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Alfredo R Linz

from Austin, TX
Age ~73

Alfredo Linz Phones & Addresses

  • 5925 Rickerhill Ln, Austin, TX 78739 (512) 288-1362 (512) 288-5377

Work

Company: Looking for opportunities 2014 Position: Systems engineer and architect

Education

Degree: Doctorates, Masters, Doctor of Philosophy, Master of Science In Electrical Engineering School / High School: Southern Methodist University 1979 to 1984 Specialities: Electrical Engineering

Skills

Digital Signal Processors • Semiconductors • Analog • Algorithms • Mixed Signal • Ic • Asic • Fpga • Integration • Power Management • System Architecture • Debugging • Analog Circuit Design • Cmos • Embedded Systems • Hardware Architecture • Low Power Design • Verilog • Rtl Design • Integrated Circuit Design • Ofdm • Vlsi • Firmware • Physics • Microprocessors • Embedded Software • Pll • Digital Control • System Simulation • Digital Signal Processing • Matlab/Simulink • Led Lighting Systems • Simulink

Languages

English • Spanish

Industries

Semiconductors

Resumes

Resumes

Alfredo Linz Photo 1

Systems Engineer And Architect

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Location:
Austin, TX
Industry:
Semiconductors
Work:
Looking For Opportunities
Systems Engineer and Architect

Cirrus Logic Jul 2009 - 2014
Staff Power Systems Engineer, Energy, Exploration and Lighting Division

Integral Wave Technologies Apr 2004 - Jan 2009
Senior Systems Architect

Celite Systems Apr 2002 - Oct 2003
Member of Technical Staff

Legerity Aug 2000 - Mar 2002
Engineering Fellow
Education:
Southern Methodist University 1979 - 1984
Doctorates, Masters, Doctor of Philosophy, Master of Science In Electrical Engineering, Electrical Engineering
Escuela Politécnica Nacional 1969 - 1974
Skills:
Digital Signal Processors
Semiconductors
Analog
Algorithms
Mixed Signal
Ic
Asic
Fpga
Integration
Power Management
System Architecture
Debugging
Analog Circuit Design
Cmos
Embedded Systems
Hardware Architecture
Low Power Design
Verilog
Rtl Design
Integrated Circuit Design
Ofdm
Vlsi
Firmware
Physics
Microprocessors
Embedded Software
Pll
Digital Control
System Simulation
Digital Signal Processing
Matlab/Simulink
Led Lighting Systems
Simulink
Languages:
English
Spanish

Publications

Us Patents

Multi-Tone Transciever For Multiple Users

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US Patent:
6424674, Jul 23, 2002
Filed:
Jan 22, 1999
Appl. No.:
09/236122
Inventors:
Alfredo R. Linz - Austin TX
Terry L. Cole - Austin TX
Vijayakumaran V. Nair - Austin TX
Assignee:
Legerity, Inc. - Austin TX
International Classification:
H04B 138
US Classification:
375220, 375219
Abstract:
A method and apparatus are provided for supporting a plurality of user transceivers with a host transceiver. The method includes allocating at least one symbol of a DMT frame to a first user transceiver of the plurality of transceivers, providing a control signal from a second user transceiver of the plurality of transceivers to the host transceiver, allocating at least one symbol of the DMT frame to the second user transceiver in response to the control signal.

Method For Conserving Power In Transceivers

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US Patent:
6611564, Aug 26, 2003
Filed:
Feb 1, 1999
Appl. No.:
09/243391
Inventors:
Alfredo R. Linz - Austin TX
Terry L. Cole - Austin TX
Assignee:
Legerity, Inc. - Austin TX
International Classification:
H04B 138
US Classification:
375295, 375377, 714792, 370468
Abstract:
A method and apparatus are provided for delivering data within a frame to a peer station, the frame having at least a first and a second symbol. The method comprises determining whether the data in the first symbol is greater than or equal to a coding-gain threshold, loading at least a portion of the data within at least the second symbol in response to determining the data in the first symbol is greater than or equal to the coding-gain threshold to provide a new frame, and transmitting the new frame.

Method And Apparatus For Verifying And Correcting Connectivity

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US Patent:
6621831, Sep 16, 2003
Filed:
Jan 5, 1999
Appl. No.:
09/225387
Inventors:
Alfredo R. Linz - Austin TX
Assignee:
Legerity, Inc. - Austin TX
International Classification:
H04J 1266
US Classification:
370480, 370216, 370254
Abstract:
A method and apparatus are provided. The method includes providing an enable signal to a configuration device for generating a preselected signal, providing the preselected signal to a peer station over a subscriber line, and adjusting a transmission path of a signal to the peer station through the subscriber line in response to the preselected signal.

