Rui Liang

US Patent:

6766418, Jul 20, 2004

Filed:

Apr 30, 2001

Appl. No.:

09/845385

Inventors:

Jeffrey L. Alexander - Watertown MA
Paul M. Bober - Lexington MA
Rui Liang - Framingham MA

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 1200

US Classification:

711129, 711119, 711 3, 711 4

Abstract:

Mechanisms and techniques disclose a system that provides access to data using a two part cache. The system receives a data access request containing a first data reference, such as an open systems request to access data. The system then obtains a history cache entry from a history cache based on the first data reference and obtains a partition cache entry from a partition cache based on the first data reference. Cache entries contain mappings between open systems reference locations and non-open systems references to locations in the data to be accessed. The system then performs a data access operation as specified by the data access request using a second data reference based upon either the history cache entry or the partition cache entry. Upon performance of the data access operation, the system then updates the history and partition caches with new cache entries and can resize the partition and history caches as needed.

US Patent:

6889292, May 3, 2005

Filed:

Jun 24, 2004

Appl. No.:

10/875466

Inventors:

Jeffrey L. Alexander - Watertown MA, US
Paul M. Bober - Lexington MA, US
Rui Liang - Framingham MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F012/00

US Classification:

711129, 711 3, 711 4, 711 19

Abstract:

Mechanisms and techniques disclose a system that provides access to data using a two part cache. The system receives a data access request containing a first data reference, such as an open systems request to access data. The system then obtains a history cache entry from a history cache based on the first data reference and obtains a partition cache entry from a partition cache based on the first data reference. Cache entries contain mappings between open systems reference locations and non-open systems references to locations in the data to be accessed. The system then performs a data access operation as specified by the data access request using a second data reference based upon either the history cache entry or the partition cache entry. Upon performance of the data access operation, the system then updates the history and partition caches with new cache entries and can resize the partition and history caches as needed.

US Patent:

7412496, Aug 12, 2008

Filed:

Aug 22, 2003

Appl. No.:

10/645976

Inventors:

Stephen A Fridella - Newton MA, US
Gang Ma - Shrewsbury MA, US
Xiaoye Jiang - Shrewsbury MA, US
Sorin Faibish - Newton MA, US
Rui Liang - Natick MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 15/16
G06F 15/173

US Classification:

709219, 709203, 709217, 709225, 709229

Abstract:

To permit multiple unsynchronized processors to update the file-modification time attribute of a file during concurrent asynchronous writes to the file, a primary processor having a clock manages access to metadata of the file. A number of secondary processors service client request for access to the file. Each secondary processor has a timer. When the primary processor grants a range lock upon the file to a secondary, it returns its clock time (m). Upon receipt, the secondary starts a local timer (t). When the secondary modifies the file data, it determines a file-modification time that is a function of the clock time and the timer interval, such as a sum (m+t). When the secondary receives an updated file-modification time (mp) from the primary, if mp>m+t, then the secondary updates the clock time (m) to (mp) and resets its local timer.

US Patent:

7953819, May 31, 2011

Filed:

Aug 22, 2003

Appl. No.:

10/646851

Inventors:

Rui Liang - Natick MA, US
Jiannan Zheng - Ashland MA, US
Mark K Ku - Braintree MA, US
Xiaoye Jiang - Shrewsbury MA, US
Sorin Faibish - Newton MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 15/16
G06F 7/00
G06F 17/00

US Classification:

709219, 709230, 709233, 707610

Abstract:

A storage object such as a virtual disk drive or a raw logical volume is contained in a UNIX compatible file so that the file containing the storage object can be exported using the NFS or CIFS protocol and shared among UNIX and MS Windows clients or servers. The storage object can be replicated and backed up using conventional file replication and backup facilities without disruption of client access to the storage object. For client access to data of the storage object, a software driver accesses the file containing the storage object. For example, a software driver called a virtual SCSI termination is used to access a file containing a virtual SCSI disk drive. Standard storage services use the SCSI over IP protocol to access the virtual SCSI termination. An IP replication or snapshot copy facility may access the file containing the virtual SCSI disk drive using a higher-level protocol.

US Patent:

8490119, Jul 16, 2013

Filed:

Dec 14, 2010

Appl. No.:

12/967770

Inventors:

Yiu-Ming Leung - Kirkland WA, US
Rui Liang - Sammamish WA, US
Yu Shao - Bellevue WA, US
Marcelo Farjalla - Seattle WA, US
Li Zhang - Sammamish WA, US
Danilo Perez Solano - Redmond WA, US
Sergei Osobov - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 3/00

US Classification:

719328

Abstract:

Software applications are enabled with multimodal communication capabilities and features associated with enhanced communication systems through a communication application programming interface (API). Applications for document processing, scheduling, audio/video data processing, and/or business operations can exchange communication system data and parameters bi-directionally with components of an enhanced communication system, initiate communication sessions through the application's user interface, and preserve post-communication updates.

US Patent:

8572710, Oct 29, 2013

Filed:

Mar 18, 2010

Appl. No.:

12/726779

Inventors:

Ranjith Narayanan - Bellevue WA, US
Rui Liang - Sammamish WA, US
Srivatsa Srinivasan - Renton WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04L 29/06

US Classification:

726 9, 713159, 713172, 709225, 709229

Abstract:

A pluggable token provider model for message level authentication across multiple web services is provided. Web service and token provider implementations within a client application are separated from an actual component that operates the business logic to formulate and understand a web request. The web service components may request web services to be executed and supply the body for the web service message while a common framework maintains the web services metadata, which includes definitions associated with respective tokens. The framework may further maintain token provider implementations that actually fetch authentication tokens and perform the web requests.

US Patent:

8577895, Nov 5, 2013

Filed:

Mar 19, 2010

Appl. No.:

12/727959

Inventors:

Amit Gupta - Bellevue WA, US
Amritansh Raghav - Seattle WA, US
Cindy Kwan - Bellevue WA, US
Dejun Zhou - Seattle WA, US
Rui Liang - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/30

US Classification:

707748, 707804, 707752

Abstract:

Contacts lists are dynamically managed in association with communication and collaboration applications and devices. Automated and user defined factors are determined based on information from various resources such as user profile, contact information, past communication information, application/device types, and comparable ones. Factors may be weighted and employed to prioritize contacts lists under different circumstances. Prioritized contacts lists may be provided to a user, stored, updated, or otherwise processed.

US Patent:

20060064405, Mar 23, 2006

Filed:

Sep 21, 2004

Appl. No.:

10/945611

Inventors:

Xiaoye Jiang - Shrewsbury MA, US
Uday Gupta - Westford MA, US
Sorin Faibish - Newton MA, US
Rui Liang - Natick MA, US

International Classification:

G06F 17/30

US Classification:

707003000

Abstract:

A network file server has storage for storing a file system, and a computer programmed for access to the file system in accordance with a file access protocol and in accordance with a storage access protocol. The computer receives a file access request from a network client for access to a file in the file system in accordance with the network file access protocol. The computer decides whether it should finish the file access using the file access protocol or the client should finish the file access using the storage access protocol. Upon deciding that the client should finish the file access using the storage access protocol, the computer returns to the client metadata of the file including metadata specifying addresses of logical blocks of storage allocated to the file, and then the computer responds to storage access requests from the client by performing read-write access to the file.