Patents by Inventor Madhu Shrivastav

Madhu Shrivastav 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).

  • Dynamic compass calibration in a portable device
    Patent number: 8494799
    Abstract: The magnitude of a sensed, raw magnetic field in a portable device is monitored over a given time interval. The monitored magnitude is compared with predetermined criteria. Based on the comparison, recalibration of a compass function is signed. Other embodiments are also described and claimed.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: July 23, 2013
    Assignee: Apple Inc.
    Inventors: Patrick S. Piemonte, Madhu Shrivastav, Puneet Mishra, Robert Mayor, Ronald K. Huang, Parin Patel
  • DYNAMIC COMPASS CALIBRATION IN A PORTABLE DEVICE
    Publication number: 20120283977
    Abstract: The magnitude of a sensed, raw magnetic field in a portable device is monitored over a given time interval. The monitored magnitude is compared with predetermined criteria. Based on the comparison, recalibration of a compass function is signed. Other embodiments are also described and claimed.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Applicant: Apple Inc.
    Inventors: Patrick S. Piemonte, Madhu Shrivastav, Puneet Mishra, Robert Mayor, Ronald K. Huang, Parin Patel
  • Dynamic compass calibration in a portable device
    Patent number: 8239153
    Abstract: The magnitude of a sensed, raw magnetic field in a portable device is monitored over a given time interval. The monitored magnitude is compared with predetermined criteria. Based on the comparison, recalibration of a compass function is signed. Other embodiments are also described and claimed.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: August 7, 2012
    Assignee: Apple Inc.
    Inventors: Patrick S. Piemonte, Madhu Shrivastav, Puneet Mishra, Robert Mayor, Ronald K. Huang, Parin Patel
  • DYNAMIC COMPASS CALIBRATION IN A PORTABLE DEVICE
    Publication number: 20100312510
    Abstract: The magnitude of a sensed, raw magnetic field in a portable device is monitored over a given time interval. The monitored magnitude is compared with predetermined criteria. Based on the comparison, recalibration of a compass function is signed. Other embodiments are also described and claimed.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 9, 2010
    Applicant: Apple Inc.
    Inventors: Patrick S. Piemonte, Madhu Shrivastav, Puntee Mishra, Robert Mayor, Ronald K. Huang