Patents by Inventor Ravish Mehra

Ravish Mehra 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: 10310610
    Abstract: A haptic device provides haptic sensation to a user. The haptic device comprises a haptic plate and a plurality of actuators. The haptic plate includes a center portion and an outer portion that circumscribes the center portion. The plurality of actuators is coupled to the outer portion of the haptic plate. Of the plurality of actuators, one or more actuators are configured to generate, in accordance with haptic instructions, a haptic wave that converges to a specific waveform at a specific region of the center portion of the haptic plate. The shape of the specific waveform and the location of the specific region on the center portion of the haptic plate are based in part on the haptic instructions.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: June 4, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Dustin Jeffery Gordon Krogstad, Cleveland-Joel Chavez Wilcox, Matthew Robert Schwab, Riccardo DeSalvo, David R. Perek, Ravish Mehra, Sean Jason Keller, Ian Andreas Marquez, Sabrina Monique Sandoval
  • Publication number: 20190158948
    Abstract: An audio system includes a transducer assembly, an audio sensor, and a controller. The transducer assembly is coupled to a back of an auricle of an ear of the user. The transducer assembly vibrates the auricle over a frequency range to cause the auricle to create an acoustic pressure wave in accordance with vibration instructions. The acoustic sensor detects the acoustic pressure wave at an entrance of the ear of the user. The controller dynamically adjusts a frequency response model based in part on the detected acoustic pressure wave, updates the vibration instructions using the adjusted frequency response model, and provides the updated vibration instructions to the transducer assembly.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 23, 2019
    Inventors: Antonio John Miller, Ravish Mehra
  • Publication number: 20190121432
    Abstract: A haptic device provides haptic sensation to a user. The haptic device comprises a haptic plate and a plurality of actuators. The haptic plate includes a center portion and an outer portion that circumscribes the center portion. The plurality of actuators is coupled to the outer portion of the haptic plate. Of the plurality of actuators, one or more actuators are configured to generate, in accordance with haptic instructions, a haptic wave that converges to a specific waveform at a specific region of the center portion of the haptic plate. The shape of the specific waveform and the location of the specific region on the center portion of the haptic plate are based in part on the haptic instructions.
    Type: Application
    Filed: October 19, 2017
    Publication date: April 25, 2019
    Inventors: Dustin Jeffery Gordon Krogstad, Cleveland-Joel Chavez Wilcox, Matthew Robert Schwab, Riccardo DeSalvo, David R. Perek, Ravish Mehra, Sean Jason Keller, Ian Andreas Marquez, Sabrina Monique Sandoval
  • Patent number: 10231046
    Abstract: An audio system includes a transducer assembly, an audio sensor, and a controller. The transducer assembly is coupled to a back of an auricle of an ear of the user. The transducer assembly vibrates the auricle over a frequency range to cause the auricle to create an acoustic pressure wave in accordance with vibration instructions. The acoustic sensor detects the acoustic pressure wave at an entrance of the ear of the user. The controller dynamically adjusts a frequency response model based in part on the detected acoustic pressure wave, updates the vibration instructions using the adjusted frequency response model, and provides the updated vibration instructions to the transducer assembly.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: March 12, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Antonio John Miller, Ravish Mehra
  • Patent number: 10231053
    Abstract: Embodiments relate to cancelling crosstalk vibrations due to the use of multiple bone conduction transducers by modifying bone conduction signals sent to the bone conduction transducers. The bone conduction signals are modified using an adaptive filter with its coefficients adjusted based on the vibrations generated at a bone conduction transducer and crosstalk vibrations sensed at a vibration sensor assembly. The bone conduction transducer for generating the calibration vibrations and the vibration sensor assembly for detecting the crosstalk vibrations may be placed at opposite sides of the user's head.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: March 12, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Ravish Mehra, Antonio John Miller
  • Publication number: 20190058938
    Abstract: An audio system includes a transducer assembly, an audio sensor, and a controller. The transducer assembly is coupled to a back of an auricle of an ear of the user. The transducer assembly vibrates the auricle over a frequency range to cause the auricle to create an acoustic pressure wave in accordance with vibration instructions. The acoustic sensor detects the acoustic pressure wave at an entrance of the ear of the user. The controller dynamically adjusts a frequency response model based in part on the detected acoustic pressure wave, updates the vibration instructions using the adjusted frequency response model, and provides the updated vibration instructions to the transducer assembly.
