Harold F Roberts

Address:

9749 Echo Hls, Alexandria, KY 41001

Phone:

8596354002

VIN:

KNAGM4AD9C5019677

Make:

KIA

Model:

OPTIMA HYBRID

Year:

2012

US Patent:

6434583, Aug 13, 2002

Filed:

Sep 15, 1999

Appl. No.:

09/396650

Inventors:

Mark J. Dapper - Cincinnati OH
Michael J. Geile - Loveland OH
Terrance J. Hill - Fairfield OH
Harold A. Roberts - Eden Prairie MN
Brian D. Anderson - Plymouth MN
Jeffrey Brede - Eden Prairie MN
Mark S. Wadman - Eden Prairie MN
Robert J. Kirscht - Savage MN
James J. Herrmann - Eagan MN
Michael J. Fort - Eagan MN
Steven P. Buska - Minnetonka MN
Jeff Solum - Bloomington MN
Debra Lea Enfield - Chaska MN
Darrell Berg - Bloomington MN
Thomas Smigelski - Lake Zurich IL
Thomas C. Tucker - Chapel Hill NC
Joe Hall - Bloomington MN
John M. Logajan - Arden Hills MN
Somvay Boualouang - Bloomington MN
Heng Lou - Bloomington MN
Mark D. Elpers - Elk River MN
Matt Downs - Bloomington MN
Tammy Ferris - Bloomington MN
Adam Opoczynski - Plano TX
David S. Russell - Minneapolis MN
Calvin G. Nelson - Shorewood MN
Niranjan R. Samant - Middletown CT
Joseph F. Chiappetta - Trumbull CT
Scott Sarnikowski - San Jose CA

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

G06F 1714

US Classification:

708409, 708622

Abstract:

A apparatus for providing a Fast Fourier Transform (FFT) and an inverse FFT is provided. The apparatus comprises a radix-N core. The radix-N core includes at least N multipliers. The radix-N core also includes a twiddle-factor lookup table that stores complex twiddle-factors. The twiddle-factor lookup table is coupled to one input of each of the multipliers. The radix-N core also includes a conversion random access memory (RAM) that stores transform points. The conversion RAM is coupled to another input of each of the multipliers. The radix-N core also includes an array of at least N-times-N adder-subtracter-accumulators.

US Patent:

6467092, Oct 15, 2002

Filed:

Sep 16, 1999

Appl. No.:

09/397773

Inventors:

Michael J. Geile - Loveland OH
Harold A. Roberts - Eden Prairie MN
Michael J. Fort - Eagan MN
Jeff Solum - Bloomington MN

Assignee:

ADC Telecommunications Inc. - Eden Prairie MN

International Classification:

H04N 7173

US Classification:

725131

Abstract:

A method of transmitting data in a communication system is provided. The method includes adjusting upstream power levels in a multipoint-to-point communications system having a head end and a plurality of service units is provided. The method includes measuring power levels of signals from the service units at the head end and comparing the power levels with a nominal power level. Further, the method provides at least one coarse adjustment at the service units to correct for large variations between the measured power level nominal power level and at least one fine adjustment at the head end to correct for smaller variations between the measured power level and the nominal power level.

US Patent:

6608835, Aug 19, 2003

Filed:

Jan 11, 2002

Appl. No.:

10/044172

Inventors:

Michael J. Geile - Loveland OH
Harold A. Roberts - Eden Prairie MN
Michael J. Fort - Eagan MN
Jeff Solum - Bloomington MN

Assignee:

ADC Telecommunications, Inc. - Eden Prairie MN

International Classification:

H04L 1228

US Classification:

37039553, 370485, 370441

Abstract:

A multicarrier transmitting modem is described. The modem includes means for receiving strings of digital data each having one of a set of different possible values, means for mapping the strings into symbols each having the same fixed amount of phase of predetermined different waveforms corresponding to the different possible values in the set, means for modulating the fixed amount of phase plus an excess amount of phase of the predetermine waveforms onto multiple orthogonal carriers in response to the symbols, and means for transmitting the modulated carriers to a distribution network.

US Patent:

7355963, Apr 8, 2008

Filed:

Apr 20, 2007

Appl. No.:

11/737948

Inventors:

Michael J. Geile - Loveland OH, US
Jeffrey Brede - Eden Prairie MN, US
Harold A. Roberts - Eden Prairie MN, US

Assignee:

ACD Telecommunications Inc. - Eden Prairie MN

International Classification:

H04J 11/00

US Classification:

370208

Abstract:

Systems for tone allocation are provided. In one embodiment, a system comprises: a plurality of remote units and a host including a demodulator. Each remote transmits an upstream OFDM signal using a multiple access scheme to the host using an OFDM waveform. The host receives the upstream OFDM signals, the tones of the upstream signals substantially orthogonal when received at the host. Portions of upstream OFDM signals from at least two remotes arrive at the host at the same time. The host demodulates said portions. At least one remote transmits to the host using a first tone allocated by the host. The host sends an adjustment signal to the remote to adjust the timing of transmissions to improve orthogonality of the OFDM waveform. After the remote has begun transmission using the first tone but before the remote has completed its transmission, the host allocates to the remote a different tone.

