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公开(公告)号:US4907100A
公开(公告)日:1990-03-06
申请号:US248123
申请日:1988-09-23
申请人: Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
发明人: Nobumasa Nishiyama , Makoto Saito , Yasuhide Ouchi , Yasuhiro Katoh , Yoshihasa Kamo , Makoto Koizumi , Hajime Aoi , Naoki Sato , Reijiro Tsuchiya
CPC分类号: G11B20/10212 , G11B20/182 , G11B5/035
摘要: A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and is set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
摘要翻译: 公开了一种磁记录装置中的读出电路,其中用于检测自动均衡器的特性误差的测试数据信号被记录在磁记录介质的每个磁迹的预定位置。 在读出模式下,首先读取所选轨道的测试数据信号,并根据系统条件将该信号与参考信号进行比较,以确定参考信号的误差。 确定最佳均衡系数以从参考信号中消除该误差,并将其设置在均衡器中。 在如此设置的最佳均衡特性下读出数据。