THOMAS DAN KWON
Pilots at Halstead Ter, Irvine, CA
License number
California A5096455
Issued Date
Sep 2016
Expiration Date
Sep 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
5 Halstead Ter, Irvine, CA 92603
Professional information
Receiver Having Decisional Feedback Equalizer With Remodulation And Related Methods
US Patent:
7418061, Aug 26, 2008
Filed:
Nov 15, 2006
Appl. No.:
11/599334
Inventors:
Thomas D. Kwon - Irvine CA, US
Jonathan S. Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas J. Kolze - Phoenix AZ, US
Jonathan S. Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas J. Kolze - Phoenix AZ, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 27/00, H04L 1/00
US Classification:
375316, 375350, 375348, 375233, 375344
Abstract:
A receiver includes a filter stage that receives, filters, and equalizes a received signal, and a decisional feedback loop coupled to the filter stage that receives and processes a signal output from the filter stage using remodulation. The decisional feedback loop includes a converter that generates a baseband signal, a detector that generates a decision signal, a restorative signal generator that generates a restorative signal using remodulation, and a carrier loop that generates a frequency correction signal and provides a frequency-offset estimate. The restorative signal and the frequency correction signal are provided to the converter to compensate for inter-symbol interference. The presented “remodulation” technique decouples interaction between the carrier loop, the pre-filters, and the equalizer of the restorative signal generator, providing an architecture that is more stable and significantly faster than conventional architectures.
Nonlinear Compensation In Analog To Digital Converters
US Patent:
7800521, Sep 21, 2010
Filed:
Dec 22, 2008
Appl. No.:
12/341550
Inventors:
Avanindra Madisetti - Coto de Caza CA, US
Thomas D. Kwon - Irvine CA, US
Aaron W. Buchwald - Newport Coast CA, US
Thomas D. Kwon - Irvine CA, US
Aaron W. Buchwald - Newport Coast CA, US
Assignee:
Mobius Semiconductor, Inc. - Irvine CA
International Classification:
H03M 1/06
US Classification:
341118, 341155
Abstract:
An apparatus for converting an analog signal to a digital signal comprising a first analog to digital converter for generating a first digital value from an analog value. A second analog to digital converter for generating a second digital value from the analog value. Logic for determining a correction factor for the second digital value based on a difference between the first digital value and the second digital value, wherein the logic updates the correction factor.
Minimizing Adverse Effects Of Skew Between Two Analog-To-Digital Converters
US Patent:
7808408, Oct 5, 2010
Filed:
Feb 19, 2009
Appl. No.:
12/388627
Inventors:
Avanindra Madisetti - Coto de Caza CA, US
Thomas D. Kwon - Irvine CA, US
Aaron W. Buchwald - Newport Coast CA, US
Thomas D. Kwon - Irvine CA, US
Aaron W. Buchwald - Newport Coast CA, US
Assignee:
Moblus Semiconductor, Inc. - Irvine CA
International Classification:
H03M 1/06
US Classification:
341118, 341155
Abstract:
Skew between a first clock signal received by a first analog-to-digital converter (ADC) and a second clock signal received by a second ADC is adjusted to minimize error. Each ADC has an ADC element that produces a respective first or second digital output signal in response to an analog input signal and a respective first or second clock signal. A correction signal is produced in response to the first and second digital output signals. The skew between the first and second clock signals is then adjusted in response to the correction signal.
Receiver Having Decisional Feedback Equalizer With Remodulation And Related Methods
US Patent:
2003000, Jan 2, 2003
Filed:
Jun 7, 2002
Appl. No.:
10/163871
Inventors:
Thomas Kwon - Irvine CA, US
Jonathan Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas Kolze - Phoenix AZ, US
Jonathan Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas Kolze - Phoenix AZ, US
International Classification:
H03D001/00, H04L027/06, H03K005/159, H04L027/22, H04L025/08
US Classification:
375/340000, 375/348000, 375/233000, 375/326000
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.
Receiver Having Decisional Feedback Equalizer With Remodulation And Related Methods
US Patent:
7142618, Nov 28, 2006
Filed:
Dec 1, 2003
Appl. No.:
10/724036
Inventors:
Thomas D Kwon - Irvine CA, US
Jonathan S Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas J Kolze - Phoenix AZ, US
Jonathan S Min - Buena Park CA, US
Fang Lu - Rowland Heights CA, US
Thomas J Kolze - Phoenix AZ, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 1/00
US Classification:
375344, 375348, 375233, 375350
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.