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Carl H Alelyunas

from Austin, TX
Age ~67
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Also known as:
Carl Harry Alelyunas, Carl H Aleyunas, Carl S
Phone and address:
11129 Amesite Trl, Austin, TX 78726
(512) 358-1054
Related to:
Cosmo Merryweather, 40Thomas Graham, 92Howard Slobodin, 81Samantha Finney, 39Olivia SheridanChanel D Graham, 54
Connected to:
Aman Alem, 34Esam Alem, 52Gabriel Alem, 27Henok A Alem, 43Kassa D Alem, 38Neda Alem, 46Tarek Alem, 39Yafet Alem, 74Yodit Alem, 45Hassan A Alemadi, 43

Carl Alelyunas Phones & Addresses

  • 11129 Amesite Trl, Austin, TX 78726 (512) 358-1054
  • West Linn, OR
  • 11674 Forest View Dr, Nevada City, CA 95959
  • Doylestown, PA
  • Corbett, OR
  • Madison, WI
  • Beaverton, OR
  • Clackamas, OR

Work

Company: Silicon labs Nov 1, 2014 Position: Senior staff systems engineer

Education

Degree: Master of Science, Masters School / High School: University of Wisconsin - Madison 1988 to 1990

Skills

Soc • Embedded Systems • Rtos • Device Drivers • Hardware Architecture • Embedded Linux • Semiconductors • H.264 • Debugging • Asic • Embedded Software • Video Processing • Signal Processing • Wireless • Ip • Fpga • Digital Tv

Industries

Consumer Electronics

Resumes

Resumes

Carl Alelyunas Photo 1

Senior Staff Systems Engineer

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Location:
Austin, TX
Industry:
Consumer Electronics
Work:
Silicon Labs
Senior Staff Systems Engineer
Entropic Communications Dec 2006 - Nov 2014
Principal Video Soc Engineer
Pixelworks Jun 2005 - Dec 2006
Principal Systems Engineer
2Wire 1999 - 2005
Senior Dsp Engineer
3Com 1996 - 1999
Senior Engineer
Education:
University of Wisconsin - Madison 1988 - 1990
Master of Science, Masters University of Oregon 1976 - 1980
Bachelors, Bachelor of Science, Mathematics
Skills:
Soc
Embedded Systems
Rtos
Device Drivers
Hardware Architecture
Embedded Linux
Semiconductors
H.264
Debugging
Asic
Embedded Software
Video Processing
Signal Processing
Wireless
Ip
Fpga
Digital Tv

Publications

Us Patents

In-Band Signal And Detector For Pcm Modem Exception Processing

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US Patent:
6373889, Apr 16, 2002
Filed:
May 27, 1998
Appl. No.:
09/085411
Inventors:
Carl H. Alelyunas - Nevada City CA
Vladimir Parizhsky - New York NY
Andrew Norrell - Nevada City CA
Assignee:
3Com Corporation - Santa Clara CA
International Classification:
H03H 2100
US Classification:
375233
Abstract:
A signal for exception processing is provided. The signal includes a first sequence of PCM codewords. Each PCM codeword in the sequence has a magnitude corresponding to a maximum point within an active constellation. The signal further includes a timing mark following the first sequence. In addition, a client device is provided. The client device includes a receiver and a detector coupled to the receiver. The receiver is coupled to an analog subscriber loop and has a decision feedback equalizer. The receiver provides a decision corresponding to data sent by a digital data source. The detector monitors the decision of the receiver to determine when an exception has been requested by the digital data source. Further, a method of requesting a change in a mode of operation of a client device when the client device is operating in a data mode is provided. The data mode includes receiving signal points selected from an active constellation and deciding which points have been received to thereby recover data.

Low Complexity Frequency Estimator And Interference Cancellation Method And Device

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US Patent:
6498820, Dec 24, 2002
Filed:
May 6, 1999
Appl. No.:
09/305954
Inventors:
Larry S. Thomson - Grass Valley CA
Carl H. Alelyunas - Nevada City CA
Assignee:
3Com Corporation - Santa Clara CA
International Classification:
H04B 110
US Classification:
375346, 375222, 375229, 375285
Abstract:
A method and apparatus for estimating the frequency of a periodic signal and for canceling the interference in a modem signal. Power line noise may interfere with electronic signals. Since power lines may be either 50 Hz or 60 Hz, depending on the country, frequency estimation of the periodic power line noise is necessary. Modem signals are received and autocorrelated in order to identify the periodic characteristics of the signal over time. Once the frequency is identified, the power line noise is modeled based on creating a circular buffer. Initially, the circular buffer is composed of scaled samples of one cycle of the fundamental frequency of the power line noise. Thereafter, samples are received, scaled, and combined with previous buffer values in order to update the buffer. In this manner, the buffer models the power line noise, so that the power line noise may be removed from the system.

Direct Digital Conversion Of Baseband Signals To Super-Nyquist Frequencies

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US Patent:
6507303, Jan 14, 2003
Filed:
May 31, 2000
Appl. No.:
09/584459
Inventors:
Carl H. Alelyunas - Nevada City CA, 95959
Cotter W. Sayre - Nevada City CA, 95959
Larry Thomson - Howell NJ, 07731
International Classification:
H03M 166
US Classification:
341144, 341118
Abstract:
Method and apparatus for shifting of a lowpass signal to a higher frequency and for precompensating distortion caused by a digital to analog converter (DAC). Higher frequency signals are generated by filtering the output of the DAC so that at least one of the replicas generated by the DAC is the signal of interest. In this manner, the higher frequency signals for wireless transmitters, or for other applications, may be generated more easily. Moreover, compensation for distortion caused by the DAC is performed by a precompensator which modifies for distortion, not at the baseband signal, but at a passband frequency.

