Patents by Inventor Javier Perez-Ramirez

Javier Perez-Ramirez has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200267636
    Abstract: An access point (AP) may be configured by processing circuitry to operate as a coordinator AP for performing BSS channel level coordination. The coordinator AP is configured to assign non-overlapping channels to one or more coordinated APs of overlapping BSSs to schedule time-sensitive traffic to help ensure bounded latency, jitter and reliability per BSS. In some embodiments, the AP may be configured for performing transmission level coordination and may initiate a coordinated transmission opportunity (TXOP) for resource assignment to control contention access among managed BSSs. To perform the BSS channel level coordination, the coordinator AP is configured to encode a multi-AP trigger frame (M-TF) to initiate the coordinated TXOP. The M-TF may be encoded to include a time-sensitive operation IE indicating how each STA is to access the channel within the coordinated TXOP.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Dave A. Cavalcanti, Juan Fang, Mohammad Mamunur Rashid, Carlos Cordeiro, Cheng Chen, Laurent Cariou, Javier Perez-Ramirez, Dibakar Das, Chittabrata Ghosh
  • Publication number: 20200213160
    Abstract: This disclosure describes systems, methods, and devices related to multi-user uplink channel sounding. A device may determine a channel sounding sequence with one or more access points (APs), wherein the channel sounding sequence comprises a null data packet announcement (NDPA) communicated with at least one of the one or more APs. The device may determine a first group of station devices (STAs) associated with a first basic service set (BSS). The device may cause to send a trigger frame to the first group of STAs to solicit an uplink NDP from each STA of the first group of STAs. The device may identify a first uplink NDP received from a first STA of the first group of STAs. The device may identify a second uplink NDP received from a second STA of a second group of STAs.
    Type: Application
    Filed: February 19, 2020
    Publication date: July 2, 2020
    Inventors: Roya Doostnejad, Juan Fang, Feng Jiang, Laurent Cariou, Dave Cavalcanti, Xiaogang Chen, Timothy F. Cox, Jeffrey Foester, Po-Kai Huang, Qinghua Li, Javier Perez-Ramirez
  • Publication number: 20200213004
    Abstract: This disclosure describes systems, methods, and devices related to frequency offset tracking in optical signals. A device may identify modulated light received from a light source, wherein the modulated light is received at a frame rate, and wherein the modulated light is associated with pixel clusters. The device may determine light samples based on the pixel clusters, the light samples including a first light sample and a second light sample. The device may determine a vector norm between the first light sample and the second light sample using an oversampling factor. The device may determine that the vector norm is below a threshold. The device may determine a start frame delimiter (SFD) based on the vector norm. The device may demodulate the symbol based on the oversampling factor.
    Type: Application
    Filed: December 27, 2018
    Publication date: July 2, 2020
    Inventors: JAVIER PEREZ-RAMIREZ, SPENCER MARKOWITZ, ZORAN ZIVKOVIC, NAGARAJAN MURALIDHARAN, ANKITKUMAR NAVIK, RUFENG MENG, RICHARD ROBERTS
  • Patent number: 10676416
    Abstract: The invention relates to a process for methanol synthesis comprising the steps of providing a syngas feed stream comprising hydrogen and a mixture of carbon dioxide and carbon monoxide, wherein carbon dioxide represents from 1 to 50 mol % of the total molar content of the feed stream, carbon monoxide is contained from 0.1 to 85 mol % of the total molar content, and H2 is comprised from 5 to 95 mol % of the total molar content of the feed stream; providing an indium oxide catalyst selected from a bulk catalyst and a supported catalyst comprising indium oxide (In2O3) as the main active phase; putting in contact said stream with said catalyst at a reaction temperature of at least 373 K (99.85° C.) and under a pressure ranging of at least 1 MPa; and recovering the methanol effluents. The invention also relates to an indium oxide based catalyst.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 9, 2020
    Assignees: TOTAL RAFFINAGE CHIMIE, ETH ZURICH
    Inventors: Daniel Curulla-Ferre, Charlotte Drouilly, Oliver Martin, Cecilia Mondelli, Javier Perez-Ramirez, Antonio J. Martin-Fernandez
  • Patent number: 10668450
    Abstract: The invention relates to a process for methanol synthesis comprising the steps of providing a syngas feed stream comprising hydrogen and carbon oxides selected from carbon dioxide or a mixture of carbon dioxide and carbon monoxide, wherein carbon dioxide represents from 1 to 50 mol % of the total molar content of the feed stream, carbon monoxide is contained from 0 to 85 mol % of the total molar content, and H2 is comprised from 5 to 95 mol % of the total molar content of the feed stream, and a catalyst comprising indium oxide (In2O3) on a support wherein the support comprises zirconium dioxide or is zirconium dioxide; putting in contact said stream with said supported catalyst at a reaction temperature of at least 373 K (99.85° C.) and under a pressure ranging of at least 1 MPa; and recovering the methanol effluents. The invention also relates to a supported indium oxide catalyst.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 2, 2020
