Telephonic communications – Echo cancellation or suppression – Disable or inhibit function
Reexamination Certificate
2007-11-20
2007-11-20
Harold, Jefferey F (Department: 2614)
Telephonic communications
Echo cancellation or suppression
Disable or inhibit function
C379S406010, C379S406060, C379S406080
Reexamination Certificate
active
10234510
ABSTRACT:
A method for reducing transmit echo in a DSL modem comprises selecting at least one cancellation device of a plurality of cancellation devices. An attenuation signal is generated using the selected cancellation device. At least a portion of transmit echo is removed from a receive signal using the attenuation signal.
REFERENCES:
patent: 4246582 (1981-01-01), Kondo et al.
patent: 4785465 (1988-11-01), Lang et al.
patent: 5416776 (1995-05-01), Panzarella et al.
patent: 5506868 (1996-04-01), Cox et al.
patent: 5572517 (1996-11-01), Safadi
patent: 5623514 (1997-04-01), Arai
patent: 5696765 (1997-12-01), Safadi
patent: 5802169 (1998-09-01), Frantz et al.
patent: 5999540 (1999-12-01), McGhee
patent: 5999565 (1999-12-01), Locklear, Jr. et al.
patent: 6021158 (2000-02-01), Schurr et al.
patent: 6101216 (2000-08-01), Henderson et al.
patent: 6160843 (2000-12-01), McHale et al.
patent: 6163579 (2000-12-01), Harrington et al.
patent: 6192109 (2001-02-01), Amrany et al.
patent: 6208732 (2001-03-01), Moschytz et al.
patent: 6295343 (2001-09-01), Hjartarson et al.
patent: 6385203 (2002-05-01), McHale et al.
patent: 6385252 (2002-05-01), Gradl et al.
patent: 6400772 (2002-06-01), Chaplik
patent: 6477250 (2002-11-01), Sheets
patent: 6483870 (2002-11-01), Locklear, Jr. et al.
patent: 6724890 (2004-04-01), Bareis
patent: 2001/0048716 (2001-12-01), Gough et al.
patent: 56 051135 (1981-05-01), None
patent: 02 283131 (1990-11-01), None
patent: 05 063606 (1993-03-01), None
Easwaran Prakash
Mujica Fernando A.
Oswal Sandeep K.
Raychowdhury Arijit
Brady W. James
Harold Jefferey F
Shaw Steve A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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