System And Method For Efficient Demodulation And Filtering Of A Received Signal

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US Patent:
6542028, Apr 1, 2003
Filed:
Jul 27, 2001
Appl. No.:
09/916931
Inventors:
Andrew L. Norrell - Nevada City CA
Philip DesJardins - Nevada City CA
Carl Alelyunas - Nevada City CA
Assignee:
2Wire, Inc. - San Jose CA
International Classification:
H03D 300
US Classification:
329304, 708627
Abstract:
An efficient demodulation and low pass filter structure comprises a shift-add-negate structure that effectively multiplies each received sample by a combined demodulation and filter coefficient, and an accumulator that accumulates the products. Low pass filter coefficients are selected such that the shift-add-negate structure implements multiplications by shifts, adds, and negations. In the preferred embodiment, the demodulation and low pass filter structure outputs three complex samples per symbol.

Interpolating Bandpass Filter For Packet-Data Receiver Synchronization

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US Patent:
6553087, Apr 22, 2003
Filed:
May 4, 2001
Appl. No.:
09/848814
Inventors:
Carl H. Alelyunas - Nevada City CA
Philip DesJardins - Nevada City CA
Assignee:
2Wire, Inc. - San Jose CA
International Classification:
H04L 700
US Classification:
375357, 375355, 375362, 370516
Abstract:
An interpolating bandpass filter for packet-data receiver synchronization comprises a single delay line that delays the passband-sampled data from the analog-to-digital converter, and a convolving structure that uses the delay line to implement a L-times oversampling bandpass filter. A separate accumulator accumulates a fractional phase difference that represents the frequency offset between the remote transmitters frequency and the receivers sampling frequency. The integer portion of the accumulator is used to determine the number of samples to delay the input of the filter, while the fractional portion is used to choose two coefficient sets closest to the desired delay and to interpolate between these two filter sets.

Apparatus And Method For Fm Remodulation Of Envelope Modulated Data Signals

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US Patent:
6560293, May 6, 2003
Filed:
May 4, 1999
Appl. No.:
09/304756
Inventors:
Carl H. Alelyunas - Nevada City CA
Cotter W. Sayre - Nevada City CA
Assignee:
3Com Corporation - Santa Clara CA
International Classification:
H04L 512
US Classification:
375261, 375270, 375301, 455109
Abstract:
An apparatus and method for transmitting envelope modulated data signals on a Radio Frequency (RF) carrier system, which produces high error performance through remodulation of the data signals onto an RF carrier are provided. The apparatus includes a transmit chain where, the data signal is input to a mixer to create upper and lower sidebands of the data signal. A low pass filter removes the upper sideband and passes the lower sideband to a frequency modulation (FM) modulator which modulates an RF carrier with the lower sideband. The apparatus also includes a receiver chain that has an FM receiver which receives the FM RF carrier signal transmitted by the transmit chain and recovers the lower sideband, which is then input to a multiplier to again generate upper and lower sideband signals. A bandpass filter removes the lower sideband and passes the upper sideband as a received envelope modulated data signal.

Direct Digital Conversion Of Baseband Signals To Super-Nyquist Frequencies

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US Patent:
6703954, Mar 9, 2004
Filed:
Dec 20, 2002
Appl. No.:
10/327448
Inventors:
Carl H. Alelyunas - Nevada City CA
Cotter W. Sayre - Nevada City CA
Larry Thomson - Howell NJ
Assignee:
3Com Corporation - Santa Clara CA
International Classification:
H03M 166
US Classification:
341144
Abstract:
Method and apparatus for shifting of a lowpass signal to a higher frequency and for precompensating distortion caused by a digital to analog converter (DAC). Higher frequency signals are generated by filtering the output of the DAC so that at least one of the replicas generated by the DAC is the signal of interest. In this manner, the higher frequency signals for wireless transmitters, or for other applications, may be generated more easily. Moreover, compensation for distortion caused by the DAC is performed by a precompensator which modifies for distortion, not at the baseband signal, but at a passband frequency.

Load Coil And Dsl Repeater Including Same

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US Patent:
7072385, Jul 4, 2006
Filed:
Sep 26, 2000
Appl. No.:
09/670475
Inventors:
Brian L. Hinman - Los Gatos CA, US
Andrew L. Norrell - Nevada City CA, US
Carl Alelyunas - Nevada City CA, US
Assignee:
2Wire, Inc. - San Jose CA
International Classification:
H04B 17/02
US Classification:
375211, 375258, 379 30, 379377
Abstract:
Systems and methods are disclosed for improving DSL performance, including ADSL and VDSL performance, over a local loop between a telephone company central office and a customer premises. In particular, a DSL repeater is coupled to the local loop and amplifies downstream and upstream DSL signals to at least partially compensate for DSL signal attenuation that occurs as DSL signals pass over the local loop. Pursuant to one embodiment, the DSL repeater includes a POTS load coil to improve the POTS, or voice band, transmission over the local loop. According to this embodiment, the DSL repeater provides both improved POTS band signal transmission and DSL service. One embodiment of the load coil includes a coupled inductor having compensating capacitors coupled thereto for counter-balancing the inter-winding capacitance of the coupled inductor. In another embodiment, the load coil includes a high intra-winding capacitance for counter-balancing the inter-winding capacitance of a coupled inductor. Pursuant to yet another embodiment, the load coil comprises a pair of discrete, uncoupled inductors and a low intra-winding capacitance.
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Carl H Alelyunas from Austin, TX, age ~67 Get Report