公开(公告)号：US5627811A

公开(公告)日：1997-05-06

申请号：US488658

申请日：1995-06-08

申请人： Tsutomu Morita ,  Hiroyuki Onda ,  Masasi Tanaka ,  Katsumi Aoyama

发明人： Tsutomu Morita ,  Hiroyuki Onda ,  Masasi Tanaka ,  Katsumi Aoyama

IPC分类号： G11B19/28 ,  G11B7/085 ,  G11B19/20 ,  G11B19/247 ,  G11B19/26 ,  G11B7/00

CPC分类号： G11B7/08505 ,  G11B19/2009 ,  G11B19/247 ,  G11B19/26

摘要： An optical disk apparatus includes a disk servo unit which generates a servo signal based on a data signal read from an optical disk. The servo signal is supplied to a disk motor to control a rotation of the motor so that a linear velocity of the disk is kept constant when data is read from or written onto the disk. The disk servo unit is connected to the motor when the data is read from or written onto the disk, so that the servo signal is supplied to the motor, and the disk servo unit is disconnected from the motor when a pickup jumps from a present track of the disk to a destination track thereof so that the supply of the servo signal to the motor is inhibited. A velocity change signal which enables the motor to increase or decrease a rotating speed of the motor is generated depending on which one of two directions of the track jump is specified by a direction signal. A time signal which defines an estimated time of the track jump required to change an angular velocity at the present track to an angular velocity at the destination track is generated. The optical disk apparatus supplies the velocity change signal to the motor during the estimated time.

摘要翻译： 光盘装置包括：盘伺服单元，其基于从光盘读取的数据信号产生伺服信号。 伺服信号被提供给盘马达，以控制马达的旋转，使得当数据从盘读取或写入盘时，盘的线速度保持恒定。 当数据从盘读取或写入盘时，盘伺服单元连接到电动机，使得伺服信号被提供给电动机，并且当拾取器从当前轨迹跳跃时，盘伺服单元与电动机断开连接 的磁盘到目标磁道，从而禁止向电机提供伺服信号。 根据通过方向信号指定轨道跳跃的两个方向中的哪一个，使得电动机能够增大或减小电动机的转速的速度变化信号。 产生定义将目前轨道处的角速度改变为目的地轨道的角速度所需的轨道跳跃的估计时间的时间信号。 光盘装置在估计时间期间向马达提供速度改变信号。

公开(公告)号：US5684775A

公开(公告)日：1997-11-04

申请号：US574119

申请日：1995-12-18

申请人： Masasi Tanaka ,  Susumu Niinuma ,  Yo Kamei

发明人： Masasi Tanaka ,  Susumu Niinuma ,  Yo Kamei

IPC分类号： G11B33/02 ,  G11B33/12 ,  G11B33/14

CPC分类号： G11B33/121 ,  G11B33/1493

摘要： A disk apparatus includes a metallic chassis unit including a portion being grounded. A movable unit is provided to be movable relative to the chassis unit between an inserted position and a pulled-out position, the movable unit including an optical disk and electric parts for reproducing a signal indicative of information from the optical disk, the movable unit being included in the chassis unit when the movable unit is moved to the inserted position, and being pulled out from the chassis unit when the movable unit is moved to the pulled-out position. A conductive member is provided in the movable unit to protect the electric parts against a discharging of static electricity, the conductive member being electrically connected to the chassis unit when the movable unit is at the inserted position, the electric connection allowing a flow of a discharging current between an operator and the grounded portion of the chassis unit, and the conductive member being separated from the chassis unit when the movable unit is at the pulled-out position.

摘要翻译： 盘装置包括金属底盘单元，其包括接地的部分。 可移动单元设置成在插入位置和拉出位置之间相对于底盘单元可移动，可移动单元包括光盘和用于再现表示来自光盘的信息的信号的电气部件，可移动单元为 当可移动单元移动到插入位置时，包括在底盘单元中，并且当可移动单元移动到拉出位置时从底盘单元拉出。 导电构件设置在可移动单元中以保护电气部件免受静电放电，当可移动单元处于插入位置时，导电构件电连接到底盘单元，电连接允许放电 操作者和底盘单元的接地部分之间的电流，并且当可移动单元处于拉出位置时，导电构件与底盘单元分离。