-
公开(公告)号：EP1542216A3
公开(公告)日：2006-12-20
申请号：EP04029174.2
申请日：2004-12-09
发明人： Yamasaki, Fumitomo , Wada, Takuya , Aikoh, Hideki
CPC分类号： G11B21/02 , G11B7/08 , G11B7/12 , G11B2007/0006
摘要： In an optical head for performing the reproduction or recording of information for two or more types of different optical disks, the damage caused to an optical disk or an obj ective lens by collision between the optical disk and the objective lens is avoided. An optical heads device for reproducing or recording two or more types of information recording mediums different from each other comprises a first optical system, a second optical system, and a control unit for avoiding the collision between an optical disk and a second objective lens when a first optical system is in operation.
-
公开(公告)号：EP1346347B1
公开(公告)日：2005-03-30
申请号：EP01988030.1
申请日：2001-12-15
摘要： According to a first aspect the present invention is related to a head drum arrangement allowing a much easier mounting of the rotary transformer. The head drum arrangement comprises a non-rotating lower drum and a rotating upper drum, which are connected by a shaft fixed in the lower drum. The upper drum is mounted on the shaft by a bearing and preferably by two ball bearings. A rotary transformer is arranged between the lower drum and the upper drum having a fixed stator and a rotor rotating jointly with the upper drum. The rotor is non-positively held in its position by the magnetic force of a permanent magnet accommodated in the upper drum.
-
3.发明公开Head drum with magnetic mounting of rotary transformer 审中-公开Kopftrommelanordnung mit magnetischer Befestigung des rotierendesÜbertragers
公开(公告)号：EP1220206A1
公开(公告)日：2002-07-03
申请号：EP00403678.6
申请日：2000-12-27
摘要： According to a first aspect the present invention is related to a head drum arrangement allowing a much easier mounting of the rotary transformer. The head drum arrangement comprises a non-rotating lower drum and a rotating upper drum, which are connected by a shaft fixed in the lower drum. The upper drum is mounted on the shaft by a bearing and preferably by two ball bearings. A rotary transformer is arranged between the lower drum and the upper drum having a fixed stator and a rotor rotating jointly with the upper drum. The rotor is non-positively held in its position by the magnetic force of a permanent magnet accommodated in the upper drum.
摘要翻译： 根据第一方面，本发明涉及允许更容易地安装旋转变压器的磁头鼓装置。 头鼓装置包括非旋转下鼓和旋转的上滚筒，其通过固定在下滚筒中的轴连接。 上滚筒由轴承安装在轴上，最好由两个滚珠轴承安装。 在下滚筒和上滚筒之间设置有一个旋转变压器，它具有固定定子和与上滚筒共同旋转的转子。 通过容纳在上鼓中的永磁体的磁力将转子非积极地保持在其位置。
-
4.发明公开Voice coil motor control circuit and method 审中-公开Steuerschaltung und Steuerungsverfahrenfüreinen Schwingspulenmotor
公开(公告)号：EP0989548A3
公开(公告)日：2002-02-06
申请号：EP99307122.4
申请日：1999-09-08
CPC分类号： G11B21/12 , G11B21/02 , H02P25/034
摘要： An embodiment of the present application includes a method for driving a voice coil motor in response to signals from a feedback network that senses voice coil motor velocity. The method includes steps of providing a drive signal to an H-bridge for a first interval. At the end of the first interval, the H-bridge is placed in a high impedance state. Following a pause for a second interval during which transient voltages extinguish, a sample and hold circuit is coupled to the voice coil motor. The sample and hold circuit measures a voltage from the voice coil motor that is directly proportional to voice coil motor velocity and thus is directly related to head velocity. After the sample and hold circuit measures the voice coil motor voltage, the input to the sample and hold circuit is disabled. An output signal from the sample and hold circuit is coupled to the feedback network and thus to the H-bridge. As a result, voice coil motor and head velocity is more accurately controlled, reducing probability of collision between heads and discs in a disc drive and thereby increasing reliability of the disc drive.
摘要翻译： 本发明的实施例包括响应于来自感测音圈电机速度的反馈网络的信号来驱动音圈电机的方法。 该方法包括以下步骤：向第一间隔的H桥提供驱动信号。 在第一个间隔结束时，H桥被置于高阻抗状态。 在瞬态电压熄灭的第二间隔暂停之后，采样和保持电路耦合到音圈电机。 采样和保持电路测量来自音圈电机的与音圈电机速度成正比的电压，因此与磁头速度直接相关。 采样保持电路测量音圈电机电压后，采样保持电路的输入被禁止。 来自采样和保持电路的输出信号耦合到反馈网络，从而耦合到H桥。 结果，音圈电机和磁头速度被更精确地控制，减少磁盘驱动器中磁头和磁盘之间的碰撞的可能性，从而提高磁盘驱动器的可靠性。
-
5.发明授权Apparatus for combining linear and rotational motion of an azimuth read/write head 失效装置方位磁头的直线和旋转运动的叠加
公开(公告)号：EP0823702B1
公开(公告)日：2001-11-07
申请号：EP97305958.7
申请日：1997-08-05
申请人： QUANTUM CORPORATION
CPC分类号： G11B21/02 , G11B5/4893 , G11B5/5504 , G11B5/5513 , G11B5/56 , G11B21/00
-
6.发明公开Remote-operated integrated microactuator, in particular for a read/write transducer of hard discs 失效远程可控集成微驱动器，特别是用于读/Schreibköpf硬盘系统
公开(公告)号：EP0977349A1
公开(公告)日：2000-02-02
申请号：EP98830464.8
申请日：1998-07-30
摘要： The microactuator (30) comprises a motor element (32) including a stator (38) and a rotor (40) capacitively coupled to the stator (38); an actuator element (34) having a circular structure; and a transmission structure (36) interposed between the motor element (32) and the actuator element (34) to transmit a rotary movement of the motor element (32) into a corresponding rotary movement of the actuator element (34). In particular, the transmission structure (36) comprises a pair of transmission arms (80, 81) identical to each other, arranged symmetrically with respect to a symmetry axis (A) of the microactuator (30). The transmission arms (80, 81) extend between two approximately diametrically opposed regions of the rotor (40) to diametrically opposed regions (84) of the actuator element (34).
