Jian H Li

6362684, Mar 26, 2002

Feb 17, 2000

09/506180

Hans W. Klein - Danville CA
Jian Li - Portland OR
Yaohua Yang - West Linn OR

Lattice Semiconductor Corporation - Hillsboro OR

H03G 310

330 86, 330282

Provided is an amplifier circuit and method of using the same that features an adjustable resistor network to enable varying the operational characteristics of an amplifier. The resistor network includes primary resistors connected in series with a plurality of adjustment resistors connected to the output of an operational amplifier. A switching network is connected between the resistor network and the input of the operational amplifier. The switching network enables selectively varying the input and feedback resistance of the amplifier circuit to obtain a desired differential gain, while minimizing common-mode gain.

7276914, Oct 2, 2007

Jan 31, 2006

11/307287

Jian Li - Newark CA, US

University of Delaware - Newark DE

G01R 31/11
G01R 31/08

324534, 324527, 324555

A system for detecting a defect or discontinuity in media or at an interface of the media includes a signal generator; a transmission path coupled to the signal generator, wherein the transmission path is arranged along or through the media; a detection circuit for detecting a transmitted and a detected portion of a signal provided by the signal generator; and a circuit for analyzing the reflected portion and identifying a location of a discontinuity or defect in the media. A related method of detecting a defect or discontinuity in media or at an interface between the media includes establishing an electromagnetic energy path along or through the media; coupling electromagnetic energy into the path; detecting a reflected portion of the electromagnetic energy; and analyzing the detected portion so as to determine a position of the defect or discontinuity.

7483430, Jan 27, 2009

Feb 28, 2003

10/377841

Felix Yuan - Fremont CA, US
Jian Li - Fremont CA, US

Cisco Technology, Inc. - San Jose CA

H04L 12/28

3703952, 370255, 711213, 711216

A method for performing a lookup to support forwarding of IP packets in a router comprising a network processor and a route processor is disclosed. The method includes receiving a packet having an IP address containing a network prefix and dividing available network prefixes into groups. The longest prefix is identified and a lookup is performed using hash tables. The packet is forwarded if a match is found.

7912691, Mar 22, 2011

May 11, 2007

11/803010

Canhui Ou - Danville CA, US
Steven Gemelos - Cupertino CA, US
Jian Li - Sunnyvale CA, US
Howard S. Mountford - Danville CA, US

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

G06F 17/50

703 13

A distributed network including at least two Reconfigurable Optical Add/Drop Multiplexers (ROADMs) may be designed by a method including simulating routing of data traffic in a distributed network. The method may also include identifying a first location for placement of a first ROADM based at least partially on the simulated routing of the data traffic. The method may also include simulating rerouting of data traffic in the distributed network including the first ROADM at the first location. The method may further include identifying a second location for placement of a second ROADM based at least partially on the simulated rerouting of the data traffic.

7921212, Apr 5, 2011

Oct 14, 2008

12/251130

Jian Li - San Ramon CA, US
Raghvendra Savoor - Walnut Creek CA, US
Zhi Li - Martinez CA, US

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

G06F 15/173

709226, 709223, 709224

Example methods and apparatus to allocate bandwidth between video and non-video services in access networks are disclosed. An example system comprises a customer-premises device, a digital subscriber line access multiplexer (DSLAM) to transmit to the customer-premises device a signal having a non-video portion and a video portion, a usage monitor at the customer-premises device to monitor a usage of the video portion and to send a parameter representative of the usage of the video portion to the DSLAM, and a policy manager at the DSLAM to adjust at the DSLAM a bandwidth allocation between the video portion and the non-video portion based on the parameter.

7941778, May 10, 2011

Nov 15, 2007

11/940842

Canhui Ou - Danville CA, US
Jian Li - Sunnyvale CA, US
Steven Gemelos - Cupertino CA, US
Howard Scott Mountford - Danville CA, US
Brent Edward Jacobson - Chino Hills CA, US
Thomas Cronin - Danville CA, US
Jerold Daizo Osato - Pinole CA, US

AT&T Intellectual Property I, LP - Reno NV

G06F 17/50
H04J 14/00
H04B 10/20

716126, 398 57, 398 58

A network is represented using a graph. The graph comprises a plurality of vertices and a plurality of edges. The vertices comprise a source vertex, a destination vertex and a vertex u. The edges link corresponding adjacent pairs of the vertices. A minimum cost path in the graph is determined from the source vertex to the destination vertex, wherein the vertex u is in the minimum cost path. An edge from the vertex u in the minimum cost path introduces an additional capital expenditure cost that is dependent on how the minimum cost path traverses from the source vertex to the vertex u.

8091109, Jan 3, 2012

Dec 18, 2007

11/958525

Jian Li - San Ramon CA, US
Zhi Li - Martinez CA, US
Sun-Uk Park - Union City CA, US

AT&T Intellectual Property I, LP - Atlanta GA

H04N 7/173

725 94, 725 93, 725 95, 725 96

A method for redirecting video content includes receiving a video signal at the set-top box and decoding the video signal to produce unrendered video data. The unrendered video data is encoded and provided to the remote device via a wide area network. By encoding unrendered, rather than rendered, video data for transmission to the remote device, the need for an encoding device external to the set-top box is obviated.

8190763, May 29, 2012

Jan 10, 2008

11/972370

Raghvendra Savoor - Walnut Creek CA, US
Zhi Li - Martinez CA, US
Jian Li - San Ramon CA, US
Arvind Ramdas Mallya - Walnut Creek CA, US

AT&T Intellectual Property I, LP - Atlanta GA

G06F 15/16

709232, 714E11144

A method of detecting and isolating a fault includes collecting information regarding utilization of a resource of a device. The method further includes predicting the fault based on the information and modifying operation of the device in response to the fault.