Method for using multipurpose internet mail extension types for automatically detecting scalable vector graphics support in client browsers

• US 6,664,974 B2
• Filed: 12/26/2000
• Issued: 12/16/2003
• Est. Priority Date: 12/26/2000
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Lindstrom-Tamer, Ana M.
• Primary Examiner(s): Luu, Le Hien
• Application Number:
  US09/746,509
• Publication Number:
  US 20020124076A1
• Time in Patent Office: 1,085 Days
• Field of Search: 709/200, 709/218, 709/206, 715/503, 705/9, 345/619, 345/760, 345/763, 345/418, 345/636
• US Class Current: 345/619
• CPC Class Codes: G06F 16/9577 Optimising the visualization of content, e.g. distillation of HTML documents

Abstract

A method for automatically determining whether a browser supports scalable vector graphics (“SVG”). The method uses a two prong process to make a proper detection for various types of browsers. The method includes using JavaScript to detect Multipurpose Internet Mail Extensions (“MIME”) types from the browser to detect SVG support. If scanning of the MIME types detects that SVG support is present, the requested web page containing SVG content is sent. If no SVG support is detected, the non-SVG version of the web page is sent to the browser. If the browser does not return a list of MIME types, the method of Visual Basic Scripting Edition language (“VBScript”) to instruct the browser to create an SVG object on the client device. If the object is created, SVG support has been detected, and the browser is served the web page having SVG content.

Claims

1. A method for automatically detecting whether a client browser supports scalable vector graphics, comprising:

receiving a page request from said client browser for a web page potentially having scalable vector graphics content defined therein;

requesting a list of MIME types from said client browser, said client browser returning list of supported MIME types;

if said return list contains one or more supported MIME types, scanning said return list to determine whether one of said supported MIME types is an SVG MIME type; and

wherein if one of said supported MIME types is said SVG MIME type, designating said client browser as supporting scalable vector graphics; and

if said return list contains zero supported MIME types, instructing said client browser to create an SVG object; and

wherein if said browser successfully creates said SVG object, designating said client browser as supporting scalable vector graphics.

2. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, further comprising serving said web page to said client browser with said scalable vector graphics content if said client browser is designated as supporting scalable vector graphics, and serving said web page to said client browser without said scalable vector graphics content if said client browser is not designated as supporting scalable vector graphics.

3. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 2, wherein said serving of said web page comprises dynamically scripting said page using JavaServer Pages logic depending upon whether said client browser is designated as supporting scalable vector graphics.

4. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 2, further comprising serving a version of said web page without scalable vector graphics content if scalable vector graphic support is not designated, and serving a second version of said web page having scalable vector graphics content if scalable vector graphic support is designated.

5. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, wherein said requesting and scanning of said list of said supported MIME types step is performed by JavaScript.

6. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, wherein said instructing of said browser to create said SVG object is performed by VBScript.

7. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, wherein said designating of said client browser as supporting scalable vector graphics comprises an action selected from the group consisting of storing a cookie and setting a URL query parameter.

13. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, wherein said instructing of said browser to create said SVG object is performed by VBScript.

14. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 1, wherein said designating of said client browser as supporting scalable vector graphics comprises an action selected from the group consisting of storing a cookie and setting a URL query parameter.

8. A method for automatically detecting whether a client browser supports scalable vector graphics, comprising:

receiving a page request from said client browser for a web page potentially having scalable vector graphics content defined therein;

requesting a list of plug-ins from said client browser, said client browser returning list of installed plug-ins;

scanning said list of installed plug-ins for one or more predetermined SVG plug-ins, and wherein if one of said installed plug-ins is one of said predetermined SVG plug-ins, designating said client browser as supporting scalable vector graphics; and

wherein if said list of installed plug-ins does not contain at least one of said predetermined SVG plug-ins, instructing said client browser to create an SVG object; and

wherein if said browser successfully creates said SVG object, designating said client browser as supporting scalable vector graphics.

9. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 8, further comprising serving said web page to said client browser with said scalable vector graphics content if said client browser is designated as supporting scalable vector graphics, and serving said web page to said client browser without said scalable vector graphics content if said client browser is not designated as supporting scalable vector graphics.

10. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 9, wherein said serving of said web page comprises dynamically scripting said page using JavaServer Pages logic depending upon whether said client browser is designated as supporting scalable vector graphics.

11. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 9, further comprising serving a version of said web page without scalable vector graphics content if scalable vector graphic support is not designated, and serving a second version of said web page having scalable vector graphics content if scalable vector graphic support is designated.

12. The method for automatically detecting whether a client browser supports scalable vector graphics according to claim 8, where in said requesting and scanning of said list of said installed plug-ins step is performed by JavaScript.