ABSTRACT:
An apparatus for controlling printing or display of documents represented in a structured hierarchal page description language. Documents are provided as a document data stream which can include references to external references and external data declarations which can be incorporated into the document by the content processor. Documents are defined by a prologue section which may contain definitions and declaratory commands, with content portions containing specific tokens or command for specific images. The document data stream has a hierarchal structure. A means to provide external declarations is provided which will process external declarations as if the external declaration which can be stored on a separate device were part of the original document data structure. The storage of the references to the external declarations is accomplished in a tree linked stack structure with a last in first out arrangement which allows for a faster search order of external declarations. The tree linked stack structure further allows for the correct external declaration to be associated with a given reference thereto, even if different external declarations within the document data stream might have the same name. The context of the document data stream and the level in which a call is made determines the exact external declaration which is being referenced. This provides an incorporation by reference ability to a document data stream.

REFERENCES:
patent: 4649513 (1987-03-01), Martin et al.
patent: 4870611 (1989-09-01), Martin et al.
"InterPress, The Source Book" by Harrington et al (Simon and Schuster, Inc., 1988).
"PostScript Language Reference Manual", Addison-Wesley Publishing Co. Second Edition, 1991.
ISO/IEC DIS 10180, Information Processing-Text Communication-Standard Page Description Language; Draft International Standard 1991-03, 1991.

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