Method and apparatus for accessing copies of documents using a web browser request interceptor

• US 6,105,028 A
• Filed: 06/26/1997
• Issued: 08/15/2000
• Est. Priority Date: 06/26/1997
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Company (HP Inc.)
• Original Assignee: Digital Equipment Corporation (HP Inc.)
• Inventors: Sullivan, David J., Taranto, Edward James, Gauvin, William Joseph
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): Alam, Hosain T.
• Application Number:
  US08/882,882
• Time in Patent Office: 1,146 Days
• Field of Search: 707/10, 707/501, 707/513, 707/104, 395/200.48, 395/200.47, 395/200.57, 395/200.3, 395/200.32, 395/200.49, 395/200.54, 395/200.33, 709/201, 709/203, 709/217, 709/218, 709/219, 711/126
• US Class Current: 1/1
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing

Abstract

A method and apparatus for enabling access of a document on a remote network device by a local computer includes an interceptor for intercepting a request (from a web browser on the local computer system) for accessing the document. The interceptor responsively ascertains whether the local computer is connected to a network and, if connected to the network, downloads the document into memory of the local computer system. If the local computer is not connected to the network, the method and apparatus locates the document in the local memory of the local computer. Once downloaded or located, whichever the case may be, the document may be utilized by the user, such as by displaying the document on a display device.

Claims

1. A method of accessing a copy of a document in a client computer system, the document being stored in a server remote from the client computer system, the client computer system including a web browser producing browser requests for communicating with the server over the network, the method comprising the steps of:

A. intercepting a browser request to access the document;

B. ascertaining if the client computer is connected to the network;

C. downloading, if connected to the network, the copy from the server;

D. determining, from the browser request, the address of the copy of the document in the client computer system when the client computer system is not connected to the network; and

E. retrieving, when the client computer system is not connected to the network, the copy of the document in the client computer system.

2. The method of accessing a document as defined by claim 1 further including the step of:

F. displaying the document on the client computer system.

3. The method of accessing a document as defined by claim 1 wherein the browser request includes a URL for the document, the step D of determining includes the step of:

D1. ascertaining the location of the document in the client computer system from the URL.

4. The method of accessing a document as defined by claim 1 wherein the step of ascertaining is a background process.

5. The method of accessing a document as defined by claim 1 wherein the document includes a pointer to a second document, the method further including the step of:

G. selecting the pointer; and

H. locating, responsive to step G, the second document in the client computer system.

6. The method of accessing a document as defined by claim 1 wherein the client computer system includes a local hypertext server and a local application program, the method further including the steps of:

I. executing the local application program, in response to step B of ascertaining, the local application program to produce a modified copy of the document.

7. The method of claim 1, wherein the retrieving step is only performed if the client computer system is not connected to the network.

8. An apparatus for accessing a copy of a document in a client computer system, the document being stored in a server remote from the client computer system, the client computer system including a web browser producing browser requests for communicating with the server over the network, the apparatus comprising:

means for intercepting a browser request to access the document;

means for ascertaining if the client computer is connected to the network;

means for downloading, if connected to the network, the copy from the server;

means for determining, from the browser request, the address of the copy of the document in the client computer system when the client computer system is not connected to the network; and

means for retrieving, when the client computer system is not connected to the network, the copy of the document in the client computer system.

9. The apparatus for accessing a document as defined by claim 8 further including means for displaying the document on the client computer system.

10. The apparatus for accessing a document as defined by claim 8 wherein the browser request includes a URL for the document, the determining means including:

means for ascertaining the location of the document in the client computer system from the URL.

11. The apparatus for accessing a document as defined by claim 8 wherein the steps of ascertaining means is in the background.

12. The apparatus for accessing a document as defined by claim 8 wherein the document includes a pointer to a second document, the apparatus further including:

means for selecting the pointer; and

means for locating, responsive to the selecting means, the second document in the client computer system.

