Patents by Inventor Subhash Chandra

Subhash Chandra 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: 10935641
    Abstract: A distance measurement system includes a light transmitter to generate a modulated light signal, a light sensor to generate measurement signals from reflected light among four quad phase angles with respect to a phase of the generated light signal, and a controller. The controller selects a first set of quad phase angles, and generates first measurement signals at the quad phase angles of the first set. Based on the first measurement signals, the controller computes a first phase angle between the generated light signal and the reflected light signal, generates a second set of quad phase angles based on the first phase angle, and generates second measurement signals at the quad phase angles of the second set. Further, based on the second measurement signals, the controller computes a second phase angle between the generated light signal and the reflected light signal and calculates a distance using the second phase angle.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 2, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Subhash Chandra Venkata Sadhu, Bharath Patil
  • Publication number: 20210041541
    Abstract: A three dimensional time of flight (TOF) camera includes a transmitter and a receiver. The transmitter is configured to generate an electrical transmit signal at a plurality of frequencies over an integration time period and generate a transmit optical waveform corresponding with the electrical transmit signal. The receiver is configured to receive a reflected optical waveform that is the transmit optical waveform reflected off of an object, integrate the reflected optical waveform over the integration time period, and determine a distance to the target object based on a TOF of the optical waveform. The integration time period includes exposure time periods. A length of each of the exposure time periods corresponds to one of the frequencies. The TOF is determined based on a correlation of the electrical transmit signal and the return optical waveform utilizing a correlation function with respect to the integration time period.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Inventors: Subhash Chandra Venkata SADHU, Bharath PATIL, Jaiganesh BALAKRISHNAN
  • Patent number: 10852402
    Abstract: A three dimensional time of flight (TOF) camera includes a transmitter and a receiver. The transmitter is configured to generate an electrical transmit signal at a plurality of frequencies over an integration time period and generate a transmit optical waveform corresponding with the electrical transmit signal. The receiver is configured to receive a reflected optical waveform that is the transmit optical waveform reflected off of an object, integrate the reflected optical waveform over the integration time period, and determine a distance to the target object based on a TOF of the optical waveform. The integration time period includes exposure time periods. A length of each of the exposure time periods corresponds to one of the frequencies. The TOF is determined based on a correlation of the electrical transmit signal and the return optical waveform utilizing a correlation function with respect to the integration time period.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 1, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Subhash Chandra Venkata Sadhu, Bharath Patil, Jaiganesh Balakrishnan
  • Publication number: 20200374603
    Abstract: A content interaction system and method allow a user to simultaneously interact with a piece of content using three, four or five senses (such as sound, sight and smell in one example) of the user. In one embodiment, the content interaction system may have a plurality of devices wherein the user may integrate one or more of the devices together.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventors: Chamli Tennakoon, Subhash Chandra, Amit Goenka
  • Patent number: 10841342
    Abstract: Disclosed are various embodiments that related to rendering a data driven user interface used to configure device profiles in an enterprise device management environment. In some examples, the enterprise device management environment can include a platform messaging service and a platform specific adapter. In one example, a system can receive a request to generate a device profile for a platform. The system can render a data driven user interface for configuring the device profile based on a definition file. The system can also receive input of a value for a user interface element and retrieve the values from the other user interface elements. The system can generate the device profile based on a translation of the values and transmit a command to a platform messaging service to facilitate an installation of the device profile in a mobile device. Various delivery methods for installing the device profile are disclosed.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: November 17, 2020
    Assignee: VMware, Inc.
