Title:
後方互換的DVB-S規格送信システム
Document Type and Number:
Japanese Patent JP4194999
Kind Code:
B2
Abstract:
The invention relates to digital transmissions. It particularly relates to a new transmission system (DVB-S2), which is backward compatible with a primary transmission system (DVB-S), enabling a receiver of the primary system to receive signals transmitted by a transmitter of the new transmission system. The principle of the invention is based on using a hybrid QPSK/Non-Uniform 8-PSK modulation. The hybrid modulation is specified by a periodic binary pattern indicating, for each symbol, which modulation is used.
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Inventors:
Shree, Antoine
Potier, Olivier
Potier, Olivier
Application Number:
JP2004502625A
Publication Date:
December 10, 2008
Filing Date:
April 11, 2003
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04L27/20; H04L27/18; H04N5/00
Domestic Patent References:
| JP9307517A |
Foreign References:
| US5398237 | ||||
| EP1065854A1 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito