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1. (WO2009134882) METHOD AND APPARATUS TO REDUCE NON-LINEAR DISTORTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/134882    International Application No.:    PCT/US2009/042107
Publication Date: 05.11.2009 International Filing Date: 29.04.2009
IPC:
H04B 1/12 (2006.01), H04B 1/62 (2006.01)
Applicants: PALM, INC. [US/US]; 950 W. Maude Avenue Sunnyvale, CA 94085 (US) (For All Designated States Except US).
CARNES, Michael [US/US]; (US) (For US Only).
TU, Jerome [US/US]; (US) (For US Only)
Inventors: CARNES, Michael; (US).
TU, Jerome; (US)
Agent: KACVINSKY, John, F.; (US)
Priority Data:
12/112,792 30.04.2008 US
Title (EN) METHOD AND APPARATUS TO REDUCE NON-LINEAR DISTORTION
(FR) PROCÉDÉ ET APPAREIL DE RÉDUCTION DE DISTORSION NON LINÉAIRE
Abstract: front page image
(EN)Techniques to reduce distortion in acoustic signals in mobile computing devices are described. For example, a mobile computing device may comprise a speaker operative to receive a first signal and output a second signal. The mobile computing device may further comprise a first microphone operative to receive the second signal and a second microphone operative to receive a third signal. An echo canceller may be coupled to the first microphone and the second microphone and may be operative to compare the second signal and the third signal and reduce distortion in the third signal based on the comparison. Other embodiments are described and claimed.
(FR)L’invention concerne des techniques permettant de réduire les distorsions de signaux acoustiques dans des dispositifs de calcul mobiles. Par exemple, un dispositif de calcul mobile peut comprendre un haut-parleur permettant de recevoir un premier signal et d’émettre un second signal. Le dispositif de calcul mobile peut en outre comprendre un premier microphone permettant de recevoir un second signal et un second microphone permettant de recevoir un troisième signal. Un annulateur d’écho peut être couplé au premier microphone et au second microphone, et permet de comparer le second signal et le troisième signal, et de réduire la distorsion du troisième signal en fonction de la comparaison. D’autres modes de réalisation sont également décrits et revendiqués.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)