Magnetic disk apparatus and method

    公开(公告)号:US11978483B2

    公开(公告)日:2024-05-07

    申请号:US17931679

    申请日:2022-09-13

    Inventor: Wataru Tsukahara

    CPC classification number: G11B21/083

    Abstract: According to embodiments, a magnetic disk apparatus includes a magnetic disk, a magnetic head, a temperature sensor, and a controller. The magnetic disk has formed therein a servo sector in which servo data including a first post code and a second post code is recorded. In the positioning of the magnetic head, the controller performs a correction using a third post code that is based on the first and second post codes and a first temperature detected by the temperature sensor.

    Optical Disk Apparatus
    3.
    发明申请
    Optical Disk Apparatus 失效
    光盘装置

    公开(公告)号:US20080320507A1

    公开(公告)日:2008-12-25

    申请号:US12141952

    申请日:2008-06-19

    CPC classification number: G11B21/083 G11B7/08582 G11B19/2018

    Abstract: An optical disc apparatus capable of reducing looseness vibrations resulting from a gap between a sub-guide shaft and a bearing is provided. According to an optical disc apparatus in the present invention, both ends of the sub-guide shaft are supported by being sandwiched between a pair of support parts formed in a chassis and a pair of pressing members mounted on the chassis. The support part is formed by bending a protruding portion both protruding in an inward direction of a hole from an edge of the hole of the chassis and extending along the direction perpendicular to the sub-guide shaft.

    Abstract translation: 提供了能够减小由副导向轴和轴承之间的间隙引起的松动振动的光盘装置。 根据本发明的光盘装置,副导向轴的两端被夹在形成在底盘中的一对支撑部分和安装在底盘上的一对按压部件之间而被支撑。 所述支撑部通过使从所述底座的孔的边缘向孔内方向突出的突出部弯曲而形成,所述突出部沿着与所述副引导轴垂直的方向延伸。

    Operating device, position-switching device, and magneto-optical recording/reproducing apparatus
    4.
    发明授权
    Operating device, position-switching device, and magneto-optical recording/reproducing apparatus 有权
    操作装置,位置切换装置和磁光记录/重放装置

    公开(公告)号:US07414512B2

    公开(公告)日:2008-08-19

    申请号:US10569543

    申请日:2004-08-25

    CPC classification number: G11B11/10558 F03G7/065 G11B21/083 G11B21/12

    Abstract: An operating device has a pair of linear members (43, 44) made of a shape memory alloy and contracting axially due to heat generated by electrification and generating tension in the contracting direction, a drive lever (19) supported to pivot about a pivot shaft (19a), a pair of drive rods (33, 34) respectively connected to both sides of the drive lever (19) with the pivot shaft (19a) being disposed between the sides of the drive lever (19), and a power supply circuit for selectively electrifying the linear members (43, 44). One end of each of the linear members (43, 44) is fixed to a stationary member, and the other end is connected to each of the drive rods (33, 34).

    Abstract translation: 操作装置具有由形状记忆合金构成的一对线性构件(43,44),并由于由带电产生的热量和沿收缩方向产生张力而轴向收缩,驱动杆(19)被支撑成围绕枢轴 (19a),分别连接到所述驱动杆(19)的两侧的一对驱动杆(33,34),其中所述枢转轴(21a)设置在所述驱动杆(19)的侧面之间,并且 电源电路,用于选择性地使线性元件(43,44)带电。 每个线性构件(43,44)的一端固定到固定构件,另一端连接到每个驱动杆(33,34)。

    High bandwidth data transfer to and from rotating data storage devices
    5.
    发明授权
    High bandwidth data transfer to and from rotating data storage devices 有权
    旋转数据存储设备的高带宽数据传输

    公开(公告)号:US07230784B2

    公开(公告)日:2007-06-12

    申请号:US11003569

    申请日:2004-12-03

    Abstract: A method of transferring data of one or more rotatable data storage devices includes but is not limited to rotating the at least one rotatable data storage device; transferring the data between a plurality of stationary data transfer heads and the one or more rotatable data storage devices; and using one or more computer programs to determine which of the plurality of stationary data transfer heads are to be used to transfer a first portion of the data between the plurality of stationary data transfer heads and the one or more rotatable data storage devices and the direction in which the first portion of the data is to be transferred. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present application. Other methods and apparatuses are also disclosed.

    Abstract translation: 传送一个或多个可旋转数据存储装置的数据的方法包括但不限于旋转所述至少一个可旋转数据存储装置; 在多个固定数据传送头与一个或多个可旋转数据存储装置之间传送数据; 并且使用一个或多个计算机程序来确定多个固定数据传送头中的哪一个将用于在多个固定数据传送头与一个或多个可旋转数据存储装置之间传送数据的第一部分以及方向 其中数据的第一部分将被传送。 除了上述之外,在权利要求,附图和形成本申请的一部分的文本中描述了其它方法方面。 还公开了其它方法和装置。

    Laser positioning in an optical disc drive
    6.
    发明申请
    Laser positioning in an optical disc drive 审中-公开
    激光定位在光盘驱动器中

    公开(公告)号:US20070097819A1

    公开(公告)日:2007-05-03

    申请号:US11263445

    申请日:2005-10-31

    CPC classification number: G11B7/08582 B41J3/4071 G11B21/083 G11B23/40

    Abstract: Various apparatuses and methods for laser positioning in an optical disc drive are provided. In one embodiment, a laser positioning apparatus is provided in which a first positioning assembly positions a first laser beam generated by a first laser and directed toward a first side of an optical disc site in the optical disc drive. A second positioning assembly positions a second laser beam generated by a second laser and directed toward a second side of the optical disc site in the optical disc drive. The second positioning assembly positions the second laser beam independent of the positioning of first laser beam by the first positioning assembly, the second positioning assembly further comprising an actuator that positions the second laser beam, and an elastic member that opposes a movement of the actuator.

