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1. 发明申请

US20130051205A1 OPTICAL PICKUP AND OPTICAL READ/WRITE DRIVE 有权
标题翻译：光学拾取和光学读/写驱动
公开(公告)号：US20130051205A1
公开(公告)日：2013-02-28
申请号：US13398934
申请日：2012-02-17
申请人： Jun-ichi ASADA , Kazuo MOMOO , Yohichi SAITOH
发明人： Jun-ichi ASADA , Kazuo MOMOO , Yohichi SAITOH
IPC分类号： G11B7/1353 , G11B7/1263
CPC分类号： G11B7/00458 , G11B7/003 , G11B7/1353
摘要： In one embodiment of the present invention, an optical pickup for writing and reading data on an optical storage medium comprises a diffractive element for diffracting a light beam to split it into multiple light beams. The diffracted light beams includes a zero-order diffracted light beam for writing data on a track of the land or the groove of the optical storage medium and non-zero-order diffracted light beams for reading the data from the track. The diffractive element has first and second diffraction gratings that have mutually different grating vector directions and pitches. The first diffraction grating forms light beam spots on the same track by the non-zero-order and zero-order diffracted light beams. The second diffraction grating forms a light beam spot to extend to both sides of said track, or forms a light beam spot on one side of said track, by the non-zero-order diffracted light beams.
摘要翻译：在本发明的一个实施例中，用于在光学存储介质上写入和读取数据的光学拾取器包括用于衍射光束以将其分成多个光束的衍射元件。衍射光束包括用于在光存储介质的焊盘或凹槽的轨道上写入数据的零级衍射光束和用于从轨道读取数据的非零级衍射光束。衍射元件具有第一和第二衍射光栅，其具有相互不同的光栅矢量方向和间距。第一衍射光栅通过非零级和零级衍射光束在同一轨道上形成光束点。第二衍射光栅形成光束点，以延伸到所述轨道的两侧，或者通过非零级衍射光束在所述轨道的一侧上形成光束点。

2. 发明申请

US20130083641A1 OPTICAL PICKUP DEVICE AND OPTICAL READ/WRITE APPARATUS 有权
标题翻译：光学拾取器件和光学读/写设备
公开(公告)号：US20130083641A1
公开(公告)日：2013-04-04
申请号：US13609484
申请日：2012-09-11
申请人： Yasushi KOBAYASHI , Yohichi SAITOH , Kazuo MOMOO
发明人： Yasushi KOBAYASHI , Yohichi SAITOH , Kazuo MOMOO
IPC分类号： G11B7/09 , G11B7/127 , G11B7/1374 , G11B7/1353
CPC分类号： G11B7/00458 , G11B7/0901 , G11B7/0912 , G11B7/0916 , G11B7/1353 , G11B7/1381
摘要： In one embodiment, the optical pickup device includes: a light source that emits a light beam; a diffractive element that diffracts the light beam and generates a zero-order and ±first-order diffracted light beams; an objective lens that converges the diffracted light beams onto the same track on the storage medium; and a photodetector that receives the diffracted light beams reflected from the storage medium. If a distance from a light beam spot left by the zero-order diffracted light beam on the track to light beam spots left by the ±first-order diffracted light beams on that track is d [μm], the scanning linear velocity of the storage medium is v [m/s], and a time it takes for a phase-change material of the storage medium that has once been melted by the zero-order diffracted light beam to solidify is T [μs], vT≦d is satisfied.
摘要翻译：在一个实施例中，光学拾取装置包括：发射光束的光源; 衍射元件，衍射光束并产生零级和±一级衍射光束; 将衍射光束会聚在存储介质上的同一轨道上的物镜; 以及光接收器，其接收从存储介质反射的衍射光束。如果从轨道上的零级衍射光束留下的光束点与该磁道上的±一级衍射光束留下的光束点的距离为d [μm]，则存储器的扫描线速度介质是v [m / s]，并且一旦被零级衍射光束熔化的存储介质的相变材料固化所花费的时间是T [μs]，vT＆nlE; d满足。

3. 发明申请

US20130094337A1 OPTICAL READ/WRITE APPARATUS AND READ APPARATUS 有权
标题翻译：光学读/写设备和阅读设备
公开(公告)号：US20130094337A1
公开(公告)日：2013-04-18
申请号：US13609535
申请日：2012-09-11
申请人： Masatoshi YAJIMA , Yohichi SAITOH
发明人： Masatoshi YAJIMA , Yohichi SAITOH
IPC分类号： G11B7/00
CPC分类号： G11B7/00458 , G11B7/003 , G11B7/00375 , G11B7/0932 , G11B7/0935 , G11B7/14 , G11B7/24009
摘要： In one embodiment, the optical read/write apparatus includes a plurality of optical pickups arranged to cross tracks of an optical storage medium and a control section. On finding the data that has been written by any of those optical pickups inaccurate or on detecting any defect at a location where data is going to be written by any of the optical pickups, the control section instructs another one of the optical pickups to write that data on a different track from a track on which the data should have been written.
摘要翻译：在一个实施例中，光学读/写设备包括布置成交叉光存储介质和控制部分的轨道的多个光拾取器。在找到由任何这些光学拾取器写入的数据不准确或者在任何光学拾取器将要写入数据的位置上检测到任何缺陷时，控制部分指示另一个光学拾取器写入该与要写入数据的轨道不同的轨道上的数据。

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