Document transcoding system and method for mobile stations and wireless infrastructure employing the same

• US 6,611,358 B1
• Filed: 06/17/1997
• Issued: 08/26/2003
• Est. Priority Date: 06/17/1997
• Status: Expired due to Fees

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Narayanaswamy, Shankar
• Primary Examiner(s): Nguyen, Madeleine
• Assistant Examiner(s): Pokrzywa, Joseph R.
• Application Number:
  US08/877,454
• Time in Patent Office: 2,261 Days
• Field of Search: 358/442, 358/443, 358/444, 358/445, 358/434, 358/435, 358/436, 358/437, 358/438, 358/439, 358/402, 358/403, 358/407, 395/109, 395/200.58, 395/200.67, 395/200.76, 370/401, 455/435, 345/601, 345/602, 345/691, 345/696, 345/698, 345/699, 345/746, 345/788, 345/789, 345/864, 345/866, 379/100.09, 379/100.12, 379/100.13
• US Class Current: 358/442
• CPC Class Codes: H04N 1/33307 prior to start of transmission, input or output of the picture signal only
• CPC Class Codes: H04N 2201/33378 Type or format of data, e.g. colour or B/W, halftone or binary, computer image file or facsimile data

Abstract

A system and method for transcoding a document to be transmitted to a mobile station according to document display capabilities thereof and a wireless infrastructure containing the same. The system includes: (1) a station identifying circuit that receives data indicating a particular mobile station'"'"'s document display capabilities and (2) a transcoding circuit that modifies the document according to the document display capabilities before the document is transmitted to the particular mobile station, the particular mobile station thereby freed of having locally to substantially modify the document according to the document display capabilities.

Claims

1. A system for transcoding a document to be transmitted to a mobile station of a user according to document display capabilities thereof, said system comprising:

a station identifying circuit that receives, without intervention from said user, said document display capabilities directly from said mobile station; and

a transcoding circuit that modifies said document as a function of said document display capabilities and rearranges a temporal order of transmission of said document before said document is transmitted to said particular mobile station, whereby said particular mobile station is freed from having locally to substantially modify said document according to said document display capabilities, wherein said rearranging of said temporal order of transmission includes rearranging based on related elements of said document.

2. The system as recited in claim 1 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

3. The system as recited in claim 1 wherein said transcoding circuit modifies said document requested by said mobile station.

4. The system as recited in claim 1 further comprising a user capability that defines a subset of said document display capabilities.

5. A system for transcoding a document to be transmitted to a mobile station of a user according to document display capabilities thereof, said system comprising:

a station identifying circuit that receives, without intervention from said user, said document display capabilities directly from said mobile station; and

a transcoding circuit that modifies said document as a finction of said document display capabilities and divides said document into pages before said document is transmitted to said particular mobile station, whereby said particular mobile station requests at least one of said pages to be transmitted and is freed from having locally to substantially modify said document according to said document display capabilities.

6. The system as recited in claim 5 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

7. The system as recited in claim 5 wherein said transcoding circuit modifies said document requested by said mobile station.

8. The system as recited in claim 5 further comprising a user capability that defines a subset of said document display capabilities.

9. A system for transcoding a document containing control codes to be transmitted to a mobile station of a user according to document display capabilities thereof, said system comprising:

a station identifying circuit that receives, without intervention from said user, said document display capabilities directly from said mobile station; and

a transcoding circuit that modifies said document as a function of said document display capabilities and said control codes before said document is transmitted to said particular mobile station, whereby said particular mobile station is freed from having locally to substantially modify said document according to said document display capabilities, wherein said control codes define types of modifications to be performed on said document.

10. The system as recited in claim 9 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

11. The system as recited in claim 9 wherein said transcoding circuit modifies said document requested by said mobile station.

12. The system as recited in claim 9 further comprising a user capability that defines a subset of said document display capabilities.

13. A method of transcoding a document to be transmitted to a mobile station of a user according to document display capabilities thereof, said method comprising:

receiving, without intervention from said user, said document display capabilities directly from said mobile station;

modifying said document as a function of said document display capabilities before said document is transmitted to said particular mobile station thereby yielding a modified document; and

rearranging a temporal order of transmission of said modified document before said document is transmitted to said particular mobile station, whereby said particular mobile station is freed from having locally to substantially modify said document according to said document display capabilities, wherein said rearranging of said temporal order of transmission includes rearranging based on related elements of said document.

14. The method as recited in claim 13 wherein said step of modifying further comprises one step selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

15. The method as recited in claim 13 wherein said steps of receiving and modifying are performed by executing a sequence of software instructions in a computer system associated with a base station.

