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    Light modulation method for forming a mark in magneto-optical recording system
    5.
    发明授权
    Light modulation method for forming a mark in magneto-optical recording system 失效
    用于在磁光记录系统中形成标记的光调制方法

    公开(公告)号：US5457666A

    公开(公告)日：1995-10-10

    申请号：US114062

    申请日：1993-08-31

    申请人： Tsuyoshi Toda ,  Hiroshi Ide ,  Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu

    发明人： Tsuyoshi Toda ,  Hiroshi Ide ,  Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu

    IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/006 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B7/24

    CPC分类号： G11B7/126 ,  G11B11/10506 ,  G11B11/1053 ,  G11B7/0045 ,  G11B7/006

    摘要： A magneto-optical disk recording control method using the mark length recording method wherein the marks and gap regions between marks are recorded on the surface of the disk by maintaining a constant temperature distribution during the recording. The laser is driven to a non-recording level in gap regions between marks that exceed a base recording level used for reproduction of the marks. When a mark is recorded, the laser power is increased to a recording power level and after the mark has been recorded, the laser power level is reduced to the base power level, followed by being raised to the gap recording level. Control of the laser is performed by superposing a plurality of pulse trains that are synchronized with respect to a clock having a cycle T. The pulse trains are derived from the code train to be recorded and have pulses with a duration that is an integral multiple of (1/2)T. If the pulse width of the recording code train exceeds 2T, then the laser is controlled to reach a first power level in accordance with pulses of a first pulse train, be reduced to the gap recording level and then raised to a second power level in accordance with a second recording pulse train to maintain the temperature distribution constant during the recording of the mark. For the recording of longer marks, the laser is controlled to vary between the second power level and the gap recording level.

    摘要翻译： 一种使用标记长度记录方法的磁光盘记录控制方法，其中通过在记录期间保持恒定的温度分布将标记之间的标记和间隙区域记录在盘的表面上。 在超过用于再现标记的基本记录水平的标记之间的间隙区域中激光被驱动到非记录水平。 当记录标记时，激光功率增加到记录功率水平，并且在记录标记之后，激光功率水平降低到基本功率水平，然后升高到间隙记录水平。 通过叠加相对于具有周期T的时钟同步的多个脉冲串来执行激光的控制。脉冲序列是从要被记录的代码序列导出的，具有持续时间为整数倍的脉冲 （1/2）T。 如果记录代码串的脉冲宽度超过2T，则根据第一脉冲序列的脉冲将激光器控制到达到第一功率电平，减小到间隙记录电平，然后依次升高到第二功率电平 具有第二记录脉冲串，以在记录记录期间保持温度分布恒定。 为了记录更长的标记，激光器被控制在第二功率电平和间隙记录电平之间变化。

    Magneto-optical recording system using recording waveform having a plurality of power levels providing high recording density
    6.
    发明授权
    Magneto-optical recording system using recording waveform having a plurality of power levels providing high recording density 失效
    使用具有提供高记录密度的多个功率电平的记录波形的磁光记录系统

    公开(公告)号：US5463600A

    公开(公告)日：1995-10-31

    申请号：US225315

    申请日：1994-04-08

    申请人： Fumiyoshi Kirino ,  Atsushi Saito ,  Tsuyoshi Toda ,  Hiroshi Ide ,  Hiroyuki Tsuchinaga ,  Takeshi Maeda ,  Fumio Kugiya

    发明人： Fumiyoshi Kirino ,  Atsushi Saito ,  Tsuyoshi Toda ,  Hiroshi Ide ,  Hiroyuki Tsuchinaga ,  Takeshi Maeda ,  Fumio Kugiya

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B20/12 ,  G11C13/06 ,  G11B13/04

    CPC分类号： G11B11/10506 ,  G11B11/10595 ,  G11C13/06

    摘要： A magneto-optical disk system includes a magneto-optical disk and a disk drive. The magneto-optical disk drives provides a function of controlling the shape of a recorded domain by using a short wavelength laser beam and a test recording and a function of recording a using a pulse train. The magneto-optical disk has a laminated layer structure capable of obtaining a high S/N ratio and stabilizing a heat conduction. The magneto-optical disk drive with the recorded domain shape control function using a short wavelength laser beam and a test recording and with the pulse train recording record function is organically coupled with the magneto-optical disk having the laminated layer structure with a stabilized heat conduction to make the disk and the disk drive have an integrity therebetween, providing a magneto-optical disk having a recording capacity four times as large as the first generation magneto-optical disk system.

