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    • 35. 发明申请
    • Optical disk apparatus and optical disk evaluation method
    • 光盘装置和光盘评估方法
    • US20060098549A1
    • 2006-05-11
    • US11268775
    • 2005-11-08
    • Hidemitsu SenooKoji Hayashi
    • Hidemitsu SenooKoji Hayashi
    • G11B5/09
    • G11B7/004G11B7/1267
    • An optical disk apparatus irradiating a laser beam to an optical disk and receiving reflected light of the laser beam changed by marks recorded on the optical disk to perform evaluation of the optical disk based on a regeneration signal corresponding to an amount of light of the reflected light, the apparatus comprising a measurement circuit, based on a relationship that phases substantially match between a first timing of each of a rising edge and falling edge in a binarized signal of the regeneration signal and a second timing of a rising edge or falling edge in a synchronized clock signal conforming in phase to the binarized signal, measuring a phase difference between the first timing and a third timing of the synchronized clock signal shifted by a predetermined phase of the synchronized clock signal from the second timing as a reference.
    • 一种光盘装置,其将激光束照射到光盘并且接收由记录在光盘上的标记改变的激光束的反射光,以基于与反射光的光量相对应的再生信号来执行光盘的评估 所述装置包括测量电路,所述测量电路基于所述再生信号的二值化信号中的上升沿和下降沿中的每一个的第一定时与所述再生信号的上升沿或下降沿的第二定时之间的相位大致匹配的关系 同步时钟信号与二值化信号相位相符,测量从第二定时移位了同步时钟信号的预定相位的同步时钟信号的第一定时和第三定时之间的相位差作为参考。