Telecommunications – Wireless distribution system – Receiver for satellite broadcast
Reexamination Certificate
2007-07-31
2010-11-30
Trinh, Tan (Department: 2618)
Telecommunications
Wireless distribution system
Receiver for satellite broadcast
C455S307000, C455S306000, C455S339000, C455S340000
Reexamination Certificate
active
07844213
ABSTRACT:
Systems for delivering a plurality of broadcast programs where the transmitter and receiver roll-off factors are mismatched. A system in accordance with the present invention comprises a transmitter comprising a modulator, and a plurality of receivers, each receiver in the plurality of receivers receiving the plurality of broadcast programs, each receiver in the plurality of receivers further comprising a demodulator; wherein the modulator has a first root-raised cosine filter having a first roll-off factor and each receiver has a second root-raised cosine filter having a second roll-off factor, the first roll-off factor being smaller than the second roll-off factor.
REFERENCES:
patent: 4583235 (1986-04-01), Domer et al.
patent: 4594607 (1986-06-01), Lewis et al.
patent: 4667240 (1987-05-01), Willis et al.
patent: 5151926 (1992-09-01), Chennakeshu et al.
patent: 5202901 (1993-04-01), Chennakeshu et al.
patent: 5283815 (1994-02-01), Chennakeshu et al.
patent: 5309235 (1994-05-01), Naimpally
patent: 5648988 (1997-07-01), Iwamatsu et al.
patent: 5703910 (1997-12-01), Durvaux et al.
patent: RE37326 (2001-08-01), Kim
patent: 6396885 (2002-05-01), Ding et al.
patent: 6667760 (2003-12-01), Limberg
patent: 6771699 (2004-08-01), Karaoquz et al.
patent: 7729410 (2010-06-01), Eidson
patent: 2002/0106018 (2002-08-01), D'Luna et al.
patent: 2003/0016761 (2003-01-01), Min
patent: 2004/0047430 (2004-03-01), McCarty, Jr.
patent: 2005/0047497 (2005-03-01), Rubinstain et al.
patent: 2005/0060749 (2005-03-01), Hong et al.
patent: 2005/0186933 (2005-08-01), Trans
patent: 2006/0209982 (2006-09-01), De Gaudenzi et al.
patent: 2007/0165578 (2007-07-01), Yee et al.
patent: 2007/0189366 (2007-08-01), Ryu et al.
patent: 2008/0060021 (2008-03-01), Basse et al.
patent: 2008/0186088 (2008-08-01), Eidson
patent: 07193605 (1995-07-01), None
patent: 2004201267 (2004-07-01), None
Chen Ernest C.
Lai Dennis
Lin Tung-Sheng
Maitra Shamik
Santoru Joseph
The DIRECTV Group Inc.
Trinh Tan
LandOfFree
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