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:
Apr. 22, 2014
Filed:
Mar. 30, 2011
Paul G. Yamkovoy, Acton, MA (US);
Pericles Nicholas Bakalos, Maynard, MA (US);
Ricardo F. Carreras, Southborough, MA (US);
Daniel M. Gauger, Jr., Cambridge, MA (US);
Paul G. Yamkovoy, Acton, MA (US);
Pericles Nicholas Bakalos, Maynard, MA (US);
Ricardo F. Carreras, Southborough, MA (US);
Daniel M. Gauger, Jr., Cambridge, MA (US);
Bose Corporation, Framingham, MA (US);
Abstract
Displacement of a moving diaphragm in an electroacoustic transducer is measured by modulating an electrical signal based on changes in capacitance between the voice coil assembly and the magnetic structure resulting from relative motion between the voice coil and the magnetic structure. The modulated electrical signal is demodulated to produce an output signal having a value proportional to the displacement.