会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Multibeam optical pickup and servo method thereof
    • 多光束光学拾取器及其伺服方法
    • US5341355A
    • 1994-08-23
    • US350567
    • 1989-05-11
    • Hiroshi GotohIsamu ShibataIkuo MaedaTatsuaki Sakurai
    • Hiroshi GotohIsamu ShibataIkuo MaedaTatsuaki Sakurai
    • G11B7/095G11B7/00
    • G11B7/0953
    • A servo method in a multibeam optical pickup in which, at the time of a recording mode, a record information is confirmed and reproduced by a beam for reproduction while the record information is written by a beam for record, and the record information is reproduced by the beam for reproduction at the time of a reproducing mode, comprises the steps of detecting a focus servo signal and a track servo signal with respect to each of the beams for record and reproduction reflected by an optical disk; performing focusing and tracking operations based on the focus servo signal and the track servo signal provided by the beam for record at the time of the recording mode; and performing the focusing and tracking operations based on the focus servo signal and the track servo signal provided by the beam for reproduction at the time of the reproducing mode. In another servo method, the focusing and tracking operations may be performed according to the recording and reproducing modes. An optical pickup comprises a detector for detecting respective track error signals with respect to the preceding and subsequent beams; a tracking control device for performing a tracking servo control by the track error signal detected based on one of the beams; and a tangential control device for performing a tangential servo control by the track error signal detected based on the other of the beams.
    • 在多光束光学拾取器中的伺服方法,其中在记录模式时,通过用于再现的光束确认和再现记录信息,同时通过用于记录的光束写入记录信息,并且记录信息由 用于在再现模式时再现的光束包括以下步骤:检测相对于每个光束的聚焦伺服信号和光道伺服信号,用于由光盘反射的记录和再现; 基于聚焦伺服信号和由光束提供的轨道伺服信号在记录模式时进行记录的聚焦和跟踪操作; 并且在再现模式时基于由用于再现的光束提供的聚焦伺服信号和轨道伺服信号执行聚焦和跟踪操作。 在另一种伺服方法中,可以根据记录和再现模式执行聚焦和跟踪操作。 光学拾取器包括用于检测相对于先前和后续光束的各个光道误差信号的检测器; 跟踪控制装置,用于通过基于所述光束之一检测的轨道误差信号来执行跟踪伺服控制; 以及切向控制装置,用于通过基于另一个光束检测的轨道误差信号来执行切向伺服控制。
    • 3. 发明授权
    • Optical information read/write apparatus
    • 光信息读写装置
    • US5144617A
    • 1992-09-01
    • US610837
    • 1990-11-08
    • Hiroshi GotohIkuo MaedaSyuichi Honda
    • Hiroshi GotohIkuo MaedaSyuichi Honda
    • G11B7/085G11B7/12
    • G11B7/12G11B7/08582
    • An optical information read/write apparatus that comprises a casing for installing an optical disk therein and a first movable unit having an objective lens for converging an optical beam on the disk. The lens center moves on a radial direction line originated from the disk center. A first fixed unit is disposed aside the disk in the casing. The fixed unit has an optical source for emitting the beam and constitutes a reading optical pickup in conjunction with the first movable unit. A second movable unit is disposed in the same half side of the disk as the first movable unit. The second movable unit has an objective lens for converging an optical beam on the disk. The lens center of the second unit moves on a radial direction line originated from the disk center. A second fixed unit is disposed aside the disk. The second fixed unit has an optical source for emitting the beam of the second movable unit and constitutes a writing optical pickup in conjunction with the second movable unit.
    • 一种光信息读/写装置,包括用于在其中安装光盘的壳体和具有用于将光束会聚在盘上的物镜的第一可移动单元。 透镜中心在从盘中心起的径向线上移动。 将第一固定单元放置在壳体中的盘旁边。 固定单元具有用于发射光束的光源,并与第一可移动单元一起构成读取光学拾取器。 第二可移动单元设置在与第一可移动单元相同的盘的半侧。 第二可移动单元具有用于将光束会聚在盘上的物镜。 第二单元的透镜中心在从盘中心起的径向线上移动。 第二固定单元被放置在盘的旁边。 第二固定单元具有用于发射第二可移动单元的光束的光源,并且与第二可移动单元结合构成写入光学拾取器。