Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate
2007-07-03
2007-07-03
Tran, Sinh (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Microphone capsule only
C381S174000
Reexamination Certificate
active
10265979
ABSTRACT:
In a microphone cartridge, a flexible printed circuit board serves two functions, separating the diaphragm and backplate, and electrically connecting the cartridge and the buffer amplifier. The flex-print includes a spacer portion that maintains the appropriate distance between the diaphragm and backplate, and an integral lead portion having a conductor serving as the signal path for transmitting the signal from the cartridge to the amplifier. The spacer portion has a conductor that electrically contacts the diaphragm or backplate and is connected to the conductor of the integral lead portion. The integral lead portion may optionally include a second electrical conductor providing a reference path from the cartridge to the amplifier. Further, the flex-print may be used as the carrier for the amplifier, its associated circuitry, and for other circuitry within the listening device. And, the flex-print may be used as a portion of the diaphragm subassembly and/or the backplate subassembly
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de Blok Marcel
de Roo Dion I.
Lafort Adrianus M.
Ensey Brian
Sonion Nederland B.V.
Tran Sinh
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