    摘要翻译： 磁光盘系统包括磁光盘和磁盘驱动器。 磁光盘驱动器通过使用短波长激光束和测试记录以及使用脉冲串记录功能来提供控制记录域的形状的功能。 磁光盘具有能够获得高S / N比并稳定热传导的叠层结构。 具有使用短波长激光束和测试记录并具有脉冲串记录记录功能的记录域形状控制功能的磁光盘驱动器与具有稳定的热传导的层叠层结构的磁光盘有机耦合 为了使盘和盘驱动器之间具有完整性，提供具有与第一代磁光盘系统相同的四倍的记录容量的磁光盘。

    Recording method using trial write test pattern
    7.
    发明授权
    Recording method using trial write test pattern 失效
    录音方式采用试写式测试模式

    公开(公告)号：US5732061A

    公开(公告)日：1998-03-24

    申请号：US731243

    申请日：1996-10-11

    申请人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

    发明人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00

    CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10212 ,  G11B20/1816 ,  G11B7/0045 ,  G11B7/1267 ,  G11B11/10506 ,  G11B11/10508 ,  G11B20/1258 ,  G11B7/24085

    摘要： In a write control method on an optical recording, at least one shift amount selected from the defocus amount of a laser beam on a recording medium, the shift amount of a recording position on a recording track and the shift amount of laser power during recording is controlled such that the selected amount falls within a predetermined range. Subsequently, a trial signal is trially recorded at a plurality of trial zones on the recording medium by using a laser power value as a parameter. The recorded trial signal is read and a difference .DELTA.V between center levels of a highest density waveform and a lowest density waveform is detected. In connection with each trial zone, the laser power value when a reading trial signal which makes the difference .DELTA.V minimum is recorded is defined as an optimum recording power value. Regular data is recorded at a predetermined storage area on the recording medium by using an optimum laser power value determined in connection with a trial zone closest to the predetermined storage area.

    摘要翻译： 在光学记录中的写入控制方法中，从记录介质上的激光束的散焦量，记录轨道上的记录位置的偏移量和记录期间的激光功率的移动量选择的至少一个偏移量是 被控制使得所选择的量落在预定范围内。 随后，通过使用激光功率值作为参数，在记录介质上的多个试验区上试用信号。 读取记录的试验信号，并检测最高密度波形的中心水平和最低密度波形之间的差ΔTA。 结合每个试验区域，当记录使DELTA V最小值的读取试验信号被记录时的激光功率值被定义为最佳记录功率值。 通过使用与最接近预定存储区域的试验区域确定的最佳激光功率值，将正常数据记录在记录介质上的预定存储区域。

    Method of controlling recording of optical records
    9.
    发明授权
    Method of controlling recording of optical records 失效
    控制光学记录记录的方法

    公开(公告)号：US5590111A

    公开(公告)日：1996-12-31

    申请号：US91003

    申请日：1993-07-13

    申请人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

    发明人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00 ,  G11B3/90 ,  G11B5/09

    CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10212 ,  G11B20/1816 ,  G11B7/0045 ,  G11B7/1267 ,  G11B11/10506 ,  G11B11/10508 ,  G11B20/1258 ,  G11B7/24085

    摘要： In a write control method on an optical recording, at least one shift amount selected from the defocus amount of a laser beam on a recording medium, the shift amount of a recording position on a recording track and the shift amount of laser power during recording is controlled such that the selected amount falls within a predetermined range. Subsequently, a trial signal is trially recorded at a plurality of trial zones on the recording medium by using a laser power value as a parameter. The recorded trial signal is read and a difference .DELTA.V between center levels of a highest density waveform and a lowest density waveform is detected. In connection with each trial zone, the laser power value when a reading trial signal which makes the difference .DELTA.V minimum is recorded is defined as an optimum recording power value. Regular data is recorded at a predetermined storage area on the recording medium by using an optimum laser power value determined in connection with a trial zone closest to the predetermined storage area.

