Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2007-08-24
2009-12-15
Nguyen, Khanh V (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
Reexamination Certificate
active
07633336
ABSTRACT:
Audio amplifiers and methods of generating audio signals are disclosed. A disclosed example amplifier comprises a first driver to receive a first signal; a second driver to receive a second signal; a configurable signal delivery circuit; and a mode selector in communication with the first and second drivers to selectively configure the signal delivery circuit in a voltage boost mode or a voltage buck-boost mode based on a characteristic of the input signal.
REFERENCES:
patent: 6320460 (2001-11-01), Meszlenyi
patent: 7078964 (2006-07-01), Risbo et al.
patent: 7319763 (2008-01-01), Bank et al.
patent: 2004/0027196 (2004-02-01), Lambruschi et al.
patent: 2004/0164792 (2004-08-01), Yokoyama
patent: 2006/0250183 (2006-11-01), Zhao et al.
Wikipedia: The Free Encyclopedia, “Pulse-Width Modulation,” Wikimedia Foundation, Inc. retrieved on Jun. 22, 2007, <http://en.wikipedia.org/wiki/Pulse-width—modulation> (7 pages).
Wikipedia: The Free Encyclopedia, “Buck-Boost Converter,” Wikimedia Foundation, Inc. retrieved on Feb. 25, 2007, <http://en.wikipedia.org/wiki/Buck-boost—converter> (8 pages).
Wikipedia: The Free Encyclopedia, “Boost Converter,” Wikimedia Foundation, Inc. retrieved on Feb. 25, 2007, <http://en.wikipedia.org/wiki/Boost—converter> (10 pages).
Wikipedia: The Free Encyclopedia, “Switching Amplifier,” Wikimedia Foundation, Inc. retrieved on Feb. 25, 2007, <http://en.wikipedia.org/wiki/PWM—amplifier> (2 pages).
Dolland, Carlisle, “High-Side Driver Feeds IGBTs and MOSFETs,” Electronics Design Strategy, News, dated Nov. 23, 2000, retrieved from <http://www.edn.com/article/CA54572.html?ref=nbsa&q=high%2Dside+driver+feeds+igbts+and+mosfets> on Feb. 24, 2007, (3 pages).
Dallas Semiconductor Maxim, “Class D Amplifiers: Fundamentals of Operation and Recent Developments,” Maxim Integrated Products, dated Dec. 15, 2006, (13 pages).
Williams, Travis, “Use Negative-Swing Analog Switches for Portable Audio,” Automotive Design Line, dated Feb. 6, 2007, retrieved from <http://www.automotivedesignline.com/howto/197005066; jsessionid=SFDXYEAZLBCRYQSNDLQCKICCJUNN2JVN> on Feb. 25, 2007, (3 pages).
U.S. Appl. No. 11/728,883, filed on Mar. 27, 2007, Inventors: Jagadeesh Krishnan & Paul H. Fontaine, titled: Multi-Mode Class-D Amplifiers, not yet published, (51 pages).
Baldwin David J.
Bean Ronnie A.
Jones, III Roy Clifton
Brady III Wade J.
Nguyen Khanh V
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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