Patents by Inventor Ravi Satyanarayanan

Ravi Satyanarayanan 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).

  • Signaling microphone covering to the user
    Patent number: 8374362
    Abstract: A mechanism is provided that monitors secondary microphone signals, in a multi-microphone mobile device, to warn the user if one or more secondary microphones are covered while the mobile device is in use. In one example, smoothly averaged power estimates of the secondary microphones may be computed and compared against the noise floor estimate of a primary microphone. Microphone covering detection may be made by comparing the secondary microphone smooth power estimates to the noise floor estimate for the primary microphone. In another example, the noise floor estimates for the primary and secondary microphone signals may be compared to the difference in the sensitivity of the first and second microphones to determine if the secondary microphone is covered. Once detection is made, a warning signal may be generated and issued to the user.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: February 12, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Dinesh Ramakrishnan, Ravi Satyanarayanan, Song Wang, Eddie L. T. Choy
  • SIGNALING MICROPHONE COVERING TO THE USER
    Publication number: 20090196429
    Abstract: A mechanism is provided that monitors secondary microphone signals, in a multi-microphone mobile device, to warn the user if one or more secondary microphones are covered while the mobile device is in use. In one example, smoothly averaged power estimates of the secondary microphones may be computed and compared against the noise floor estimate of a primary microphone. Microphone covering detection may be made by comparing the secondary microphone smooth power estimates to the noise floor estimate for the primary microphone. In another example, the noise floor estimates for the primary and secondary microphone signals may be compared to the difference in the sensitivity of the first and second microphones to determine if the secondary microphone is covered. Once detection is made, a warning signal may be generated and issued to the user.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Dinesh Ramakrishnan, Ravi Satyanarayanan, Song Wang, Eddie L.T. Choy