Patents by Inventor Nirav Rajendra Patel

Nirav Rajendra Patel 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: 20200159027
    Abstract: The disclosed head-mounted display may include (1) a display unit configured to display computer-generated imagery to a user and (2) a housing that retains the display unit. When the head-mounted display is mounted on the user's head and the display unit is positioned in a forward field of view of the user, the display unit may obstruct at least a portion of the user's forward field of view, and the housing may be dimensioned to provide the user with a substantially unobstructed peripheral view of a real-world environment of the user. Various other methods, systems, and devices are also disclosed.
    Type: Application
    Filed: April 24, 2019
    Publication date: May 21, 2020
    Inventors: Nirav Rajendra Patel, Yi-Chen Kuo
  • Patent number: 10659110
    Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: May 19, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
  • Patent number: 10652539
    Abstract: A video coder is configured to encode video data, wherein one or more pixels of the encoded video data is used to signal in-band a luminance adjustment value for configuring an overall luminance of the displayed video data. In addition, the video data for pixels of the video data are scaled based upon the luminance adjustment value to compensate for the changed overall luminance. By signaling the luminance adjustment value in-band as part of the encoded video data, the need for a separate control channel is reduced, while also simplifying synchronization between the luminance adjustment value and the frame of video data to which it applies. The display may extract and parse the signaled luminance adjustment value to control a parameter of the display device (e.g., driving voltage, supply current, duty cycle, etc.) to achieve the overall luminance level indicated by the luminance adjustment value.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: May 12, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Nirav Rajendra Patel, Lyle David Bainbridge, Sandro Pintz
  • Patent number: 10565941
    Abstract: An electronic display includes a display panel that operates in a single display mode to provide a single display, or a dual display mode to provide two displays separated by an inactive region. The electronic display includes the display panel and a panel driver. The display panel includes a left pixel region, a right pixel region, and a middle pixel region between the left and right pixel regions. In the single display mode of the electronic display, the panel driver provides first gate signals generated from first input data to the left, right, and middle pixel regions. In a dual display mode, the panel driver provides second gate signals generated from second input data to the left and right pixel regions. The first input data has a first resolution that is larger than a second resolution of the second input data.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: February 18, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Cheonhong Kim, Nirav Rajendra Patel
  • Patent number: 10522094
    Abstract: Disclosed is a liquid crystal display device comprising a liquid crystal layer including a plurality of liquid crystals in a pixel area and a backlight unit coupled to the liquid crystal layer. A plurality of pixels are disposed in the pixel area. The backlight unit is configured to project light towards the entire pixel area of the liquid crystal layer during an illumination time period of a frame time, and not to project the light towards any of the pixel area of the liquid crystal layer during a non-illumination time period of the frame time. By enabling the backlight unit for the illumination time period less than the frame time, image streaking and latency can be reduced.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: December 31, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Nirav Rajendra Patel, Jianru Shi
  • Patent number: 10488223
    Abstract: A method of calibrating a first inertial measurement unit (IMU) of a mobile electronic device inserted in a headset includes, when a controller having a second IMU is mounted to the headset: performing a calibration procedure to generate first calibration data for the first IMU and second calibration data for the second IMU; receiving the second calibration data from the controller; determining a difference between the first calibration data and the second calibration data received from the controller; and calibrating the first IMU in accordance with the difference between the first calibration data and the second calibration data. The method further includes, when the controller has been removed from the headset after performing the calibrating, executing a virtual-reality application, comprising generating images based in part on motion data generated by the calibrated first IMU and displaying the images. The motion data corresponds to motions of the mobile electronic device.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: November 26, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Phillip Yee, Julian James Hammerstein, Ryan Hamilton Brown, Nirav Rajendra Patel
  • Patent number: 10433307
