Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2005-01-18
2009-08-04
Torres, Juan A (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
Reexamination Certificate
active
07570717
ABSTRACT:
A method for demodulating a carrier wave in a channel environment in which a pilot signal may be distorted, in a digital TV receiver, which may receive a vestigial sideband (VSB) modulated and transmitted signal, and a demodulation apparatus therefor are provided. A field synchronization part of a VSB signal, in which a pilot signal may be removed, may be used as a reference signal for synchronization. The frequency offset of a carrier wave may be estimated through self-correlation of a signal, and the phase offset of the carrier wave may be estimated through a pilot-less frequency and phase locked loop (FPLL).
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Han Dong-seog
Kang Ki-Dong
Kim Beom-kon
Kim Min-ho
Oh Hae-Sock
Harness & Dickey & Pierce P.L.C.
Samsung Electronics Co,. Ltd.
Torres Juan A
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