USB power amplified trumpet connecting device

Details USB power amplified trumpet connecting device USB power amplified trumpet connecting device

2006-06-20

2006-06-20

Cuneo, Kamand (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S732000, C361S784000, C361S803000, C174S255000

Reexamination Certificate

active

07064964

ABSTRACT:
A USB power amplified trumpet connecting device comprises a digital conversion chip and a power amplifier chip on a circuit board; an input connected to a USB port as an input; and an output. The output is connected to one of an earphone, a trumpet, or an optical fiber terminal. The output seat is an optical output seat which is connected to an optical fiber terminal for further connecting to a decoding amplifier and then to a trumpet. Another the output can be an output wire; and the output wire is connected to a trumpet. The output is an output seat; and the output seat is able to output cable signals and optical fiber signals for being connected to one of an earphone, a trumpet and an optical fiber terminal.

REFERENCES:
patent: 4023887 (1977-05-01), Speers
patent: 5661583 (1997-08-01), Nhu
patent: 6490163 (2002-12-01), Pua et al.
patent: 6823141 (2004-11-01), Miyauchi et al.
patent: 6921284 (2005-07-01), Sirichai et al.

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