    Assignee: TOTAL RAFFINAGE CHIMIE
    Inventors: Daniel Curulla-Ferre, Charlotte Drouilly, Oliver Martin, Cecilia Mondelli, Javier Perez-Ramirez, Antonio J. Martin-Fernandez
  • Publication number: 20200137827
    Abstract: This disclosure describes systems, methods, and devices related to extremely high throughput (EHT) multiuser hybrid automatic repeat request (HARQ). A device may determine one or more medium access control (MAC) protocol data unit (MPDUs) to be sent to a first station device of one or more station devices, wherein the one or more MAC protocol data units (MPDUs) comprise a first MPDU. The device may segment the first MPDU into a plurality of segments, wherein the one or more segments include a first segment and a second segment. The device may cause to send the plurality of segments to the first station device. The device may identify a feedback frame received from the first station device, wherein the feedback frame comprises error information associated with the plurality of segments. The device may cause to retransmit at least one of the plurality of segments based on the error information.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 30, 2020
    Inventors: Laurent Cariou, Xiaogang Chen, Po-Kai Huang, Javier Perez-Ramirez, Shahrnaz Azizi, Ravikumar Balakrishnan, Daniel Bravo, Feng Jiang, Thomas J. Kenney, Qinghua Li, Robert Stacey
  • Publication number: 20200128531
    Abstract: This disclosure describes systems, methods, and devices related to probes with service set identifier (SSID). A device may determine one or more access points (APs) in an enterprise extended service set (ESS). The device may identify a probe request received from a first station device, wherein the probe request comprises a service set element, wherein the service set element comprises a variable number of service set fields based on a number of APs in the ESS. The device may determine that a service set that matches at least one of the service set fields in the service set element. The device may cause to send a probe response to the first station device in response to the probe request.
    Type: Application
    Filed: December 17, 2019
    Publication date: April 23, 2020
    Inventors: Alexander Min, Laurent Cariou, Shahrnaz Azizi, Rath Vannithamby, Carlos Cordeiro, Thomas J. Kenney, Ravikumar Balakrishnan, Javier Perez-Ramirez
  • Patent number: 10586394
    Abstract: An example apparatus for depth sensing includes an image data receiver to receive image data from a communication camera and an augmented reality (AR) camera. The apparatus also includes a modulated light detector to detect one or more modulated lights in the image data from the communication camera. The apparatus further includes a representation generator to generate a visual representation of a local image region for each of the detected modulated lights. The apparatus includes a region matcher to match the visual representation for each of the detected modulated lights with a region in the image data received from the AR camera. The apparatus also further includes a distance estimator to estimate a distance between a dual camera receiver and the one or more modulated lights based on a disparity between a position of the visual representation and a position of the matched region in the image data.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: March 10, 2020
    Assignee: Intel Corporation
    Inventors: Javier Perez-Ramirez, Spencer Markowitz, Zoran Zivkovic
  • Patent number: 10582196
    Abstract: An example apparatus for encoding video frames includes a receiver to receive events from a dynamic vision sensor and a video frame from an image sensor. The apparatus also includes a heat map generator to generate a heat map based on the received events. The apparatus further includes a region of interest (ROI) map generator generate a ROI map based on the heat map. The apparatus includes a parameter adjuster to adjust an encoding parameter based on the ROI map. The apparatus also further includes a video encoder to encode the video frame using the adjusted parameter.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 3, 2020
    Assignee: Intel Corporation
    Inventors: Javier Perez-Ramirez, Srenivas Varadarajan, Yiting Liao, Vallabhajosyula S. Somayazulu, Omesh Tickoo, Ibrahima J. Ndiour
  • Publication number: 20200061582
    Abstract: The invention relates to a process for methanol synthesis comprising the steps of providing a syngas feed stream comprising hydrogen and carbon oxides selected from carbon dioxide or a mixture of carbon dioxide and carbon monoxide, wherein carbon dioxide represents from 1 to 50 mol % of the total molar content of the feed stream, carbon monoxide is contained from 0 to 85 mol % of the total molar content, and H2 is comprised from 5 to 95 mol % of the total molar content of the feed stream, and a catalyst comprising indium oxide (In2O3) on a support wherein the support comprises zirconium dioxide or is zirconium dioxide; putting in contact said stream with said supported catalyst at a reaction temperature of at least 373 K (99.85° C.) and under a pressure ranging of at least 1 MPa; and recovering the methanol effluents. The invention also relates to a supported indium oxide catalyst.
