Digital broadcasting system and data processing method

Details Digital broadcasting system and data processing method Digital broadcasting system and data processing method

2008-11-17

2011-12-27

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S346000, C455S073000

Reexamination Certificate

active

08085878

ABSTRACT:
A receiving system and data processing method therein are disclosed, by which mobile service data is received and processed. The receiving system comprises a tuner, a filter, an IQ mismatch processor, a gain controller and a demodulator. The tuner tunes radio frequency (RF) signals of a specific channel which includes mobile service data and main service data, converts the tuned RF signals into zero IF signals and outputs the converted zero IF signals. The filter performs low pass filtering for the zero IF signals output from the tuner. The IQ mismatch processor estimates and compensates IQ mismatch generated in the zero IF signals filtered by the filter. The gain controller controls gain of the zero IF signals by estimating a gain error of the zero IF signals output from the IQ mismatch processor. The demodulator performs carrier recovery and timing recovery by receiving the zero IF signals output from the gain controller.

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patent: 7593474 (2009-09-01), Jeong et al.
patent: 2006/0133548 (2006-06-01), Oh et al.
patent: 2007/0147432 (2007-06-01), Kang et al.
patent: 1020060133724 (2006-12-01), None

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