Color Coordination Of Electronic Light Sources With Dimming And Temperature Responsiveness

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US Patent:
20120242242, Sep 27, 2012
Filed:
Mar 26, 2012
Appl. No.:
13/430601
Inventors:
Alfredo R. Linz - Austin TX, US
Michael A. Kost - Cedar Park TX, US
Sahil Singh - Austin TX, US
International Classification:
H05B 37/02
US Classification:
315210, 315297
Abstract:
A lighting system includes one or more methods and systems to control the color spectrum of a lamp in response to both temperature and dim levels. In at least one embodiment, the lighting system includes a controller to control a correlated color temperature (CCT) and intensity of the lamp by independently adjusting currents to electronic light sources based on a dim level of the lighting system and temperature of the lighting system. The controller controls a first current to a first set of LEDs and a second current to a second set of LEDs. The control of the first current by the controller is jointly dependent on a dim level and temperature in the lighting system. In at least one embodiment, the control of the second current is dependent on the dim level or the dim level and temperature.

Color Mixing Of Electronic Light Sources With Correlation Between Phase-Cut Dimmer Angle And Predetermined Black Body Radiation Function

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US Patent:
20130069561, Mar 21, 2013
Filed:
Nov 9, 2012
Appl. No.:
13/673879
Inventors:
CIRRUS LOGIC, INC. - Austin TX, US
Alfredo R. Linz - Austin TX, US
Michael A. Kost - Austin TX, US
Sahil Singh - Austin TX, US
Assignee:
CIRRUS LOGIC, INC. - Austin TX
International Classification:
H05B 37/02
US Classification:
315297
Abstract:
A lighting system includes methods and systems to mix colors of light emitted from at least two LED emitters. In at least one embodiment, the lighting system includes a controller that responds to phase-cut angles of the dimming signal and correlates the phase-cut angles with a predetermined black body radiation function to dynamically adjust a color spectra of the mixed light in response to changes in phase cut angles of the phase-cut dimming level signal. In at least one embodiment, the controller utilizes the predetermined black body radiation function to dynamically adjust the color spectra of the mixed, emitted light in response to changes in phase cut angles of a phase-cut dimming level signal. In at least one embodiment, the predetermined black body radiation function specifies correlated color temperatures (CCTs) that model the CCTs of an actual non-LED based lamp, such as an incandescent lamp.

Method And Apparatus For Generating Tones In A Multi-Tone Modem

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US Patent:
62193775, Apr 17, 2001
Filed:
Jun 29, 1998
Appl. No.:
9/106993
Inventors:
Alfredo R. Linz - Austin TX
Assignee:
Legerity, Inc. - Austin TX
International Classification:
H04B 138
H04L 500
US Classification:
375222
Abstract:
A method and modem is provided for communicating data using a plurality of tones. The modem includes an IFFT unit capable of providing a signal comprising a plurality of tones, an interpolator capable of interpolating the signal to produce an interpolated signal, and a tone adder capable of adding a tone having a first preselected frequency and the interpolated signal to produce an output signal.

Digital-To-Analog Converter With No Offset-Induced Errors

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US Patent:
48433942, Jun 27, 1989
Filed:
Jan 21, 1988
Appl. No.:
7/146459
Inventors:
Alfredo R. Linz - Austin TX
Joe W. Peterson - Austin TX
Velayudhan V. Nair - Austin TX
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
H03M 178
US Classification:
341154
Abstract:
A digital-to-analog converter network for converting a digital signal having a plurality of binary bits into an analog output signal includes an R-2R ladder array (8a), a reference current source (IREF), a plurality of switches (S1, S2,. . . S9) associated with ladder sections of the ladder array (8a), and an operational amplifier (14). An equalization circuit (17) is operatively coupled to the inverting input of the operational amplifier (14) for selectively switching in a code-dependent impedance so that the effective output impedance of the ladder array (8a) remains substantially constant with binary codes of the digital input signal.

Delta-Sigma Adc With Multi-Stage Decimation Filter And Gain Compensation Filter

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US Patent:
56466218, Jul 8, 1997
Filed:
Nov 2, 1994
Appl. No.:
8/333535
Inventors:
Carlin Dru Cabler - Austin TX
Alfredo R. Linz - Austin TX
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
H03M 300
US Classification:
341143
Abstract:
An analog-to-digital conversion circuit is described which includes a front end sigma-delta modulator circuit, a multi-stage digital decimation filter circuit, and a digital compensation filter circuit. An overrange detect circuit is also provided.
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