Method and apparatus for DOM filtering in UAProf or CC/PP profiles

• US 20040254905A1
• Filed: 05/28/2002
• Published: 12/16/2004
• Est. Priority Date: 05/28/2002
• Status: Active Grant

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Tiku, Siddharth
• Granted Patent: US 7,305,626 B2
• Time in Patent Office: Days
• US Class Current: 706/55
• CPC Class Codes: G06F 16/957 Browsing optimisation, e.g. caching or content distillation

Abstract

A method by which an application (22a 21a) on an origin server (22), or any other intermediary entity in an end-to-end network architecture connecting a client device (20) to a content provider entity, provides content to the client device (20) adapted to the client device (20) based on profile information regarding the client device (20), characterized by: the application (22a 21a) providing a request (M3′ M3″) for the profile information and including in the request profile-reducing information for indicating only a subset of all the profile information; and a filter (22b′ 21c) parsing the profile information based on the profile-reducing information, so as to provide as a response (M6′ M6″) the indicated subset of all the profile information. The invention provides a document object module (DOM) filtering language (DFL) and corresponding application DFL parser (22b′ 21c) for determining the reduced profile information, given an indication of what profile information is needed by the application (22a 21a).

Claims

1. A method by which an application (22a 21a) hosted by an entity responsible for content adaptation, adapts content requested by a client device (20) so as to be suitable for display by the client device (20) based on profile information regarding the client device (20), characterized by:

the application (22a 21a) providing a request (M3′

M3″

) for the profile information and including in the request profile-reducing information for indicating a subset of the profile information; and

a filter (22b′

21c) parsing the profile information based on the profile-reducing information, so as to provide as a response (M6′

M6″

) the indicated subset of all the profile information.

2. A method as in claim 1, wherein the filter (22b′

) is based on an extensible markup language (XML) parser enhanced to respond to an XML-based filtering language having a syntax and semantics suitable for indicating instructions to the enhanced XML parser in parsing the profile information based on the profile-reducing information.

3. A method as in claim 1, wherein the application (22a) and the filter (22b′

) are both hosted by an origin server (22).

4. A method as in claim 1, wherein the application (21a) and the filter (21c) are both hosted by an element (22) of a network.

9. An origin server (22), including an application (22a) and also including an application filter (22b′

) operative as the application (22a) and application filter (22b′

) of claim 1, respectively.

10. A network (21) including an application (21a) having content adaptation functionality, the network (21) also including a filter (21c), wherein the application (21a) and the filter (21c) are operative as the application (21a) and the filter (21c) of claim 1, respectively.

11. A system, including a client device (20) and including an origin server (22) that in turn includes an application (22a) and a filter (22b′

), and also including a network (21) for connecting the client device (20) to the origin server (22), wherein the application (22a) and the filter (22b′

) are operative as the application (22a) and the filter (22b′

) of claim 1, respectively.

12. A system, including a network (21) that in turn includes an application (21a) and a filter (21c), and also including a client device (20) in communication with the network (21), wherein the application (21a) and the filter (21c) are operative as the application (21a) and the filter (21c) of claim 1, respectively.

5. A method by which an application (22a 21a) responsible for content adaptation, adapts content requested by a client device (20) so as to be suitable for display by the client device (20), the adapting being based on profile information regarding the client device (20), characterized by the application (22a 21a) communicating to a filter (22b′

21c) profile-reducing information according to a language based on an extensible markup language (XML) and having a syntax and semantics suitable for indicating instructions to the filter (22b′

21c) in parsing the profile information based on the profile-reducing information so as to make accessible to the application (22a 21a) a subset of the profile information including substantially only the profile information needed by the application (22a 21a) to adapt the content being provided to the client (20).

6. A method by which an entity (21a 22a) communicates signals bearing profile-reducing information indicating a subset of all profile information characterizing a device (20), the method characterized in that the profile-reducing information is expressed according to a filtering language based on an extensible markup language (XML) and having a syntax and grammar suitable for indicating how to filter all the profile information characterizing the device (20) so as to obtain the subset of all the profile information characterizing the device (20).

7. The method of claim 6, wherein the filtering language comprises elements and associated attributes and possible child elements, and wherein the possible child elements are for indicating syntax rules for the filtering language, and further wherein the grammar of the filtering language is the grammar for XML.

8. The method of claim 6, wherein the profile information is provided as an XML document and wherein the response (M6′

M6″

) indicating a subset of all the profile information is provided as an output object, and further wherein the filtering language includes the elements and attributes set out in the following table;