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    • 7. 发明公开
    • 데이터 저장 시스템의 판독 등화기
    • 阅读数据存储系统的均衡器
    • KR1020060132548A
    • 2006-12-21
    • KR1020067003768
    • 2004-08-09
    • 코닌클리케 필립스 엔.브이.
    • 오떼롭
    • G11B20/10
    • G11B20/10009G11B2020/1288G11B2220/2541
    • A device for scanning a track on a record carrier for reading information has a head for generating a read signal. Marks in the track have a number of different shapes for representing the information. The device processes the read signal by a combination of a linear equalizer (81) and a non-linear equalizer (89). The linear equalizer (81) is arranged for equalizing based on a mark having a single predefined shape, and the non-linear equalizer (89) is arranged for reducing inter symbol interference in the read signal for marks having a different shape then said predefined shape. The inter symbol interference remaining in the read signal is effectively reduced by the non-linear equalizer (89) because it is optimized based on the fact that said linear equalizer (81) is optimized on said single predefined shape.
    • 用于扫描用于读取信息的记录载体上的轨道的装置具有用于产生读取信号的头部。 轨道中的标记有许多不同的形状来表示信息。 该装置通过线性均衡器(81)和非线性均衡器(89)的组合处理读取信号。 线性均衡器(81)被布置为基于具有单个预定形状的标记进行均衡,并且布置非线性均衡器(89),用于减小具有不同形状的标记的读取信号中的符号间干扰,然后所述预定形状 。 由于非线性均衡器(89)基于所述线性均衡器(81)在所述单个预定形状上被优化的事实而被优化,所以读取信号中剩余的符号间干扰被有效地减少。