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    • 3. 发明申请
    • System, Multi-Stage Equalizer and Equalization Method
    • 系统,多阶段均衡和均衡方法
    • US20080095225A1
    • 2008-04-24
    • US11550557
    • 2006-10-18
    • Wei-Ting WangMing-Luen LiouYi-Ching Liao
    • Wei-Ting WangMing-Luen LiouYi-Ching Liao
    • H03H7/30
    • H04L25/03057H04L25/067H04L2025/03503H04L2025/03611
    • A system, a multi-stage equalizer and a method for generating an equalized signal in response to a received signal are provided. The multi-stage equalizer comprises a first DFE, and a second DFE. The first DFE generates a first signal in response to the received signal. The second DFE generates a second signal in response to the first signal, subtracts the second signal from a third signal to generate a fourth signal, and generates the equalized signal in response to the fourth signal, wherein the fourth signal is an unsliced signal. The method comprises steps of: providing a first DFE to generate a first signal in response to the received signal; providing a second DFE to generate a second signal in response to the first signal and to subtract the second signal from a third signal to generate a fourth signal; and generating the equalized signal in response to the fourth signal.
    • 提供了一种系统,多级均衡器和用于响应于接收信号产生均衡信号的方法。 多级均衡器包括第一DFE和第二DFE。 第一DFE响应于接收到的信号产生第一信号。 第二DFE响应于第一信号产生第二信号,从第三信号中减去第二信号以产生第四信号,并响应于第四信号产生均衡信号,其中第四信号是未被发送的信号。 该方法包括以下步骤:提供第一DFE以响应于所接收的信号产生第一信号; 提供第二DFE以响应于第一信号产生第二信号,并从第三信号中减去第二信号以产生第四信号; 以及响应于所述第四信号产生所述均衡信号。
    • 5. 发明授权
    • Selective slicing equalizer
    • 选择性切片均衡器
    • US08116364B2
    • 2012-02-14
    • US11736699
    • 2007-04-18
    • Yih-Ming TsuieWei-Ting Wang
    • Yih-Ming TsuieWei-Ting Wang
    • H03H7/30
    • H04L25/03057H04L2025/03598H04L2025/03681H04L2025/03726
    • An equalizer. The equalizer, either operated in a blind mode or a decision directed mode, comprises a feed-forward filter, a feedback filter, a decision device, a control circuit, and a multiplexer. The feed-forward filter receives an input signal. The feedback filter filters an equalized signal. The combiner combines the feed-forward filtered signal and the feedback filtered signal. The decision device maps the combined signal to one symbol of a symbol set. The control circuit receives the combined output and generates a slice control signal. The multiplexer selects the combined signal or the mapped signal as the equalized according to the slice control signal when operated in the blind mode.
    • 均衡器 以盲模式或决策指示模式操作的均衡器包括前馈滤波器,反馈滤波器,判定装置,控制电路和多路复用器。 前馈滤波器接收输入信号。 反馈滤波器滤除均衡信号。 组合器组合前馈滤波信号和反馈滤波信号。 决定装置将组合的信号映射到符号集合的一个符号。 控制电路接收组合输出并产生一个片控制信号。 当在盲模式下操作时,复用器根据片控制信号选择组合信号或映射信号作为均衡。
    • 7. 发明申请
    • DECISION FEEDBACK EQUALIZERS AND EQUALIZING METHODS THEREOF
    • 决策反馈均衡器及其均衡方法
    • US20080205504A1
    • 2008-08-28
    • US11678624
    • 2007-02-26
    • Yih-Ming TsuieYao-Tang ChouWei-Ting Wang
    • Yih-Ming TsuieYao-Tang ChouWei-Ting Wang
    • H03K5/159
    • H04L25/03019H04L25/03057H04L2025/03681H04L2025/03707
    • Decision feedback equalizers and related equalizing method are provided. One proposed decision feedback equalizer includes: a feed-forward filter for filtering an incoming signal to generate a filtered signal; a feedback filter for generating a feedback signal according to a decision signal; an operating device, coupled to the feed-forward filter and the feedback filter, for generating an output signal according to the filtered signal and the feedback signal; a decision device, coupled to the operating device and the feedback filter, for generating the decision signal according to the output signal; and an updating device coupled to the feedback filter for constraining coefficients of predetermined taps of the feedback filter while updating the tap coefficients of the feedback filter; wherein each predetermined tap of the feedback filter corresponds to a tap of the feed-forward filter.
    • 提供了决策反馈均衡器和相关均衡方法。 一种提出的判决反馈均衡器包括:前馈滤波器,用于对输入信号进行滤波以产生滤波信号; 反馈滤波器,用于根据判定信号产生反馈信号; 耦合到前馈滤波器和反馈滤波器的操作装置,用于根据滤波信号和反馈信号产生输出信号; 耦合到所述操作装置和所述反馈滤波器的判定装置,用于根据所述输出信号产生所述判定信号; 以及更新装置,其耦合到所述反馈滤波器,用于在更新所述反馈滤波器的抽头系数的同时约束所述反馈滤波器的预定抽头的系数; 其中反馈滤波器的每个预定抽头对应于前馈滤波器的抽头。
    • 8. 发明授权
    • Digital television receiver and method of recovering incoming digital television signal
    • 数字电视接收机和恢复传入数字电视信号的方法
    • US07218359B2
    • 2007-05-15
    • US10710635
    • 2004-07-26
    • Bao-Chi PengCheng-Yi HuangWei-Ting Wang
    • Bao-Chi PengCheng-Yi HuangWei-Ting Wang
    • H04N5/44H04N5/50H04L27/00H04B1/06
    • H03J1/0008H04N5/4401H04N5/50H04N21/42607H04N21/4382
    • A digital television receiver includes a tuner for down-converting an incoming signal to produce a down-converted signal according to a local oscillator signal corresponding to a selected channel. A filter is coupled to the tuner for filtering the down-converted signal to produce an intermediate frequency (IF) signal. A carrier recovery unit is coupled to the filter for locking to a carrier frequency of the IF signal, and a pre-shift unit is coupled to the tuner. By shifting the local oscillator signal in a first direction by a predetermined first frequency shift in a first phase of carrier recovery, and then by shifting the local oscillator signal in a second direction by a second frequency shift in a second phase of carrier recovery, the pre-shift unit ensures a pilot tone of a selected channel is not filtered from the down-converted signal by the filter.
    • 数字电视接收机包括调谐器,用于根据对应于所选频道的本地振荡器信号对输入信号进行下变频以产生下变频信号。 滤波器耦合到调谐器以对下变频信号进行滤波以产生中频(IF)信号。 载波恢复单元耦合到滤波器,用于锁定IF信号的载波频率,并且预移位单元耦合到调谐器。 通过在载波恢复的第一阶段中将第一方向上的本地振荡器信号移位预定的第一频移,然后在载波恢复的第二阶段中将本地振荡器信号在第二方向上移位第二频移, 预移位单元确保所选频道的导频音不被滤波器从经下变频的信号滤波。