公开(公告)号：EP1017044A1

公开(公告)日：2000-07-05

申请号：EP98830796.3

申请日：1998-12-29

Applicant: STMicroelectronics S.r.l.

Inventor： Caponetto, Riccarco ,  Di Guardo, Mario ,  Lo Presti, Matteo ,  Fortuna, Luigi ,  Muscato, Giovanni

IPC: G11B7/09

CPC classification number: G11B7/0946 ,  G11B7/0908 ,  G11B7/0916

Abstract: A control device for a focus system of a compact disk (CD) driver (1), using fuzzy logic, of the type which is incorporated to an audio data processing system (2) of the CD driver and adapted to detect and segregate a light beam reflected by the surface of the compact disk (CD) from an incident light beam to the surface.
The control device comprises, according to this invention, a controller (CF) operated on fuzzy logic for determining a focus error signal [Focus Error] and driving a focus servo-system (3) of the CD driver to adjust the distance of the focal plane from the light beam detecting means.

Abstract translation: 一种用于使用模糊逻辑的光盘（CD）驱动器（1）的聚焦系统的控制装置，其类型被结合到CD驱动器的音频数据处理系统（2）中并且适于检测和分离光 光束由光盘（CD）的表面从入射光束反射到表面。 根据本发明，控制装置包括在模糊逻辑上操作的控制器（CF），用于确定聚焦误差信号ÄFocusError，并驱动CD驱动器的聚焦伺服系统（3），以调整焦平面的距离 光束检测装置。