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    • 1. 发明授权
    • Method of and apparatus for recording and reproducing data and
transmitting data
    • 用于记录,再现和发送数据的方法和装置
    • US5835509A
    • 1998-11-10
    • US546507
    • 1995-10-20
    • Yoichiro SakoSatoshi OtsukaTamotsu Yamagami
    • Yoichiro SakoSatoshi OtsukaTamotsu Yamagami
    • G11B20/18H03M13/35G06F11/10
    • G11B20/1833H03M13/35
    • First error-processing data are generated with respect to a predetermined amount of data, and second error-processing data are generated with respect to each of a plurality of blocks produced by dividing the predetermined amount of data. Data of record units are generated from the predetermined amount of data, the first error-processing data, and the second error-processing data. The data of record units are recorded on and reproduced from a recording medium. Errors are corrected in the predetermined amount of data in the reproduced data of record units with the first error-processing data with respect to each of the record units. If errors cannot be corrected, at least errors are detected in the predetermined amount of data in each of the blocks with the second error-processing data. If errors are detected in N (N is a positive integer) successive blocks, all data in at least one block which is not positioned at an end of the N successive blocks are regarded as being erased, thereby correcting errors in the predetermined amount of data in the record units with the first error-processing data, thus producing reproduced data.
    • 针对预定量的数据产生第一错误处理数据,并且相对于通过划分预定数据量而产生的多个块中的每一个生成第二错误处理数据。 从预定量的数据,第一错误处理数据和第二错误处理数据生成记录单元的数据。 记录单元的数据被记录在记录介质上并从记录介质再现。 相对于每个记录单元,具有第一错误处理数据的记录单元的再现数据中的预定数据量的错误被校正。 如果无法纠正错误,则在具有第二错误处理数据的每个块中的预定数量的数据中至少检测出错误。 如果在N(N是正整数)连续块中检测到错误,则将不位于N个连续块的末尾的至少一个块中的所有数据视为被擦除,从而校正预定量的数据中的错误 在具有第一错误处理数据的记录单元中,从而产生再现数据。
    • 3. 发明授权
    • Method of data recording for optical disc having burst modulated track
    • 具有突发调制轨迹的光盘的数据记录方法
    • US5311491A
    • 1994-05-10
    • US585177
    • 1990-09-20
    • Tamotsu YamagamiYoichiro Sako
    • Tamotsu YamagamiYoichiro Sako
    • G11B7/007G11B7/09G11B11/105G11B5/09
    • G11B7/0938G11B7/24082G11B11/10578
    • A method of recording information is provided, in which a first signal is recorded along the length of a recording track previously formed on a recording medium. On the recording track, a second signal is prerecorded by offsetting the track along its width. During the recording of the first signal, the points of transition of the first signal are positioned so as to be spaced apart from, and therefore unaffected by, the points of transition of the second signal. Also, by including a clock synchronization signal in the first signal, PLL capture may be achieved accurately in a shorter time. In addition, the unit of phase shift between the channel clock of the first signal and the channel clock of the second signal is set to be shorter than the channel clock bit. A data recording method and an optical data recording method are also provided, which may be suitably applied to a magneto-optical disc or the like. The data are previously modulated by a modulation system satisfying a predetermined rule of modulation and include connection bits between adjacent units of the modulated data by way of further modulation. Control information is recorded by offsetting the track along its width, while the points of transition of the track along its width coincide with the recording region for the connecting bits, since the latter are not part of the main signal information.
    • 提供了一种记录信息的方法,其中沿着预先形成在记录介质上的记录轨道的长度记录第一信号。 在记录轨道上,通过沿其宽度偏移轨迹来预先记录第二信号。 在记录第一信号期间,第一信号的转变点被定位成与第二信号的转变点间隔开,并且不受第二信号的转变点的影响。 此外,通过在第一信号中包括时钟同步信号,可以在更短的时间内精确地实现PLL捕获。 此外,将第一信号的通道时钟与第二信号的通道时钟之间的相移单位设置为短于通道时钟位。 还提供了数据记录方法和光学数据记录方法,其可以适用于磁光盘等。 数据预先由满足预定调制调制方式的调制系统调制,并通过进一步调制包括调制数据的相邻单元之间的连接位。 通过沿着其宽度偏移轨道来记录控制信息,而轨道沿其宽度的转变点与用于连接位的记录区域重合,因为后者不是主信号信息的一部分。