Electrical audio signal processing systems and devices – With amplifier
Reexamination Certificate
2006-10-17
2006-10-17
Pendleton, Brian T. (Department: 2615)
Electrical audio signal processing systems and devices
With amplifier
C330S255000
Reexamination Certificate
active
07123730
ABSTRACT:
An audio power amplifying apparatus includes first through B-th power amplifying terminals, each of which power-amplifies an input alternating current (AC) audio input signal input and outputs the power amplified result as an audio output signal. A preamplifier of a b-th amplifying terminal divides the audio input signal into positive and negative portions to preamplify the positive and negative portions. A power supply supplies first through M-th positive and negative voltages having different levels. A power amplifier selects a positive supply voltage having a level proportional to a level of the preamplified positive portion and a negative supply voltage having a level proportional to a level of the preamplified negative portion and again amplifies the preamplified positive and negative portions using the selected positive and negative supply voltages to be combined by a signal synthesizer as the audio output signal.
REFERENCES:
patent: 5726602 (1998-03-01), Brown
patent: 54-157459 (1979-12-01), None
patent: 57-037908 (1982-03-01), None
patent: 61-52815 (1986-04-01), None
patent: 61-19532 (1986-06-01), None
patent: 5-259749 (1993-10-01), None
patent: 10-313223 (1998-11-01), None
patent: 2001-44769 (2001-02-01), None
patent: 1993-7291 (1993-08-01), None
patent: 2001-22733 (2001-03-01), None
Sanyo Electric Co, “STK4112II: AF Power Amplifier (Split Power Supply) (10W + 10W min, THD=0.4%)”, Thick Film Hybrid IC, No. 2322, pp. 1-8 (Jul. 1997).
Gibo Masao
Son Won-suk
Bluetek Co., Ltd.
Pendleton Brian T.
Staas & Halsey , LLP
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