Electronic document distribution network with uniform data stream
Electronic document distribution network with dynamic document interchange protocol generation
Method and apparatus for assisting user of information retrieval systems
Image information display system for displaying a plurality of image information pieces with a directed display state
Method of editing and circulating an electronic draft document amongst reviewing persons at remote terminals attached to a local area network
Method and apparatus for producing an abstract of a document
Method for associating annotation with electronically published material
System and method for editing a structured document to preserve the intended appearance of document elements
System and method for editing a structured document to modify emphasis characteristics, including emphasis menu feature
Electronic document approval system
ApplicationNo. 926346 filed on 09/09/1997
US Classes:715/513, Structured document (e.g., HTML, SGML, ODA, CDA)707/10, Distributed or remote access707/104.1, Application of database or data structure (e.g., distributed, multimedia, image)707/200, FILE OR DATABASE MAINTENANCE715/527, Print preview715/911Document page description processing
ExaminersPrimary: Black, Thomas G.
Assistant: Homere, Jean R.
Attorney, Agent or Firm
International ClassG06F 017/00
AbstractA method and apparatus for providing an optimized page-based electronic document file and downloading the optimized file. An optimized document file is created from a non-optimized electronic document. Page contents are contiguously written in the optimized file and a page offset table is provided in the optimized file that includes page offset information used to locate individual pages and objects of the document. Shared objects, such as fonts, are included in the file after the page contents. When downloading the optimized file from a host, the page offset information is read early and is used to download a specific page requested by the user without downloading other pages in the document. In one embodiment, a viewer downloads a first portion of the requested page, while all remaining portions of the requested page are located and requested by a finder process using the page offset table. In alternative embodiments, all objects for a full page may be requested at once. The requested page can thus be downloaded with only one connection to the host. Shared objects can optionally be downloaded interleaved between portions of the page contents that reference the shared objects. Alternatively, with the use of hint tables, shared and other objects can be read in one transaction identifying byte ranges in the document. The requested page is displayed to the user on an output display device. The order elements are displayed provides quick access to useful information and to active elements.