Circuit and apparatus having a delay unit for reducing...

Details Circuit and apparatus having a delay unit for reducing... Circuit and apparatus having a delay unit for reducing...

2006-05-23

2011-10-11

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Noise or distortion suppression

C381S083000, C381S093000, C381S071110, C381S071120

Reexamination Certificate

active

08036398

ABSTRACT:
A signal processing circuit includes a delaying unit that is configured to carry out delay processing on the basis of periodicity information synchronized with the periodicity of a periodic noise included in an input signal and a filter unit that is configured to receive the input signal and has a notch characteristic at a frequency f. The frequency f satisfies f=N/T, where N represents an integer equal to or greater than one and T represents a delaying time applied by the delaying unit.

REFERENCES:
patent: 5426433 (1995-06-01), Gertel
patent: 5586064 (1996-12-01), Grupp
patent: 5768166 (1998-06-01), Palatnik
patent: 5894459 (1999-04-01), Kurita et al.
patent: 6611602 (2003-08-01), White et al.
patent: 2004/0032509 (2004-02-01), Owens et al.
patent: 2005/0063553 (2005-03-01), Ozawa
patent: 1124218 (2001-08-01), None
patent: 62-271203 (1987-11-01), None
patent: 64-081518 (1989-03-01), None
patent: 02-223062 (1990-09-01), None
patent: 04-249913 (1992-09-01), None
patent: 06-349208 (1994-12-01), None
patent: 3277435 (1996-03-01), None
patent: 11-176113 (1999-07-01), None
patent: 11-205891 (1999-07-01), None
patent: 11-306699 (1999-11-01), None
patent: 11-328884 (1999-11-01), None
patent: 11325168 (1999-11-01), None
patent: 2000-293806 (2000-10-01), None
patent: 2001-250202 (2001-09-01), None
patent: 2001-319420 (2001-11-01), None
patent: 2003-338122 (2003-11-01), None
patent: 2003338122 (2003-11-01), None
patent: 2004-71076 (2004-03-01), None
patent: 2004-095130 (2004-03-01), None
patent: 2004-192666 (2004-07-01), None
patent: WO 2004015709 (2004-02-01), None
Office Action from Taiwan Application No. 95116422, dated May 7, 2009.

Affiliated with

Also associated with

Rating

Circuit and apparatus having a delay unit for reducing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and apparatus having a delay unit for reducing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and apparatus having a delay unit for reducing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4272209