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    • 9. 发明授权
    • Read channel circuit and method for decoding using reduced-complexity error correction
    • 读通道电路和解码方法使用复杂度较低的纠错
    • US06757863B2
    • 2004-06-29
    • US09953869
    • 2001-09-18
    • Toshihiko KaneshigeTamotsu Ishigaki
    • Toshihiko KaneshigeTamotsu Ishigaki
    • H03M1300
    • G11B20/10G11B20/18H03M13/47
    • A decoding technique is disclosed for proving inexpensively a read channel circuit which has an error correction function and is applicable to high channel frequencies. In this read channel circuit, generating a reference slice level signal and a plurality of slice level signals which are different from the reference slice level signal, converting the playback signal into a plurality of binary signals synchronized with a channel clock according to each of the slice level signals, selecting two binary signals, measuring the phase distance between the two binary signals, judging the polarity of an inverted edge of a reference binary signal, and generating an error correction signal on the basis of the phase distance and the polarity of the inverted edge of the reference binary signal, whereby any error in the playback signal can be eliminated.
    • 公开了一种解码技术,用于廉价地证明具有纠错功能并且适用于高信道频率的读通道电路。 在该读通道电路中,产生与参考限幅电平信号不同的参考限幅电平信号和多个限幅电平信号,根据每个切片将重放信号转换成与信道时钟同步的多个二进制信号 电平信号,选择两个二进制信号,测量两个二进制信号之间的相位距离,判断参考二进制信号的反相边沿的极性,并根据反相的相位距离和极性产生纠错信号 参考二进制信号的边沿,由此可以消除重放信号中的任何错误。
    • 10. 发明授权
    • Recording medium, signal recording apparatus thereof and signal
reproducing apparatus thereof
    • 记录介质,其信号记录装置和信号再现装置
    • US5956306A
    • 1999-09-21
    • US848177
    • 1997-04-29
    • Yoshiyuki IshizawaToshihiko Kaneshige
    • Yoshiyuki IshizawaToshihiko Kaneshige
    • G11B7/0045G11B7/005G11B7/007G11B7/013G11B20/12G11B20/14G11B20/18G11B27/30G11B7/00
    • G11B20/1833G11B20/12G11B20/1217G11B20/1426G11B27/3027G11B7/0045G11B7/005G11B7/00745G11B7/013G11B2220/20
    • A recording medium, a signal recording apparatus thereof, and a signal reproducing apparatus thereof, the recording medium having a recording area divided into sectors, each of which is composed of a plurality of frames with a predetermined bit length, wherein at least one of the frames contains a first synchronous pattern representing the length of the frame, a second synchronous pattern composed of a predetermined signal pattern that is not present in a signal pattern of user data and representing the period of the sector, identification data disposed at a predetermined position corresponding to the second synchronous pattern and identifying the sector, and error detection data for detecting an error of the identification data, and wherein each of the other frames contains the first synchronous pattern, the user data, and at least predetermined fixed data with which the second synchronous pattern is substituted and that is present in a signal pattern of the user data, the identification data, the error detection data, and error correction data for correcting an error of the user data.
    • 一种记录介质,其信号记录装置及其信号再现装置,所述记录介质具有划分成扇区的记录区域,每个区段由具有预定位长度的多个帧组成,其中至少一个 帧包含表示帧的长度的第一同步模式,由预定信号模式组成的第二同步模式,该预定信号模式不存在于用户数据的信号模式中并且表示扇区的周期,识别数据被布置在对应的预定位置 到第二同步模式并识别扇区,以及用于检测识别数据的错误的错误检测数据,并且其中每个其他帧包含第一同步模式,用户数据以及至少预定的固定数据,其中第二同步模式 同步模式被替代,并且存在于用户数据的标识符的信号模式中 离子数据,误差检测数据和用于校正用户数据的误差的纠错数据。