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    • 43. 发明授权
    • Method for reading magnetic super resolution type magneto-optical
recording medium
    • 磁性超分辨率型磁光记录介质的读取方法
    • US5986977A
    • 1999-11-16
    • US883549
    • 1997-06-26
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • G11B11/10G11B5/596G11B11/105G11B11/00
    • G11B11/10515G11B11/10508G11B11/10513G11B11/10523G11B11/10573G11B11/10595G11B5/59677
    • A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
    • 提供了一种用于磁光记录介质的读取方法,照射激光作为读取光束并使用磁头。 高密度和高透射率是可能的,并且可以通过读取磁光记录介质,同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。 在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中,聚焦的激光以 使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。 读取磁光记录介质,同时施加加速至少将记录层的磁化转录到读取层中的磁场161。
    • 44. 发明申请
    • MODULATED SIGNAL DETECTING APPARATUS AND MODULATED SIGNAL DETECTING METHOD
    • 调制信号检测装置和调制信号检测方法
    • US20130271823A1
    • 2013-10-17
    • US13817952
    • 2012-08-16
    • Kiyotaka ItoYasumori Hino
    • Kiyotaka ItoYasumori Hino
    • G02F2/00
    • G02F2/00G11B7/1365G11B7/1395G11B20/10268H04B10/6165H04L27/223H04L27/2271
    • A phase difference error detecting unit detects a phase difference error component included in a phase difference component; a phase difference correcting unit corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately π/2 based on the detected phase difference error component; a phase operating unit operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit; and the phase difference correcting unit obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.
    • 相位差误差检测单元检测包括在相位差分量中的相位差误差分量; 相位差校正单元根据所检测到的相位差误差将具有相位差分量的第一信号校正为余弦函数的角度,以及余弦函数的角度与第一信号的角度不同于大约pi / 2的第二信号 零件; 相位操作单元对来自第一信号的相位差分量和由相位差校正单元校正的第二信号进行操作; 并且相位差校正单元通过将由第一信号和第二信号表示的坐标点在极坐标平面上旋转与相位差误差分量相对应的角度来获得校正的第一信号和校正的第二信号。
    • 49. 发明授权
    • Optical disk device with coma aberration correction
    • 具有彗差校正的光盘设备
    • US08098555B2
    • 2012-01-17
    • US11572429
    • 2005-07-21
    • Kenji KondoShinichi YamadaYasumori Hino
    • Kenji KondoShinichi YamadaYasumori Hino
    • G11B7/00
    • G11B7/0945G11B7/0956G11B7/13925G11B2007/0013
    • The optical disc apparatus according to the present invention includes a tilt detecting means; a coma aberration correcting means; and a spherical aberration correcting means. Based on the result of a tilt detection, the amount of the correction performed by the coma aberration correcting means is determined so that the amount of correction is constant for the whole circumference of an optical disc, and then a spherical aberration is corrected by the spherical aberration correcting means. Thus, it is possible to correct the spherical aberration that has occurred due to the coma aberration correcting means, while the tilt margin is secured, thereby improving the reliability of reproduction and recording by the optical disc apparatus. Further, the optical disc apparatus according to the present invention is configured, in the case where a thermal shock tilt has occurred during the activation of the apparatus, to wait until the thermal shock tilt has settled. Thus, it is possible to perform the activation while the influence of the thermal shock tilt is avoided, thereby improving the reliability of the recording and reproduction operations by the optical disc apparatus.
    • 根据本发明的光盘装置包括倾斜检测装置, 彗形像差校正装置; 和球面像差校正装置。 基于倾斜检测的结果,确定由彗形像差校正装置执行的校正量,使得校正量对于光盘的整个圆周是恒定的,然后通过球面校正球面像差 像差校正装置。 因此,可以在确保倾斜余量的同时校正由于彗形像差校正装置而发生的球面像差,从而提高光盘装置的再现和记录的可靠性。 此外,根据本发明的光盘装置被配置为在激活装置期间发生热冲击倾斜的情况下,等待直到热冲击倾斜已经稳定。 因此,可以在避免热冲击倾斜的影响的同时进行激活,从而提高光盘装置的记录和再现操作的可靠性。