摘要翻译： 微致动器（30）包括电容性耦合到所述定子（38）的电动机元件（32）包括定子（38）和转子（40）; 具有圆形结构的致动器元件（34）的; 和电动机元件（32）和致动器元件（34）之间的传输结构（36），以传递电机元件（32）的旋转运动转换成所述致动器元件（34）的相应的旋转运动。 特别地，传输结构（36）包括一对传输臂（80，81）相同的海誓山盟，相对于微致动器的对称轴（A）（30）对称地布置的。 传输臂（80,81）两个径向相对的致动器元件（34）的转子（40），以径向相对的区域（84）的大约区域之间延伸。
-
7.发明公开
公开(公告)号：EP0975085A1
公开(公告)日：2000-01-26
申请号：EP98830446.5
申请日：1998-07-22
发明人： Murari, Bruno , Vigna, Benedetto , Ferrari, Paolo
摘要： An electrostatic transport structure (25) is formed by a plurality of concentric conductive regions (26a, 26b, 26c) to which biasing pulse trains (V1, V2, V3) are supplied. Each biased conductive region generates an electric field attracting any dielectric particles. The pulse trains supplied to immediately adjacent conductive regions are phase-shifted of a predetermined time and in a direction linked to the desired direction of movement for the electrostatic particles. Voltage pulses are sent to each conductive region delayed with respect to voltage pulses sent to an immediately preceding conductive region in the direction of desired movement and advanced with respect the voltage pulses sent to an immediately successive conductive region.
摘要翻译： 静电传输结构（25）由导电同心区域（26A，26B，26C），以哪个偏压脉冲串（V1，V2，V3）的供给的多个形成。 电场的每个偏压导电区基因率吸引任何介电粒子。 脉冲序列提供至立即相邻的导电区域被相移的规定的时间和在链接到运动的用于静电粒子所需的方向的方向。 电压脉冲被发送到发送到立即preceding-导电区域中移动的方向和期望的高级相对于传送到在立即连续导电区域内的电压脉冲相对于电压脉冲延迟每个导电区域。
-
-
公开(公告)号：EP0704090B1
公开(公告)日：1998-12-23
申请号：EP93923312.8
申请日：1993-10-07
申请人： MAXTOR CORPORATION
发明人： MACPHERSON, Aaron
摘要： A passive non-contact magnetic latch (60) for latching read-write heads of a disk drive over a landing area of the disk is disclosed. The magnetic latch forms a magnetic circuit for capturing a latch tab (48) within an air gap (61). Magnetic flux lines traverse the latch tab in a direction substantially perpendicular to a direction of movement of the latch tab.
-
10.发明公开METAL-RESIN COMPOSITE PLATE, ROCKING ACTUATOR WITH COMPOSITE PLATE, AND METHOD FOR PRODUCTION THEREOF 失效金属/塑料复合板又回来了，浮动执行器订单及其制备方法
公开(公告)号：EP0759616A4
公开(公告)日：1998-02-04
申请号：EP96905048
申请日：1996-03-08
发明人： TANAKA KENJI , MOTOI KEN
CPC分类号： G11B21/16 , B29C65/00 , B29C65/64 , B29C66/43 , B29C66/474 , B29C66/71 , B29C66/742 , B29C66/964 , G11B5/4813 , G11B21/02 , Y10T29/49025 , Y10T29/4994 , Y10T29/49941 , Y10T29/49943 , B29K2067/00 , B29K2071/00 , B29K2081/04 , B29K2081/06
摘要： A metal-resin composite plate obtained by joining a metal sheet (1, 12) and a resin sheet (2, 13). An insert member (3, 17) having a through-hole is buried into the resin sheet. The insert member is in close contact with the resin of the resin sheet at its peripheral portions other than its surface at which the through-hole is open. The metal sheet includes a metallic coupling member (4, 16) fixed thereto, and the metal sheet and the resin sheet are united by the coupling member which is fitted into the through-hole. The insert member and the resin around the insert member involve stresses (F3, F4) due to their elastic deformation, so that sufficient force is generated for firm connections between the coupling member and the insert member and between the insert member and the resin sheet. The stress of the surrounding resin results from elastic deformation (V2-V3), smaller than the deformation (V2) produced in the insert member, which can generate the stress (F3) in the inner member.
-
-
-
-
-
-
-
-
-
搜索结果
172 条记录 (耗时 0.011 秒)
