Lei Zheng

US Patent:

7347237, Mar 25, 2008

Filed:

Feb 28, 2006

Appl. No.:

11/364162

Inventors:

Feng Anne Xie - San Jose CA, US
Lei Zheng - Apex NC, US
Eric Sean Castner - Uniontown OH, US

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

B60C 5/00

US Classification:

1522091, 152450

Abstract:

This invention relates to a tread rubber composition for tires with the addition of crosslinked resinous nanoparticles having a high glass transition temperature (T) into elastomeric base polymers. The invention demonstrates greatly improved handling performance without deteriorating controllability and stability during high-speed running. The present invention more specifically discloses a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads; wherein said tread is adapted to be ground-contacting; and wherein the tread is comprised of a rubber composition comprising: (1) a rubbery polymer; (2) from 1 to 30 parts per hundred parts of rubber by weight of pre-crosslinked polymer particles, wherein the pre-crosslinked polymer particles have a mean number average particle size as determined by light scattering which is within the range of 30 nm to 500 nm, wherein the pre-crosslinked polymer is comprised of repeat units that are derived from at least one monomer selected from the group consisting of acrylate monomers, acrylonitrile monomer, and vinyl halide monomers, wherein the pre-croslinked polymer is in the form of core-shell particles having a core and a shell, and wherein the pre-crosslinked polymer has a glass transition temperature which is within the range of 30 C. to 200 C. ; and (3) 10 to 150 parts per hundred parts of rubber by weight of at least one filler selected from the group consisting of carbon black and silica.

US Patent:

8255280, Aug 28, 2012

Filed:

Sep 27, 2011

Appl. No.:

13/246650

Inventors:

Erik Kay - Belmont CA, US
Aaron Boodman - San Francisco CA, US
Lei Zheng - Saratoga CA, US
Michael Noth - Bothell WA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

G06Q 30/00

US Classification:

705 26, 705 27

Abstract:

A computer-implemented method includes providing an online marketplace to developers of web applications that may be downloaded from the marketplace to a client computing device for execution by a browser executing on the client device and receiving a request from a party to the marketplace to list a proposed web application for sale in the marketplace. One or more processors of a computer system automatically determine the permissions requested by the proposed web application and automatically determine if the permissions match one or more predetermined permissions. If the permissions match one or more predetermined permissions, then the proposed application is flagged for a manual vetting process before listing the proposed application in the marketplace, and if they do not match, then the proposed application is listed in the marketplace without manual review of the application.

US Patent:

8364766, Jan 29, 2013

Filed:

Dec 4, 2008

Appl. No.:

12/328723

Inventors:

Lei Zheng - Sunnyvale CA, US
Sharat Narayan - Sunnyvale CA, US
Mark E. Risher - San Francisco CA, US
Stanley Ke Wei - Palo Alto CA, US
Vishwanath Tumkur Ramarao - Sunnyvale CA, US
Anirban Kundu - San Francisco CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 15/16

US Classification:

709206, 709224, 704 2, 382124

Abstract:

Embodiments are directed towards classifying messages as spam using a two phased approach. The first phase employs a statistical classifier to classify messages based on message content. The second phase targets specific message types to capture dynamic characteristics of the messages and identify spam messages using a token frequency based approach. A client component receives messages and sends them to the statistical classifier, which determines a probability that a message belongs to a particular type of class. The statistical classifier further provides other information about a message, including, a token list, and token thresholds. The message class, token list, and thresholds are provided to the second phase where a number of spam tokens in a given message for a given message class are determined. Based on the threshold, the client component then determines whether the message is spam or non-spam.

US Patent:

20100076922, Mar 25, 2010

Filed:

Sep 17, 2009

Appl. No.:

12/561875

Inventors:

Bhasker Hariharan - Sunnyvale CA, US
Naveen Jamal - San Jose CA, US
Anirban Kundu - San Francisco CA, US
Vishwanath Tumkur Ramarao - Sunnyvale CA, US
Mark E. Risher - San Francisco CA, US
Xiaopeng Xi - Sunnyvale CA, US
Lei Zheng - Sunnyvale CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 21/00
G06N 7/02
G06F 15/16

US Classification:

706 52, 726 27, 709206

Abstract:

The invention provides for at least three processes for detecting the probability of abusive use of a message account for sending large amounts of unsolicited messages, such as spam, to other message accounts. For example, information provided at registration for a new message account can be processed to determine the likelihood of abusive use of that message account. Also, inbound messages can be processed to determine if the message account that sent the inbound message is abusing the use of that message account. Additionally, outbound messages can be processed to determine if the message account that is attempting to send an outbound message is abusing the use of that message account. Each of these three processes can operate separately or in any combination with each other to further improve the probability that abusive use of a message account will be detected promptly and accurately.

