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    • 39. 发明申请
    • OPTICAL INFORMATION APPARATUS AND GAP CONTROL METHOD THEREOF
    • 光信息设备及其控制方法
    • US20140003222A1
    • 2014-01-02
    • US14005386
    • 2012-03-16
    • Ryutaro FutakuchiShigeru Furumiya
    • Ryutaro FutakuchiShigeru Furumiya
    • G11B7/1263
    • G11B7/1263G11B7/0908G11B7/1374G11B7/1387G11B7/139G11B2007/13727
    • An optical disk apparatus has: a laser (14) that outputs light; an optical system that includes an SIL (2) for forming a predetermined sized beam spot on an optical disk (1) using the light from the laser; a detector (26) that detects output power of the laser and generates a laser power detection signal; a laser power control circuit (27) that controls the output power of the laser using the laser power detection signal; a detector (10) that detects a gap length between the optical disk and the SIL and generates a gap detection signal; and a gap control circuit (15) that controls the gap length between the optical disk and the SIL using the gap detection signal. The power control circuit has a gain crossover frequency greater than a gain crossover frequency of the gap control circuit.
    • 光盘装置具有:输出光的激光器(14); 光学系统,其包括用于使用来自激光器的光在光盘(1)上形成预定尺寸的光束点的SIL(2) 检测器(26),其检测激光器的输出功率并产生激光功率检测信号; 激光功率控制电路(27),其使用所述激光功率检测信号来控制所述激光器的输出功率; 检测器(10),其检测光盘和SIL之间的间隙长度,并产生间隙检测信号; 以及间隙控制电路(15),其使用间隙检测信号来控制光盘和SIL之间的间隙长度。 功率控制电路具有大于间隙控制电路的增益交叉频率的增益交叉频率。
    • 40. 发明授权
    • Optical disk recording device, method for recording data on optical disk, and optical disk
    • 光盘记录装置,在光盘上记录数据的方法和光盘
    • US08064308B2
    • 2011-11-22
    • US11887222
    • 2006-03-27
    • Shigeru Furumiya
    • Shigeru Furumiya
    • G11B7/00
    • G11B7/00456G11B7/00736G11B2007/0013
    • According to a method of the present invention for recording data on an optical disk, a recording pulse corresponding to a long mark includes a combination of a leading pulse and a subsequent intermediate pulse. Further, a level of the leading pulse indicates a first recording power, and a level of the intermediate pulse indicates a second recording power. When an optical disk includes a plurality of recording layers, a ratio of the second recording power to the first recording power is determined for each recording layer. When the recording speed is variable, the ratio of the second recording power to the first recording power is determined for each recording speed.
    • 根据本发明的用于在光盘上记录数据的方法,对应于长标记的记录脉冲包括前导脉冲和后续中间脉冲的组合。 此外,前导脉冲的电平表示第一记录功率,中间脉冲的电平表示第二记录功率。 当光盘包括多个记录层时,为每个记录层确定第二记录功率与第一记录功率的比率。 当记录速度可变时,针对每个记录速度确定第二记录功率与第一记录功率的比率。