William Kuo-Hao Lu

US Patent:

7254217, Aug 7, 2007

Filed:

Jun 16, 2003

Appl. No.:

10/462431

Inventors:

Michael J. Rude - Minnetonka MN, US
Ronald R. Gerlach - Orange CA, US
Mo-Ching Justine Lau - Orange CA, US
Tiet Pham - Irvine CA, US
William W. Lu - Irvine CA, US

Assignee:

ADC DSL Systems, Inc. - Eden Prairie MN

International Classification:

H04M 1/24
H04M 3/08
H04M 3/22

US Classification:

379 3, 379 2203, 379 2208, 379 24, 370242, 375227

Abstract:

A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation between the first set of information and the second set of information. The first set of information and the second set of information can include echo canceller coefficients generated by an echo canceller coupled to the communication medium.

US Patent:

7443789, Oct 28, 2008

Filed:

Nov 21, 2001

Appl. No.:

09/990023

Inventors:

Donald J. Glaser - Huntington Beach CA, US
Anthony Barrera - Chino Hills CA, US
William W. Lu - Irvine CA, US
Dennis P. Miller - Fullerton CA, US

Assignee:

ADC DSL Systems, Inc. - Eden Prairie MN

International Classification:

G01R 31/08
G06F 11/00
G08C 15/00
H04J 1/16
H04J 3/14
H04L 1/00
H04L 12/28
H04B 1/38

US Classification:

370228, 370216, 455561

Abstract:

A system and method for protection switching in a transmission network is described. A protection switching mechanism comprises a multiplexer, a transmission path for each output of the multiplexer and a remote circuit. The multiplexer has an input coupled to receive an input signal and a plurality of outputs to output a plurality of output signals. Each transmission path is coupled to receive an associated output signal from the multiplexer. The transmission paths further include one or more redundant transmission paths, wherein signals directed to a faulty transmission path are redirected to an associated redundant transmission path. The remote circuit is used to selectively switch a redundant transmission path for a faulty transmission path at a subscriber.

US Patent:

20050036560, Feb 17, 2005

Filed:

Aug 14, 2003

Appl. No.:

10/640747

Inventors:

William Lu - Irvine CA, US
Mo-Ching Lau - Orange CA, US

International Classification:

H04L025/00

US Classification:

375257000

Abstract:

A method for modeling cable loss for a cable plant is provided. The method includes identifying a service to be provided over the cable plant, selectively entering a value corresponding to at least one parameter of the cable plant, and on entering values, determining and displaying the estimated cable loss for the cable plant providing the service based on the entered values and an empirical model of cable loss, the empirical model including data on losses affected by bridge tap placement and bridge tap length in the cable plant.

Address:

35 Leucadia, Irvine, CA 92602

Phone:

714 508-3687

VIN:

WBAVC53547FZ77812

Make:

BMW

Model:

3 SERIES

Year:

2007