    摘要翻译： 在光学记录中的写入控制方法中，从记录介质上的激光束的散焦量，记录轨道上的记录位置的偏移量和记录期间的激光功率的移动量选择的至少一个偏移量是 被控制使得所选择的量落在预定范围内。 随后，通过使用激光功率值作为参数，在记录介质上的多个试验区上试用信号。 读取记录的试验信号，并检测最高密度波形的中心水平和最低密度波形之间的差ΔTA。 结合每个试验区域，当记录使DELTA V最小值的读取试验信号被记录时的激光功率值被定义为最佳记录功率值。 通过使用与最接近预定存储区域的试验区域确定的最佳激光功率值，将正常数据记录在记录介质上的预定存储区域。

    Information recording method and optical disk apparatus using same
    10.
    发明授权
    Information recording method and optical disk apparatus using same 失效
    信息记录方法和使用其的光盘装置

    公开(公告)号：US5333126A

    公开(公告)日：1994-07-26

    申请号：US16897

    申请日：1993-02-12

    申请人： Yasushi Fukuda ,  Hiroshi Ide ,  Atsushi Saito ,  Takeshi Maeda ,  Fumiyoshi Kirino ,  Tsuyoshi Toda

    发明人： Yasushi Fukuda ,  Hiroshi Ide ,  Atsushi Saito ,  Takeshi Maeda ,  Fumiyoshi Kirino ,  Tsuyoshi Toda

    IPC分类号： G11B7/0045 ,  G11B20/12 ,  G11B20/14 ,  G11B27/30 ,  G11B5/76 ,  G11B5/09

    CPC分类号： G11B20/1217 ,  G11B20/1426 ,  G11B27/3027 ,  G11B7/0045 ,  G11B2220/20

    摘要： When record marks are recorded on a recording medium while making a code symbol "1" of data by obtained coding write information according to a coding system having no DC free property correspond to every edge of the record marks, the recording is effected while inserting resynchronizing signals into the write information with a constant interval. For the resynchronizing signal either one selected between a first resynchronizing code pattern, in which the number of symbols "1" contained therein is even, and a second resynchronizing code pattern, in which the number of symbols "1" is odd, so that an accumulated charge obtained from the run length of the coded data approaches zero is used. Each of the first and the second resynchronizing code pattern contains at least a specified pattern, which doesn't meet the coding rule. The selection is effected by adding a run length switching code to the resynchronizing signal and by switching it to "0" or "1" depending on an output of a run length measuring circuit and a run length judging circuit. In this way it is possible to suppress fluctuations in the level of a reproduced signal obtained from the record marks recorded on the recording medium and to realize a stable data detection by using the original waveform detection method, by which the reproduced signal is converted into a binary signal by using a suitable slice level.

    摘要翻译： 当记录标记被记录在记录介质上时，通过根据不具有直流自由特性的编码系统获得的编码写入信息，使数据的代码符号“1”对应于记录标记的每个边缘，记录是在插入再同步 以恒定的间隔将信号写入信息。 对于再同步信号，其中在其中包含在其中的符号“1”的数量为偶数的第一重新同步码模式和符号“1”的数量为奇数的第二再同步码模式之间选择，使得 使用从编码数据的游程长度获得的累积电荷接近零。 第一和第二再同步代码模式中的每一个至少包含指定的模式，其不符合编码规则。 通过将游程长度切换码添加到重新同步信号并根据游程长度测量电路和游程长度判断电路的输出将其切换为“0”或“1”来进行选择。 以这种方式，可以抑制从记录在记录介质上的记录标记获得的再现信号的电平的波动，并且通过使用原始波形检测方法来实现稳定的数据检测，通过该原始波形检测方法将再现信号转换成 二进制信号通过使用合适的限幅电平。