David A Jacobs

US Patent:

20210409083, Dec 30, 2021

Filed:

Jul 2, 2021

Appl. No.:

17/366251

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

International Classification:

H04B 7/06
H04B 1/713

Abstract:

Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.

US Patent:

20210258026, Aug 19, 2021

Filed:

Feb 25, 2021

Appl. No.:

17/185912

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

Assignee:

VIASAT, INC. - Carlsbad CA

International Classification:

H04B 1/00
H04B 1/04
H04L 27/26

Abstract:

Methods, systems, and devices for channelizing a wideband waveform for transmission on a spectral band comprising unavailable channel segments are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms when channels of a system bandwidth are unavailable for transmission. A transmitter may separate a first wideband signal into segments, with each segment a bandwidth corresponding to a channel of the system bandwidth, and may map the segments to the available channels. The transmitter may combine the mapped segments into a second wideband waveform and transmit the second wideband waveform using the available channels. A receiver may receive a first wideband signal waveform and may separate the first wideband signal waveform into segments, de-map the segments and combine the de-mapped segments into a second wideband waveform for demodulation. The techniques may be used to transmit and receive wideband waveforms over tactical data links.

US Patent:

20210111774, Apr 15, 2021

Filed:

Oct 10, 2019

Appl. No.:

16/598261

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

International Classification:

H04B 7/06
H04B 1/713

Abstract:

Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.

US Patent:

20150078631, Mar 19, 2015

Filed:

Jul 7, 2014

Appl. No.:

14/324991

Inventors:

- San Diego CA, US
David W. Jacobs - Bethesda MD, US
David J. Kriegman - San Diego CA, US
Neeraj Kumar - Seattle WA, US

International Classification:

G06K 9/00
G06K 9/62

US Classification:

382118

Abstract:

A system is provided for localizing parts of an object in an image by training local detectors using labeled image exemplars with fiducial points corresponding to parts within the image. Each local detector generates a detector score corresponding to the likelihood that a desired part is located at a given location within the image exemplar. A non-parametric global model of the locations of the fiducial points is generated for each of at least a portion of the image exemplars. An input image is analyzed using the trained local detectors, and a Bayesian objective function is derived for the input image from the non-parametric model and detector scores. The Bayesian objective function is optimized using a consensus of global models, and an output is generated with locations of the fiducial points labeled within the object in the image.

Address:

7714 Saint Ln, Lanham, MD 20706

Phone:

3015777980

VIN:

1B3HB48B77D527094

Make:

DODGE

Model:

CALIBER

Year:

2007

Address:

14410 Dolbrook Ln, Bowie, MD 20721

VIN:

5FNYF18647B031697

Make:

HONDA

Model:

PILOT

Year:

2007