Jonathan S Min

US Patent:

6690753, Feb 10, 2004

Filed:

Jun 7, 2002

Appl. No.:

10/163871

Inventors:

Thomas D. Kwon - Milpitas CA
Jonathan S. Min - Buena Park CA
Fang Lu - Irvine CA
Thomas J. Kolze - Phoenix AZ

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04L 100

US Classification:

375344, 375350, 375348

Abstract:

A receiver includes a filter for filtering a received signal to produce a filtered signal. A converter converts the filtered signal to a baseband signal that is substantially free of an initial frequency offset and inter-symbol interference (ISI), responsive to a frequency-offset estimate and a restorative signal that compensates for the ISI. A detector detects symbols in the baseband signal to produce a decision signal. A restorative signal generator generates, from the decision signal, the restorative signal responsive to the frequency-offset estimate, such that the restorative signal compensates for the ISI.

US Patent:

6763032, Jul 13, 2004

Filed:

Feb 10, 2000

Appl. No.:

09/501892

Inventors:

Theodore F. Rabenko - Duluth GA
James C. H. Thi - Irvine CA
Thomas J. Quigley - Lawrenceville GA
Lisa V. Denney - Suwanee GA
Jonathan S. Min - Buena Park CA
Christopher R. Jones - Newport Beach CA
Henry Samueli - San Juan Capistrano CA
Fang Lu - Irvine CA
Feng Chen - Irvine CA
Sean F. Nazareth - Anaheim Hills CA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 7212

US Classification:

370442, 370488

Abstract:

A method for communicating information is disclosed wherein a time slot is allocated in a time division multiple access system for a transmission from a subscriber to a headend. Synchronization of a clock of the subscriber with respect to a clock of the headend is enhanced using a message transmitted from the headend to the subscriber which is indicative of an error in a subscriber transmission time with respect to the time slot. A feedback loop process is used to determine at least one of fractional symbol timing correction and carrier phase correction of a transmission from the subscriber to the headend. Filter coefficients are generated at the headend from a ranging signal transmitted from the subscriber to the headend and transmitting the filter coefficients from the headend to the subscriber, the filter coefficients being used by the subscriber to compensate for noise in a transmission from the subscriber to the headend.

US Patent:

6798854, Sep 28, 2004

Filed:

Jun 11, 2001

Appl. No.:

09/878730

Inventors:

Thomas J. Kolze - Phoenix AZ
Bruce J. Currivan - Irvine CA
Jonathan S. Min - Buena Park CA
Eric Ojard - San Francisco CA
James Chi Thi - Irvine CA
Daniel Howard - Atlanta GA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 110

US Classification:

375350

Abstract:

A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio.

US Patent:

6961314, Nov 1, 2005

Filed:

Aug 25, 2000

Appl. No.:

09/648895

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04L012/28

US Classification:

370252, 370352, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

6965616, Nov 15, 2005

Filed:

Oct 6, 2000

Appl. No.:

09/684712

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J001/00

US Classification:

370480, 370497, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7103065, Sep 5, 2006

Filed:

Nov 16, 2000

Appl. No.:

09/714713

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 3/16
H04J 3/24

US Classification:

370465, 370474

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.

US Patent:

7104534, Sep 12, 2006

Filed:

Jul 30, 2001

Appl. No.:

09/916576

Inventors:

Bruce J. Currivan - Irvine CA, US
Jonathan S. Min - Buena Park CA, US
Fang Lu - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

B23Q 3/08

US Classification:

269 32, 269228, 269 27

Abstract:

A system for detecting collisions in a shared communications medium, such as a TDMA medium, includes a receive path adapted to generate a first intermediate signal, a second intermediate signal, and a data symbol sequence from an input signal. A preamble detection module generates a correlation metric from the first intermediate signal. A power measurement module generates a power indication signal from the second intermediate signal. A noise measurement module generates a noise indication signal from the second intermediate signal and the data symbol sequence. A processing module is adapted to characterize the input signal as a collision for certain values of correlation metric, power indication signal, and noise indication signal.

US Patent:

7120123, Oct 10, 2006

Filed:

Nov 9, 2000

Appl. No.:

09/710238

Inventors:

Thomas J. Quigley - Lawrenceville GA, US
Jonathan S. Min - Buena Park CA, US
Lisa V. Denney - Suwanee GA, US
Henry Samueli - Corona Del Mar CA, US
Sean F. Nazareth - Anaheim Hills CA, US
Feng Chen - Irvine CA, US
Fang Lu - Irvine CA, US
Christopher R. Jones - Newport Beach CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04J 1/16

US Classification:

370252, 375222

Abstract:

A number of features for enhancing the performance of a cable transmission system in which data is transmitted between a cable modem termination system at a headend and a plurality of cable modems located different distances from the headend. The power transmission level, slot timing, and equalization of the cable modems are set by a ranging process. Data is transmitted by the modems in fragmented form. Various measures are taken to make transmission from the cable modems robust. The upstream data transmission is controlled to permit multiple access from the cable modems.