Techniques for generating modulation codes using running substitutions
    9.
    发明申请
    Techniques for generating modulation codes using running substitutions 有权
    使用运行替换产生调制码的技术

    公开(公告)号:US20060170578A1

    公开(公告)日:2006-08-03

    申请号:US11049554

    申请日:2005-02-01

    IPC分类号: H03M3/00

    CPC分类号: H03M5/145

    摘要: Techniques are provided for performing substitutions of bit sequences that are known to cause errors. Input data is initially modulation encoded. The modulated data is then analyzed in a sliding window to determine if it contains any additional bit sequences that are known to cause errors. If an error prone bit sequence is identified in the data, a substitution engine replaces the error prone bit sequence with a predetermined pattern of bits that is less likely to cause errors. The bit stream output of the substitution engine is then recorded on a storage medium. The recorded bit stream is decoded when it read from the medium. The decoding process identifies the substituted bit pattern and replaces the substituted pattern with the original sequence of bits.

    摘要翻译: 提供了用于执行已知导致错误的比特序列的替换的技术。 输入数据最初被调制编码。 然后在滑动窗口中分析调制的数据,以确定其是否包含已知导致错误的任何附加位序列。 如果在数据中识别出易出错位序列,则替换引擎以预定的不太可能引起错误的比特位替换易错位序列。 然后将替代引擎的比特流输出记录在存储介质上。 记录的比特流在从介质读取时被解码。 解码过程识别取代的位模式,并用原始的位序替换替换的模式。

    Techniques for using interleaved encoders to obtain modulation constraints
    10.
    发明申请
    Techniques for using interleaved encoders to obtain modulation constraints 有权
    使用交错编码器获得调制约束的技术

    公开(公告)号:US20060170577A1

    公开(公告)日:2006-08-03

    申请号:US11049403

    申请日:2005-02-01

    IPC分类号: H03M3/00

    CPC分类号: H03M5/145 G11B20/1426

    摘要: Techniques are provided for applying modulation constraints to data streams divided into separate interleaved portions. The even and odd bits in a data stream are separated into two data paths. A first modulation encoder encodes the even bits according to a first constraint. A second modulation encoder encodes the odd bits according to a second constraint. The two encoded data streams are then interleaved to form one data stream. The modulation encoders can encode the two data paths using Fibonacci encoding.

    摘要翻译: 提供了用于将调制约束应用于分成单独的交错部分的数据流的技术。 数据流中的偶数和奇数位被分成两个数据路径。 第一调制编码器根据第一约束对偶数位进行编码。 第二调制编码器根据第二约束对奇数位进行编码。 然后将两个编码的数据流交织以形成一个数据流。 调制编码器可以使用斐波纳契编码对两个数据路径进行编码。