Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-10-09
2007-10-09
Kumar, Pankaj (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
10391871
ABSTRACT:
A digital subscriber line (DSL) receiver includes a discrete multitone (DMT) receiver circuit operative to receive a DSL signal and to generate signal samples corresponding to respective frequency division multiplexed tones of the DSL signal. The receiver further includes a synchronization circuit operative to determine phase information for a crosstalk source indication signal, e.g., an integrated services digital network (ISDN) timing reference indication signal, carried by one of the plurality of frequency-division multiplexed tones from the signal samples generated by the DMT receiver circuit and to determine frame timing for the DSL signal responsive to the determined phase information. The DMT receiver circuit may include a buffer operative to receive and store samples of the DSL signal, and a fast Fourier transformer (EFT) operative to generate the signal samples for the respective ones of the plurality of frequency-division multiplexed tones from the stored samples of the DSL signal. The synchronization circuit may be operative to control transfer of stored samples of the DSL signal from the buffer to the FFT responsive to the determined phase information.
REFERENCES:
patent: 6751261 (2004-06-01), Olsson et al.
patent: 6912261 (2005-06-01), Aslanis et al.
patent: 6965617 (2005-11-01), Hasegawa et al.
patent: 7075997 (2006-07-01), Duncan
patent: 10-2003-60312 (2003-07-01), None
Notice to Submit Response, Korean Application No. 2002-28477, Jul. 5, 2004.
Han Dong-Hee
Jeong Jun-Young
Kumar Pankaj
Myers Bigel & Sibley & Sajovec
Samsung Electronics Co,. Ltd.
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