US Patent:

20100077040, Mar 25, 2010

Filed:

Sep 17, 2009

Appl. No.:

12/561940

Inventors:

Bhasker Hariharan - Sunnyvale CA, US
Naveen Jamal - San Jose CA, US
Anirban Kundu - San Francisco CA, US
Vishwanath Tumkur Ramarao - Sunnyvale CA, US
Mark E. Risher - San Francisco CA, US
Xiaopeng Xi - Sunnyvale CA, US
Lei Zheng - Sunnyvale CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 15/16

US Classification:

709206

Abstract:

The invention provides for at least three processes for detecting the probability of abusive use of a message account for sending large amounts of unsolicited messages, such as spam, to other message accounts. For example, information provided at registration for a new message account can be processed to determine the likelihood of abusive use of that message account. Also, inbound messages can be processed to determine if the message account that sent the inbound message is abusing the use of that message account. Additionally, outbound messages can be processed to determine if the message account that is attempting to send an outbound message is abusing the use of that message account. Each of these three processes can operate separately or in any combination with each other to further improve the probability that abusive use of a message account will be detected promptly and accurately.

US Patent:

20100195974, Aug 5, 2010

Filed:

Feb 4, 2009

Appl. No.:

12/365722

Inventors:

Lei Zheng - Saratoga CA, US
Christopher Dylan Bentzel - Quincy MA, US
Kyle Kakligian - Sunnyvale CA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

H04N 5/91
H04N 7/173

US Classification:

386 68, 725105, 386E05001

Abstract:

A system and method provide server side support for seamless, scalable rewind and playback of a video stream. A video stream is stored and indexed in a network storage place. A video stream can be indexed at frame level where each intra frame of the video stream has an index indicating the file offset and the time stamp of the intra frame in the video stream. A user request for rewinding of a video stream while the video stream is being broadcast is processed by extracting the rewinding time requirement from the user request. The extracted rewinding time value is used to calculate the requested file offset. The video stream starting at the requested time is retrieved and played back according to the user request. The system also provides server side support for seamless rewinding of a video stream and scalable system performance across multiple streaming data centers.

US Patent:

20140040170, Feb 6, 2014

Filed:

Aug 1, 2012

Appl. No.:

13/564378

Inventors:

Lei Zheng - Sunnyvale CA, US
Phil Y. Yang - Sunnyvale CA, US
Shyam Mittur - San Ramon CA, US
Prashant Vyas - San Jose CA, US
Savitha Perumal - Sunnyvale CA, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 15/18

US Classification:

706 12

Abstract:

Disclosed is a system and method for processing account registration by identifying account candidates attempting to open an account as abusive. That is, the present disclosure discusses identifying, and challenging and marking abusive account registration. The present disclosure takes into account users' behaviors on a network and the impact to the cost and/or revenue of the network. The present disclosure is proactive as it allows for actions to be taken at the earliest possible time in the registration process before an account is created. This prevents abusive activity from taking place within the network and effecting services and privileges available to legitimate users. Additionally, the effects of the disclosed systems and methods minimize the negative impacts of abusive activity on normal user accounts.

US Patent:

20180091840, Mar 29, 2018

Filed:

Dec 4, 2017

Appl. No.:

15/830452

Inventors:

- Palo Alto CA, US
Lei Zheng - Saratoga CA, US

International Classification:

H04N 21/2668
H04N 21/81
H04N 21/45
H04N 21/234
H04N 21/8547

Abstract:

A computer implemented method enables presenting interesting and informative preview video of a video content item in a digital magazine. The method comprises steps of receiving a video content item from a content provider, e.g., a 2-minute video advertisement for a car from an advertiser, and analyzing the video content item. The video content item is segmented into multiple segments based on the analysis, e.g., scene changes detected with the video frames of the video content item. One or more segments are selected, e.g., based on their associated visual quality, and are combined to generate a preview video, e.g., a 10-second long video highlighting new features of the car. One or more transition segments can be added between segments to enhance user experience with the preview video. The preview video is provided to a client device for display and auto playback.