公开(公告)号：US5774440A

公开(公告)日：1998-06-30

申请号：US487354

申请日：1995-06-07

申请人： Noboru Kimura ,  Ronald G. Vitullo ,  Yasuhiro Yamazaki

发明人： Noboru Kimura ,  Ronald G. Vitullo ,  Yasuhiro Yamazaki

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30

CPC分类号： G11B27/3027 ,  G11B11/10506 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/1053 ,  G11B11/10597 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/1258 ,  G11B20/1426 ,  G11B20/1833 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/126 ,  G11B20/1262 ,  G11B2007/0006 ,  G11B2020/1434 ,  G11B2220/2525

摘要： A first write encoder encodes digital data in a first high density format. A second write encoder encodes digital data in a second low density, i.e. ANSI format. A first read decoder decodes digital data from the first format. A second read decoder decodes digital data from the second format. A disk drive receives a replaceable 90 millimeter optical disk. A read/write head reads encoded data from and writes encoded data to a 90 millimeter optical disk received by the drive. In a first mode, the first encoder is connected between a source of digital data and the read/write head, and the first decoder is connected between the read/write head and utilizing apparatus. In a second mode, the second encoder is connected between the source and the read/write head, and the second decoder is connected between the read/write head and the utilizing apparatus. Control electronics switches between the first and second modes, depending upon the format in which data is recorded on the disk received by the disk drive. An 8/9 GCR encoder and a laser pulse generator are used in the first write encoder to record data on the optical media to increase the storage capacity. Improvement in timing is accomplished with write compensation and signal equalization.

摘要翻译： 第一写入编码器以第一高密度格式对数字数据进行编码。 第二写入编码器以第二低密度即ANSI格式对数字数据进行编码。 第一读取解码器从第一格式解码数字数据。 第二读取解码器从第二格式解码数字数据。 磁盘驱动器接收可更换的90毫米光盘。 读/写头读取编码数据并将编码数据写入由驱动器接收的90毫米光盘。 在第一模式中，第一编码器连接在数字数据源和读/写头之间，第一解码器连接在读/写头与利用装置之间。 在第二模式中，第二编码器连接在源和读/写头之间，第二解码器连接在读/写头与利用装置之间。 控制电子设备在第一和第二模式之间切换，这取决于磁盘驱动器接收的磁盘上数据记录的格式。 在第一写入编码器中使用8/9 GCR编码器和激光脉冲发生器来在光学介质上记录数据以增加存储容量。 通过写入补偿和信号均衡来实现时序的改进。

公开(公告)号：US5757735A

公开(公告)日：1998-05-26

申请号：US691880

申请日：1996-08-01

申请人： William B. Fitzpatrick ,  John Deutschbein

发明人： William B. Fitzpatrick ,  John Deutschbein

IPC分类号： G11B11/105 ,  G11B11/00

CPC分类号： G11B11/1053 ,  G11B11/10506 ,  G11B11/10595

摘要： In a magneto-optical recording method and, more particularly, a bit position recording method, laser beam intensity is pulse-modulated between high and low levels according to data to be recorded. The modulated laser beam is radiated on a recording medium under the presence of a bias field. High-level emission time of the laser beam is shortened at the inner portion of the medium, and is prolonged at the outer portion. Low-level intensity of the laser beam is decreased at the inner portion of the medium, and is increased at the outer portion, thereby increasing C/N ratio upon reproduction.

摘要翻译： 更具体地说，在磁光记录方法中，比特位置记录方法根据要记录的数据在高电平和低电平之间对激光束强度进行脉冲调制。 在存在偏置场的情况下，将调制的激光束照射在记录介质上。 激光束的高电平发射时间在介质的内部被缩短，并且在外部被延长。 激光束的低电平强度在介质的内部减小，并且在外部增加，从而在再现时增加C / N比。

公开(公告)号：US5726955A

公开(公告)日：1998-03-10

申请号：US744760

申请日：1996-11-06

申请人： Seiji Yonezawa ,  Norio Ohta ,  Toshio Niihara ,  Keiji Kataoka ,  Masahiko Takahashi ,  Harukazu Miyamoto ,  Hirofumi Sukeda ,  Toshiaki Tsuyoshi