    Inventors: Adam Stephen Rykowski, Adarsh Subhash Chandra Jain, Kai Chen, Daniel Quintas, Huda Osman
  • Publication number: 20200349282
    Abstract: Examples of multi-persona account management in client devices are described. A client device can host a personal workspace, such as for personal data and applications of a user, along with a separate alternate persona workspace for work-related data and applications of the user. The client device interfaces with a management computing environment to enroll in device management services and establish the alternate persona workspace on the client device. In one example, the client device queries a management computing environment to establish an alternate persona workspace in the client device. The client device then creates the alternate persona workspace in the client device based on a response from the management computing environment, associates an alternate persona account with the alternate persona workspace, and receives a notification to install at least one application in the alternate persona workspace from an account administration environment of the alternate persona account.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 5, 2020
    Inventors: Matthew Donald Miller, Adarsh Subhash Chandra Jain
  • Patent number: 10777589
    Abstract: A time-of-flight camera calibration system includes a time-of-flight camera and a calibration processor. The calibration processor is coupled to the time-of-flight camera. The calibration processor is configured to receive an input phase image captured by the time-of-flight camera, and generate a blurred phase image by applying a low pass filter to the input phase image. The calibration processor is also configured to generate a crosstalk correction matrix based on the blurred phase image, and provide the crosstalk correction matrix to the time-of-flight camera.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: September 15, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Venkata Subhash Chandra Sadhu, Vamshi Krishna Reddy Ani Reddy
  • Patent number: 10743087
    Abstract: A content interaction system and method allow a user to simultaneously interact with a piece of content using three, four or five senses (such as sound, sight and smell in one example) of the user. In one embodiment, the content interaction system may have a plurality of devices wherein the user may integrate one or more of the devices together.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: August 11, 2020
    Assignee: Z5X Global FZ-LLC
    Inventors: Chamli Tennakoon, Subhash Chandra, Amit Goenka
  • Publication number: 20200249331
    Abstract: Systems and methods are provided for imaging a surface via time of flight measurement. An illumination system includes an illumination driver and an illumination source and is configured to project modulated electromagnetic radiation to a point on a surface of interest. A sensor system includes a sensor driver and is configured to receive and demodulate electromagnetic radiation reflected from the surface of interest. A temperature sensor is configured to provide a measured temperature representing a temperature at one of the illumination driver and the sensor driver and located at a position remote from the one of the illumination driver and the sensor driver. A compensation component is configured to calculate a phase offset between the illumination system and the sensor system from at least the measured temperature and a model representing transient heat flow within the system.
    Type: Application
    Filed: April 22, 2020
    Publication date: August 6, 2020
    Inventors: Bharath Patil, Anjana Sharma, Subhash Chandra Venkata Sadhu, Ravishankar Ayyagari
  • Patent number: 10733322
    Abstract: Examples of multi-persona account management in client devices are described. In one example, a client device can host a personal workspace, such as for personal data and applications of a user of the client device, along with a separate alternate persona workspace for work-related data and applications of the user. The client device interfaces with a management computing environment to enroll in device management services and establish an alternate persona workspace on the client device. The client device receives a token for the alternate persona workspace from the management computing environment, creates the alternate persona workspace, and installs an interface service in the alternate persona workspace. The client device also associates an alternate persona account with the alternate persona workspace using the token and returns a service identifier to the management computing environment.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: August 4, 2020
    Assignee: VMware, Inc.
    Inventors: Matthew Donald Miller, Adarsh Subhash Chandra Jain
  • Publication number: 20200233918
    Abstract: Examples described herein include systems and methods for dynamically determining a server for enrollment with a management system. An example method can include receiving user input at an application executing on a user device, such as a portal application that provides access to and authentication for other applications through a catalogue of application icons. If the user input includes a first URL but that URL produces an error when used in conjunction with extensions associated with a management server, the application can automatically use extensions associated with an application-support server. The application can then retrieve a second URL from the application-support server and use it for performing enrollment steps at the management server. The enrollment steps can include authenticating the user at an identity service and determining the user's group ID for enrollment, for example.
    Type: Application
    Filed: January 23, 2019
    Publication date: July 23, 2020
    Inventors: Raghu Mummadi, David Jablonski, Gerard T. Murphy, Soorya Rajasoorya, Adarsh Subhash Chandra Jain, James Wells
  • Publication number: 20200225323
    Abstract: An optical transmitting system for distance measuring includes a modulation signal generator, a light source, and an illumination driver coupled to the modulation signal generator and the light source. The modulation signal generator is configured to generate a modulation signal. The light source is configured to generate an optical waveform with amplitude modulation corresponding with the modulation signal. The illumination driver is configured to drive the light source. The illumination driver includes a switch and a switch driver. The switch is configured to switch between an on state and an off state to drive the light source. The switch driver is configured to drive the switch between the on and off states. The switch driver includes a first inductor and a capacitor in series with the first inductor and the switch.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventor: Subhash Chandra Venkata Sadhu
  • Publication number: 20200209392
    Abstract: A time of flight (ToF) system includes a light source, a photosensor, a signal generator and a processor. The signal generator outputs a reference signal corresponding to a modulation function for modulated light and a modified transmitted light signal corresponding to a phase shift of the reference signal. The light source outputs the modified transmitted light signal and pixels in the photosensor receives its reflections off the scene. The reference signal is applied to the pixels and the processor determines a depth map for the scene based on values recorded by the pixels. In some examples, the phase shift is implemented using a phase locked loop controller. One or more component phases of the phase shift and an exposure time for each component phase are determined and output by the phase locked loop controller.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 2, 2020
    Inventors: Venkata Subhash Chandra SADHU, Bharath PATIL, Nithin JOSE, Shubham AGRAWAL
  • Publication number: 20200212091
    Abstract: A time-of-flight camera calibration system includes a time-of-flight camera and a calibration processor. The calibration processor is coupled to the time-of-flight camera. The calibration processor is configured to receive an input phase image captured by the time-of-flight camera, and generate a blurred phase image by applying a low pass filter to the input phase image. The calibration processor is also configured to generate a crosstalk correction matrix based on the blurred phase image, and provide the crosstalk correction matrix to the time-of-flight camera.