13. The apparatus for accessing a document as defined by claim 8 wherein the client computer system includes a local hypertext server and a local application program, the apparatus further including:

means for executing the local application program, in response to the ascertaining means, the local application program producing a modified copy of the document.

14. A computer program product comprising:

a computer usable medium having computer readable program code thereon for accessing a copy of a document in a client computer system, the document being stored in a server remote from the client computer system, the client computer system including a web browser producing browser requests for communicating with the server over the network, the computer readable program code comprising;

program code for intercepting a browser request to access the document;

program code for ascertaining if the client computer is connected to the network;

program code for downloading, if connected to the network, the copy from the server;

program code for determining, from the browser request, the address of the copy of the document in the client computer system when the client computer system is not connected to the network; and

program code for retrieving, when the client computer system is not connected to the network, the copy of the document in the client computer system.

15. The computer program product as defined by claim 14 further including program code for displaying the document on the client computer system.

16. The computer program product as defined by claim 14 wherein the browser request includes a URL for the document, the program code for determining includes:

program code for ascertaining the location of the document in the client computer system from the URL.

17. The computer program product as defined by claim 14 wherein the program code for ascertaining utilizes a background process.

18. The computer program product as defined by claim 14 wherein the document includes a pointer to a second document, the computer program product further including:

program code for selecting the pointer; and

program code for locating, responsive to the program code for selecting the pointer, the second document in the client computer system.

19. The computer program product as defined by claim 14 wherein the client computer system includes a local hypertext server and a local application program, the computer program product further including:

program code for executing the local application program, in response to the program code for ascertaining, the local application program producing a modified copy of the document.

20. A method of accessing a document on a remote network device from a client computer system, the client computer system having a web browser and a memory, the client computer system being connectable to the remote network device by a network, the method comprising the steps of:

A. intercepting a browser request from the web browser to access the document on the remote network device;

B. ascertaining if the client is connected to the network;

C. determining from the browser request, when the client is connected to the network, the remote address of the document on the remote network device;

D. downloading a local copy of the document into the memory of the client computer system;

E. identifying a plurality of documents referenced by the downloaded document by reviewing the downloaded document for a number of pointers embedded therein that identify the documents; and

F. downloading the documents from nodes on the remote network device, the nodes being in a hierarchical tree structure with a plurality of levels, the document being on one of the nodes.

21. The method of accessing a document as defined by claim 20 further including the step of:

G. displaying the local copy on the client computer.

22. The method of accessing a document as defined by claim 20, wherein step F of downloading includes the steps of:

F1. designating the node having the document as the root node;

F2. designating a deepest node level of the tree structure, the deepest node level being the same as or below the level of the root node; and

F3. downloading, into the memory of the client computer system, documents in the nodes on levels that are between the root node and the node at the deepest node level.

23. The method of accessing a document as defined by claim 20 wherein the pointers referencing an image map file having a graphical image, each pointer having an associated document address.

24. The method of accessing a document as defined by claim 23 further including the steps of:

E. dividing the graphical image into a predetermined number of sections;

F. locating at least one of the pointers on the graphical image, each located pointer being associated with at least one of the sections; and

G. associating the document address of each located pointer with the section associated with each located pointer.

25. The method of accessing a document as defined by claim 20 wherein the network includes an update network device, the method further including the steps of:

H. downloading an update copy of the document into the memory of the update network device;

I. causing the update network device to interface with the remote network device;

J. comparing the document to the update copy; and

K. modifying, responsive to the step J of comparing, the update copy.

29. The apparatus for accessing a document as defined by claim 25 wherein the pointers referencing an image map file having a graphical image, each pointer having an associated document address.

30. The apparatus for accessing a document as defined by claim 29 further including:

means for dividing the graphical image into a predetermined number of sections;

means for locating at least one of the plurality of pointers on the graphical image, each located pointer being associated with at least one of the sections; and

means for associating the document address of each located pointer with the section associated with each located pointer.

