Displaying electronic documents with substitute fonts

• US 6,073,148 A
• Filed: 11/10/1998
• Issued: 06/06/2000
• Est. Priority Date: 09/25/1995
• Status: Expired due to Term

• Current Assignee: Adobe Systems Incorporated (Adobe Inc.)
• Original Assignee: Adobe Systems Incorporated (Adobe Inc.)
• Inventors: Priyadarshan, Eswar, Cohn, Richard, Rowe, Edward R., Taft, Edward A., Anderson, Kenneth S., Al-Shamma, Nabeel A., McQuarrie, Elizabeth M.
• Primary Examiner(s): HOMERE, JEAN RAYMOND
• Application Number:
  US09/189,481
• Time in Patent Office: 574 Days
• Field of Search: 707/102, 707/542, 707/526, 707/516, 345/471, 345/195
• US Class Current: 715/205
• CPC Class Codes: G06F 40/103 Formatting, i.e. changing of presentation of documents automatic justification G06F40/189; automatic line break hyphenation G06F40/191
• CPC Class Codes: G06F 40/109 Font handling; Temporal or kinetic typography
• CPC Class Codes: G06F 40/123 Storage facilities
• CPC Class Codes: G06F 40/131 Fragmentation of text files, e.g. creating reusable text-blocks; Linking to fragments, e.g. using XInclude; Namespaces
• CPC Class Codes: G06F 40/14 Tree-structured documents parsing G06F40/205; validation G06F40/226
• CPC Class Codes: G06F 40/149 Adaptation of the text data for streaming purposes, e.g. Efficient XML Interchange [EXI] format
• CPC Class Codes: G06F 40/151 Transformation
• CPC Class Codes: G06F 40/154 Tree transformation for tree-structured or markup documents, e.g. XSLT, XSL-FO or stylesheets
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing

Abstract

Methods and apparatus for displaying an electronic document on a display device coupled to a computer. The document includes text specified to be drawn using a desired font that is not on the computer. The methods and apparatus display the text and a region including the text initially using a substitute font different from the desired font; obtain the desired font from a source coupled to the computer for data transmission; and then redisplay the text and the region using the desired font. Aspects include the following features. The document has font description metrics for the desired font. The methods and apparatus read the font description metrics from the document before initially displaying the text; and use the font description metrics for the desired font to create the substitute font. The computer has font description metrics for the desired font, and the methods and apparatus use the font description metrics for the desired font to create the substitute font. The methods and apparatus adopt a font from a font resource on a local data store as the substitute font. The desired font is a font embedded in the document. The desired font is identified in the document; and obtaining the desired font includes obtaining the desired font from a font server.

Claims

1. A method for displaying on a display device coupled to a computer an electronic document having text specified to be drawn using a desired font that is not on the computer, the method comprising:

initially displaying the text and a region including the text using a substitute font different from the desired font;

obtaining the desired font from a source coupled to the computer for data transmission; and

then

redisplaying the text and the region using the desired font.

2. The method of claim 1, wherein the document has font description metrics for the desired font, the method further comprising:

reading the font description metrics from the document before initially displaying the text; and

using the font description metrics for the desired font to create the substitute font.

3. The method of claim 1, wherein the computer has font description metrics for the desired font, the method further comprising:

using the font description metrics for the desired font to create the substitute font.

4. The method of claim 1, further comprising:

adopting a font from a font resource on a local data store as the substitute font.

5. The method of claim 1, wherein the desired font is a font embedded in the document.

6. The method of claim 1, wherein:

the desired font is identified in the document; and

the step of obtaining the desired font comprises obtaining the desired font from a font server.

7. Apparatus comprising a computer-readable storage medium tangibly embodying computer program instructions for displaying on a display device coupled to a computer an electronic document having text specified to be drawn using a desired font that is not on the computer, comprising instructions to:

display the text and a region including the text initially using a substitute font different from the desired font;

obtain the desired font from a source coupled to the computer for data transmission; and

then

redisplay the text and the region using the desired font.

8. The apparatus of claim 7, further comprising instructions to:

read the font description metrics from the document before initially displaying the text; and

use the font description metrics for the desired font to create the substitute font.

9. The apparatus of claim 7, wherein the computer has font description metrics for the desired font, the apparatus further comprising instructions to use the font description metrics for the desired font to create the substitute font.

10. The apparatus of claim 7, further comprising instructions to:

adopt a font from a font resource on a local data store as the substitute font.

11. The apparatus of claim 7, wherein the desired font is a font embedded in the document.

12. The apparatus of claim 7, wherein:

the desired font is identified in the document; and

the step of obtaining the desired font comprises obtaining the desired font from a font server.