    Type: Application
    Filed: August 18, 2017
    Publication date: February 21, 2019
    Inventors: Antonio John Miller, Ravish Mehra
  • Patent number: 10038966
    Abstract: A virtual reality (VR) system simulates sounds that a user of the VR system perceives to have originated from sources at desired virtual locations of the VR system. The simulated sounds are generated based on personalized head-related transfer functions (HRTF) of the user that are constructed by applying machine-learned models to a set of anatomical features identified for the user. The set of anatomical features may be identified from images of the user captured by a camera. In one instance, the HRTF is represented as a reduced set of parameters that allow the machine-learned models to capture the variability in HRTF across individual users while being trained in a computationally-efficient manner.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: July 31, 2018
    Assignee: Oculus VR, LLC
    Inventor: Ravish Mehra
  • Patent number: 10013064
    Abstract: A haptic device configured to provide haptic feedback to a user. In one aspect, a user or part of a user is located on the haptic device including actuators and damping elements. A haptic feedback wave is generated by an actuator and propagated to the user or part of the user on the haptic device. Damping elements receive the haptic feedback wave and suppress the haptic feedback wave to reduce a reflection thereof.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: July 3, 2018
    Assignee: Oculus VR, LLC
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Patent number: 9971410
    Abstract: An actuator configured to provide haptic feedback to a user. The actuator is located on a plate and is configured to apply various excitations to the plate to generate a mechanical wave propagating in the controlled direction. The excitations can be a translational motion of the actuator (or a portion of the actuator) in two or three perpendicular axes. Alternatively, the excitations can be a non-translational motion (e.g., rotation about an axis) of the actuator (or a portion of the actuator). By generating the mechanical wave traveling in the controlled direction, loss of energy due to scattering of the mechanical wave can be obviated.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: May 15, 2018
    Assignee: Oculus VR, LLC
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Publication number: 20180059795
    Abstract: A haptic device configured to provide haptic feedback to a user. In one aspect, a user or part of a user is located on the haptic device including actuators and damping elements. A haptic feedback wave is generated by an actuator and propagated to the user or part of the user on the haptic device. Damping elements receive the haptic feedback wave and suppress the haptic feedback wave to reduce a reflection thereof.
    Type: Application
    Filed: October 19, 2017
    Publication date: March 1, 2018
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Patent number: 9906884
    Abstract: Methods, systems, and computer readable media for utilizing adaptive rectangular decomposition (ARD) to perform head-related transfer function (HRTF) simulations are disclosed herein. According to one method, the method includes obtaining a mesh model representative of head and ear geometry of a listener entity and segmenting a simulation domain of the mesh model into a plurality of partitions. The method further includes conducting an ARD simulation on the plurality of partitions to generate simulated sound pressure signals within each of the plurality of partitions and processing the simulated sound pressure signals to generate at least one HRTF that is customized for the listener entity.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: February 27, 2018
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Alok Namdeo Meshram, Dinesh Manocha, Ravish Mehra, Enrique Dunn, Jan-Michael Frahm, Hongsheng Yang
  • Patent number: 9851799
    Abstract: A haptic device configured to provide haptic feedback to a user. In one aspect, a user or part of a user is located on the haptic device including actuators and damping elements. A haptic feedback wave is generated by an actuator and propagated to the user or part of the user on the haptic device. Damping elements receive the haptic feedback wave and suppress the haptic feedback wave to reduce a reflection thereof.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: December 26, 2017
    Assignee: Oculus VR, LLC
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Publication number: 20170351333
    Abstract: An actuator configured to provide haptic feedback to a user. The actuator is located on a plate and is configured to apply various excitations to the plate to generate a mechanical wave propagating in the controlled direction. The excitations can be a translational motion of the actuator (or a portion of the actuator) in two or three perpendicular axes. Alternatively, the excitations can be a non-translational motion (e.g., rotation about an axis) of the actuator (or a portion of the actuator). By generating the mechanical wave traveling in the controlled direction, loss of energy due to scattering of the mechanical wave can be obviated.