16. The method as recited in claim 13 wherein said step of modifying said document requested by said mobile station.

17. The method as recited in claim 13 further comprising defining a subset of said document display capabilities.

18. A method of transcoding a document to be transmitted to a mobile station of a user according to document display capabilities thereof, said method comprising:

receiving, without intervention from said user, said document display capabilities directly from said mobile station; and

modifying said document as a function of said document display capabilities by dividing said document into pages corresponding in size to said display before said document is transmitted to said particular mobile station, whereby said particular mobile station requests;

at least one of said pages to be transmitted and is freed from having locally to substantially modify said document according to said document display capabilities.

19. The method as recited in claim 18 wherein said step of modifying further comprises one step selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

20. The method as recited in claim 18 wherein said steps of receiving and modifying are performed by executing a sequence of software instructions in a computer system associated with a base station.

21. The method as recited in claim 18 wherein said step of modifying said document requested by said mobile station.

22. The method as recited in claim 18 further comprising defining a subset of said document display capabilities.

23. A method of transcoding a document containing control codes to be transmitted to a mobile station of a user according to document display capabilities thereof, said method comprising:

receiving, without intervention from said user, said document display capabilities directly from said mobile station; and

modifying said document as a function of said document display capabilities and said control codes before said document is transmitted to said particular mobile station, whereby said particular mobile station is freed from having locally to substantially modify said document according to said document display capabilities, wherein said control codes define types of modifications to be performed on said document.

24. The method as recited in claim 23 wherein said step of modifying further comprises one step selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

25. The method as recited in claim 23 wherein said steps of receiving and modifying are performed by executing a sequence of software instructions in a computer system associated with a base station.

26. The method as recited in claim 23 wherein said step of modifying said document requested by said mobile station.

27. The method as recited in claim 23 further comprising defining a subset of said document display capabilities.

28. A wireless infrastructure, comprising:

a plurality of mobile stations each associated with a user and having a document display, each said document display has varying document display capabilities;

a plurality of base stations, intercoupled together and selectively couplable to said plurality of mobile stations to allow communication of documents thereamong, each of said base stations including a system that transcodes documents to be transmitted to mobile stations coupled thereto in response to said varying document display capabilities thereof, said system including;

a station identifying circuit that receives, without intervention from said user, said varying document display capabilities directly from said plurality of mobile stations; and

a transcoding circuit that modifies said documents as a function of said document display capabilities and rearranges a temporal order of transmission of said document before said documents are transmitted to said mobile stations, whereby said mobile stations are freed from having locally to substantially modify said documents, wherein said rearranging of said temporal order of transmission includes rearranging based on related elements of said document.

29. The infrastructure recited in claim 28 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

30. The infrastructure as recited in claim 28 wherein said transcoding circuit modifies said document requested by said plurality of mobile stations.

31. The infrastructure as recited in claim 28 further comprising a user capability that defines a subset of said document display capabilities.

32. A wireless infrastructure, comprising,

a plurality of mobile stations each associated with a user and having a document display, each said document display has varying document display capabilities;

a plurality of base stations, intercoupled together and selectively couplable to said plurality of mobile stations to allow communication of documents thereamong, each of said base stations including a system that transcodes documents to be transmitted to mobile stations coupled thereto in response to said varying document display capabilities thereof, said system including;

a station identifying circuit that receives, without intervention from said user, said varying document display capabilities directly from said plurality of mobile stations; and

a transcoding circuit that modifies said documents as a function of said document display capabilities and divides said documents into pages before said documents are transmitted to said mobile stations, whereby said mobile stations request at least one of said pages to be transmitted and are freed from having locally to substantially modify said documents.

33. The infrastructure recited in claim 32 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

34. The infrastructure as recited in claim 32 wherein said transcoding circuit modifies said document requested by said plurality of mobile stations.

35. The infrastructure as recited in claim 32 further comprising a user capability that defines a subset of said document display capabilities.

36. A wireless infrastructure, comprising:

a plurality of mobile stations each associated with a user and having a document display, each said document display has varying document display capabilities;

a plurality of base stations, intercoupled together and selectively couplable to said plurality of mobile stations to allow communication of documents thereamong, each of said base stations including a system that transcodes documents containing control codes to be transmitted to mobile stations coupled thereto in response to said varying document display capabilities thereof, said system including;

a station identifying circuit that receives, without intervention from said user, said varying document display capabilities directly from said plurality of mobile stations; and

a transcoding circuit that modifies said documents as a function of said document display capabilities and said control codes before said documents are transmitted to said mobile stations, whereby said mobile stations are freed from having locally to substantially modify said documents, wherein said control codes define types of modifications to be performed on said document.

37. The infrastructure recited in claim 36 wherein said transcoding circuit performs one selected from the group consisting of:

translating said document from a first display format to a second display format, only when said document display capabilities include a capability of displaying said document in said second display format;

translating said document from a graphics-based format to a text-based format, only when said document display capabilities include only a capability of displaying said text-based format; and

modifying an attribute of said document.

38. The infrastructure as recited in claim 36 wherein said transcoding circuit modifies said document requested by said plurality of mobile stations.

39. The infrastructure as recited in claim 36 further comprising a user capability that defines a subset of said document display capabilities.