31. The apparatus for accessing a document as defined by claim 25 wherein the network includes an update network device, the apparatus further including:

means for downloading an update copy of the document into the memory of the update network device;

means for causing the update network device to interface with the remote network device;

means for comparing the document to the update copy; and

means, responsive to the comparing means, for modifying the update copy.

26. An apparatus for accessing a document on a remote network device from a client computer system, the client computer system having a web browser and a memory, the client computer system being connectable to the remote network device by a network, the apparatus comprising:

means for intercepting a browser request from the web browser to access the document on the remote network device;

means for ascertaining if the client is connected to the network;

means for determining from the browser request, responsive to the ascertaining means, the remote address of the document on the remote network device;

means for downloading a local copy of the document into the memory of the client computer system;

means for identifying a plurality of documents referenced by the downloaded document by reviewing the downloaded document for a number of pointers embedded therein that identify the documents; and

means for downloading the documents from nodes on the remote network device, the nodes being in a hierarchical tree structure with a plurality of levels, the document being on one of the nodes.

27. The apparatus for accessing a document as defined by claim 26 further including:

means for displaying the local copy on the client computer.

28. The apparatus for accessing a document as defined by claim 26 wherein the means for downloading includes:

means for designating the node having the document as the root node;

means for designating a deepest node level of the tree structure, the deepest node level being the same as or below the level of the root node; and

means for downloading, into the memory of the client computer system, documents in the nodes on levels that are between the root node and the node at the deepest node level.

32. A computer program product for use with a local computer system, the computer program product accessing a document on a remote network device from a client computer system, the client computer system having a web browser and a memory, the client computer system being connectable to the remote network device by a network, the computer program product comprising a computer usable medium having computer readable program code thereon, the computer readable program code including:

program code for intercepting a browser request from the web browser to access the document on the remote network device;

program code for ascertaining if the client is connected to the network;

program code for determining from the browser request, responsive to the program code for ascertaining, the remote address of the document on the remote network device;

program code for downloading a local copy of the document into the memory of the client computer system;

program code for identifying a plurality of documents referenced by the downloaded document by reviewing the downloaded document for a number of pointers embedded therein that identify the documents; and

program code for downloading the documents from nodes on the remote network device, the nodes being in a hierarchical tree structure with a plurality of levels, the document being on one of the nodes.

33. The computer program product as defined by claim 32 further including:

program code for displaying the local copy on the client computer.

34. The computer program product as defined by claim 32, wherein the program code for downloading includes:

program code for designating the node having the document as the root node;

program code for designating a deepest node level of the tree structure, the deepest node level being the same as or below the level of the root node; and

program code for downloading, into the memory of the local computer system, documents in the nodes on levels that are between the root node and the node at the deepest node level.

35. The computer program product as defined by claim 32 wherein the pointers referencing an image map file having a graphical image, each pointer having an associated document address.

36. The computer program product as defined by claim 35 further including:

program code for dividing the graphical image into a predetermined number of sections;

program code for locating at least one of the plurality of pointers on the graphical image, each located pointer being associated with at least one of the sections; and

program code for associating the document address of each located pointer with the section associated with each located pointer.

37. The computer program product as defined by claim 32 wherein the network includes an update network device, the computer program product further including:

program code for downloading an update copy of the document into the memory of the update network device;

program code for causing the update network device to interface with the remote network device;

program code for comparing the document to the update copy; and

program code for modifying, responsive to the program code of comparing, the update copy.

38. A method for a client computer system accessing documents stored on a remote server, the client computer system including a web browser producing browser requests for communicating with the server over a network, the method comprising the steps of:

A. a user of the client computer system submitting a first browser request over the network for a copy of a first document;

B. intercepting the first browser request and, in response thereto, performing steps comprising (1) downloading a copy of the first document from the server to the client computer system, and (2) determining from the downloaded copy of the first document whether the first document includes a pointer to a second document and, if so, using the pointer to determine the address of the second document, and using the second document address in downloading a copy of the second document from the server to the client computer system; and

C. storing the copies of the first and second documents in the client computer system.

39. The method in accordance with claim 38, further including the steps of:

A. a user of the client computer system submitting a second browser request over the network for a copy of at least one of said first and second documents; and

B. intercepting the second browser request and, in response thereto, obtaining a copy of the at least one document from one of the server and the client computer system.