    Abstract: A head-mounted display (HMD) is wirelessly coupled to a console or a relay depending on the relative positions of the HMD, the console, and the relay. The HMD communicates wirelessly with the console using a beam that is oriented in a particular direction. As the position of the HMD changes, the quality of the communication link between the HMD and the console may degrade. In response to the degradation, the HMD forms a communication link with a relay, which operates as an intermediary between the HMD and the console. The relay communicates with the HMD over a dedicated communication channel that is isolated from the communication channel over which the relay communicates with the console.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 1, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Qu, Hongyu Zhou, Ganesh Venkatraman, Ryan Hamilton Brown, Lyle David Bainbridge, Sam Padinjaremannil Alex, Ali Yazdan, Nirav Rajendra Patel
  • Patent number: 10417832
    Abstract: A virtual reality system and a display device that can be used, for example, as part of the virtual reality system. The display device can have more than one data driver, such as an even row data driver and an odd row data driver. The display device can have a configurable resolution such that one region of the display device operates at full resolution while another region of the display device operates at a reduced resolution. The virtual reality system can also track an eye gaze and adjust the full resolution region of the display device to track the eye gaze.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: September 17, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Nirav Rajendra Patel
  • Patent number: 10373556
    Abstract: A display device comprises a display panel having a plurality of pixels for emitting light disposed on an active area of the display panel. The pixels may be grouped into a plurality of subsets, each subset of pixels coupled to a corresponding power line. The subsets of pixels may be programmed and operated in succession in a rolling configuration. The power line may be configured to provide a low supply voltage to turn on the corresponding subset of pixels, or a high supply voltage to turn off the corresponding subset of pixels. By turning off each subset of pixels when the subset is not being programmed or controlled to emit light, a picture quality of the display may potentially be improved, by preventing leakages or tailing effects in the non-emitting pixels when of the display.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: August 6, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Nirav Rajendra Patel, Evan M. Richards
  • Patent number: 10360857
    Abstract: Disclosed is a liquid crystal display device comprising a liquid crystal layer including a plurality of liquid crystals in a pixel area and a backlight unit coupled to the liquid crystal layer. A plurality of pixels are disposed in the pixel area. The backlight unit is configured to project light towards the entire pixel area of the liquid crystal layer during an illumination time period of a frame time, and not to project the light towards any of the pixel area of the liquid crystal layer during a non-illumination time period of the frame time. By enabling the backlight unit for the illumination time period less than the frame time, image streaking and latency can be reduced.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 23, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Nirav Rajendra Patel, Jianru Shi
  • Patent number: 10326500
    Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: June 18, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
  • Patent number: 10311824
    Abstract: A display device that includes a liquid crystal (LC) panel, a back light unit (BLU), a first data driver, and a second data driver. The back light unit (BLU) emits light during an illumination portion of a frame period and does not emit light during a remaining portion of the frame period. A first data driver writes data to a first portion of the pixels of the LC panel. A second data driver writes data to a second portion of the pixels of the LC panel. The first and second data drivers write data at an overlapping time during a write portion of the frame period. The write portion overlaps in time with the remaining portion of the frame period during which the BLU does not emit light.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: June 4, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Nirav Rajendra Patel
  • Patent number: 10290156
    Abstract: A virtual reality system and a display device that can be used, for example, as part of the virtual reality system. The display device can have more than one data driver, such as an even row data driver and an odd row data driver. The display device can have a configurable resolution such that one region of the display device operates at full resolution while another region of the display device operates at a reduced resolution. The virtual reality system can also track an eye gaze and adjust the full resolution region of the display device to track the eye gaze.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: May 14, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Nirav Rajendra Patel
  • Patent number: 10255881
    Abstract: A display calibration system determines compensation factors for each subpixel in an electronic display to compensate for non-uniformity due to aging of the electronic display. The system takes a first measurement of the display at an input setting, instructs the display to operate an input sequence, and takes a second measurement of the display at the same input setting. The system determines one or more compensation factors for each subpixel of the electronic display based on the first measurement, the second measurement, and one or more previous characterizations of a similar subpixel on a similar display. A compensation matrix may be stored in memory on an HMD that houses the electronic display, or it may be stored in the cloud and accessed when the display is operating.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 9, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Nirav Rajendra Patel, Evan M. Richards
