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    • 5. 发明授权
    • Data modulation method, modulator, recording method, and recording apparatus
    • 数据调制方法,调制器,记录方法和记录装置
    • US08495461B2
    • 2013-07-23
    • US12678682
    • 2008-09-11
    • Jun Lee
    • Jun Lee
    • H03M13/00
    • G11B20/1426G11B7/0045G11B20/10055G11B20/1833G11B2020/185
    • A data modulation method and a data error correction method are provided. The data modulation method includes generating a channel sequence for an input sequence, determining whether or not the channel sequence violates a Run Length Limit (RLL) constraint, and performing, when the channel sequence violates the RLL constraint, bit flip at a position prior to a position at which the RLL constraint is violated among positions of bits included in the channel sequence. The data error correction method includes detecting an error bit of received data using a parity check matrix, determining whether or not the error bit is an error caused by bit flip, and correcting the error bit when the error bit is an error caused by bit flip for applying an RLL constraint.
    • 提供了数据调制方法和数据纠错方法。 数据调制方法包括产生用于输入序列的信道序列,确定信道序列是否违反运行长度限制(RLL)约束,并且当信道序列违反RLL限制时,执行比特翻转 在通道序列中包含的位的位置之间违反RLL约束的位置。 数据纠错方法包括使用奇偶校验矩阵检测接收到的数据的错误位,确定错误位是否是由位翻转引起的错误,以及当错误位是由位翻转引起的错误时校正错误位 用于应用RLL约束。