    Type: Application
    Filed: August 24, 2017
    Publication date: December 7, 2017
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Patent number: 9824166
    Abstract: Methods, systems, and computer readable media for utilizing parallel adaptive rectangular decomposition (ARD) to perform acoustic simulations are disclosed herein. According to one method, the method includes assigning, to each of a plurality of processors in a central processing unit (CPU) cluster, ARD processing responsibilities associated with one or more of a plurality of partitions of an acoustic space and determining, by each processor, pressure field data corresponding to the one or more assigned partitions. The method further includes transferring, by each processor, the pressure field data to at least one remote processor that is assigned to a partition that shares an interface with at least one partition assigned to the transferring processor and receiving, by each processor from the at least one remote processor, forcing term values that have been derived by the at least one remote processor using the pressure field data.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: November 21, 2017
    Assignee: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Nicolas Manuel Morales, Ravish Mehra, Dinesh Manocha
  • Patent number: 9778746
    Abstract: An actuator configured to provide haptic feedback to a user. The actuator is located on a plate and is configured to apply various excitations to the plate to generate a mechanical wave propagating in the controlled direction. The excitations can be a translational motion of the actuator (or a portion of the actuator) in two or three perpendicular axes. Alternatively, the excitations can be a non-translational motion (e.g., rotation about an axis) of the actuator (or a portion of the actuator). By generating the mechanical wave traveling in the controlled direction, loss of energy due to scattering of the mechanical wave can be obviated.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 3, 2017
    Assignee: Oculus VR, LLC
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Patent number: 9711126
    Abstract: The subject matter described herein includes an approach for wave-based sound propagation suitable for large, open spaces spanning hundreds of meters, with a small memory footprint. The scene is decomposed into disjoint rigid objects. The free-field acoustic behavior of each object is captured by a compact per-object transfer-function relating the amplitudes of a set of incoming equivalent sources to outgoing equivalent sources. Pairwise acoustic interactions between objects are cornuted analytically, yielding compact inter-object transfer functions. The global sound field accounting for all orders of interaction is computed using these transfer functions. The runtime system uses fast summation over the outgoing equivalent source amplitudes for all objects to auralize the sound field at a moving listener in real-time. We demonstrate realistic acoustic effects such as diffraction, low-passed sound behind obstructions, focusing, scattering, high-order reflections, and echoes, on a variety of scenes.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 18, 2017
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Ravish Mehra, Dinesh Manocha
  • Publication number: 20170092086
    Abstract: An actuator configured to provide haptic feedback to a user. The actuator is located on a plate and is configured to apply various excitations to the plate to generate a mechanical wave propagating in the controlled direction. The excitations can be a translational motion of the actuator (or a portion of the actuator) in two or three perpendicular axes. Alternatively, the excitations can be a non-translational motion (e.g., rotation about an axis) of the actuator (or a portion of the actuator). By generating the mechanical wave traveling in the controlled direction, loss of energy due to scattering of the mechanical wave can be obviated.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 30, 2017
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Publication number: 20170090578
    Abstract: A haptic device configured to provide haptic feedback to a user. In one aspect, a user or part of a user is located on the haptic device including actuators and damping elements. A haptic feedback wave is generated by an actuator and propagated to the user or part of the user on the haptic device. Damping elements receive the haptic feedback wave and suppress the haptic feedback wave to reduce a reflection thereof.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 30, 2017
    Inventors: Sean Jason Keller, Tristan Thomas Trutna, Ravish Mehra, Christoph Omid Hohnerlein, Elia Gatti, Riccardo DeSalvo, David R. Perek
  • Patent number: 9560439
    Abstract: Methods, systems, and computer readable media for supporting source or listener directivity in a wave-based sound propagation model are disclosed. According to one method, the method includes computing, prior to run-time, one or more sound fields associated with a source or listener position and modeling, at run-time and using the one or more sound fields and a wave-based sound propagation model, source or listener directivity in an environment.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: January 31, 2017
    Assignee: The University of North Carolina at Chapel Hills
    Inventors: Ravish Mehra, Lakulish Shailesh Antani, Dinesh Manocha
  • Publication number: 20160171131
    Abstract: Methods, systems, and computer readable media for utilizing parallel adaptive rectangular decomposition (ARD) to perform acoustic simulations are disclosed herein. According to one method, the method includes assigning, to each of a plurality of processors in a central processing unit (CPU) cluster, ARD processing responsibilities associated with one or more of a plurality of partitions of an acoustic space and determining, by each processor, pressure field data corresponding to the one or more assigned partitions. The method further includes transferring, by each processor, the pressure field data to at least one remote processor that is assigned to a partition that shares an interface with at least one partition assigned to the transferring processor and receiving, by each processor from the at least one remote processor, forcing term values that have been derived by the at least one remote processor using the pressure field data.
    Type: Application
    Filed: June 18, 2015
    Publication date: June 16, 2016
    Inventors: Nicolas Manuel Morales, Ravish Mehra, Dinesh Manocha