Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2003-12-08
2009-10-06
Tran, Khanh C (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C370S290000, C379S406080
Reexamination Certificate
active
07599432
ABSTRACT:
A method and apparatus for dynamically inserting gain in an adaptive filter is taught. This selective insertion of gain may be used to allow an adaptive filter to converge more quickly and/or to overcome inherent limitations of the adaptive filter. An echo canceller (e.g.20and22in FIG.1) is just one possible use for an adaptive filter having a shorter convergence time. However, virtually all uses of an adaptive filter can benefit from a shorter convergence time and/or improved filtering performance.
REFERENCES:
patent: 4546216 (1985-10-01), Tegethoff
patent: 5327495 (1994-07-01), Shenoi et al.
patent: 5463618 (1995-10-01), Furukawa et al.
patent: 5563944 (1996-10-01), Hasegawa
patent: 5668794 (1997-09-01), McCaslin
patent: 5687229 (1997-11-01), Sih
patent: 5737408 (1998-04-01), Hasegawa
patent: 5937060 (1999-08-01), Oh
patent: 6108412 (2000-08-01), Liu et al.
patent: 6282286 (2001-08-01), Reesor
patent: 6532289 (2003-03-01), Magid
patent: 6594359 (2003-07-01), Park
patent: 6622030 (2003-09-01), Romesburg
patent: 6925177 (2005-08-01), Nishimura
patent: 6959167 (2005-10-01), Dehandschutter
patent: 2003/0123674 (2003-07-01), Boland
patent: 2003/0206624 (2003-11-01), Domer
patent: 2003/0235244 (2003-12-01), Pessoa et al.
patent: WO 01/10102 (2001-02-01), None
patent: WO 01/10102 (2001-02-01), None
patent: WO 02/03563 (2002-01-01), None
Heitkamper et al., “Adaptive Gain Control for Speech Quality Improvement and Echo Suppression,” IEEE 1993, pp. 455-458.
Aziz Ahsan Ul
Dyba Roman A.
He Perry P.
Pessoa Lucio F. C.
Chiu Joanna G.
Freescale Semiconductor Inc.
Hill Susan C.
Tran Khanh C
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