Zheng Li

US Patent:

7965681, Jun 21, 2011

Filed:

May 16, 2008

Appl. No.:

12/152771

Inventors:

Jan Erik Johan Berglund - Cupertino CA, US
Zheng Li - San Jose CA, US
Kevin Tang - Dublin CA, US

Assignee:

Nokia Siemens Networks Oy - Espoo

International Classification:

H04W 4/00

US Classification:

370329

Abstract:

A method includes receiving at a gateway mesh node a channel set list indicating radio channels that are allowed for use by the gateway mesh node, scanning channels in the channel set list and creating a list of channels in order of interference that is present, allocating channels from the list of channels to a plurality of radios that comprise the gateway mesh node, and initiating transmission of beacon frames from each of the plurality of radios on a main channel. Each beacon frame includes information descriptive of a path cost representing a sum of all link costs back to a central point, a primary radio channel used by the radio transmitting the beacon frame, a channel set indicating only those channels that an associated portion of the mesh network is allowed to use, and a set of meshed nodes associated with the radio.

US Patent:

8422513, Apr 16, 2013

Filed:

May 23, 2008

Appl. No.:

12/154493

Inventors:

Jan Erik Johan Berglund - Cupertino CA, US
Zheng Li - San Jose CA, US

Assignee:

Nokia Siemens Networks Oy - Espoo

International Classification:

H04L 12/56

US Classification:

370466, 370393

Abstract:

A method includes receiving a first frame at a wireless access node, the first frame being received through a first communication network and having a source address; applying a function (e. g. , a hash function) to the source address to derive a destination address; encapsulating the first frame in a second frame that includes the destination address and a source address identifying the wireless access node; and sending the second frame to a second communication network for receipt by a destination node having the destination address. The destination node is an access controller that maintains state for a station that sends the first frame. The first communication network may be an IEEE 802. 11 network, and the second communication network may be an IEEE 802. 3 network. The address of the access controller is one of potentially many virtual MAC addresses associated with the access controller that enables an N:M relationship between a particular access node and a plurality of access controllers that may be clustered, and a N:1 relationship between a Station and a virtual access controller.

US Patent:

20050130170, Jun 16, 2005

Filed:

Dec 16, 2003

Appl. No.:

10/737082

Inventors:

Jeanne Harvey - Livermore CA, US
Chris Beard - Concord CA, US
Chris Burgess - Westwood MA, US
Allison Gannon - Walnut Creek CA, US
John Lechner - Richmond CA, US
Zheng Li - Hayward CA, US

International Classification:

C12Q001/68

US Classification:

435006000

Abstract:

The present invention relates to methods for identifying among the genes that are down-regulated in cells or tissues having disease including cancer, the CpG sites within the CpG islands of said genes, wherein the identified CpG sites show great potential for diagnostic utility. In another aspect, the present invention also provides methods of using the selected CpG sites for purposes of diagnosis, prognosis, staging, assessing or monitoring the therapy of or recovery from a disease such as cancer.

US Patent:

20050214812, Sep 29, 2005

Filed:

Jun 7, 2005

Appl. No.:

11/010980

Inventors:

Zheng Li - Hayward CA, US
Jeanne Harvey - Livermore CA, US

International Classification:

C12Q001/68
C12P019/34

US Classification:

435006000, 435091200

Abstract:

The present invention relates to detecting the relative methylation levels at one or more CpG sites on a nucleic acid molecule, by using the methylation specific primer extension reaction (MSPE). MSPE uses an agent to modify unmethylated cytosine at a CpG site to uracil and subsequently amplify the chemically treated nucleic acids. The MSPE primers distinguishing between unmethylated and methylated CpG sites are provided to conduct MSPE. Relative methylation levels at one or more CpG sites are performed by detecting the signal intensity of labels incorporated into the MSPE reaction products.

US Patent:

20090082214, Mar 26, 2009

Filed:

Dec 21, 2007

Appl. No.:

11/963725

Inventors:

Zhiping Liu - Mountain View CA, US
Zheng Li - Hayward CA, US

Assignee:

Apollo Biotechnology, Inc. - Mountain View CA

International Classification:

C40B 30/04
C40B 40/06
C40B 50/00
C40B 40/12

US Classification:

506 9, 506 16, 506 19, 506 23

Abstract:

This invention relates to conjugate probes and optical detection of analytes. More specifically, this invention relates to conjugate probes which are used to form an array for a biosensor employing optical detection of analytes.

US Patent:

20120202714, Aug 9, 2012

Filed:

Apr 19, 2012

Appl. No.:

13/451325

Inventors:

Zhiping Liu - Mountain View CA, US
Zheng Li - Hayward CA, US

International Classification:

C40B 40/12
C08B 37/00

US Classification:

506 19, 5361231

Abstract:

This invention relates to conjugate probes and optical detection of analytes. More specifically, this invention relates to conjugate probes which are used to form an array for a biosensor employing optical detection of analytes.

US Patent:

20120256609, Oct 11, 2012

Filed:

Apr 7, 2011

Appl. No.:

13/082138

Inventors:

Tawen Mei - Sunnyvale CA, US
Zheng Li - San Jose CA, US

International Classification:

G05F 1/10
H03F 3/45

US Classification:

323282, 330260

Abstract:

An error amplifier includes a first amplification circuit with a reference signal input and a feedback signal input representing the amplitude of a load voltage of a switched mode power supply. The error amplifier includes a difference amplifier providing a difference signal representing a difference between the reference signal and the feedback signal, provided for determining the duty cycle of a switching signal in the switched mode power supply. The first amplification circuit further includes a control circuit providing a control signal generated as a function of the difference between the reference signal and the feedback signal.The error amplifier also includes a second amplification circuit, included in a compensation circuit. The second amplification circuit receives the control signal, and the operating current of the second amplification circuit is adjusted by an amount indicated by the control signal.

US Patent:

20120280669, Nov 8, 2012

Filed:

May 2, 2011

Appl. No.:

13/099021

Inventors:

Zheng Li - San Jose CA, US
Tawen Mei - Sunnyvale CA, US

International Classification:

G05F 1/00
H03F 3/45

US Classification:

323284, 330260

Abstract:

An error amplifier includes a difference amplifier providing an error signal representing a difference in voltage between a feedback signal and a reference signal. The error amplifier further includes a compensation circuit limiting the rate of change of the error signal. The compensation circuit includes a switch that when activated effectively removes a circuit portion from the compensation circuit. A switch signal indicates for the switch to be activated when the feedback signal exceeds the reference signal by a predefined amount.The compensation circuit may further include a second switch that when activated effectively removes a second circuit portion from the compensation circuit. A second switch signal indicates for the second switch to be activated when the feedback signal exceeds the reference signal by a second predefined amount.