The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2013
Filed:
Jan. 31, 2008
Dinesh Ramakrishnan, San Diego, CA (US);
Ravi Satyanarayanan, San Diego, CA (US);
Song Wang, San Diego, CA (US);
Eddie L. T. Choy, Carlsbad, CA (US);
Dinesh Ramakrishnan, San Diego, CA (US);
Ravi Satyanarayanan, San Diego, CA (US);
Song Wang, San Diego, CA (US);
Eddie L. T. Choy, Carlsbad, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
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.