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    • 43. 发明授权
    • Information recording apparatus and information recording method
    • 信息记录装置和信息记录方法
    • US07336589B2
    • 2008-02-26
    • US10827518
    • 2004-04-20
    • Masahiro KatoTatsuhiro Yone
    • Masahiro KatoTatsuhiro Yone
    • G11B7/00
    • G11B7/126G11B7/00456G11B7/0062
    • An information recording apparatus irradiates a recording light, such as a laser light, on a recording medium, such as various kinds of optical discs, and records information. A recording pulse signal is generated based on a recording signal corresponding to the information to be recorded. The recording pulse signal is also called “strategy signal”, and the signal includes driving pulses which drive a light source for forming a recording mark on the recording medium. As to the recording light such as the laser light, the high frequency signal is superimposed for decreasing occurrence of noise due to mode hopping. The high frequency signal is generated as a digital signal, and the signal is added to the recording pulse signal to generate a driving pulse signal. Then, the light source is driven and the recording light is emitted. By generating the high frequency signal as the digital signal, it is possible to control a frequency and a phase thereof with high accuracy.
    • 信息记录装置将诸如激光的记录光照射在诸如各种光盘的记录介质上并记录信息。 基于与要记录的信息相对应的记录信号来生成记录脉冲信号。 记录脉冲信号也称为“策略信号”,该信号包括在记录介质上驱动用于形成记录标记的光源的驱动脉冲。 对于诸如激光的记录光,叠加高频信号以减少由于跳频引起的噪声的发生。 产生高频信号作为数字信号,并将该信号加到记录脉冲信号上以产生驱动脉冲信号。 然后,驱动光源并发射记录光。 通过产生作为数字信号的高频信号,可以高精度地控制频率和相位。
    • 44. 发明申请
    • Information recording apparatus and information recording method
    • 信息记录装置和信息记录方法
    • US20050030871A1
    • 2005-02-10
    • US10827518
    • 2004-04-20
    • Masahiro KatoTatsuhiro Yone
    • Masahiro KatoTatsuhiro Yone
    • G11B7/0045G11B7/00G11B7/006G11B7/125
    • G11B7/126G11B7/00456G11B7/0062
    • An information recording apparatus irradiates a recording light, such as a laser light, on a recording medium, such as various kinds of optical discs, and records information. A recording pulse signal is generated based on a recording signal corresponding to the information to be recorded. The recording pulse signal is also called “strategy signal”, and the signal includes driving pulses which drive a light source for forming a recording mark on the recording medium. As to the recording light such as the laser light, the high frequency signal is superimposed for decreasing occurrence of noise due to mode hopping. The high frequency signal is generated as a digital signal, and the signal is added to the recording pulse signal to generate a driving pulse signal. Then, the light source is driven and the recording light is emitted. By generating the high frequency signal as the digital signal, it is possible to control a frequency and a phase thereof with high accuracy.
    • 信息记录装置将诸如激光的记录光照射在诸如各种光盘的记录介质上并记录信息。 基于与要记录的信息相对应的记录信号来生成记录脉冲信号。 记录脉冲信号也称为“策略信号”,该信号包括在记录介质上驱动用于形成记录标记的光源的驱动脉冲。 对于诸如激光的记录光,叠加高频信号以减少由于跳频引起的噪声的发生。 产生高频信号作为数字信号,并将该信号加到记录脉冲信号上以产生驱动脉冲信号。 然后,驱动光源并发射记录光。 通过产生作为数字信号的高频信号,可以高精度地控制频率和相位。
    • 49. 发明授权
    • Method and apparatus for correcting tilt of light beam to optical recording medium
    • 用于校正光束到光学记录介质的倾斜的方法和装置
    • US07187636B2
    • 2007-03-06
    • US10651454
    • 2003-08-29
    • Masahiro KatoTatsuhiro YoneShigeru YoshidaKanji Ishihara
    • Masahiro KatoTatsuhiro YoneShigeru YoshidaKanji Ishihara
    • G11B20/20
    • G11B7/0956G11B7/0053
    • A tilt of a light beam to be radiated onto an information recording disk is corrected without using a dedicated tilt sensor. The correction is performed based on the characteristic that an offset amount between a tilt amount maximizing an RF signal amplitude and a further tilt amount maximizing an LPP signal amplitude is constant and independent of positions on the same disk. A pre-pit signal indicative of an existence/nonexistence of a pre-pit formed on the disk is produced from returned light of the light beam, while an RF signal is produced from bits of information recorded on the disk on the basis of the returned light. An optimum tilt-correcting amount is decided by making use of a relationship between the pre-pit signal and the RF signal at a particular tilt amount. The tilt amount is corrected using the optimum tilt-correcting amount.
    • 在不使用专用倾斜传感器的情况下校正要辐射到信息记录盘上的光束的倾斜。 基于将RF信号幅度最大化的倾斜量与使LPP信号振幅最大化的另一倾斜量之间的偏移量恒定并且与同一盘上的位置无关的特性进行校正。 由光束的返回光产生表示形成在盘上的预制凹坑的存在/不存在的预凹坑信号,同时根据返回的光盘从记录在盘上的信息的位产生RF信号 光。 通过利用预定凹坑信号和RF信号之间的关系以特定倾斜量来确定最佳倾斜校正量。 使用最佳倾斜校正量校正倾斜量。