    Type: Application
    Filed: December 20, 2016
    Publication date: February 27, 2020
    Inventors: Daniel CURULLA-FERRE, Charlotte DROUILLY, Oliver MARTIN, Cecilia MONDELLI, Javier PEREZ-RAMIREZ, Antonio J. MARTIN-FERNANDEZ
  • Publication number: 20200048173
    Abstract: The invention relates to a process for methanol synthesis comprising the steps of providing a syngas feed stream comprising hydrogen and a mixture of carbon dioxide and carbon monoxide, wherein carbon dioxide represents from 1 to 50 mol % of the total molar content of the feed stream, carbon monoxide is contained from 0.1 to 85 mol % of the total molar content, and H2 is comprised from 5 to 95 mol % of the total molar content of the feed stream; providing an indium oxide catalyst selected from a bulk catalyst and a supported catalyst comprising indium oxide (In2O3) as the main active phase; putting in contact said stream with said catalyst at a reaction temperature of at least 373 K (99.85° C.) and under a pressure ranging of at least 1 MPa; and recovering the methanol effluents. The invention also relates to an indium oxide based catalyst.
    Type: Application
    Filed: December 20, 2016
    Publication date: February 13, 2020
    Inventors: Daniel CURULLA-FERRE, Charlotte DROUILLY, Oliver MARTIN, Cecilia MONDELLI, Javier PEREZ-RAMIREZ, Antonio J. MARTIN-FERNANDEZ
  • Patent number: 10538480
    Abstract: The invention relates to a production process for di- and polyamines of the diphenylmethane series by the rearrangement of a condensation product of aniline and a methylene group-supplying agent preferably selected from the group consisting of aqueous formaldehyde solution, gaseous formaldehyde, para-formaldehyde, trioxane and mixtures thereof, wherein said condensation product is reacted in the presence of at least one silica-alumina catalyst, said catalyst having a surface area as determined by the BET method carried out according to ASTM D3663-03 (2015) of from 200 m2/g to 520 m2/g, preferably of from 350 m2/g to 495 m2/g, particularly preferably of from 400 m2/g to 490 m2/g, a molar ratio of silica/alumina on the catalyst surface of A, an overall (bulk) molar ratio of silica/alumina of C, and a quotient B=A/C; said catalyst being characterised in that “low” A values (i.e. equal to or lower than 8.0) are combined with “high” B values (i.e. of from 1.50 to 3.00), and “high” A values (i.e. larger than 8.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: January 21, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Jürgen Arras, Tobias Cäsar Keller, Javier Pérez-Ramirez
  • Publication number: 20200018814
    Abstract: Systems and techniques for locating a radio transmission source by scene reconstruction are described herein. A multipath radio signal—comprised of two or more multipath components—may be received at an antenna array. A collection of angle-of-arrival (AoA) values may be created from the multipath components. Thus, each AoA in the collection corresponds to one of the multipath components. An optical image of the environment may be obtained and possible reflective surfaces for the multipath components identified in the optical image. A set of paths may be created in a model of the environment by backtracking from the antenna array along the AoAs in the collection of AoA values. Here, the backtracking simulates reflections of the ray off of the surfaces identified in the optical image. A transmitter of the multipath radio signal may then be located via the set of paths.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 16, 2020
    Inventors: Javier Perez-Ramirez, David Israel Gonzalez Aguirre, Javier Felip Leon, Mikhail T. Galeev, Dave A. Cavalcanti
  • Patent number: 10416282
    Abstract: This disclosure relates to a method for radar signal detection, the method comprising: scanning a radio channel by a scanning filter in a first frequency subband to provide an incoming signal; detecting a potential radar signal in the incoming signal based on prior knowledge of a structure of the radar signal; and if the potential radar signal is detected, keeping the scanning filter in the first frequency subband; if no potential radar signal is detected, adjusting the scanning filter to a second frequency subband.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 17, 2019
    Assignee: Intel Corporation
    Inventor: Javier Perez-Ramirez
  • Patent number: 10349060
    Abstract: An example apparatus for encoding video frames includes a receiver to receive video frames and a heat map from a camera and expected object regions from a video database. The apparatus also includes a region of interest (ROI) map generator to detect a region of interest in a video frame based on the expected object regions. The ROI map generator can also detect a region of interest in the video frame based on the heat map. The ROI map generator can then generate an ROI map based on the detected regions of interest. The apparatus further includes a parameter adjuster to adjust an encoding parameter based on the ROI map. The apparatus also further includes a video encoder to encode the video frame using the adjusted encoding parameter.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 9, 2019