    Type: Application
    Filed: February 26, 2019
    Publication date: July 2, 2020
    Inventors: Venkata Subhash Chandra SADHU, Vamshi Krishna Reddy ANI REDDY
  • Patent number: 10663566
    Abstract: Systems and methods are provided for imaging a surface via time of flight measurement. An illumination system includes an illumination driver and an illumination source and is configured to project modulated electromagnetic radiation to a point on a surface of interest. A sensor system includes a sensor driver and is configured to receive and demodulate electromagnetic radiation reflected from the surface of interest. A temperature sensor is configured to provide a measured temperature representing a temperature at one of the illumination driver and the sensor driver and located at a position remote from the one of the illumination driver and the sensor driver. A compensation component is configured to calculate a phase offset between the illumination system and the sensor system from at least the measured temperature and a model representing transient heat flow within the system.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: May 26, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bharath Patil, Anjana Sharma, Subhash Chandra Venkata Sadhu, Ravishankar Ayyagari
  • Patent number: 10641869
    Abstract: An optical transmitting system for distance measuring includes a modulation signal generator, a light source, and an illumination driver coupled to the modulation signal generator and the light source. The modulation signal generator is configured to generate a modulation signal. The light source is configured to generate an optical waveform with amplitude modulation corresponding with the modulation signal. The illumination driver is configured to drive the light source. The illumination driver includes a switch and a switch driver. The switch is configured to switch between an on state and an off state to drive the light source. The switch driver is configured to drive the switch between the on and off states. The switch driver includes a first inductor and a capacitor in series with the first inductor and the switch.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: May 5, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Subhash Chandra Venkata Sadhu
  • Patent number: 10637958
    Abstract: Systems and methods are provided for an improved GUI workflow that supports complex bundle arrays for configuring devices. The method can also include displaying, on a GUI, a first top-level array of configuration fields described in a schema file having configuration options for a user device. A top-level array can include at least one group of nested (or “lower-level”) configuration options, where the grouping is represented by a graphical element in the top-level array. In response to a selection of a second-level array, the example method can include extracting lower-level configuration information from the schema file, generating a lower-level array based on the extracted information, and displaying, within the first top-level array, the first lower-level array of configuration fields. The method can also include various options for copying stored settings into a new array. The settings can be implemented on a device through a management server.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 28, 2020
    Assignee: VMware, Inc.
    Inventors: Sarmishta Akkala, Colleen Caporal, Bhavesh Krishna Kumar, Eric Matthew Stillman, Adarsh Subhash Chandra Jain
  • Patent number: 10637723
    Abstract: Various examples relate to the configuration of enterprise workspaces that can be provided in computing devices. In some examples, a computing device is enrolled with a management service that controls operating of at least a portion of the computing device. A management component creates a user account with a distributor of the operating system based on an email address and a password. The user account is associated with an enterprise workspace of the computing device.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: April 28, 2020
    Assignee: Airwatch LLC
    Inventors: Scott Harlow Kelley, Adarsh Subhash Chandra Jain, Stephen Turner
  • Patent number: 10600384
    Abstract: An electronic system having an assembly of a plurality of electronic devices each driven by a local power unit and a power sequencer control circuit for controlling the power on or off operation of the local power units. The electronic devices can be for example display units of a display wall. An advantage of such an assembly, e.g. a tiled display or display wall, is that a low level or as little energy as possible is dissipated by the local power units such as DC power supplies associated with the electronic devices, e.g. tiles of a display, and the associated “housekeeping” electronics. A further advantage is a limitation of the inrush current at start-up.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: March 24, 2020
    Assignees: BARCO NV, BARCO CONTROL ROOMS GMBH
    Inventors: Mahesh Chandra Joshi, Marcos Otero-Gensheimer, Subhash Chandra Dhyani
  • Publication number: 20200042719
    Abstract: Various examples relate to detecting vulnerabilities in managed client devices. In some examples, a system determines whether a vulnerability scan of a computing device is required to be performed. The system installs a vulnerability detection component in the computing device in response to determining that the vulnerability scan is required to be performed. The system requests the vulnerability detection component to perform the vulnerability scan of the computing device. The system transmits a result of the vulnerability scan to a remote management service for the computing device.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventors: Scott Harlow Kelley, Adarsh Subhash Chandra Jain, Stephen Turner