    Abstract translation: 提供了用于光盘驱动器中的激光定位的各种装置和方法。 在一个实施例中,提供了一种激光定位装置,其中第一定位组件将由第一激光器产生的第一激光束定位在光盘驱动器中的光盘位置的第一侧。 第二定位组件将由第二激光器产生的第二激光束定位在光盘驱动器中的光盘位置的第二侧。 第二定位组件通过第一定位组件定位第二激光束与第一激光束的定位无关,第二定位组件还包括定位第二激光束的致动器以及与致动器的运动相对的弹性部件。

    Information disk recording/reproducing device and method for controlling recording/reproducing speed thereof
    7.
    发明授权
    Information disk recording/reproducing device and method for controlling recording/reproducing speed thereof 失效
    信息盘记录/再现装置及其记录/再现速度控制方法

    公开(公告)号:US07196980B2

    公开(公告)日:2007-03-27

    申请号:US10505479

    申请日:2003-03-10

    Inventor: Yorio Takahashi

    CPC classification number: G11B19/28 G11B7/08541 G11B7/0946 G11B21/083

    Abstract: Information about the number of traversed tracks is acquired with a code at a first rotational speed and a second rotational speed in each area provided by dividing one rotation into m (m is a natural number equal to or larger than 1). As to the information about the number of traversed tracks, a difference is calculated between the areas. A value proportionate to the sum of absolute values of the information about the traversed tracks in the areas is used as a vibration detection value proportionate to vibration amplitude.

    Abstract translation: 通过将一个旋转分成m(m是等于或大于1的自然数)提供的每个区域中的第一旋转速度和第二旋转速度的代码获取关于所遍历轨道的数量的信息。 关于遍历轨迹数量的信息,在区域之间计算差。 作为与振动幅度成比例的振动检测值,使用与该区域中的横越轨迹的信息的绝对值之和成比例的值。

    Feed screw driver and information recorder/reproducer
    9.
    发明授权
    Feed screw driver and information recorder/reproducer 失效
    进给螺丝刀和信息记录器/再现器

    公开(公告)号:US07124419B2

    公开(公告)日:2006-10-17

    申请号:US10239329

    申请日:2002-01-16

    Abstract: The present invention relates to a feed screw driving apparatus that moves a power transmission member, which engages a feed screw, in an axial direction of the feed screw by rotationally driving the feed screw using a driving source, such as an electric motor, and also to an information recording and/or reproducing apparatus that moves a pick-up apparatus with this feed screw driving apparatus and records and/or reproduces an information signal onto or from a disc-like recording mediumIn a feed screw driving apparatus that moves a power transmission member, which engages a feed screw, in an axial direction of the feed screw by rotationally driving the feed screw using a driving source, there is provided an elastic member that energizes the power transmission member in the axial direction of the feed screw.The gap between the feed nut and the feed screw is eliminated, so that the feed screw can be driven at high speed without driving errors (play) being produced and the driving of a slide member can be controlled with high precision.

    Abstract translation: 本发明涉及一种进给丝杠驱动装置,其通过使用诸如电动机的驱动源旋转地驱动进给螺杆来使在进给螺杆的轴向方向上与进给螺杆啮合的动力传递部件移动,并且还 涉及使用该进给丝杠驱动装置移动拾取装置的信息记录和/或再现装置,并将信息信号记录和/或再现到盘状记录介质上或从盘状记录介质再现信息信号。在进给丝杠驱动装置中, 传动构件,其通过使用驱动源旋转地驱动进给螺杆而在进给螺杆的轴向方向上接合进给螺杆,设置有弹性构件,其在动力传递构件的轴向方向上对进给螺杆进行激励。 消除了进给螺母和进给螺杆之间的间隙,使得进给螺杆可以高速驱动,而不会产生驱动误差(游隙),并且可以高精度地控制滑动构件的驱动。

    System and method for jumping to a timepoint in a MPEG file

    公开(公告)号:US07106944B2

    公开(公告)日:2006-09-12

    申请号:US09893132

    申请日:2001-06-27

    Applicant: Hans Graan

    Inventor: Hans Graan

    Abstract: A system and method for performing seek or jump functions in a digitally stored audiovisual file are described. When the audiovisual file is recorded onto a storage medium, headers, which are distinct and separable from the audiovisual file datastream, are set in the audiovisual file in the storage medium. Each header contains a timestamp. When jumping/seeking, an estimated position for the desired timepoint on the storage medium is calculated by multiplying the storage unit per time unit rate by the desired timepoint. Then the system and method jumps to the estimated position, where the timestamp in the nearest header is checked to determine whether the time it indicates is close enough to the desired timepoint. If it is not, a new estimated position is calculated and the method repeats until either an iteration limit is reached or the estimated position is determined to be close enough to the desired timepoint.

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