Amplifiers – Miscellaneous – Amplifier protection means
Reexamination Certificate
2011-02-08
2011-02-08
Nguyen, Patricia (Department: 2817)
Amplifiers
Miscellaneous
Amplifier protection means
C330S251000, C330S010000
Reexamination Certificate
active
07884670
ABSTRACT:
A Class D amplifier includes a ramp generator configured to generate a first signal and a second signal. Each of the first signal and the second signal oscillate between a minimum value and a maximum value. A signal generator is configured to receive an input signal, the first signal and the second signal. The input signal has a value that is between the minimum value and the maximum value. A signal generator is configured to generate a third signal and a fourth signal. The third signal is generated based on each of the first signal and the second signal transitioning from a value above the value of the input signal to a value below the value of the input signal. The fourth signal is generated based on each of the first signal and the second signal transitioning from a value below the value of the input signal to a value above the value of the input signal. An output stage is configured to drive a load based on the third signal and the fourth signal.
REFERENCES:
patent: 4404511 (1983-09-01), Nola
patent: 4415862 (1983-11-01), Kunugi
patent: 4584566 (1986-04-01), Arcara
patent: 4791341 (1988-12-01), Brown et al.
patent: 5077539 (1991-12-01), Howatt
patent: 5204809 (1993-04-01), Andresen
patent: 5479134 (1995-12-01), Nishioka et al.
patent: 5479337 (1995-12-01), Voigt
patent: 5504457 (1996-04-01), Jensen
patent: 5617058 (1997-04-01), Adrian et al.
patent: 5955910 (1999-09-01), Levin et al.
patent: 6049473 (2000-04-01), Jang et al.
patent: 6348781 (2002-02-01), Midya et al.
patent: 6362986 (2002-03-01), Schultz et al.
patent: 6430220 (2002-08-01), Determan
patent: 6552607 (2003-04-01), Danielson
patent: 6594309 (2003-07-01), Botti et al.
patent: 6847257 (2005-01-01), Edwards et al.
patent: 6897640 (2005-05-01), Nebon et al.
patent: 6922101 (2005-07-01), Bayko
patent: 6952131 (2005-10-01), Jeong et al.
patent: 7002406 (2006-02-01), Risbo et al.
patent: 7190224 (2007-03-01), Sutardja
patent: 7200187 (2007-04-01), O'Brien
patent: 7242248 (2007-07-01), Sutardja
patent: 7262658 (2007-08-01), Ramaswamy et al.
patent: 7298209 (2007-11-01), Sutardja
patent: 7378904 (2008-05-01), Risbo
patent: 7417412 (2008-08-01), Koh
patent: 7468631 (2008-12-01), Sutardja
patent: 0564490 (2001-04-01), None
patent: WO92/12572 (1992-07-01), None
patent: WO97/18626 (1997-05-01), None
patent: WO02/25817 (2002-03-01), None
patent: WO03/043184 (2003-05-01), None
Official Communication from the European Patent Office dated Dec. 15, 2005 for Application No. 04 011 557.8-2215; 4 pages.
Nielsen K., “Parallel Phase Shifted Carrier Pulse Width Modulation (PSCPWM)- A Novel Approach to Switching Power Amplifier Design.” Journal of the Audio Engineering Society, Audio Engineering Society, Mar. 22, 1997:1-26.
Marvell World Trade Ltd.
Nguyen Patricia
LandOfFree
Class D amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Class D amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Class D amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2646333