发明人： Seiji Yonezawa ,  Norio Ohta ,  Toshio Niihara ,  Keiji Kataoka ,  Masahiko Takahashi ,  Harukazu Miyamoto ,  Hirofumi Sukeda ,  Toshiaki Tsuyoshi

IPC分类号： G11B20/10 ,  G11B5/02 ,  G11B7/006 ,  G11B7/007 ,  G11B11/10 ,  G11B11/105 ,  G11B27/19 ,  G11B27/30 ,  G11B11/00

CPC分类号： G11B7/00745 ,  G11B11/10513 ,  G11B11/10521 ,  G11B11/10528 ,  G11B11/1053 ,  G11B11/10595 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/006

摘要： A magneto-optical data recording system comprises magnetic field pulse applying means for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and means for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying means applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating means continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying means includes a magnetic coil driven by code data from a source of code data (data generator). The heating means includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.

摘要翻译： 一种磁光数据记录系统，包括磁场脉冲施加装置，用于向磁光记录介质施加与要记录的代码数据相对应的极性的磁场脉冲，以及用于以脉动方式加热记录介质的装置， 与要记录的代码数据同步的预定频率。 在记录期间，磁场脉冲施加装置沿着记录介质的轨道施加与代码数据对应的极性的磁场脉冲，并且加热装置以与代码数据同步的预定频率的脉动方式连续地加热记录介质 从而直接覆盖代码数据。 磁场脉冲施加装置包括由代码数据源（数据发生器）的代码数据驱动的磁线圈。 加热装置包括光学头，其包括由激光驱动器驱动的激光束源和将来自激光源的激光束作为小光点聚焦到记录介质上的光学系统。

公开(公告)号：US5703855A

公开(公告)日：1997-12-30

申请号：US220428

申请日：1994-03-30

申请人： Fumiyoshi Kirino ,  Tsuyoshi Toda ,  Horishi Ide ,  Hisataka Sugiyama ,  Atsushi Saito ,  Hiroyuki Tsuchinaga ,  Takeshi Maeda ,  Fumio Kugiya ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Yasuhide Ouchi

发明人： Fumiyoshi Kirino ,  Tsuyoshi Toda ,  Horishi Ide ,  Hisataka Sugiyama ,  Atsushi Saito ,  Hiroyuki Tsuchinaga ,  Takeshi Maeda ,  Fumio Kugiya ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Yasuhide Ouchi

IPC分类号： G11B7/0045 ,  G11B7/095 ,  G11B7/125 ,  G11B11/105 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B7/0045 ,  G11B7/0956 ,  G11B20/1258 ,  G11B20/182

摘要： A super high density optical disk apparatus is obtained by using an exchangeable recording medium having a recording capacity of at least 1.5 Gb/in.sup.2 in an optical recording and reading apparatus for recording or reading at least using a laser beam or by using one of an element which can record on a recording medium only once and another element which can record at least two times repeatedly as recording elements to be used.

摘要翻译： 通过在至少使用激光束的记录或读取的光学记录和读取装置中使用具有至少1.5Gb / in2的记录容量的可交换记录介质来获得超高密度光盘装置，或者通过使用元件 其可以在记录介质上记录一次，另一个可以重复记录至少两次的元素作为要使用的记录元素。

公开(公告)号：US5623472A

公开(公告)日：1997-04-22

申请号：US427781

申请日：1994-03-02

申请人： Johannes L. Bakx ,  Jeroen J. L. Horikx

发明人： Johannes L. Bakx ,  Jeroen J. L. Horikx

IPC分类号： G11B11/10 ,  G11B5/02 ,  G11B7/0045 ,  G11B7/006 ,  G11B7/007 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B11/12 ,  G11B11/14 ,  G11B13/04 ,  G11B20/12 ,  G11B7/00 ,  G11B3/90 ,  G11B7/24

CPC分类号： G11B7/126 ,  G11B11/10517 ,  G11B11/1053 ,  G11B11/10595 ,  G11B7/0045 ,  G11B7/006 ,  G11B11/10584 ,  G11B7/24085

摘要： An apparatus and method for recording an information signal on a record carrier by means of a radiation beam which produces optically detectable marks in parallel track portions thereon having a substantially constant track pitch (q). The write intensity of the radiation beam is adjusted to an optimum level which results in a width (p) of the optical marks which corresponds to the track pitch (q). The optimum intensity level is determined by recording different test signals in adjoining track portions at various write intensities of the radiation beam, reading-out the recorded test signals, and detecting therefrom the write intensity at which signal components of one test signal no longer occur in another recorded test signal. Recording at the optimum write intensity results in a minimum block error rate (BLER) upon read-out of the recorded information signal.

