John Jairo Barrientos Suarez

US Patent:

20120251031, Oct 4, 2012

Filed:

Nov 5, 2009

Appl. No.:

12/613512

Inventors:

John Suarez - Princeton NJ, US
Konstantin Kravtsov - Moscow, RU
Paul R. Prucnal - Princeton NJ, US

International Classification:

G02F 1/035

US Classification:

385 3, 385 2

Abstract:

A system and method for cancellation of RF interference in the optical domain. The system and method utilize two Mach-Zehnder electrooptic modulators biased for parallel counter-phase modulation. The method of signal subtraction is referred to as incoherent optical subtraction, since two independent laser sources serve as the optical carrier waves. The system has produced the broadband cancellation result while simultaneously recovering a 50 dBm signal which was initially “buried” under the broadband interference. The cancellation depths achieved by the system are due to the accurate channel tracking and precise time delays attainable with modern optical devices—unattainable with state-of-the-art electronic devices at the time of this writing.

US Patent:

20190277963, Sep 12, 2019

Filed:

Mar 7, 2018

Appl. No.:

15/913953

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

G01S 13/93
B60B 19/00

Abstract:

Various embodiments are described that relate to wave transmission from a vehicle, and reception of a response to the transmitted wave. A vehicle wheel can include a sensor that transmits a radio wave in front of the vehicle. The radio wave can reflect off a non-uniformity, such as a speed bump or pothole, and be returned to the sensor. A controller can compare the transmitted wave against the returned wave to identify the existence of the non-uniformity.

US Patent:

20190052170, Feb 14, 2019

Filed:

Aug 14, 2017

Appl. No.:

15/675812

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

H02M 3/07
H02M 1/08

Abstract:

Various embodiments are described that relate to a proportional-integral-derivative controller. The proportional-integral-derivative controller obtains an input voltage and from the input voltage produces an output voltage. Achievement of a particular output voltage can be accomplished through variable resistances in the proportional-integral-derivative controller. To realize these variable resistances, a switching capacitor set can be employed. The switching capacitor set can include individual capacitors with switches. The switches can function with a switching frequency. The switching frequency causes individual capacitors to function with an effective resistance. The resistance can directly correspond to the switching frequency. To change the resistance, the switching frequency can be changed.

US Patent:

20180374280, Dec 27, 2018

Filed:

Jun 23, 2017

Appl. No.:

15/631024

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

G07B 15/06
G06Q 20/34
G06Q 20/32

Abstract:

Various embodiments are described that relate to a transceiver, such as a transceiver associated with a vehicle. The transceiver can receive information from a user, such as by way of the user inserting a credit card or an identification card into a card reader of the transceiver. Based on this received information, the transceiver can output a signal. This signal can be used to communicate various details, such as financial transaction information or information to allow access to an area.

US Patent:

20180238961, Aug 23, 2018

Filed:

Feb 21, 2017

Appl. No.:

15/437713

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US
Sergey Rudin - Dayton MD, US
Meredith Reed - Perry Hall MD, US
Michael Shur - Latham NY, US

International Classification:

G01R 31/311
G01R 31/28
G01R 31/3185
G01R 31/265

Abstract:

Various embodiments are described that relate to failure determination for an integrated circuit. An integrated circuit can be tested to determine if the integrated circuit is functioning properly. The integrated circuit can be subjected to a specific radiation such that the integrated circuit produces a response. This response can be compared against an expected response to determine if the response matches the expected response. If the response does not match the expected response, then the integrated circuit fails the test. If the response matches the expected response, then the integrated circuit passes the test.

US Patent:

20180048991, Feb 15, 2018

Filed:

Oct 11, 2017

Appl. No.:

15/729830

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

H04W 4/02
H04B 5/00
H02J 50/10

Abstract:

Various embodiments associated with signal conversion while underwater are described. A source can transmit an alternating current signal with a relatively high frequency over a relatively long distance. The alternating current signal with the relatively high frequency can be converted to an alternating current signal with a relatively low frequency. An example of this conversion can be done by converting the alternating current signal with the relatively high frequency into a direct current signal. The direct current signal can then be converted into the alternating current signal with the relatively low frequency. The alternating current signal with the relatively low frequency can be transmitted from a transmission coil to a pick-up coil. After reception by the pick-up coil the alternating current signal with the relatively low frequency can be processed, such as processed to determine a direction of the source of the alternating current signal with the relatively high frequency.

US Patent:

20170248695, Aug 31, 2017

Filed:

Feb 26, 2016

Appl. No.:

15/054268

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

G01S 13/94
G01S 7/41

Abstract:

Various embodiments that pertain to surface non-uniformity detection through use of radio waves are described. A vehicle can transmit radio waves to an area the vehicle is traveling to, such as a road in front of an automobile. The automobile can receive and process returned radio waves to determine if the road has a non-uniformity, such as a significant pothole or speed bump. If the road has the non-uniformity, then a driver of the automobile can be alerted so the driver can decide if evasive action should be taken and take such action if appropriate.

US Patent:

20160252613, Sep 1, 2016

Filed:

Feb 27, 2015

Appl. No.:

14/633814

Inventors:

- Washington DC, US
John Suarez - Brooklyn NY, US

International Classification:

G01S 13/94

Abstract:

Various embodiments that pertain to surface non-uniformity detection through use of radio waves are described. A vehicle can transmit radio waves to an area the vehicle is traveling to, such as a road in front of an automobile. The automobile can receive and process returned radio waves to determine if the road has a non-uniformity, such as a significant pothole or speed bump. If the road has the non-uniformity, then a driver of the automobile can be alerted so the driver can decide if evasive action should be taken and take such action if appropriate.