Rotatable read/write optical head apparatus
    1.
    发明授权
    Rotatable read/write optical head apparatus 失效
    可旋转读/写光头设备

    公开(公告)号:US5195074A

    公开(公告)日:1993-03-16

    申请号:US740379

    申请日:1991-08-05

    IPC分类号: G11B7/085 G11B7/09 G11B7/12

    CPC分类号: G11B7/12 G11B7/08582 G11B7/09

    摘要: In an optical head apparatus for recording or reproducing information onto or from an optical disc, a carriage is movable along a guide shaft extending in a direction parallel with the radial direction of the optical disc, and an armature is mounted on the carriage so that it can rotate about a pivotal axis perpendicular to the surface of the optical disc. An objective lens is fixed to the armature and positioned to traverse the tracks on the optical disc when the armature rotates. Guide yokes extend in parallel with the guide shaft. Tracking and carriage-servo coils are fixed to the armature and have a hollow through which the guide yokes loosely extend. A magnetic field means creates magnetic lines of force perpendicular to the longitudinal direction of the guide yokes and parallel with the surface of the optical disc. A drive circuit supplies currents to the tracking and carriage-servo coils in such directions as to produce electromagnetic forces in parallel with each other thereby driving the armature along the guide yokes or in such directions as to produce electromagnetic forces in antiparallel with each other to rotate the armature about the pivotal axis.

    摘要翻译: 在用于在光盘上记录或再现信息的光学头装置中,滑架可沿着与光盘的径向平行的方向延伸的引导轴移动,并且电枢安装在滑架上,使得它 可围绕垂直于光盘表面的枢转轴旋转。 当电枢旋转时,物镜固定到电枢并定位成横过光盘上的轨道。 引导轭与引导轴平行延伸。 跟踪和托架伺服线圈固定在电枢上,并具有中空的引导线松动地延伸通过该中空。 磁场意味着产生垂直于引导轭的纵向方向的磁力线并与光盘的表面平行。 驱动电路将电流提供给跟踪和托架伺服线圈,以便产生彼此平行的电磁力,从而沿着引导轭驱动电枢,或沿着这样的方向驱动电枢,以产生彼此反平行的电磁力,以使其旋转 电枢围绕枢转轴线。

    Tracking adjustment using the sum of the maximum and minimum tracking
error signals or the mean value of the sum
    3.
    发明授权
    Tracking adjustment using the sum of the maximum and minimum tracking error signals or the mean value of the sum 失效
    使用最大和最小跟踪误差信号的总和或总和的平均值进行跟踪调整

    公开(公告)号:US5481526A

    公开(公告)日:1996-01-02

    申请号:US266719

    申请日:1994-06-28

    IPC分类号: G11B7/09 G11B7/00

    CPC分类号: G11B7/0941 G11B7/094

    摘要: An optical pickup emits a light beam onto a recording medium and outputs, in response to a reflection from the medium, a first and a second signal for controlling focusing servo control and tracking servo control, respectively. A signal generating section generates a focus error signal and a tracking error signal in response to the first and second signals, respectively. A driving section is responsive to the output of the signal generating section for outputting a first and a second drive current assigned to focusing and tracking, respectively. An actuator moves the pickup in a focusing direction and a tracking direction by the first and second drive currents, respectively. An adjusting section detects two values close to the maximum and minimum values of the tracking error signal at the start of the focusing servo control and adjusts the gain of the second signal on the basis of a difference between the detected values. Alternatively, the offset of the second signal may be adjusted by the sum of the two detected values. Futher, the offset of the first signal may be adjusted by a focus offset occurring when the amplitude of the first and second signals appearing after the start of the focusing servo control or the amplitude of a third signal also outputted by the pickup and representative of recorded data and appearing after the start of tracking servo is close to the maximum.

