Sang V Bui, 604400 Boone Rd UNIT 224, Houston, TX 77072

7068611, Jun 27, 2006

Mar 4, 2002

10/086725

Sang T. Bui - Irvine CA, US

Broadcom Corporation - Irvine CA

H04J 1/16

370252, 370286, 375224, 379 3, 37940605

A method and system for performing diagnostic tests on a communications system. Diagnostic test signals are generated by a transceiver included within the communications system. Diagnostic data signals generated within the communications system in response to the diagnostic test signals are collected by the transceiver. The communications transceiver may operate alone, with an assisting communications transceiver, or with a non-assisting communications transceiver. The collected diagnostic data signals are stored and made available for later analysis. The method and system are used to generate and store ECHO Crosstalk, Near End Cross Talk (NEXT) and Far End CrossTalk (FEXT) data signals.

7190718, Mar 13, 2007

Oct 29, 2002

10/281992

Sang T Bui - Irvine CA, US
Mark Berman - Newport Coast CA, US
Oscar E Agazzi - Irvine CA, US

Broadcom Corporation - Irvine CA

H04B 3/46
H04L 5/16
H04H 7/30

375224, 375219, 375233

An apparatus for processing a received signal includes an analog-to-digital converter (ADC) configured to produce a sampled signal from a received signal using a candidate sampling phase. An adaptive filter includes adaptive filter coefficients and is configured to receive the sampled signal and converge the filter coefficients based on the candidate sampling phase. A controller includes a module for comparing the converged filter coefficients to filter coefficient thresholds, and a module for determining a largest filter coefficient among one or more excessive filter coefficients that exceed one or more corresponding filter coefficient thresholds. The apparatus is stepped through multiple candidate sampling phases. A best sampling phase is selected based on the largest filter coefficients associated with the candidate sampling phases.

7239680, Jul 3, 2007

Aug 15, 2003

10/641011

Sang T. Bui - Irvine CA, US

Broadcom Corporation - Irvine CA

H04B 1/10
G01R 31/08

375350, 370242

A method is used to determine information about a communication channel using an adaptive filter coupled to the channel. The adaptive filter includes adaptive filter coefficients. The filter coefficients are compared to filter coefficient thresholds. A determination is made whether one of a communication link and a channel fault exists. If a channel fault exists, a determination is made whether, i) a cable open condition exists in the channel, and ii) a cable short condition exists in the channel. An indication is made whether the channel is one of linked, open, and shorted.

7480326, Jan 20, 2009

Oct 29, 2002

10/282206

Sang T Bui - Irvine CA, US
Mark Berman - Newport Coast CA, US
Oscar E Agazzi - Irvine CA, US

Broadcom Corporation - Irvine CA

H04B 1/38
H04B 1/10
G01R 31/08

375219, 375350, 370242

A system includes an adaptive filter coupled to a communication channel. The adaptive filter includes a set of adaptive filter coefficients. A memory stores a predetermined set of filter coefficient thresholds. The filter coefficient thresholds may be indicative of channel faults or a length of the channel. A controller is configured to compare the set of filter coefficients to the predetermined set of filter coefficient thresholds. The controller is configured to determine the information about the channel based on compare results.

7701867, Apr 20, 2010

May 3, 2006

11/416108

Sang T. Bui - Irvine CA, US

Broadcom Corporation - Irvine CA

H04J 1/16
H04L 12/56

370252, 370286, 375224, 379 3, 37946005

A method and system for performing diagnostic tests on a communications system. Diagnostic test signals are generated by a transceiver included within the communications system. Diagnostic data signals generated within the communications system in response to the diagnostic test signals are collected by the transceiver. The communications transceiver may operate alone, with an assisting communications transceiver, or with a non-assisting communications transceiver. The collected diagnostic data signals are stored and made available for later analysis. The method and system are used to generate and store ECHO Crosstalk, Near End Cross Talk (NEXT) and Far End CrossTalk (FEXT) data signals.

2003012, Jul 3, 2003

Jun 14, 2002

10/172307

Sang Bui - Irvine CA, US

G06F001/26

713/320000

A single integrated circuit includes logic that supports 10BASE-T, 100BASE-T and 1000BASE-T transceiver functionality. The invention implements power management techniques by placing unused functionality in sleep mode. When the functionality is required later, then that functionality may be awakened again and used as required for the particular situation. A processor is able to interact with the media access controller (MAC), and the MAC then communicates with the physical layer (PHY). The invention is adaptable to various devices that are capable to operating using 10BASE-T, 100BASE-T and 1000BASE-T, even those the PHY of these devices may be somewhat different.

2006018, Aug 17, 2006

Apr 13, 2006

11/403452

Sang Bui - Irvine CA, US

Broadcom Corporation, a California Corporation - Irvine CA

G06F 1/32
G06F 1/26

713320000

A single integrated circuit includes logic that supports 10BASE-T, 100BASE-T and 1000BASE-T transceiver functionality. The invention implements power management techniques by placing unused functionality in sleep mode. When the functionality is required later, then that functionality may be awakened again and used as required for the particular situation. A processor is able to interact with the media access controller (MAC), and the MAC then communicates with the physical layer (PHY). The invention is adaptable to various devices that are capable to operating using 10BASE-T, 100BASE-T and 1000BASE-T, even those the PHY of these devices may be somewhat different.

2010015, Jun 17, 2010

Aug 5, 2009

12/536172

Mehmet Tazebay - Irvine CA, US
Scott Powell - Carlsbad CA, US
Peiqing Wang - Irvine CA, US
Bruce Conway - Aliso Viejo CA, US
Sang Bui - Irvine CA, US

H03D 1/04

375346

Communication devices coupled via a communication link may comprise physical layer devices that may be operable to determine presence of a received signal and to mitigate noise in the signal prior to processing and/or validating the signal. Analog and/or digital signal processing may be utilized to process the signal and/or mitigate noise in the signal. Noise mitigation may comprise near-end crosstalk cancelling and/or echo cancelling and/or may utilize local transmit signal information. Subsequent to noise mitigation, samples of the noise reduced signal may be accumulated and/or an average signal strength and/or average signal power level may be determined. The average signal strength and/or average signal power level may be compared to one or more thresholds which may be configurable and/or programmable.