Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation
Reexamination Certificate
2008-12-31
2011-10-18
Nguyen, Patricia (Department: 2817)
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
C381S394000, C381S396000
Reexamination Certificate
active
08041048
ABSTRACT:
The present invention relates to electromagnetically-countered speaker systems for generating acoustic sounds according to dynamic signals supplied thereto while minimizing irradiation of harmful electromagnetic waves therefrom. More particularly, the present invention relates to various speaker systems which do not include speaker magnets but include driver members for generating the sounds while emitting such harmful waves and counter members for generating magnetic forces for providing such sound while emitting counter electromagnetic waves capable of canceling at least a substantial portion of the harmful waves based on their configurational and phase characteristics. The present invention also relates to various speaker systems which do not include speaker magnets but include various electric and/or magnetic shields in addition to such drive and counter members. The present invention also relates to various methods of minimizing irradiation of the harmful waves of the speaker systems by the counter members, various methods of shielding such harmful waves by the electric and/or magnetic shields, and the like. The present invention further relates to various processes for providing such systems, counter members thereof, and electric and/or magnetic shields therefor.
REFERENCES:
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patent: 7058195 (2006-06-01), Trandafir
patent: 7162048 (2007-01-01), Shima
patent: 7225895 (2007-06-01), Sahyoun
patent: 7231057 (2007-06-01), Kim et al.
patent: 7330705 (2008-02-01), Lee
Nguyen Patricia
Stein McEwen, LLP
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