Fang F Yu

US Patent:

8108544, Jan 31, 2012

Filed:

Dec 10, 2008

Appl. No.:

12/332008

Inventors:

Kadangode K. Ramakrishnan - Berkeley Heights NJ, US
Vijay Gopalakrishnan - Summit NJ, US
Fang Yu - Columbus OH, US

Assignee:

AT&T Intellectual Property I, LP - Reno NV

International Classification:

G06F 15/16
G06F 12/00

US Classification:

709232, 709231

Abstract:

A method of obtaining content includes receiving a playfile. The playfile includes a chunk ID corresponding to a chunk of the content, a packet ID corresponding to a packet of the chunk, and a hash of the packet. The method further includes obtaining the chunk from a peer, determining a calculated hash for the packet, and discarding the chunk when the calculated hash does not match the hash in the playfile.

US Patent:

8131660, Mar 6, 2012

Filed:

Apr 8, 2008

Appl. No.:

12/099160

Inventors:

John Davis - San Francisco CA, US
Zhangxi Tan - Albany CA, US
Fang Yu - San Jose CA, US
Lintao Zhang - Sunnyvale CA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06N 5/02

US Classification:

706 46

Abstract:

A hardware accelerator is provided for Boolean constraint propagation (BCP) using field-programmable gate arrays (FPGAs) for use in solving the Boolean satisfiability problem (SAT). An inference engine may perform implications. Block RAM (BRAM) may be used to store SAT instance information. Computation may be co-located with the BRAM memory, taking advantage of the high on-chip bandwidth and low latency of an FPGA. SAT instances may be partitioned into multiple groups that can be processed by multiple inference engines in parallel. New SAT instances can be inserted into FPGA without invoking the time-consuming FPGA re-synthesizing process.

US Patent:

8510562, Aug 13, 2013

Filed:

Mar 22, 2010

Appl. No.:

12/728910

Inventors:

Kadangode K. Ramakrishnan - Berkeley Heights NJ, US
Vijay Gopalakrishnan - Summit NJ, US
Fang Yu - Columbus OH, US
David Lee - Columbus OH, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04L 29/06

US Classification:

713171, 709201, 370230

Abstract:

A method for transferring content includes requesting the content from a serving peer and sending the content to a requesting peer. Requesting the content includes sending a request to a tracker, receiving a request token, a path identifier, and a first peer identifier from the tracker, and sending a request message to a second peer. The first peer identifier includes an identity of a first peer, and the request message includes the request token, the path identifier, and the first peer identifier. Sending the content includes receiving the request token and the path identifier from a third peer, sending a return message to a fourth peer, and transferring the content from the serving peer to the requesting peer through a transfer path. The return message includes the path identifier and a second peer identifier. The second peer identifier includes an identity of a fifth peer.

US Patent:

20100057647, Mar 4, 2010

Filed:

Sep 4, 2008

Appl. No.:

12/203948

Inventors:

John Davis - San Francisco CA, US
Zhangxi Tan - Albany CA, US
Fang Yu - Sunnyvale CA, US
Lintao Zhang - Sunnyvale CA, US

Assignee:

MICROSOFT CORPORATION - Redmond WA

International Classification:

G06F 15/18
G06N 5/04

US Classification:

706 12

Abstract:

A hardware accelerator is provided for Boolean constraint propagation (BCP) using field-programmable gate arrays (FPGAs) for use in solving the Boolean satisfiability problem (SAT). An inference engine may perform implications. Learned clauses may be generated during conflict analysis. Operations pertaining to learned clauses may include clause insertion and clause deletion (e.g., by invalidation) from a learned clause inference engine, and “garbage collection” in which unused or invalidated clauses may be removed from an inference engine.

US Patent:

20120096081, Apr 19, 2012

Filed:

Dec 21, 2011

Appl. No.:

13/333514

Inventors:

Kadangode K. Ramakrishnan - Berkeley Heights NJ, US
Vijay Gopalakrishnan - Summit NJ, US
Fang Yu - Columbus OH, US

Assignee:

AT&T INTELLECTUAL PROPERTY I, L.P. - Reno NV

International Classification:

G06F 15/16

US Classification:

709203

Abstract:

A method includes receiving at a directory server a notification from a client system, where the notification indicates that the first client received a corrupt packet of a playfile from a first peer. The method also includes determining if the first peer is a poor quality peer, updating a first peer score for the first peer if the first peer is not a poor quality peer, identifying a second peer that is not on a blacklist, and providing a peer identification associated with the second peer to the client system.

US Patent:

20130332533, Dec 12, 2013

Filed:

Aug 13, 2013

Appl. No.:

13/965547

Inventors:

Vijay Gopalakrishnan - Edison NJ, US
Fang Yu - Columbus OH, US
David Lee - Columbus OH, US

Assignee:

AT&T INTELLECTUAL PROPERTY I.L.P. - Atlanta GA

International Classification:

H04L 29/08

US Classification:

709204

Abstract:

A method for transferring content includes requesting the content from a serving peer and sending the content to a requesting peer. Requesting the content includes sending a request to a tracker, receiving a request token, a path identifier, and a first peer identifier from the tracker, and sending a request message to a second peer. The first peer identifier includes an identity of a first peer, and the request message includes the request token, the path identifier, and the first peer identifier. Sending the content includes receiving the request token and the path identifier from a third peer, sending a return message to a fourth peer, and transferring the content from the serving peer to the requesting peer through a transfer path. The return message includes the path identifier and a second peer identifier. The second peer identifier includes an identity of a fifth peer. The transfer path includes at least the second, fourth, and fifth peers.

US Patent:

20210117552, Apr 22, 2021

Filed:

Oct 19, 2020

Appl. No.:

17/074463

Inventors:

- Mountain View CA, US
Nicola Corradi - San Francisco CA, US
Fang Yu - Sunnyvale CA, US
Olivia Wang - Fremont CA, US

International Classification:

G06F 21/57
G06K 9/62

Abstract:

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for detecting suspicious accounts. One of the methods includes identifying one or more potential clusters of malicious accounts; for each cluster, processing a collection of content associated with each account of the cluster, the processing comprising applying a plurality of models in series to determine whether the collection of content indicates a common pattern; and based on the respective determinations, classifying the accounts of each cluster as ordinary or suspicious.

US Patent:

20170188111, Jun 29, 2017

Filed:

Mar 16, 2017

Appl. No.:

15/460689

Inventors:

- Atlanta GA, US
Vijay Gopalakrishnan - Edison NJ, US
Fang Yu - Columbus OH, US

Assignee:

AT&T INTELLECTUAL PROPERTY I, L.P. - Atlanta GA

International Classification:

H04N 21/63
H04N 21/643
H04N 21/8352
H04N 21/472

Abstract:

A method includes receiving at a directory server a notification from a client system, where the notification indicates that the first client received a corrupt packet of a playfile from a first peer. The method also includes determining if the first peer is a poor quality peer, updating a first peer score for the first peer if the first peer is not a poor quality peer, identifying a second peer that is not on a blacklist, and providing a peer identification associated with the second peer to the client system.