首页> 外国专利> Tracking error detection system having at least two magnetic heads with opposite azimuths and circuitry for detecting tracking error by determining a phase difference of output signals from all circuits based on signals produced by the magnetic heads

Tracking error detection system having at least two magnetic heads with opposite azimuths and circuitry for detecting tracking error by determining a phase difference of output signals from all circuits based on signals produced by the magnetic heads

机译:具有至少两个具有相反方位角的磁头的跟踪误差检测系统以及用于通过基于由磁头产生的信号确定来自所有电路的输出信号的相位差来检测跟踪误差的电路

摘要

Disclosed is a tracking error detection system in a digital magnetic recording/reproducing apparatus for recording/reproducing a digital signal, in which a digital signal recorded by means of a magnetic head having an azimuth is reproduced to thereby produce a reproduction clock signal and the phase or period of the reproduction clock signal is measured to thereby detect a tracking error. Since the tracking error can be known every time the phase or period of the reproduction clock signal is measured, it is possible to detect the tracking error including the linearity of a recording track and it is possible to improve the accuracy in tracking error detection. Further, since no pilot signal or the like is frequency-multiplexed on a low frequency, the recording digital is not affected.
机译:公开了一种用于记录/再现数字信号的数字磁记录/再现设备中的跟踪误差检测系统,其中,借助于具有方位角的磁头记录的数字信号被再现,从而产生再现时钟信号和相位。测量再现时钟信号的周期或周期,从而检测跟踪误差。由于每次测量再现时钟信号的相位或周期就可以知道跟踪误差,因此可以检测包括记录轨道的线性的跟踪误差,并且可以提高跟踪误差检测的精度。此外,因为没有导频信号等在低频上被频率多路复用,所以记录数字不受影响。

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