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System and method for document processing

  • US 5,353,388 A
  • Filed: 10/17/1991
  • Issued: 10/04/1994
  • Est. Priority Date: 10/17/1991
  • Status: Expired due to Term
First Claim
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1. A method of printing a document, the steps of the method comprising:

  • receiving a document represented by a stream of page description language elements which define said document as a hierarchical tree structure, said received document including a hierarchically ordered set of prologue sections containing prologue elements and content sections containing image defining token elements;

    wherein said prologue elements in each of said prologue sections are applicable only to those of said content sections subtended by said prologue section in the document'"'"'s hierarchical tree structure;

    converting image defining token elements in said content sections of said received document into corresponding imaging instructions for a predefined remotely located printer device;

    decoding said prologue elements and storing representations thereof in a computer memory so that stored representations of only those prologue elements applicable to each content section of said document are utilized by said converting step while converting image defining token elements in each of said content sections of said document;

    generating a required resource list representing a set of resources which are required for said remotely located printer device to print said received document when said received document to be transmitted to said remotely located printer device is represented by high level page description language commands;

    querying said remotely located printer device to determine whether said remotely located printer device has resources corresponding to those represented by said required resource list;

    transmitting said imaging instructions to said remotely located printer device using high level page description language commands, after said querying step, when said remotely located printer device responds affirmatively to said querying; and

    converting said imaging instructions into an image bit representation and then transmitting said image bit representation to said remotely located printer device, after said querying step, when said remotely located printer device does not respond affirmatively to said querying.

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