Patents by Inventor Harshvardhan Vathsangam

Harshvardhan Vathsangam 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).

  • Determining pulse transit time non-invasively using handheld devices
    Patent number: 9504391
    Abstract: A system and method to determine pulse transit time using a handheld device. The method includes generating an electrocardiogram (EKG) for a user of the handheld device. Two portions of the user's body are in contact with two contact points of the handheld device. The method also includes de-noising the EKG to identify a start time when a blood pulse leaves a heart of the user. The method further includes de-noising a plurality of video images of the user to identify a pressure wave indicating an arterial site and a time when the pressure wave appears. Additionally, the method includes determining the PTT based on the de-noised EKG and the de-noised video images.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: November 29, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Daniel Morris, T. Scott Saponas, Desney S. Tan, Morgan Dixon, Siddharth Khullar, Harshvardhan Vathsangam
  • Physical activity monitoring and intervention using smartphone and mobile app
    Patent number: 8965402
    Abstract: A mobile software application may issue an alert when a user is not achieving a heath objective based on track movement of a mobile computer system that is running the application and being carried by the user and physical characteristics of the user. The software application may map information about the physical characteristics of the user to a user model and determine the energy being expended by the user based on the user model and movement information provided by the mobile computer system. The software application may determine the frequency of steps taken by the user by: bandpass filtering a time domain signal that is representative of the movement, transforming the filtered time domain signal into a frequency domain signal, and equating the step frequency with the frequency of the highest peak in the frequency domain signal.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 24, 2015
    Inventors: Harshvardhan Vathsangam, Gaurav S. Sukhatme
  • DETERMINING PULSE TRANSIT TIME NON-INVASIVELY USING HANDHELD DEVICES
    Publication number: 20140249398
    Abstract: A system and method to determine pulse transit time using a handheld device. The method includes generating an electrocardiogram (EKG) for a user of the handheld device. Two portions of the user's body are in contact with two contact points of the handheld device. The method also includes de-noising the EKG to identify a start time when a blood pulse leaves a heart of the user. The method further includes de-noising a plurality of video images of the user to identify a pressure wave indicating an arterial site and a time when the pressure wave appears. Additionally, the method includes determining the PTT based on the de-noised EKG and the de-noised video images.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 4, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Daniel Morris, T. Scott Saponas, Desney S. Tan, Morgan Dixon, Siddharth Khullar, Harshvardhan Vathsangam