公开(公告)号：US07940612B2

公开(公告)日：2011-05-10

申请号：US12430967

申请日：2009-04-28

申请人： Shigeki Yamazaki ,  Tomomi Okamoto ,  Kazuki Nakazawa

发明人： Shigeki Yamazaki ,  Tomomi Okamoto ,  Kazuki Nakazawa

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1378 ,  G11B2007/0013

摘要： The present invention provides an optical disc apparatus that reduces access time while suppressing the emanation of heat from a beam expander. A microcomputer manages the operation time and pause time of a stepping motor constructed to move the movable lens of the beam expander, and in accordance with the duration of an immediately previous pause, limits the number of successive stepping-motor driving actions following the pause time, below a maximum permissible count. When the pause duration is shorter than a threshold value or when the number of successive stepping-motor driving actions reaches the maximum permissible count, the microcomputer starts next driving of the stepping motor after a required waiting time.

摘要翻译： 本发明提供了一种在抑制从扩束器发出热量的同时减少访问时间的光盘装置。 微型计算机管理构造成移动光束扩展器的可移动透镜的步进电机的操作时间和暂停时间，并且根据紧接在前的暂停的持续时间，限制在暂停时间之后的连续的步进电机驱动动作的次数 ，低于允许的最大计数。 当暂停时间短于阈值时，或者当连续的步进电动机驱动动作的数量达到最大允许计数时，微型电脑在所需的等待时间之后开始步进电动机的下一次驱动。

公开(公告)号：US20090316540A1

公开(公告)日：2009-12-24

申请号：US12430967

申请日：2009-04-28

申请人： Shigeki Yamazaki ,  Tomomi Okamoto ,  Kazuki Nakazawa

发明人： Shigeki Yamazaki ,  Tomomi Okamoto ,  Kazuki Nakazawa

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1378 ,  G11B2007/0013

摘要： The present invention provides an optical disc apparatus that reduces access time while suppressing the emanation of heat from a beam expander. A microcomputer manages the operation time and pause time of a stepping motor constructed to move the movable lens of the beam expander, and in accordance with the duration of an immediately previous pause, limits the number of successive stepping-motor driving actions following the pause time, below a maximum permissible count. When the pause duration is shorter than a threshold value or when the number of successive stepping-motor driving actions reaches the maximum permissible count, the microcomputer starts next driving of the stepping motor after a required waiting time.

摘要翻译： 本发明提供了一种在抑制从扩束器发出热量的同时减少访问时间的光盘装置。 微型计算机管理构造成移动光束扩展器的可移动透镜的步进电机的操作时间和暂停时间，并且根据紧接在前的暂停的持续时间，限制在暂停时间之后的连续的步进电机驱动动作的次数 ，低于允许的最大计数。 当暂停时间短于阈值时，或者当连续的步进电动机驱动动作的数量达到最大允许计数时，微型电脑在所需的等待时间之后开始步进电动机的下一次驱动。