    Assignee: Intel Corporation
    Inventors: Srenivas Varadarajan, Yiting Liao, Vallabhajosyula S. Somayazulu, Omesh Tickoo, Ibrahima J. Ndiour, Javier Perez-Ramirez
  • Patent number: 10239984
    Abstract: The invention relates to a production process for polyamines through condensation of aromatic amines with formaldehyde employing at least one solid zeolite catalyst partially or fully ion-exchanged to the protonic form which has been A) alkaline-treated, wherein the alkaline treatment is in case of BEA zeolites carried out in the presence of a pore-directing agent and in case of zeolites other than BEA zeolites in the presence or absence of a pore-directing agent, or B) acid-treated without any alkaline treatment preceding or following said acid treatment, wherein the acid treatment is effected with an organic acid with chelating function.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: March 26, 2019
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Jürgen Arras, Stefan Wershofen, Javier Pérez-Ramirez, Tobias Caesar Keller
  • Publication number: 20190050697
    Abstract: Automated methods and apparatuses for charging or fueling a vehicle, include, in embodiments, the CA/AD system of a vehicle, having a charging or fueling port, being provided with an apparatus having a plurality of tags and a controller. The plurality of tags are respectively installed at a plurality of positions on a top face of a roof of the vehicle. The controller is provided to the CA/AD system. The controller is configured to cause information about the charging or fueling port to be transmitted (e.g., via LED tags) to the charging or fueling system of the charging or fueling station. The charging or fueling system, provided with a charging connector or fueling nozzle, and an imaging device, uses at least the information about the charging or fueling port and the plurality of positions of the plurality tags to determine a location of the charging or fueling port of the vehicle, to charge or fuel the vehicle.
    Type: Application
    Filed: June 27, 2018
    Publication date: February 14, 2019
    Inventors: Rufeng Meng, Javier Perez-Ramirez, Hassnaa Moustafa
  • Publication number: 20190043261
    Abstract: An example apparatus for depth sensing includes an image data receiver to receive image data from a communication camera and an augmented reality (AR) camera. The apparatus also includes a modulated light detector to detect one or more modulated lights in the image data from the communication camera. The apparatus further includes a representation generator to generate a visual representation of a local image region for each of the detected modulated lights. The apparatus includes a region matcher to match the visual representation for each of the detected modulated lights with a region in the image data received from the AR camera. The apparatus also further includes a distance estimator to estimate a distance between a dual camera receiver and the one or more modulated lights based on a disparity between a position of the visual representation and a position of the matched region in the image data.
    Type: Application
    Filed: March 1, 2018
    Publication date: February 7, 2019
    Applicant: INTEL CORPORATION
    Inventors: Javier Perez-Ramirez, Spencer Markowitz, Zoran Zivkovic
  • Publication number: 20190007678
    Abstract: An example apparatus for encoding video frames includes a receiver to receive events from a dynamic vision sensor and a video frame from an image sensor. The apparatus also includes a heat map generator to generate a heat map based on the received events. The apparatus further includes a region of interest (ROI) map generator generate a ROI map based on the heat map. The apparatus includes a parameter adjuster to adjust an encoding parameter based on the ROI map. The apparatus also further includes a video encoder to encode the video frame using the adjusted parameter.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 3, 2019
    Applicant: INTEL CORPORATION
    Inventors: Javier Perez-Ramirez, Srenivas Varadarajan, Yiting Liao, Vallabhajosyula S. Somayazulu, Omesh Tickoo, Ibrahima J. Ndiour
  • Publication number: 20190007690
    Abstract: An example apparatus for encoding video frames includes a receiver to receive video frames and a heat map from a camera and expected object regions from a video database. The apparatus also includes a region of interest (ROI) map generator to detect a region of interest in a video frame based on the expected object regions. The ROI map generator can also detect a region of interest in the video frame based on the heat map. The ROI map generator can then generate an ROI map based on the detected regions of interest. The apparatus further includes a parameter adjuster to adjust an encoding parameter based on the ROI map. The apparatus also further includes a video encoder to encode the video frame using the adjusted encoding parameter.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 3, 2019
    Applicant: INTEL CORPORATION
    Inventors: Srenivas Varadarajan, Yiting Liao, Vallabhajosyula S. Somayazulu, Omesh Tickoo, Ibrahima J. Ndiour, Javier Perez-Ramirez