Electrical audio signal processing systems and devices – Headphone circuits
Reexamination Certificate
2006-04-18
2006-04-18
Le, Huyen (Department: 2644)
Electrical audio signal processing systems and devices
Headphone circuits
C381S367000, C381S376000, C379S428020, C379S430000
Reexamination Certificate
active
07031475
ABSTRACT:
An all-in-one headset worn on the user's head, comprises a head band, a first housing arranged at the head band, a communication unit having selectable at least two communication channels and selectable at least two communication modes, an operating panel mounted on the outside wall of the first housing for selecting one communication channel and one communication mode, an ear-speaker mounted on the inside wall of the first housing, a microphone, a second housing for housing the microphone, a boom member for supporting the second housing to the first housing, an indicating unit for indicating the indication indicative of the selected communication channel and the selected communication mode.
REFERENCES:
patent: 5210791 (1993-05-01), Krasik
patent: 5359647 (1994-10-01), Regen et al.
patent: 5608794 (1997-03-01), Larson
patent: 5793865 (1998-08-01), Leifer
patent: 2002/0076060 (2002-06-01), Hall et al.
Kuraoka Shinji
Ohgo Shinichi
Yokoyama Takuya
Chau Corey
Le Huyen
Pearne & Gordon LLP
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