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1. 发明授权

US5255253A Apparatus and method for controlling the velocity of a disk storage head 失效
标题翻译：用于控制盘存储头的速度的装置和方法
公开(公告)号：US5255253A
公开(公告)日：1993-10-19
申请号：US772725
申请日：1991-10-07
申请人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
发明人： Naoyuki Kagami , Hiroaki Kubo , Keiichi Okada , Makoto Takekoshi
IPC分类号： G11B7/085 , G11B21/08 , G11B7/00
CPC分类号： G11B7/08517 , G11B21/083 , G11B7/08535
摘要： In this invention, a driving circuit for moving a head in the radial direction on the recording surface of a disk is coupled to a velocity detecting circuit for detecting the velocity at which the head moves. A velocity profile is provided for storing information on the target velocity of the head. A driving signal generating circuit is coupled to the velocity profile and the velocity detecting circuit for comparing a signal from the velocity detecting circuit with a signal from the velocity profile. The driving signal generating circuit outputs a driving signal to the driving circuit based on the result of the comparison. A controller is coupled to the driving circuit for measuring a time required for moving the head a predetermined distance at a predetermined reference value, and modifying the driving signal based on the result of the comparison. Scatter in feedback quantities or fluctuation in the driving signal during velocity control is thereby corrected.

2. 发明授权

US5402402A Apparatus for controlling a optical disk drive 失效
标题翻译：用于控制光盘驱动器的装置
公开(公告)号：US5402402A
公开(公告)日：1995-03-28
申请号：US26238
申请日：1993-03-01
申请人： Naoyuki Kagami , Hiroaki Kubo , Makoto Takekoshi
发明人： Naoyuki Kagami , Hiroaki Kubo , Makoto Takekoshi
IPC分类号： G11B21/10 , G11B7/085 , G11B7/09 , G11B7/00
CPC分类号： G11B7/08517 , G11B7/08529 , G11B7/0946
摘要： An optical disk drive apparatus operable under track following mode and seek mode wherein, upon the detection of a track following operation error, a seek operation is initiated for seeking a new target track at a predetermined number of tracks distant from the current track. The seek operation is controlled to follow a velocity profile thus regaining control over an optical head that may have been jolted into an out of control velocity when the track following error occurred. The velocity profile provides for a reduced velocity as the target track is approached. The new target track is selected at a relatively large number of tracks distant from the current track if the head velocity is high and at a relatively small number of current tracks if the head velocity is low. If the current track is sensed to be an outer track, the new target track is selected toward the inner track and if the current track is sensed to be an inner track, the new target track is selected to be an outer track.
摘要翻译：一种光盘驱动装置，其在跟踪跟踪模式和追踪模式下可操作，其中，在检测到跟踪操作错误时，开始寻找操作，以在远离当前轨迹的预定数量的轨道上寻找新的目标轨迹。搜索操作被控制以跟随速度分布，从而重新获得当光轨跟随误差发生时可能已经颠簸到失控速度的光学头的控制。当目标轨迹接近时，速度分布提供了一个减小的速度。如果头部速度较高，并且如果头部速度较低，则在相对较少数量的当前轨道上，在距离当前轨迹的相对较多数量的轨道上选择新的目标轨迹。如果当前轨道被感测为外部轨道，则向内轨道选择新的目标轨道，并且如果当前轨道被感测为内部轨道，则将新的目标轨道选择为外部轨道。

3. 发明授权

US5459309A Focus acquiring method and optical disk drive 失效
标题翻译：聚焦获取方法和光盘驱动器
公开(公告)号：US5459309A
公开(公告)日：1995-10-17
申请号：US138028
申请日：1993-10-19
申请人： Naoyuki Kagami , Makoto Takekoshi
发明人： Naoyuki Kagami , Makoto Takekoshi
IPC分类号： G11B7/085 , G11B7/09 , G11B7/00
CPC分类号： G11B7/0945 , G11B7/0908
摘要： The present invention ensures successful focus acquisition in an optical disk drive independent of a travelling speed of an objective lens at the time when a focus servo circuit loop is closed. The present invention provides sending a signal to a focus actuator for bringing an objective lens close to an in-focus position while a focus servo circuit loop is opened; closing the loop by shutting off the signal sent to the focus actuator; adding an offset of a predetermined level to the focus error signal; detecting that the focus error signal to which the offset is added reaches a predetermined level; and closing the loop when it is detected that the predetermined level is reached, and gradually decreasing the value of the offset to be added to the focus error signal.
摘要翻译：本发明确保在聚焦伺服电路回路关闭时独立于物镜的移动速度的光盘驱动器中的成功的聚焦获取。本发明在聚焦伺服电路回路打开的同时，向聚焦致动器发送信号，使物镜接近对焦位置; 通过关闭发送到聚焦致动器的信号来闭合回路; 向所述聚焦误差信号添加预定电平的偏移; 检测添加了偏移的聚焦误差信号达到预定水平; 并且当检测到达到预定电平时闭合环路，并逐渐减小要添加到聚焦误差信号的偏移值。

