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:
May. 15, 2012
Filed:
Feb. 21, 2008
Applicants:
Mark Fallat, Vancouver, CA;
Derek Sahota, Hamilton, CA;
Inventors:
Mark Fallat, Vancouver, CA;
Derek Sahota, Hamilton, CA;
Assignee:
QNX Software Systems, Limited, Kanata, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system improves speech detection or processing by identifying registration signals. The system encodes a limited frequency band by varying the amplitude of a pulse width modulated signal between predefined values. The signal is separated into frequency bins that identify amplitude and phase. The registration signal is measured by comparing a difference in average acoustic power in a plurality of adjacent bins over time.