Yunxin D Wu

US Patent:

7216133, May 8, 2007

Filed:

Jul 29, 2003

Appl. No.:

10/629254

Inventors:

Yunxin Wu - Kirkland WA, US
Shaoyu Zhou - Issaquah WA, US
Lev Novik - Bellevue WA, US
Irena Hudis - Bellevue WA, US
Ashish B. Shah - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707203, 707102, 707201

Abstract:

Systems, methods, and computer program products for synchronizing items at replicas within a topology is disclosed. Items are stored in physical tables at the replicas. The physical table layouts at each replica can differ but are mapped to a common logical view. When a replica receives an indication that synchronization should be performed, the replica determines if changes have been made at the replica that should be mapped to the logical views. Replicas can facilitate this by comparing local change enumerations for changes made in physical tables to synchronization local change enumerations for changes in the logical views. Any changes that need to be synchronized are sent through the logical views to other replicas in the topology.

US Patent:

7440981, Oct 21, 2008

Filed:

Jul 31, 2003

Appl. No.:

10/631591

Inventors:

Lev Novik - Bellevue WA, US
Irena Hudis - Bellevue WA, US
Douglas B. Terry - San Carlos CA, US
Ashish Shah - Sammamish WA, US
Sanjay Anand - Sammamish WA, US
Yunxin Wu - Kirkland WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707204, 707200, 707205

Abstract:

Systems and methods for replicating replicas in a sync community. Each replica in the sync community stores knowledge that represents changes the replica is aware of. Because each replica has its own knowledge, each replica does not need to know how many replicas are in the sync community or the topology of the sync community. By sending the knowledge with a request for changes, a replicating replica can enumerate the changes to replicate by comparing its knowledge with the received knowledge. After replication, the knowledge is updated. Knowledge may also include made-with-knowledge change IDs that permit each resolution to identify what a replica was aware of when a particular change was made. The made-with-knowledge values are used to detect conflicts during replication.

US Patent:

7440985, Oct 21, 2008

Filed:

Apr 27, 2006

Appl. No.:

11/380579

Inventors:

Lev Novik - Bellevue WA, US
Michael R. Clark - Issaquah WA, US
Yunxin Wu - Kirkland WA, US
Douglas B. Terry - San Carlos CA, US
Irena Hudis - Bellevue WA, US
Tomas Talius - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707204, 707205, 709219, 709203, 709220

Abstract:

Methods for enabling mult-master synchronization of particular sets of data using filters. In a synchronization request, data including knowledge and filters may be supplied. A response may comprise data including changes that are identified by the filter and that have versions that are not known by the requestor.

US Patent:

7568204, Jul 28, 2009

Filed:

Jun 20, 2002

Appl. No.:

10/175935

Inventors:

Irena Hudis - Bellevue WA, US
Alan Geoffrey Boshier - Redmond WA, US
Lev Novik - Bellevue WA, US
Yunxin Wu - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 9/46

US Classification:

719330, 719328, 715234, 707 1, 707100

Abstract:

A uniform data structure contains a number of data fields. Some of the data fields are dedicated to contain information concerning the transfer of a data segment of a particular type (such as an XML segment) using one particular transfer mechanism (such as transferring as a string or DOM object, or transfer using an interface such as ISAXContentHandler, ITextSource, ITextSink, or IDOMSink interfaces). Other data fields are dedicated to contain information concerning the transfer of data segments of the same particular type using another transfer mechanism. When a module is to transfer a data segment, the module will cause the unified data structure to be altered as appropriate for the desired transfer mechanism.

US Patent:

7577691, Aug 18, 2009

Filed:

Aug 2, 2006

Appl. No.:

11/498594

Inventors:

Lev Novik - Bellevue WA, US
Douglas B. Terry - San Carlos CA, US
Irena Hudis - Bellevue WA, US
Jeremie E. Sartor - Redmond WA, US
Shaoyu Zhou - Issaquah WA, US
Tomas Talius - Sammamish WA, US
Yunxin Wu - Kirkland WA, US
Jin He - Redmond WA, US
Mark Scurrell - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707204, 707 4, 707 8, 707200, 707201, 707203

Abstract:

Extending hierarchical synchronization (sync) scopes to non-hierarchical scenarios may involve a method for synchronizing differently organized data stores comprising mapping different physical organizations to similar logical organizations and utilizing an organization-based synchronization algorithm to synchronize the differently organized stores. Also, the uniqueness constraints of the organizations may be preserved as well as the parent-child ordering constraints of the organizations.

US Patent:

7620668, Nov 17, 2009

Filed:

May 6, 2005

Appl. No.:

11/124219

Inventors:

Vishal Kathuria - Woodinville WA, US
Martin J. Sleeman - Redmond WA, US
Robin Dhananjay Dhamankar - Redmond WA, US
Hanumantha Rao Kodavalla - Sammamish WA, US
Yunxin Wu - Kirkland WA, US
Shaoyu Zhou - Issaquah WA, US
Lev Novik - Bellevue WA, US
Tomas Talius - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 12/00
G06F 17/30

US Classification:

707204, 707200, 707202

Abstract:

The subject invention relates to systems and/or methods that perform an authoritative and/or a non-authoritative restore of items in a data store. Backups are provided that include data associated with items and metadata related to the items that can include a history of operations and previous synchronizations to enable replications to converge after restoration. The operations that can be performed on the items include, for example, create, delete, update, move, etc. The items in the backups can be restored along with the metadata, which can be utilized to enable synchronization partners to converge based on a desired type of restoration.

US Patent:

7636776, Dec 22, 2009

Filed:

Jul 31, 2003

Appl. No.:

10/631264

Inventors:

Ashish B. Shah - Sammamish WA, US
Lev Novik - Bellevue WA, US
Irena Hudis - Bellevue WA, US
Darshatkumar A. Shah - Bellevue WA, US
Yunxin Wu - Kirkland WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/16

US Classification:

709223, 707 1, 709219, 709221, 709224, 709220

Abstract:

Systems and methods for synchronizing data stores. A framework including a sync runtime enables consistent and manageable synchronization between a data store and multiple, diverse back end data stores. The sync runtime provides services such as change enumeration, conflict detection, metadata management, item ID matching, sync interruptability, and the like that are accessible to configurable adapters over an application programming interface. Each synchronizing data store can uses a sync controller to initialize an adapter that can access the services provided by the sync runtime. The sync controller can use a profile to configure each adapter. The profile can identify conflict resolution policies, synchronization filters, source and destination folders, sync direction, and the like.

US Patent:

7720890, May 18, 2010

Filed:

Feb 22, 2005

Appl. No.:

11/063381

Inventors:

Rajesh M. Rao - Sammamish WA, US
Okechukwu C. Echeruo - Kent WA, US
Irena Hudis - Bellevue WA, US
Lev Novik - Bellevue WA, US
Balan Sethu Raman - Redmond WA, US
Yunxin Wu - Kirkland WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707821, 707203, 707204, 709248

Abstract:

A system and method for synchronizing a database having metadata and raw data. Metadata may be fully synchronized between two systems, with copies stored on both systems. Raw data may be selectively synchronized, so that a client system need not store all of the raw data locally. When disconnected, the client system may identify certain portions of the raw data to store locally, and such data may be synchronized when reconnected to a server system.