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    • 6. 发明申请
    • Method and Arrangement for Recovering a Binary DC-Free Code From a Frequency Modulated Signal
    • 从调频信号中恢复二进制无DC码的方法和装置
    • US20090052592A1
    • 2009-02-26
    • US11918157
    • 2006-04-04
    • Dirk SchmittAlkis IkonomuMarten Kabutz
    • Dirk SchmittAlkis IkonomuMarten Kabutz
    • H04L27/06
    • H04L27/1525H04L27/1566
    • The invention is related to a method and an arrangement for recovering a binary DC-free code from a frequency-modulated signal, without any analog signal demodulation of the frequency-modulated signal. The invention relates more particularly to an ATIP bi-phase channel bit and timing recovery in a deteriorated wobble channel as e.g. required for high speed recording on optical storage media. The arrangement comprises a digital phase lock loop and a phase detector uses a phase trellis and a maximum likelihood detection is applied to the phase trellis for providing a bi-phase channel bit signal and a bi-phase clock signal, which is in time with the sampling point for the bi-phase channel bit signal for recovering said binary code. The invention is also applicable for further data transmission systems based on frequency modulation as e.g. modem or wireless data communication systems.
    • 本发明涉及一种用于从频率调制信号中恢复二进制无DC码的方法和装置,而无需调频信号的任何模拟信号解调。 本发明更具体地涉及ATIP双相通道位和劣化摆动通道中的定时恢复。 在光存储介质上进行高速录制所需的。 该装置包括数字锁相环,相位检测器使用相位网格,并且将最大似然检测应用于相位网格,以提供双相通道位信号和双相时钟信号,该双相通道位信号和 用于恢复所述二进制码的双相通道位信号的采样点。 本发明也适用于基于频率调制的另外的数据传输系统。 调制解调器或无线数据通信系统。