WO2007147033A3 - Code-based echo cancellation - Google Patents

Code-based echo cancellation Download PDF

Info

Publication number
WO2007147033A3
WO2007147033A3 PCT/US2007/071180 US2007071180W WO2007147033A3 WO 2007147033 A3 WO2007147033 A3 WO 2007147033A3 US 2007071180 W US2007071180 W US 2007071180W WO 2007147033 A3 WO2007147033 A3 WO 2007147033A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
code
convolved
echo cancellation
transformed
Prior art date
Application number
PCT/US2007/071180
Other languages
French (fr)
Other versions
WO2007147033A2 (en
Inventor
Derek Wang
Vikas Sharma
Original Assignee
Divitas Networks Inc
Derek Wang
Vikas Sharma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/538,042 external-priority patent/US20070094374A1/en
Priority claimed from US11/755,704 external-priority patent/US7480500B1/en
Priority claimed from US11/755,702 external-priority patent/US20080140767A1/en
Priority claimed from US11/755,727 external-priority patent/US20090016333A1/en
Priority claimed from US11/755,710 external-priority patent/US20080317241A1/en
Application filed by Divitas Networks Inc, Derek Wang, Vikas Sharma filed Critical Divitas Networks Inc
Priority to PCT/US2007/071180 priority Critical patent/WO2007147033A2/en
Priority to EP07798540A priority patent/EP2055018A4/en
Publication of WO2007147033A2 publication Critical patent/WO2007147033A2/en
Publication of WO2007147033A3 publication Critical patent/WO2007147033A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/029—Firewall traversal, e.g. tunnelling or, creating pinholes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H04W12/062—Pre-authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H04W12/069—Authentication using certificates or pre-shared keys

Abstract

An apparatus for canceling a signal is disclosed. The apparatus may include an identification code (ID code) generator configured to generate an ID code. The apparatus may also include an ID code injector configured to inject the ID code into at least one of the signal and a processed signal to produce a convolved signal. The processed signal is resulted from a processing of the signal. The apparatus may further include an ID code detector configured to detect at least one of the convolved signal, a transformed signal, and a transformation of the convolved signal. The transformed signal is resulted from the transformation of the convolved signal. The apparatus may further include an arithmetic function configured to remove at least one of the convolved signal and the transformed signal.
PCT/US2007/071180 2006-06-14 2007-06-14 Code-based echo cancellation WO2007147033A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2007/071180 WO2007147033A2 (en) 2006-06-14 2007-06-14 Code-based echo cancellation
EP07798540A EP2055018A4 (en) 2006-06-14 2007-06-14 Code-based echo cancellation

Applications Claiming Priority (25)

Application Number Priority Date Filing Date Title
US80480606P 2006-06-14 2006-06-14
US60/804,806 2006-06-14
US11/538,042 US20070094374A1 (en) 2005-10-03 2006-10-02 Enterprise-managed wireless communication
US11/538,042 2006-10-02
US11/538,034 US20070264989A1 (en) 2005-10-03 2006-10-02 Rendezvous calling systems and methods therefor
US11/537,994 US20070091907A1 (en) 2005-10-03 2006-10-02 Secured media communication across enterprise gateway
US11/537,985 US7546125B2 (en) 2005-10-03 2006-10-02 Enhancing user experience during handoffs in wireless communication
US11/537,980 US20070091848A1 (en) 2005-10-03 2006-10-02 Reducing data loss during handoffs in wireless communication
US11/537,985 2006-10-02
US11/537,994 2006-10-02
US11/538,034 2006-10-02
US11/538,037 2006-10-02
US11/537,990 US7688820B2 (en) 2005-10-03 2006-10-02 Classification for media stream packets in a media gateway
US11/537,990 2006-10-02
US11/537,980 2006-10-02
US11/538,037 US20080119165A1 (en) 2005-10-03 2006-10-02 Call routing via recipient authentication
US11/755,704 US7480500B1 (en) 2006-06-14 2007-05-30 Divitas protocol proxy and methods therefor
US11/755,704 2007-05-30
US11/755,702 US20080140767A1 (en) 2006-06-14 2007-05-30 Divitas description protocol and methods therefor
US11/755,702 2007-05-30
US11/755,727 US20090016333A1 (en) 2006-06-14 2007-05-30 Content-based adaptive jitter handling
US11/755,710 US20080317241A1 (en) 2006-06-14 2007-05-30 Code-based echo cancellation
US11/755,710 2007-05-30
US11/755,727 2007-05-30
PCT/US2007/071180 WO2007147033A2 (en) 2006-06-14 2007-06-14 Code-based echo cancellation

Publications (2)

Publication Number Publication Date
WO2007147033A2 WO2007147033A2 (en) 2007-12-21
WO2007147033A3 true WO2007147033A3 (en) 2008-07-03

Family

ID=42312710

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/071180 WO2007147033A2 (en) 2006-06-14 2007-06-14 Code-based echo cancellation

Country Status (2)

Country Link
EP (1) EP2055018A4 (en)
WO (1) WO2007147033A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8295475B2 (en) 2006-01-13 2012-10-23 Microsoft Corporation Selective glitch detection, clock drift compensation, and anti-clipping in audio echo cancellation
US7773743B2 (en) 2006-04-28 2010-08-10 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and residual echo suppression
US7831035B2 (en) 2006-04-28 2010-11-09 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and center clipping
US8380253B2 (en) 2008-02-15 2013-02-19 Microsoft Corporation Voice switching for voice communication on computers
US8369251B2 (en) 2008-06-20 2013-02-05 Microsoft Corporation Timestamp quality assessment for assuring acoustic echo canceller operability

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010456A (en) * 1998-12-30 2000-01-04 General Electric Company Method and apparatus for acoustic subtraction imaging using linear and nonlinear ultrasonic images
US20020131583A1 (en) * 2001-02-05 2002-09-19 Youhong Lu System and method for echo cancellation
US20030081741A1 (en) * 1999-07-22 2003-05-01 Compaq Information Technologies Group, L.P. Dual mode phone line networking modem utilizing conventional telephone wiring
US6597787B1 (en) * 1999-07-29 2003-07-22 Telefonaktiebolaget L M Ericsson (Publ) Echo cancellation device for cancelling echos in a transceiver unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010456A (en) * 1998-12-30 2000-01-04 General Electric Company Method and apparatus for acoustic subtraction imaging using linear and nonlinear ultrasonic images
US20030081741A1 (en) * 1999-07-22 2003-05-01 Compaq Information Technologies Group, L.P. Dual mode phone line networking modem utilizing conventional telephone wiring
US6597787B1 (en) * 1999-07-29 2003-07-22 Telefonaktiebolaget L M Ericsson (Publ) Echo cancellation device for cancelling echos in a transceiver unit
US20020131583A1 (en) * 2001-02-05 2002-09-19 Youhong Lu System and method for echo cancellation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2055018A4 *

Also Published As

Publication number Publication date
EP2055018A4 (en) 2009-09-16
EP2055018A2 (en) 2009-05-06
WO2007147033A2 (en) 2007-12-21

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