Class D amplifier circuit

Details Class D amplifier circuit Class D amplifier circuit

2011-08-02

2011-08-02

Pascal, Robert (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

Reexamination Certificate

active

07990211

ABSTRACT:
A pulse monitor circuit detects the presence or non-presence of the output pulses output from an output stage circuit. The pulse monitor circuit outputs an up signal to the up/down counter when the output pulses do not exist at all and outputs a down signal to the up/down counter when the output pulses exist. The up/down counter outputs a signal for increasing the delay amount of a delay amount variable circuit when a count value is large, that is, when the output pulses disappear. In contrast, when the count value is small, that is, when the output pulses exist, the counter outputs the signal for reducing the delay amount of the delay amount variable circuit.

REFERENCES:
patent: 6294954 (2001-09-01), Melanson
patent: 6518838 (2003-02-01), Risbo
patent: 7167046 (2007-01-01), Maejima
patent: 7265617 (2007-09-01), Ohkuri
patent: 7295063 (2007-11-01), Kurokawa
patent: 2006/0012428 (2006-01-01), Ohkuri
patent: 2007/0116109 (2007-05-01), Stanley
patent: 2003-510878 (A) (2003-03-01), None
patent: 2005210280 (A) (2005-08-01), None
patent: 2006-033499 (A) (2006-02-01), None
patent: 2006-042296 (2006-02-01), None
patent: 2006-042296 (A) (2006-02-01), None
patent: WO 01/22585 (2001-03-01), None
Extended European Search Report for Application No. 08012497.7, issued Nov. 20, 2008 (6 pgs.).
Japanese Patent Office: “Notification of Reasons for Refusal” for Patent Application No. 2007-184006, (Drafting Date: Jan. 5, 2010; 7 pgs.)
Korean Intellectual Property Office, “Notice of Preliminary Rejection,” Korean Patent Application No. 10-2008-0067797; dated Feb. 22, 2010, 4 pages.
Korean Intellectual Property Office “Notice of Preliminary Rejection” dated Sep. 14, 2010 Application No. 10-2008-0067797 of Yamaha Corporation, 3 pages.
The State Intellectual Property Office of the People'S Republic of China, “Notification of First Office Action” Chinese Patent Application No. 200810135805.1 dated Dec. 23, 2010, 4 pages.
European Patent Office “Communication Pursuant to Article 94(3) EPC” dated Jul. 19, 2010 for Application.No. 08012497.7-1233, 5 pages.

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