Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate
2005-10-25
2010-06-15
Ni, Suhan (Department: 2614)
Electrical audio signal processing systems and devices
Having non-electrical feature
And loudspeaker
C381S111000, C455S564000
Reexamination Certificate
active
07738669
ABSTRACT:
A mobile communication terminal includes a receiver converting an audio signal outputted from the mobile communication terminal into an audible sound; a coupler dividing the audio signal outputted from the receiver into first and second audio signals which are different in phase from each other; an audio signal amplifier amplifying the second audio signal outputted from the coupler according to a predetermined amplification gain; a receiver port to which the receiver is detachably connected and which includes a first output port transmitting the first audio signal outputted from the coupler to the receiver and a second output port transmitting the second audio signal amplified by the audio signal amplifier to the receiver; and a controller controlling the mobile communication terminal and the amplification gain of the audio signal amplifier.
REFERENCES:
patent: 5794163 (1998-08-01), Paterson et al.
patent: 6865403 (2005-03-01), Averkamp
patent: 7106878 (2006-09-01), Saiki et al.
patent: 2005/0271226 (2005-12-01), Tanabu et al.
patent: 1535034 (2004-10-01), None
patent: 0543224 (1992-04-01), None
Chinese Office Action dated Mar. 13, 2009.
H.C. Park & Associates PLC
Ni Suhan
Pantech&Curitel Communications, Inc.
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