发明授权
US08488064B2 DTV receiver and method of processing a broadcast signal in DTV receiver
有权
数字电视接收机和数字电视接收机处理广播信号的方法
- 专利标题: DTV receiver and method of processing a broadcast signal in DTV receiver
- 专利标题(中): 数字电视接收机和数字电视接收机处理广播信号的方法
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申请号: US13181441申请日: 2011-07-12
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公开(公告)号: US08488064B2公开(公告)日: 2013-07-16
- 发明人: Jong Moon Kim , In Hwan Choi
- 申请人: Jong Moon Kim , In Hwan Choi
- 申请人地址: KR Seoul
- 专利权人: LG Electronics Inc.
- 当前专利权人: LG Electronics Inc.
- 当前专利权人地址: KR Seoul
- 代理机构: Lee, Hong, Degerman, Kang & Waimey
- 优先权: KR10-2006-0002703 20060110; KR10-2006-0089736 20060915
- 主分类号: H04N5/38
- IPC分类号: H04N5/38
摘要:
A DTV receiver includes a tuner, an information detector, a demodulator, and a channel equalizer. The tuner receives a broadcast signal including valid data in which a known data sequence is periodically repeated. The information detector detects location information of the known data sequence and a coarse frequency offset value of the broadcast signal. The demodulator demodulates the broadcast signal by estimating a fine frequency offset value using the detected location information and by compensating a frequency offset of the broadcast signal using the course and fine frequency offset values. Finally, the channel equalizer compensates channel distortion of the demodulated signal using the detected location information.
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