40. The method in accordance with claim 39, further including the steps of:

A. ascertaining if the client computer is connected to the network; and

B. if the client computer system is connected to the network, downloading a copy of the at least one document from the network.

41. The method as defined by claim 38, wherein the second browser request contains a request for a copy of the first document, and the method further includes the step of locating the second document in the client computer system responsive to the pointer in the first document.

42. The method as defined by claim 38, wherein the second browser request contains a request for a copy of the second document.

43. An apparatus for accessing a plurality of documents by a client computer system, the documents being stored in a server remote from the client computer system, the client computer system including a web browser producing browser requests for communicating with the server over a network, the apparatus comprising:

A. means, responsive to a user, for submitting a first browser request over the network for a copy of a first document;

B. an interceptor for intercepting the first browser request, said interceptor including (1) means for downloading a copy of the first document from the server to the client computer system, and (2) means for determining from the downloaded copy of the first document whether the first document includes a pointer to a second document and, if so, using the pointer to determine the address of the second document, and using the second document address in downloading a copy of the second document from the server to the client computer system; and

C. means for storing the copies of the first and second documents in the client computer system.

44. The apparatus in accordance with claim 43, further including:

A. means responsive to a user of the client computer system, for submitting a second browser request over the network for a copy of at least one of said first and second documents; and

B. means for intercepting the second browser request and, in response thereto, obtaining a copy of the at least one document from one of the server and the client computer system.

45. The apparatus in accordance with claim 44, further including:

A. means for ascertaining if the client computer is connected to the network; and

B. means responsive to the ascertaining means for downloading, if the client computer system is connected to the network, a copy of the at least one document from the network.

46. The method as defined by claim 43, wherein the second browser request contains a request for a copy of the first document, and the apparatus further includes means for locating the second document in the client computer system responsive to the pointer in the first document.

47. The method as defined by claim 43, wherein the second browser request contains a request for a copy of the second document.

48. A computer program product for accessing a plurality of documents by a client computer system, the documents being stored in a server remote from the client computer system, the client computer system including a web browser producing browser requests for communicating with the server over a network, the product comprising a computer usable medium and computer readable program code stored on the computer usable medium, said program code including:

A. program code for submitting, responsive to a user, a first browser request over the network for a copy of a first document;

B. program code for intercepting the first browser request, the intercepting program code including (1) code for downloading a copy of the first document from the server to the client computer system, and (2) code for determining from the downloaded copy of the first document whether the first document includes a pointer to a second document and, if so, using the pointer to determine the address of the second document, and using the second document address in downloading a copy of the second document from the server to the client computer system; and

C. program code for storing the copies of the first and second documents in the client computer system.

49. The computer program product in accordance with claim 48, wherein the program code further comprises:

A. program code responsive to a user of the client computer system, for submitting a second browser request over the network for a copy of at least one of said first and second documents; and

B. program code for intercepting the second browser request and, in response thereto, obtaining a copy of the at least one document from one of the server and the client computer system.

50. The computer program product in accordance with claim 48, wherein the program code further comprises:

A. program code for ascertaining if the client computer is connected to the network; and

B. program code, responsive to the ascertaining program code, for downloading, if the client computer system is connected to the network, a copy of the at least one document from the network.

51. The computer program product in accordance with claim 48, wherein the second browser request contains a request for a copy of the first document, and wherein the program code further comprises program code for locating the second document in the client computer system responsive to the pointer in the first document.

52. The computer program product in accordance with claim 48, wherein the second browser request contains a request for a copy of the second document.