摘要翻译： 一种用于通过辐射束在记录载体上记录信息信号的装置和方法，所述辐射束在其上具有基本上恒定的轨道间距（q）的平行轨道部分中产生光学可检测标记。 辐射束的写入强度被调整到最佳水平，这导致对应于轨道间距（q）的光学标记的宽度（p）。 通过在辐射束的各种写入强度下记录相邻轨道部分中的不同测试信号来确定最佳强度水平，读出所记录的测试信号，并从其中检测不再发生一个测试信号的信号分量的写入强度 另一个记录的测试信号。 以最佳写入强度进行记录在读出记录的信息信号时导致最小块错误率（BLER）。

公开(公告)号：US5581535A

公开(公告)日：1996-12-03

申请号：US434063

申请日：1995-05-03

申请人： Jun Saito ,  Shinichi Kurita

发明人： Jun Saito ,  Shinichi Kurita

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/105

CPC分类号： G11B11/1053 ,  G11B11/10595 ,  G11B7/126

摘要： In an optical recording method and apparatus, the intensity of a laser beam to be radiated onto an optical recording medium is raised from an intensity P.sub.pre for maintaining a pre-heat state, in which the temperature of the medium surface becomes a predetermined temperature, to an intensity P.sub.W1 higher than P.sub.pre, and after P.sub.W1 is maintained for a time T.sub.W1, the intensity is reduced to an intensity P.sub.W2 lower than P.sub.W1 to form a mark on the optical recording medium. P.sub.W2 is controlled so that the medium temperature at a peak temperature position or a spot center position of the laser beam radiated onto the medium surface after an elapse of the time T.sub.W1 becomes constant even after the intensity is reduced to P.sub.W2, and at least one of P.sub.pre, T.sub.off, and P.sub.LB is controlled to establish the pre-heat condition within a time period until the intensity is raised to P.sub.W1 again so as to form the next mark.

摘要翻译： 在光记录方法和装置中，将辐射到光记录介质上的激光束的强度从用于维持中等温度成为预定温度的预热状态的强度Ppre升高到 强度PW1高于Ppre，并且在PW1之后维持时间TW1，强度降低到低于PW1的强度PW2，以在光学记录介质上形成标记。 控制PW2，使得即使在强度降低到PW2之后，在经过时间TW1变得恒定之后激光束的峰值温度位置或点中心位置处的介质温度变得恒定，并且至少一个 控制Ppre，Toff和PLB在一段时间内建立预热条件，直到强度再次升高到PW1，以形成下一个标记。

公开(公告)号：US5577019A

公开(公告)日：1996-11-19

申请号：US434059

申请日：1995-05-03

申请人： Jun Saito ,  Shinichi Kurita

发明人： Jun Saito ,  Shinichi Kurita

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/105

CPC分类号： G11B11/1053 ,  G11B11/10595 ,  G11B7/126

摘要： In an optical recording method and apparatus, the intensity of a laser beam to be radiated onto an optical recording medium is raised from an intensity P.sub.pre for maintaining a pre-heat state, in which the temperature of the medium surface becomes a predetermined temperature, to an intensity P.sub.W1 higher than P.sub.pre, and after P.sub.W1 is maintained for a time T.sub.W1, the intensity is reduced to an intensity P.sub.W2 lower than P.sub.W1 to form a mark on the optical recording medium. P.sub.W2 is controlled so that the medium temperature at a peak temperature position or a spot center position of the laser beam radiated onto the medium surface after an elapse of the time T.sub.W1 becomes constant even after the intensity is reduced to P.sub.W2, and at least one of P.sub.pre, T.sub.off, and P.sub.LB is controlled to establish the pre-heat condition within a time period until the intensity is raised to P.sub.W1 again so as to form the next mark.

