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    • 57. 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。
    • 60. 发明申请
    • RECORDING POWER DETERMINATION METHOD AND DEVICE
    • 记录功率测定方法和装置
    • US20100067337A1
    • 2010-03-18
    • US12623681
    • 2009-11-23
    • Mamoru ShojiYasumori HinoTakahiro SatoYuu Okada
    • Mamoru ShojiYasumori HinoTakahiro SatoYuu Okada
    • G11B20/10
    • G11B7/1267G11B7/00456G11B7/0062
    • A recording power determination method for determining a recording power of an optical beam for recording data on an information storage medium includes the steps of recording test data on the information storage medium at a plurality of test recording powers; reading the test data recorded at each test recording power, generating a signal, and measuring a modulation factor of the signal corresponding to each test recording power; calculating a product of an n'th power of each test recording power and the corresponding modulation factor, thereby obtaining a plurality of products corresponding to the plurality of test recording powers, where n is a value of exponent and is a real number other than 1; calculating a first recording power based on the correlation between the plurality of test recording powers and the plurality of products; and calculating the recording power based on the first recording power.
    • 用于确定用于在信息存储介质上记录数据的光束的记录功率的记录功率确定方法包括以多个测试记录功率将测试数据记录在信息存储介质上的步骤; 读取在每个测试记录功率下记录的测试数据,产生信号,并测量与每个测试记录功率对应的信号的调制因子; 计算每个测试记录功率的第n次功率的乘积和相应的调制因子,由此获得与多个测试记录功率对应的多个产品,其中n是指数值,并且是除1之外的实数 ; 基于所述多个测试记录功率与所述多个产品之间的相关性来计算第一记录功率; 以及基于第一记录功率计算记录功率。