Method and apparatus to generate tracking error signal, optical storage drive and lead-in control method

公开了一种在光存储驱动器中，即使对具有大约λ/4的凹坑深度或窄轨迹间距的光盘(CD)也稳定地产生跟踪误差信号的方法和装置、一种使用该方法和装置的光存储驱动器、和光存储驱动器的导入控制方法。所述产生跟踪误差信号的方法包括用光电探测器检测反射的激光束；和用差分相位检测(DPD)方法根据由光电探测器接收的光信号产生第一跟踪误差信号，并输出第一跟踪误差信号作为跟踪误差信号。 A method and apparatus to stably generate a tracking error signal even for a compact disc (CD) with a pit depth of about lambda /4 or a narrow track pitch in an optical storage drive, an optical storage drive using the same, and a lead-in control method of the optical storage drive. The method includes detecting reflected laser beams using a photo detector (32); and generating a first tracking error signal based on optical signals received by the photo detector (32), using a differential phase detection (DPD) method and outputting the first tracking error signal as the tracking error signal.