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).

  • Patent number: 10135530
    Abstract: Optical wireless communication techniques are described and claimed. In one embodiment, the disclosure relates to method and apparatus to provide optical signaling with visible light having variable pulse position modulation (VPPM). The optical signal includes a Start Frame Delimiter (SFD) which indicates beginning of an asynchronous optical signaling. The VPPM signaling includes a lower frequency time varying amplitude component that when subsampled by a low frame rate camera results in alias induced flicker or blinking. Such signals are quickly recognizable as signals with modulated data. In another embodiment, the disclosure provides a system, device and method for decoding a Start Frame Delimiter (SFD) to indicate arrival of incoming VPPM optical data.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: November 20, 2018
    Assignee: Intel Corporation
    Inventors: Richard D. Roberts, Javier Perez-Ramirez, Parmoon Seddighrad, Roni Abiri
  • Publication number: 20180198525
    Abstract: Optical wireless communication techniques are described and claimed. In one embodiment, the disclosure relates to method and apparatus to provide optical signaling with visible light having variable pulse position modulation (VPPM). The optical signal includes a Start Frame Delimiter (SFD) which indicates beginning of an asynchronous optical signaling. The VPPM signaling includes a lower frequency time varying amplitude component that when subsampled by a low frame rate camera results in alias induced flicker or blinking. Such signals are quickly recognizable as signals with modulated data. In another embodiment, the disclosure provides a system, device and method for decoding a Start Frame Delimiter (SFD) to indicate arrival of incoming VPPM optical data.
    Type: Application
    Filed: November 13, 2017
    Publication date: July 12, 2018
    Applicant: Intel Corporation
    Inventors: Richard D. Roberts, Javier Perez-Ramirez, Parmoon Seddighrad, Roni Abiri
  • Publication number: 20180095160
    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: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventor: Javier Perez-Ramirez
  • Publication number: 20180098215
    Abstract: Various systems and methods for identifying and performing authentication of visible light communications using optical camera communication techniques are described. In an example, an electronic processing system to authenticate a particular light emitting source includes electronic operations for: detecting, from image data, modulated light data emitted from a light emitting object, where the image data depicts the light emitting object, and where the image data is captured with an image sensor (e.g., of a camera); identifying, from the image data, the light emitting object as a source of the modulated light data; receiving an indication to select the light emitting object as an authenticated source of the modulated light data; and performing a command to process the modulated light data from the authenticated source, with the command performed in response to the indication to select the light emitting object as the authenticated source of the modulated light data.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Richard D. Roberts, Parmoon Seddighrad, Javier Perez-Ramirez, Roni Abiri
  • Patent number: 9923638
    Abstract: Optical signaling is implemented by modulating visible light with variable pulse position modulation (VPPM). VPPM is a composite waveform and its optical signal includes a Start Frame Delimiter (SFD) which indicates start of optical signaling. To identify modulated lights, the duty cycle is periodically changed in the waveform to induce an AM envelope at a frequency higher than the response of the human eye. The signal is then sampled via a camera producing an alias frequency that produces noticeable blinking. Because the communication is asynchronous, the desired camera frame rate (fc) in relationship to the modulation bit rate timing clock (or symbol rate, fs) is only approximate. Consequently, a frequency offset develops between the camera frame rate (fc) and the symbol rate (fs) in transmission of long packets. The disclosed embodiments provide a detection algorithm, system and apparatus to provide clock offset tracking and correction.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: March 20, 2018
    Assignee: Intel Corporation
    Inventors: Javier Perez-Ramirez, Richard D. Roberts
  • Patent number: 9866323
    Abstract: Optical wireless communication techniques are described and claimed. In one embodiment, the disclosure relates to method and apparatus to provide optical signaling with visible light having variable pulse position modulation (VPPM). The optical signal includes a Start Frame Delimiter (SFD) which indicates beginning of an asynchronous optical signaling. The VPPM signaling includes a lower frequency time varying amplitude component that when subsampled by a low frame rate camera results in alias induced flicker or blinking. Such signals are quickly recognizable as signals with modulated data. In another embodiment, the disclosure provides a system, device and method for decoding a Start Frame Delimiter (SFD) to indicate arrival of incoming VPPM optical data.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: January 9, 2018
    Assignee: Intel Corporation
    Inventors: Richard D. Roberts, Javier Perez-Ramirez, Parmoon Seddighrad, Roni Abiri
  • Publication number: 20180002271
    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: Application
    Filed: June 26, 2017
    Publication date: January 4, 2018
    Inventors: Jürgen Arras, Tobias Cäsar Keller, Javier Pérez-Ramírez
  • Publication number: 20180003797
    Abstract: A communication device can be configured to detect radar signals within an operating channel. The communication device can include a mixer, filter, scanning and spreading circuit and a radar signal detector. The mixer can be configured to modulate a received communication signal based on an oscillating signal to generate a modulated signal. The filter can have a first bandwidth and be configured to filter the modulated signal. The scanning and spreading circuit can be configured to control the oscillating signal to scan an operating channel having a second bandwidth. The second bandwidth can be greater than the first bandwidth. The radar signal detector can be configured to detect a radar signal within the scanned operating channel.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Inventors: Javier Perez-Ramirez, Minyoung Park, Richard D. Roberts
  • Publication number: 20170187455
    Abstract: Optical wireless communication techniques are described and claimed. In one embodiment, the disclosure relates to method and apparatus to provide optical signaling with visible light having variable pulse position modulation (VPPM). The optical signal includes a Start Frame Delimiter (SFD) which indicates beginning of an asynchronous optical signaling. The VPPM signaling includes a lower frequency time varying amplitude component that when subsampled by a low frame rate camera results in alias induced flicker or blinking. Such signals are quickly recognizable as signals with modulated data. In another embodiment, the disclosure provides a system, device and method for decoding a Start Frame Delimiter (SFD) to indicate arrival of incoming VPPM optical data.
