Object identification and data communication during an object synchronization process

• US 6,442,570 B1
• Filed: 06/04/1999
• Issued: 08/27/2002
• Est. Priority Date: 10/27/1997
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Wu, Charles
• Primary Examiner(s): Mizrahi, Diane D.
• Assistant Examiner(s): Veillard, Jacques
• Application Number:
  US09/326,754
• Time in Patent Office: 1,180 Days
• Field of Search: 707/10, 707/201, 707/103, 709/248, 709/101, 709/106, 709/219
• US Class Current: 707/621
• CPC Class Codes: G06F 16/2308 Concurrency control transaction processing G06F9/466
• CPC Class Codes: G06F 16/273 Asynchronous replication or reconciliation
• CPC Class Codes: Y10S 707/922 Communications
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users

Abstract

A synchronization system synchronizes objects between a portable computer and a desktop computer. Prior to synchronization, the system selects objects to be synchronized between the two computers. A synchronization manager in the portable computer calls an object identification function which identifies a volume that is accessible to the portable computer. The object identification function also identifies objects that are associated with the identified volume and that have been modified since previously synchronizing the identified volume. The object identification function then identifies the identified objects to the synchronization manager, which is able to synchronize the identified objects between the portable computer and the desktop computer. The identification of objects is performed for each accessible volume in the portable computer. The system also provides for the communication of arbitrary data between the portable computer and the desktop computer during a synchronization process. The desktop computer requests communication of a particular set of data between the two computers. The particular set of data is not associated with the pre-defined data exchanged during the synchronization process. The set of data is then communicated between the two computers as requested during the synchronization process.

Claims

1. A method of selecting objects to be synchronized between a first device and a second device, the method comprising:

calling an object identification function from a synchronization manager in the first device;

in response to being called, the object identification function identifying a first volume that is accessible to the first device and identifying objects associated with the first volume that have been modified since previously synchronizing the first volume; and

the object identification function identifying the identified objects to the synchronization manager, wherein the synchronization manager is configured to synchronize the identified objects between the first device and the second device.

2. The method as recited in claim 1, wherein the synchronization manager does not identify the first volume to the object identification function.

3. The method as recited in claim 1, wherein the method is performed for each volume that is currently accessible to the first device.

4. The method as recited in claim 1, wherein the object identification function also returns a volume ID.

5. The method as recited in claim 1, wherein the method is performed for each volume that is currently accessible to the first device, wherein the object identification function further identifies a next volume in the first device.

6. The method as recited in claim 1, wherein the objects are databases.

7. The method as recited in claim 1, wherein the first device is a portable computing device.

8. The method as recited in claim 1, wherein the second device is a desktop computer.

9. The method as recited in claim 1, further comprising calling the object identification function a second time to identify additional volumes that are accessible to the first device.

10. The method as recited in claim 1, further comprising:

calling a data communication function to request communication of a particular set of data between the first device and the second device, wherein the particular set of data is not associated with any pre-defined data exchanged during a synchronization process; and

in response to being called, the data communication function communicating the particular set of data between the first device and the second device.

11. One or more computer-readable memories containing a computer program that is executable by a processor to perform the method recited in claim 1.

12. A method of communicating data between a portable computer and a desktop computer during a synchronization process, wherein the synchronization process causes the exchange of pre-defined data between the portable computer and the desktop computer, the method comprising:

calling a data communication function to request communication of a particular set of data between the portable computer and the desktop computer, wherein the particular set of data is not associated with the pre-defined data exchanged during the synchronization process; and

in response to being called, the data communication function communicating the particular set of data between the portable computer and the desktop computer.

13. The method as recited in claim 12, wherein the step of calling a data communication function is performed by the desktop computer.

14. The method as recited in claim 12, wherein the call to the data communication function includes a parameter that indicates whether the particular set of data is to be communicated from the desktop computer to the portable computer or from the portable computer to the desktop computer.

15. The method as recited in claim 12, further comprising:

calling an object identification function from a synchronization manager in the portable computer;

in response to being called, the object identification function identifying objects that have been modified since a previous synchronization cycle; and

the object identification function identifying the identified objects to the synchronization manager.

16. One or more computer-readable memories containing a computer program that is executable by a processor to perform the method recited in claim 12.

17. One or more computer-readable media having stored thereon a

computer program comprising the following steps:

receiving a request to identify objects that have been modified since a previous object synchronization process, wherein the request is generated by a synchronization manager;

identifying objects that have been modified since a previous object synchronization process; and

identifying the identified objects to the synchronization manager, wherein the synchronization manager is configured to synchronize the identified objects between a first device and a second device.

18. One or more computer-readable media as recited in claim 17, wherein the objects are stored on a plurality of volumes in the first device, and wherein the steps are performed for each volume that is currently accessible to the first device.

19. One or more computer-readable media as recited in claim 17, wherein the step of identifying objects that have been modified since a previous synchronization process further comprises identifying a volume associated with the identified objects.

20. One or more computer-readable media as recited in claim 17, wherein the synchronization manager does not identify the location of the objects to be identified.

21. One or more computer-readable media as recited in claim 17, further comprising receiving a second request to identify objects, wherein the second request to identify objects identifies additional volumes that are accessible to the first device.

22. One or more computer-readable media as recited in claim 17, further comprising identifying a volume ID to the synchronization manager.

23. One or more computer-readable media as recited in claim 17, further

requesting communication of a particular set of data between the first device and the second device, wherein the particular set of data is not associated with any pre-defined data exchange during a synchronization process; and

communicating the particular set of data between the first device and the second device.

24. An apparatus comprising:

a communications interface;

a synchronization manager coupled to the communications interface, wherein the synchronization manager is configured to synchronize e objects between the apparatus and a computing device; and

an application synchronization module having a function that is callable by where synchronization manager, wherein the application synchronization module responds by identifying objects that have been modified since a previous synchronization process, and wherein the application synchronization module is further configured to identify the identified objects to the synchronization manager.

25. An apparatus as recited in claim 24, wherein the apparatus is a portable computing device.

26. The apparatus as recited in claim 24, wherein the computing device is a desktop computer.

27. The apparatus as recited in claim 24, wherein the function also returns a volume ID.

28. The apparatus as recited in claim 24, further comprising:

calling a data communication function to request communication of a particular set of data between a first device and a second device, wherein the particular set of data is not associated with any pre-defined data exchanged during a synchronization process; and

in response to being called, the data communication function communicating the particular set of data between the first device and the second device.

29. One or more computer-readable media having stored thereon a computer program comprising the following steps:

accepting a function call that activates an associated function;

returning a set of parameters, the set of parameters comprising;

an indicator of whether additional volumes remain to be analyzed for objects that require synchronization;

an indicator of the type of object being identified;

a pointer to a list of object IDs stored on a particular volume;

an indicator of which objects in the list of object IDs have changed since previously synchronizing the particular volume;

an indicator of a volume ID of the particular volume; and

a pointer to the particular volume.

30. One or more computer-readable media having stored thereon a computer program comprising the following steps:

accepting a set of parameters, the set of parameters comprising;

a direction indicator indicating whether data is to be communicated from a first device to a second device or from the second device to the first device;

an indicator of the type of data to be communicated between the first device and the second device;

a pointer identifying the beginning of the data to be communicated; and

an indicator of the number of bytes of data to be communicated

returning the identified data to the first device or the second device depending on the direction indicator.