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    • 3. 发明授权
    • Laser pulse control circuit
    • 激光脉冲控制电路
    • US07512057B2
    • 2009-03-31
    • US10599742
    • 2005-04-01
    • Katsuya TanoueKenichi IkegamiNaoya Yamakawa
    • Katsuya TanoueKenichi IkegamiNaoya Yamakawa
    • G11B7/00
    • G11B7/126G11B7/0062G11B7/1263G11B7/1267
    • Disclosed is a laser pulse controlling circuit that, when the laser device is driven with laser pulses having the first and the second illumination levels, causes the first and the second illumination level setting units to set the first and the second illumination levels corresponding to a predetermined ratio of the first illumination level to the second illumination level, wherein the laser pulse controlling circuit, based on regularity that the relation between: a manipulated variable for causing the second illumination level setting unit to execute adjustment of the second illumination level; and the inverse of the ratio, with reference to the first illumination level, is a straight line that necessarily passes one point for a predetermined first illumination level, and that the slope of the straight line is proportional to an arbitrary first illumination level, calculates the manipulated variable that is correlated with the first illumination level corresponding to the optical disk, and with the inverse of the ratio, and causes the second illumination level setting unit to set the second illumination level corresponding to the calculated manipulated variable.
    • 公开了一种激光脉冲控制电路,其中,当激光装置用具有第一和第二照明电平的激光脉冲驱动时,第一和第二照明电平设定单元将第一和第二照明电平设置为与预定 所述激光脉冲控制电路基于以下关系的规律:所述激光脉冲控制电路与所述第二照明电平设定单元进行第二照明电平的调整的操作变量之间的关系; 并且相对于第一照明级别的比率的倒数是必须经过一点预定的第一照明级别的直线,并且直线的斜率与任意的第一照明级别成比例,计算出 与光盘对应的第一照明级别相关的操作变量,并且与比率的倒数相关,并且使第二照明级别设置单元设置与计算的操作变量相对应的第二照明级别。
    • 4. 发明申请
    • Laser Pulse Control Circuit
    • 激光脉冲控制电路
    • US20070274191A1
    • 2007-11-29
    • US10599742
    • 2005-04-01
    • Katsuya TanoueKenichi IkegamiNaoya Yamakawa
    • Katsuya TanoueKenichi IkegamiNaoya Yamakawa
    • G11B7/125
    • G11B7/126G11B7/0062G11B7/1263G11B7/1267
    • Disclosed is a laser pulse controlling circuit that, when the laser device is driven with laser pulses having the first and the second illumination levels, causes the first and the second illumination level setting units to set the first and the second illumination levels corresponding to a predetermined ratio of the first illumination level to the second illumination level, wherein the laser pulse controlling circuit, based on regularity that the relation between: a manipulated variable for causing the second illumination level setting unit to execute adjustment of the second illumination level; and the inverse of the ratio, with reference to the first illumination level, is a straight line that necessarily passes one point for a predetermined first illumination level, and that the slope of the straight line is proportional to an arbitrary first illumination level, calculates the manipulated variable that is correlated with the first illumination level corresponding to the optical disk, and with the inverse of the ratio, and causes the second illumination level setting unit to set the second illumination level corresponding to the calculated manipulated variable.
    • 公开了一种激光脉冲控制电路,其中,当激光装置用具有第一和第二照明电平的激光脉冲驱动时,第一和第二照明电平设定单元将第一和第二照明电平设置为与预定 所述激光脉冲控制电路基于以下关系的规律:所述激光脉冲控制电路与所述第二照明电平设定单元进行第二照明电平的调整的操作变量之间的关系; 并且相对于第一照明级别的比率的倒数是必须经过一点预定的第一照明级别的直线,并且直线的斜率与任意的第一照明级别成比例,计算出 与光盘对应的第一照明级别相关的操作变量,并且与比率的倒数相关,并且使第二照明级别设置单元设置与计算的操作变量相对应的第二照明级别。