    Type: Application
    Filed: April 1, 2016
    Publication date: June 29, 2017
    Applicant: Intel Corporation
    Inventors: Richard D. Roberts, Javier Perez-Ramirez, Parmoon Seddighrad, Roni Abiri
  • Publication number: 20170158798
    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: Application
    Filed: July 2, 2015
    Publication date: June 8, 2017
    Inventors: Jürgen Arras, Stefan Wershofen, Javier Pérez-Ramirez, Tobias Caesar Keller
  • Publication number: 20170081187
    Abstract: A process for the production of chlorine by thermo-catalytic gas phase oxidation of hydrogen chloride and oxygen is described, the process comprising at least (1) a cerium oxide catalyst and (2) an adiabatic reaction cascade, containing at least two adiabatic stages connected in series with intermediate cooling, wherein the molar O2/HCl-ratio is equal or above 0.75 in any part of the cerium oxide catalyst beds.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Inventors: Timm SCHMIDT, Aurel WOLF, Oliver Felix-Karl SCHLÜTER, Thomas WESTERMANN, Cecilia MONDELLI, Javier PEREZ-RAMIREZ, Hary SOERIJANTO, Reinhard SCHOMAECKER, Detre TESCHNER, Robert SCHLOEGL
  • Publication number: 20140241976
    Abstract: A process for the production of chlorine by thermo-catalytic gas phase oxidation of hydrogen chloride gas with oxygen, in the presence of a catalyst, and separation of the chlorine from the reaction products comprising chlorine, hydrogen chloride, oxygen and water, characterized in that a) a cerium oxide is used as catalytically active component in the catalyst and b) the reaction gases are converted at the cerium oxide catalyst in one or more isothermic reaction zones, preferably in one or more tube bundle reactors, wherein the molar O2/HCl-ratio is equal or above 0.75 in any part of the cerium oxide containing reaction zones.
    Type: Application
    Filed: July 2, 2012
    Publication date: August 28, 2014
    Inventors: Timm Schmidt, Aurel Wolf, Oliver Felix-Karl Schlüter, Thomas Westermann, Cecilia Mondelli, Javier Perez-Ramirez, Hary Soerijanto, Reinhard Schomäcker, Detre Tescher, Robert Schlögl
  • Publication number: 20140205533
    Abstract: A process for the production of chlorine by thermo-catalytic gas phase oxidation of hydrogen chloride and oxygen is described, the process comprising at least (1) a cerium oxide catalyst and (2) an adiabatic reaction cascade, containing at least two adiabatic stages connected in series with intermediate cooling, wherein the molar O2/HCl-ratio is equal or above 0.75 in any part of the cerium oxide catalyst beds.
    Type: Application
    Filed: July 2, 2012
    Publication date: July 24, 2014
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Timm Schmidt, Aurel Wolf, Oliver Felix-Karl Schlüter, Thomas Westermann, Cecilia Mondelli, Javier Perez-Ramirez, Hary Soerijanto, Reinhard Schomäcker, Detre Teschner, Robert Schlögl
  • Publication number: 20060088469
    Abstract: The present invention relates to the preparation and activation of multimetallic zeolites loaded with transition metals for N2O abatement in tail-gases from different sources. The N2O-containing gas is brought in contact with a catalyst comprising Fe and a second, third, or any additional transition metal (Cu, Co, Ni, Mn, Cr, V), with a total metal content ranging from 0.1-1.0 wt. %, on a zeolite support (MFI or BEA) at 523-873 K. Not 10 only the combination and loading of metals, but also the method of incorporation in the zeolite and its activation is essential to obtain active and stable catalysts. The synergy between metals was observed in Fe—Cu, Fe—Co, and Fe—Co—Cu systems, but not with combinations of iron with other transition metals. The optimal catalysts show high N2O conversions (>80%) at temperatures <623 K and stable behaviour for >2000 hours in pilot-scale tests with a zeolite-coated monolithic reactor.
    Type: Application
    Filed: November 25, 2002
    Publication date: April 27, 2006
    Applicant: Yara International ASA
    Inventor: Javier Perez-Ramirez