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1. (WO2010032119) A HIERARCHICAL QUADRATURE (QAM) TRANSMISSION SCHEME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/032119    International Application No.:    PCT/IB2009/006878
Publication Date: 25.03.2010 International Filing Date: 17.09.2009
IPC:
H04L 27/34 (2006.01)
Applicants: THOMSON LICENSING [FR/FR]; 46, Quai A. Le Gallo F-92100 Boulogne-Billancourt (FR) (For All Designated States Except US).
ZHOU, Wei [CN/CN]; (CN) (For US Only).
ZOU, Li [CN/CN]; (CN) (For US Only)
Inventors: ZHOU, Wei; (CN).
ZOU, Li; (CN)
Agent: THOMSON LICENSING; c/o Thomson Licensing LLC Attn: SHEDD, Robert, D. Two Independence Way, Suite No. 200 Princeton, NJ 08540 (US)
Priority Data:
08305564.0 18.09.2008 EP
Title (EN) A HIERARCHICAL QUADRATURE (QAM) TRANSMISSION SCHEME
(FR) SCHÉMA DE TRANSMISSION EN QUADRATURE HIÉRARCHIQUE (QAM)
Abstract: front page image
(EN)A cable transmitter transmits a hierarchically modulated signal having at least two layers and wherein one layer is associated with a non-uniform QAM (quadrature amplitude modulation) scheme for high priority streams; and the other layer is associated with a uniform QAM scheme for low priority streams.
(FR)Selon l’invention, un émetteur par câble transmet un signal modulé hiérarchiquement comportant au moins deux couches, une couche étant associée à un schéma de modulation d’amplitude en quadrature (QAM) non uniforme pour des flux à haute priorité et l’autre couche étant associée à un schéma de modulation d’amplitude en quadrature uniforme pour des flux à basse priorité.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, 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, PE, 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, SM, 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)