US Patent:

7355964, Apr 8, 2008

Filed:

Jun 26, 2007

Appl. No.:

11/768500

Inventors:

Michael J. Geile - Loveland OH, US
Harold A. Roberts - Eden Prairie MN, US

Assignee:

ADC Telecommunications Inc. - Eden Prairie MN

International Classification:

H04J 11/00

US Classification:

370208, 370344, 370236

Abstract:

Systems for contention-based bandwidth requests in orthogonal frequency division multiplexing (OFDM) systems are provided. In one embodiment, a bi-directional communication system comprises: a multipoint-to-point host unit; and a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an OFDM waveform. The multipoint-to-point host unit is configured to receive the OFDM waveform, the OFDM comprising a plurality of tones transmitted by the plurality of remote units. A first remote unit of the plurality of remote units is configured to transmit a request for bandwidth to the host unit on a tone of the plurality of tones, wherein access to the tone is contention-based. The multipoint-to-point host unit is configured to direct a modem to transmit information on at least one tone of the OFDM waveform based on whether the modem successfully receives the request for bandwidth from the first remote unit of the plurality of remote units.

US Patent:

7391711, Jun 24, 2008

Filed:

May 11, 2007

Appl. No.:

11/747373

Inventors:

Michael J. Geile - Loveland OH, US
Harold A. Roberts - Eden Prairie MN, US

Assignee:

ADC Telecommunications Inc. - Eden Prairie MN

International Classification:

H04J 9/00

US Classification:

370204, 370203, 370205, 370206, 370207, 370208, 370210, 370319, 370320, 370321, 370322, 370335, 370336, 370344, 370347, 370348

Abstract:

Methods and systems for adaptive modulation are provided. In one embodiment, a method for a plurality of remote units of an orthogonal frequency division multiplexing multipoint-to-point communications system comprises: establishing communication between a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; transmitting a plurality of tones from the plurality of the remote units such that tones from more than one remote unit are simultaneously received at the host unit, the plurality of tones modulated with upstream information using orthogonal frequency division multiplexing; modulating up to a plurality of tones using a first modulation scheme when transmitting a first type of upstream information; and modulating up to a plurality of tones using a second modulation scheme when transmitting a second type of upstream information.

US Patent:

7391712, Jun 24, 2008

Filed:

Jul 12, 2007

Appl. No.:

11/776828

Inventors:

Michael J. Geile - Loveland OH, US
Harold A. Roberts - Eden Prairie MN, US
Brian D Anderson - Eden Prairie MN, US

Assignee:

ADC Telecommunications Inc. - Eden Prairie MN

International Classification:

H04L 9/00

US Classification:

370204, 370203, 370205, 370206, 370207, 370208, 370210, 370319, 370320, 370321, 370322, 370335, 370336, 370344, 370347, 370348

Abstract:

Methods and systems for forward-looking tone allocation are provided. In one embodiment, a method for an orthogonal frequency division multiplexing (OFDM) multipoint-to-point communications system comprises: establishing communication between a plurality of remote units and a host unit, the remote units communicatively coupled to the host in a multipoint-to-point configuration; transmitting a plurality of tones from the remote units, such that tones from more than one remote unit are simultaneously received at the host, the tones modulated with upstream information using OFDM; adjusting at least one characteristic of at least one tone at least one remote unit, in response to adjustment commands from the host, such that the orthogonality of the simultaneously received tones is improved as received at the host unit; and dynamically switching modulation from at least a first tone of the plurality of tones to a second tone based on an error-rate history of the second tone.

US Patent:

7400572, Jul 15, 2008

Filed:

Oct 24, 2007

Appl. No.:

11/923619

Inventors:

Michael J. Geile - Loveland OH, US
Harold A. Roberts - Eden Prairie MN, US

Assignee:

ADC Telecommunications Inc. - Eden Prairie MN

International Classification:

H04J 11/00
H04J 1/00
H04J 3/16
H04J 3/22
H04J 3/02

US Classification:

370203, 370343, 370465, 370480, 370462

Abstract:

Systems and methods for contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system are provided. In one embodiment, a multipoint-to-point, orthogonal frequency division multiplexed (OFDM) communication system comprises: a host unit; a plurality of remote units that access the host unit using an orthogonal frequency division multiple access scheme; wherein each of the remote units modulates upstream information into an OFDM signal modulated using a Fourier transform; wherein the host unit receives upstream OFDM signals from a plurality of the remote units, wherein portions of the upstream OFDM signals arrive at the host unit at the same time; wherein a first remote unit transmits a first upstream signal to the host unit on a first orthogonal tone; and wherein the first remote unit retransmits the first upstream signal to the host unit in the event a collision occurs on the first orthogonal tone.