4. 发明授权

US4834565A Driving mechanism for a printer head 失效
标题翻译：打印头的驱动机构
公开(公告)号：US4834565A
公开(公告)日：1989-05-30
申请号：US919755
申请日：1988-10-16
申请人： Makoto Takekoshi , Masahisa Inagaki , Haruhiko Tokunaga
发明人： Makoto Takekoshi , Masahisa Inagaki , Haruhiko Tokunaga
IPC分类号： B41J25/00
CPC分类号： B41J25/006
摘要： A printer head is connected to its counterbalance by a counter drive in a manner to reduce shock and noise when the printer head is reciprocated by a linear motor. The counter drive comprises a pulley and a pair of belts or wires which are wound approximately half way around the pulley in respective opposite directions on opposite sides of the pulley, with one end of each belt being connected to the counterbalance, and the other end of each belt being connected to the printer head. Thus, the counterbalance moves in the opposite direction of the printer head. A movable element of the linear motor is connected coaxially to the counterbalance, in a manner such that the weight of the movable element is included in the total weight of the counterbalance. The printer head is mounted on a carriage which the carriage has a roller spaced laterally from the shaft. slides along a shaft. The roller rolls along a rail extending in parallelism to the shaft and a spring is connected between the axis of the roller and the rail to urge the roller toward the rail and prevent the roller from releasing from the rail. The energy necessary to reverse the motion of the printer head at each end of the mechanism is reduced by spring action.
摘要翻译：打印机头通过计数器驱动器连接到其平衡器，以便当打印头由线性电动机往复运动时，减小冲击和噪音。计数器驱动器包括一个皮带轮和一对皮带或线，它们在滑轮的相对侧上在相反的相反方向上绕皮带轮大约一半地缠绕，每个皮带的一端连接到平衡体，另一端每个皮带都连接到打印头。因此，平衡体在打印机头的相反方向上移动。线性马达的可移动元件以平衡的总重量包括在可移动元件的重量的方式与该平衡体同轴地连接。打印机头安装在滑架上，滑架具有与轴横向间隔开的辊。沿轴滑动。辊沿着平行于轴的轨道滚动，并且弹簧连接在辊的轴线和轨道之间，以将辊推向导轨并防止辊从轨道释放。通过弹簧作用减小了在机构的每个端部反转打印机头的运动所需的能量。

5. 发明授权

US5247498A Optical disk drive apparatus and a seek method spiral track 失效
标题翻译：光盘驱动装置和SEEK方法螺旋轨迹
公开(公告)号：US5247498A
公开(公告)日：1993-09-21
申请号：US714946
申请日：1991-06-13
申请人： Makoto Takekoshi , Lawrence D. Tipton
发明人： Makoto Takekoshi , Lawrence D. Tipton
IPC分类号： G11B21/08 , G11B7/085
CPC分类号： G11B7/0857 , G11B7/08505 , G11B7/08529
摘要： The invention calculates the number of track crossing signals to be counted until a target position is reached without an actual seek operation, thus making it possible to complete a seek operation in a short time and without the need of the additional seek operation disclosed in the related art. A memory means is provided for storing the relation between the number of tracks (Delta t) from a current position to a target position and an indicator of the movement of said optical head toward said target position. A control means is provided for calculating the number of track crossing signals to be counted during a seek operation based on said stored relation when the target position is given, and for generating a control signal causing said optical head to seek based on the number of the calculated track crossing signals.

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