  • Patent number: 10191565
    Abstract: An apparatus for aligning coordinate systems of interacting devices includes an interface circuit configured to receive a sensor signal from an accelerometer of a device. The sensor signal represents an impact on the device responsive to tapping of the device and a second device. A second interface circuit is configured to receive a second sensor signal from a second accelerometer of the second device. The second sensor signal represents an impact on the second device responsive to the tapping. A calibration engine is configured to determine a direction of the impact represented by the sensor signal and a direction of the second impact represented by the second sensor signal. The calibration engine is configured to align at least one of a coordinate system of the device or a second coordinate system of the second device based on the direction of the impact and the second impact.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: January 29, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Nirav Rajendra Patel
  • Patent number: 10148324
    Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: December 4, 2018
    Assignee: Facebook Technologies, LLC
    Inventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel
  • Publication number: 20180309500
    Abstract: A head-mounted display (HMD) is wirelessly coupled to a console or a relay depending on the relative positions of the HMD, the console, and the relay. The HMD communicates wirelessly with the console using a beam that is oriented in a particular direction. As the position of the HMD changes, the quality of the communication link between the HMD and the console may degrade. In response to the degradation, the HMD forms a communication link with a relay, which operates as an intermediary between the HMD and the console. The relay communicates with the HMD over a dedicated communication channel that is isolated from the communication channel over which the relay communicates with the console.
    Type: Application
    Filed: April 20, 2017
    Publication date: October 25, 2018
    Inventors: Qi Qu, Hongyu Zhou, Ganesh Venkatraman, Ryan Hamilton Brown, Lyle David Bainbridge, Sam Padinjaremannil Alex, Ali Yazdan, Nirav Rajendra Patel
  • Patent number: 10078922
    Abstract: A virtual reality system and a display device that can be used, for example, as part of the virtual reality system. The display device can have more than one data driver, such as an even row data driver and an odd row data driver. The display device can have a configurable resolution such that one region of the display device operates at full resolution while another region of the display device operates at a reduced resolution. The virtual reality system can also track an eye gaze and adjust the full resolution region of the display device to track the eye gaze.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: September 18, 2018
    Assignee: Oculus VR, LLC
    Inventor: Nirav Rajendra Patel
  • Patent number: 10065111
    Abstract: A system maps a user's interaction with a game controller to predefined hand positions that can be used in gaming and multimedia applications. A game controller with sensors receives user input with capacitive sensors and generates sensor outputs. A controller modeling module receives the sensor outputs and trains a model based on the outputs. The trained kinematic model maps the sensor outputs to one or more of a plurality of predefined hand positions. When an application requests the status of a user's hand position, e.g., through an API, the mapped hand position is sent to the application.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 4, 2018
    Assignee: Oculus VR, LLC
    Inventors: Nirav Rajendra Patel, Palmer Freeman Luckey, Julian Hammerstein, Chris Dycus, Jason Higgins, David Maurice Moore
  • Publication number: 20180234137
    Abstract: Embodiments of the present disclosure support a head-mounted display (HMD) wirelessly coupled to a console. The HMD includes a positional tracking system, a beam controller and a transceiver. The positional tracking system tracks position of the HMD and generates positional information describing the tracked position of the HMD. The transceiver communicates with a console via a wireless channel, in accordance with communication instructions, the communication instructions causing the transceiver to communicate over one directional beam of a plurality of directional beams. The beam controller determines a change in the positional information. Based on the change to the positional information, the beam controller determines a directional beam of the plurality of directional beams. The beam controller further generates the communication instructions identifying the determined directional beam, and provides the communication instructions to the transceiver.
    Type: Application
    Filed: November 20, 2017
    Publication date: August 16, 2018
    Inventors: Qi Qu, Ganesh Venkatraman, Hongyu Zhou, Ryan Hamilton Brown, Oskar Linde, Lyle David Bainbridge, Matthew James Devoe, Ali Yazdan, Sam Padinjaremannil Alex, Nirav Rajendra Patel