    摘要翻译: 光学拾取器将光束发射到记录介质上,并响应于来自介质的反射而分别输出用于控制聚焦伺服控制和跟踪伺服控制的第一和第二信号。 信号产生部分分别响应于第一和第二信号产生聚焦误差信号和跟踪误差信号。 驱动部分响应于信号产生部分的输出,分别输出分配给聚焦和跟踪的第一和第二驱动电流。 执行器分别通过第一驱动电流和第二驱动电流沿着聚焦方向和跟踪方向移动拾取器。 调整部分检测在聚焦伺服控制开始时接近跟踪误差信号的最大值和最小值的两个值,并且基于检测值之间的差调整第二信号的增益。 或者,可以通过两个检测值的和来调整第二信号的偏移。 此外,第一信号的偏移可以通过在聚焦伺服控制开始之后出现的第一和第二信号的幅度或由拾取器输出的第三信号的振幅的振幅发生的聚焦偏移来调节,并且代表记录 跟踪伺服开始后出现的数据接近最大值。

    Adjustment of tracking servo and focusing servo in optical data
recording/reproducing apparatus
    4.
    发明授权
    Adjustment of tracking servo and focusing servo in optical data recording/reproducing apparatus 失效
    在光学数据记录/再现装置中调整跟踪伺服和聚焦伺服

    公开(公告)号:US5351224A

    公开(公告)日:1994-09-27

    申请号:US112655

    申请日:1993-08-27

    IPC分类号: G11B7/09

    CPC分类号: G11B7/0941 G11B7/094

    摘要: An optical pickup emits a light beam onto a recording medium and outputs, in response to a reflection from the medium, a first and a second signal for controlling focusing servo control and tracking servo control, respectively. A signal generating section generates a focus error signal and a tracking error signal in response to the first and second signals, respectively. A driving section is responsive to the output of the signal generating section for outputting a first and a second drive current assigned to focusing and tracking, respectively. An actuator moves the pickup in a focusing direction and a tracking direction by the first and second drive currents, respectively. An adjusting section detects two values close to the maximum and minimum values of the tracking error signal at the start of the focusing servo control and adjusts the gain of the second signal on the basis of a difference between the detected values. Alternatively, the offset of the second signal may be adjusted by the sum of the two detected values. Further, the offset of the first signal may be adjusted by a focus offset occurring when the amplitude of the first and second signals appearing after the start of the focusing servo control or the amplitude of a third signal also outputted by the pickup and representative of recorded data and appearing after the start of tracking servo is close to the maximum.

    摘要翻译: 光学拾取器将光束发射到记录介质上,并响应于来自介质的反射而分别输出用于控制聚焦伺服控制和跟踪伺服控制的第一和第二信号。 信号生成部分分别响应于第一和第二信号产生聚焦误差信号和跟踪误差信号。 驱动部分响应于信号产生部分的输出,分别输出分配给聚焦和跟踪的第一和第二驱动电流。 执行器分别通过第一驱动电流和第二驱动电流沿着聚焦方向和跟踪方向移动拾取器。 调整部分检测在聚焦伺服控制开始时接近跟踪误差信号的最大值和最小值的两个值,并且基于检测值之间的差调整第二信号的增益。 或者,可以通过两个检测值的和来调整第二信号的偏移。 此外,可以通过在聚焦伺服控制开始之后出现的第一和第二信号的幅度或由拾取器输出的第三信号的幅度的时候发生的聚焦偏移来调整第一信号的偏移,并且代表记录 跟踪伺服开始后出现的数据接近最大值。

    Processing apparatus, system, method and program for processing information to be shared
    10.
    发明授权
    Processing apparatus, system, method and program for processing information to be shared 有权
    用于处理要共享的信息的处理装置,系统,方法和程序

    公开(公告)号:US09398233B2

    公开(公告)日:2016-07-19

    申请号:US13880267

    申请日:2012-07-10

    摘要: An information processing apparatus, an information processing system, and a method of processing information are provided. In one embodiment, the information processing apparatus includes a processor, and a memory device storing instructions. When executed by the processor, the instructions cause the processor to receive, from a first information processing apparatus, area specifying information and location information, the area specifying information specifying a display area in an image, the display area including a plurality of partial images, the location information indicating at least one location of the plurality of partial images. The instructions further cause the processor to transmit, to a second information processing apparatus, the area specifying information and the location information.

    摘要翻译: 提供信息处理装置,信息处理系统和处理信息的方法。 在一个实施例中,信息处理设备包括处理器和存储指令的存储器件。 当处理器执行时,指令使得处理器从第一信息处理设备接收区域指定信息和位置信息,区域指定信息指定图像中的显示区域,显示区域包括多个部分图像, 所述位置信息指示所述多个部分图像中的至少一个位置。 所述指令还使所述处理器向所述第二信息处理设备发送所述区域指定信息和所述位置信息。