Digital broadcast receiver, mobile terminal and channel...

Details Digital broadcast receiver, mobile terminal and channel... Digital broadcast receiver, mobile terminal and channel...

2006-10-26

2010-11-16

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S240280

Reexamination Certificate

active

07835475

ABSTRACT:
A tuner selects a channel in a designated frequency band. An FFT circuit converts a received signal in the selected channel into a plurality of carrier signals. A carrier shift detection circuit calculates the correlation between the phase information of each carrier signal and reference phase information prepared in advance. If the correlation is larger than a given threshold, it is determined that an OFDM signal is present in the search target channel. A TMCC extraction circuit analyzes the TMCC of the received signal and determines whether or not digital broadcasts of the search target channel can be received.

REFERENCES:
patent: 5960030 (1999-09-01), Maruyama
patent: 6111919 (2000-08-01), Yonge, III
patent: 6341123 (2002-01-01), Tsujishita et al.
patent: 2002/0003773 (2002-01-01), Okada et al.
patent: 2002/0061076 (2002-05-01), Seki et al.
patent: 2003-110536 (2003-04-01), None
patent: 2005-333190 (2005-12-01), None

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