Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2003-09-30
2008-09-09
Ahn, Sam K (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
Reexamination Certificate
active
07424054
ABSTRACT:
A carrier recovery apparatus, which may used in a high-definition TV receiver, includes an error compensating unit, an error detecting unit, and an oscillator. The error compensating unit combines a complex input signal with a frequency signal to generate a complex output signal. The complex output signal includes an error reference signal. The error detecting unit determines a location of the error reference signal in the complex output signal based on a real part of the complex output signal, and generates an error signal based on the location of the error reference signal. The oscillator generates the frequency signal with a frequency that varies based on the error signal. The complex input signal may be a VSB signal that is represented as a complex number, and the error reference signal may be a PN63 signal in a field synchronization signal of the complex input signal.
REFERENCES:
patent: 6967694 (2005-11-01), Ninomiya et al.
patent: 2001/0033625 (2001-10-01), Ninomiya et al.
patent: 1019940007633 (1994-04-01), None
patent: 1019950043526 (1995-11-01), None
patent: 1019990022567 (1999-06-01), None
Han Dong-seog
Kim Jung-jin
Kim Min-ho
Rhee Do-jun
Ahn Sam K
Myers Bigel Sibley & Sajovec P.A.
LandOfFree
Carrier recovery apparatus and methods for high-definition... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carrier recovery apparatus and methods for high-definition..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carrier recovery apparatus and methods for high-definition... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3966177