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    • 6. 发明申请
    • Optical disk tracking servo circuit enabled to compensate for non-continuous track segments or prolonged defect
    • 光盘跟踪伺服电路能够补偿非连续轨道段或延长缺陷
    • US20050270942A1
    • 2005-12-08
    • US10887985
    • 2004-07-09
    • Francis KingJeffrey Liu
    • Francis KingJeffrey Liu
    • G11B7/00G11B7/09G11B19/04G11B20/18
    • G11B20/18G11B7/0948G11B19/04
    • The invention pertains to an improvement for a tracking and focusing servo and defect management circuit that controls the tracking and focusing of an optical head on an optical media in an apparatus for reproducing a data, sound or image recorded on the optical media. The invention characterizes by the provision of a circuit for managing modulation of an RF signal from the optical pickup head caused when the optical pickup head encounters a non-continuous track in segment arrangement or a very long extended defect such as a extended flaw in the disc resulted discontinuous track segment thereon, and an adjusting circuit which manages the loop gain of the tracking servo circuit per the track arrangement of defect detection and a tracking profile, whereby the responsiveness of the optical pickup head is improved and track skipping prevented or recovered.
    • 本发明涉及跟踪和聚焦伺服和缺陷管理电路的改进,其控制在用于再现记录在光学介质上的数据,声音或图像的装置中的光学介质上的光学头的跟踪和聚焦。 本发明的特征在于提供一种用于管理来自光学拾取头的RF信号的调制的电路,当光学拾取头在片段布置中遇到不连续的轨道或非常长的扩展缺陷(例如盘中的延长缺陷)时 在其上形成不连续的轨道段,以及调整电路,其管理每个缺陷检测的轨道布置跟踪轮廓的跟踪伺服电路的环路增益,从而提高光学拾取头的响应性并防止或恢复轨迹跳跃。
    • 9. 发明申请
    • Optical card drive with adaptive receiving tray and focusing adaptor
    • 具有自适应接收托盘和聚焦适配器的光卡驱动器
    • US20060248548A1
    • 2006-11-02
    • US11118222
    • 2005-04-28
    • Francis KingJeffrey Liu
    • Francis KingJeffrey Liu
    • G11B33/02G11B7/00G11B17/03G11B17/04
    • G11B25/04G11B7/0033G11B17/0408
    • An optical card or disc drive having a card or disc adaptive receiving carrying tray. A compound pivot mechanism engages a spindle hub with a card or disc inserted and carried on the tray. The spindle and hub is supported by a base chassis, which pivots with respect to a main frame. A sub-chassis is pivot connected with the mainframe and elastically coupled with the base chassis. A cam member on the main frame engages the sub-chassis to pivot the sub-chassis coincident with the tray being level positioned or lowered relative to card spindle hub. The sub-chassis in turn pivots the base chassis to engage or disengage the disc with the spindle hub. The movement of the tray also activates a motor and roller combination to receive or eject the card into or from the tray. The tray accommodates card or discs and comprises mechanisms for securing the card or disc while the card disc is retracted into and ejected from the main frame. A card guide member acts to reposition the card into tray slot after the card disengaging from the spinning spindle hub for ejection out of mainframe. A focusing adapter member works to meet the optical pick unit focusing distance requirement for difference thickness of optical card or disc.
    • 具有卡或盘自适应接收托盘的光卡或盘驱动器。 复合枢转机构将主轴毂与插入并承载在托盘上的卡或盘接合。 主轴和轮毂由底架支撑,底架相对于主机架枢转。 子底盘与主机枢转连接并与底架弹性联接。 主框架上的凸轮构件接合副机架,以使与底盘重合的副底盘枢转,该托架相对于卡主轴毂平稳定位或降低。 副底架又使基座枢转,从而与主轴毂接合或脱离盘。 托盘的移动还激活马达和滚轮组合,以将卡片接收或弹出卡盘进入托盘。 托盘容纳卡或盘,并且包括用于在卡盘缩回到主框架并从主框架弹出的情况下固定卡或盘的机构。 卡片引导构件用于在卡脱离主旋转轴之后将卡重新定位到托盘槽中,用于从主机中弹出。 聚焦适配器构件用于满足光学卡片或光盘的厚度差的光学拾取单元聚焦距离要求。