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    • 2. 发明授权
    • Optical disc apparatus and data recording method thereof
    • 光盘装置及其数据记录方法
    • US07944790B2
    • 2011-05-17
    • US12073080
    • 2008-02-29
    • Yasuhiro WadaKoichi WatanabeToshio ShojiTakakiyo YasukawaNaohito Ikeda
    • Yasuhiro WadaKoichi WatanabeToshio ShojiTakakiyo YasukawaNaohito Ikeda
    • G11B11/00
    • G11B7/1267
    • In order to ensure recording quality while suppressing the adverse effects due to performance variations among apparatuses and disc radial positions on an optical disc, an optical disc apparatus according to the present invention performs, at the time of data recording, the steps of: acquiring a jitter value and β value from a reproduced signal based on laser light reflected from the optical disc in relation to a disc radial position; learning a β value when the acquired jitter value is a minimum as a target β value; and, if a jitter value acquired thereafter is larger than the minimum jitter value by a preset reference value or above, correcting recording power based on the magnitude relation and the difference between the β value associated with the acquired jitter value and the target β value or performing trial record processing.
    • 为了确保记录质量,同时抑制由于设备之间的性能变化和光盘上的盘径向位置的不利影响,根据本发明的光盘装置在数据记录时执行以下步骤:获取 抖动值和&bgr 来自基于从光盘反射的相对于盘径向位置的激光的再现信号的值; 学习和学习 当获取的抖动值作为目标&bgr为最小时的值; 值; 并且如果其后获得的抖动值大于最小抖动值预先设定的参考值以上,则基于大小关系和“bgr”之间的差异来校正记录功率。 与所获取的抖动值和目标值bgr相关联的值; 价值或执行试验记录处理。
    • 4. 发明申请
    • Optical disc apparatus and data recording method thereof
    • 光盘装置及其数据记录方法
    • US20080298194A1
    • 2008-12-04
    • US12073080
    • 2008-02-29
    • Yasuhiro WadaKoichi WatanabeToshio ShojiTakakiyo YasukawaNaohito Ikeda
    • Yasuhiro WadaKoichi WatanabeToshio ShojiTakakiyo YasukawaNaohito Ikeda
    • G11B7/095G11B27/36
    • G11B7/1267
    • In order to ensure recording quality while suppressing the adverse effects due to performance variations among apparatuses and disc radial positions on an optical disc, an optical disc apparatus according to the present invention performs, at the time of data recording, the steps of: acquiring a jitter value and β value from a reproduced signal based on laser light reflected from the optical disc in relation to a disc radial position; learning a β value when the acquired jitter value is a minimum as a target β value; and, if a jitter value acquired thereafter is larger than the minimum jitter value by a preset reference value or above, correcting recording power based on the magnitude relation and the difference between the β value associated with the acquired jitter value and the target β value or performing trial record processing.
    • 为了确保记录质量,同时抑制由于设备之间的性能变化和光盘上的盘径向位置的不利影响,根据本发明的光盘装置在数据记录时执行以下步骤:获取 基于从光盘相对于盘径向位置反射的激光的再现信号的抖动值和β值; 当所获取的抖动值作为目标β值为最小时,学习β值; 并且如果其后获得的抖动值大于最小抖动值预先设定的参考值或以上,则基于大小关系和与所获取的抖动值相关联的β值与目标β值之间的差来校正记录功率,或 进行试卷记录处理。
    • 10. 发明授权
    • Optical disk device and emission current adjusting method for the same
    • 光盘装置和发射电流调节方法相同
    • US07313077B2
    • 2007-12-25
    • US11033959
    • 2005-01-13
    • Eisuke IshibashiYasuhiro WadaShinya ShimizuToshiya Akagi
    • Eisuke IshibashiYasuhiro WadaShinya ShimizuToshiya Akagi
    • G11B7/00
    • G11B7/1263G11B7/00456
    • A ratio of an erase current and a peak current when starting recording is defined as K=iER/iPK (S1), and iER11 is set equal to K×iPK1, and an ideal value iER11 of an erase current that should be increased according to a temperature change is determined (S2). A value obtained by subtracting a current iBT at a bottom level emission intensity when starting recording from a current at an erase level emission intensity after the temperature rises is defined as iER1. By measuring this iER1, an ideal value iER11 of the erase current is subtracted from iER1, and the resultant current is defined as iBT11 (S3). This iBT11 is set as an adjustment value of the bottom current, and a value obtained by adding this adjustment value to a bottom current when starting recording is set as a bottom current after change.
    • 开始记录时的擦除电流和峰值电流的比率被定义为K = iER / iPK(S 1),并且将iER11设置为等于KxiPK 1,并且将擦除电流的理想值iER 11设置为相应于 确定温度变化(S 2)。 通过从温度升高后的擦除电平发射强度的电流开始记录时减去以下电平发射强度的电流iBT而获得的值被定义为iER 1。 通过测量这个iER 1,从iER 1中减去擦除电流的理想值iER 11,结果电流定义为iBT 11(S 3)。 将该iBT11设定为底部电流的调整值,将开始记录时将该调整值与底部电流相加得到的值设定为变更后的底部电流。