摘要翻译： 在光记录方法和装置中，将辐射到光记录介质上的激光束的强度从用于维持中等温度成为预定温度的预热状态的强度Ppre升高到 强度PW1高于Ppre，并且在PW1之后维持时间TW1，强度降低到低于PW1的强度PW2，以在光学记录介质上形成标记。 控制PW2，使得即使在强度降低到PW2之后，在经过时间TW1变得恒定之后激光束的峰值温度位置或点中心位置处的介质温度变得恒定，并且至少一个 控制Ppre，Toff和PLB在一段时间内建立预热条件，直到强度再次升高到PW1，以形成下一个标记。

公开(公告)号：US5574713A

公开(公告)日：1996-11-12

申请号：US232678

申请日：1994-04-25

申请人： Ikuo Aoki

发明人： Ikuo Aoki

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/105

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B7/0045

摘要： It is an object of the present invention to reduce a data error ratio in the mark edge recording method. In this invention, a corrected value of a record pulse is set by checking the data recording characteristics of an optically recording medium. For this reason, it is possible to adjust a length of a record mark to a specified value as well as to suppress errors such as data errors when data is regenerated.

摘要翻译： 本发明的目的是减小标记边缘记录方法中的数据错误率。 在本发明中，通过检查光学记录介质的数据记录特性来设置记录脉冲的校正值。 因此，可以将记录标记的长度调整为规定值，并且能够抑制数据再生时的数据错误等错误。

公开(公告)号：US5537381A

公开(公告)日：1996-07-16

申请号：US299848

申请日：1994-09-01

申请人： Hiroshi Fuji

发明人： Hiroshi Fuji

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

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/182 ,  G11B7/0045

摘要： A test-writing recording control method of the present invention forms a first recording pattern consisting of a combination of a first microarea in a first state, which is one of a recording mark or a non-mark section, and a second microarea in a second state, which is the other of the recording mark or the non-mark section and is shorter than a light beam diameter, and a second recording pattern consisting of a combination of a third microarea in the first state, which is longer than the first microarea, and the second microarea, to an optical recording medium by emitting a light beam, and sets a recording condition so that a level difference between reproduced signals corresponding to the first recording pattern and the second recording pattern becomes minimum. This makes it possible to set the recording condition for averaging heat interference in different recording patterns and to accurately record information.

摘要翻译： 本发明的测试写入记录控制方法形成第一记录模式，该第一记录模式由作为记录标记或非标记区之一的第一状态的第一微区和第二记录的第二微区组成 状态，其是记录标记或非标记部分中的另一个，并且比光束直径短;以及第二记录图案，其由第一状态的第三微区域的组合构成，该第三微区域比第一微区域 和第二微区域通过发射光束到达光学记录介质，并且设置记录条件，使得对应于第一记录图案和第二记录图案的再现信号之间的电平差变为最小。 这使得可以设置用于平均不同记录图案中的热干扰的记录条件并准确地记录信息。

公开(公告)号：US5513165A

公开(公告)日：1996-04-30

申请号：US149931

申请日：1993-11-10

申请人： Hiroshi Ide ,  Fumiyoshi Kirino ,  Tsuyashi Toda ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Fumio Kugiya ,  Kazuo Shigematsu ,  Seiichi Mita ,  Atsushi Saito ,  Toshimitsu Kaku

发明人： Hiroshi Ide ,  Fumiyoshi Kirino ,  Tsuyashi Toda ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Fumio Kugiya ,  Kazuo Shigematsu ,  Seiichi Mita ,  Atsushi Saito ,  Toshimitsu Kaku

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

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10212 ,  G11B20/1816 ,  G11B7/0045 ,  G11B11/10506 ,  G11B20/1258 ,  G11B7/013 ,  G11B7/24085

摘要： An optical recording control method determines an optimum recording laser power by effecting a test recording before information to be recorded is recorded on a disk. The recording laser power is formed of a plurality of powers. A relationship among the plurality of laser powers is regulated by power level ratios between respective powers, whereby a power used when a laser light is radiated on the disk can be controlled to be constant independent of an ambient temperature and a structure of a disk. Therefore, accurate recording marks can be formed on the disk.

摘要翻译： 光记录控制方法通过在待记录信息记录在盘上之前进行测试记录来确定最佳记录激光功率。 记录激光功率由多个功率形成。 多个激光功率之间的关系由各个功率之间的功率电平比来调节，由此当激光照射在盘上时使用的功率可以被控制为与环境温度和盘的结构无关地恒定。 因此，可以在盘上形成准确的记录标记。