公开(公告)号：US20100027403A1

公开(公告)日：2010-02-04

申请号：US12511566

申请日：2009-07-29

申请人： Goro Fujita ,  Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

发明人： Goro Fujita ,  Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

IPC分类号： G11B7/135

CPC分类号： G11B7/08511 ,  G11B7/00452 ,  G11B7/083

摘要： An optical disc apparatus includes a light separator configured to separate a light beam emitted from a light source into a main beam and a sub-beam, an objective lens configured to, when the light beam is condensed and irradiated to an optical disc having a uniform recording layer in which a track is formed by record marks, irradiate at least part of the sub-beam to an area where the main beam is not irradiated in a radial direction which is defined as a direction of radius of the optical disc, and a signal generating unit configured to generate a mark layer distance signal, representing a distance between a focus of the light beam and a mark layer to which the track belongs, based on a return light beam resulting from at least one of the main beam and the sub-beam, which has been irradiated to the track.

摘要翻译： 光盘装置包括：光分离器，被配置为将从光源发射的光束分离成主光束和子光束;物镜，被配置为当光束被冷凝并照射到具有均匀的光盘时 通过记录标记形成轨道的记录层，将所述子光束的至少一部分照射到被定义为所述光盘的半径方向的径向的所述主光束不被照射的区域，以及 信号生成单元，被配置为基于从所述主光束和所述子像素中的至少一个产生的返回光来生成表示所述光束的焦点与所述轨道所属的标记层之间的距离的标记层距离信号 光束已被照射到轨道上。

公开(公告)号：US20090168632A1

公开(公告)日：2009-07-02

申请号：US12336031

申请日：2008-12-16

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

IPC分类号： G11B7/135

CPC分类号： G11B7/00452 ,  G11B7/1378 ,  G11B2007/0013

摘要： An optical disk apparatus appropriately adjusts the optical paths of a reference light beam and information light beam in an optical path forming section of an optical pickup, condenses the reference light beam and information light beam using an objective lens, and performs position control of the objective lens in the focusing and tracking directions so as to focus the reference light beam onto a reference track in a target mark layer, thereby focusing the focal point of the information light beam condensed by the objective lens onto a target track TG in the target mark layer.

摘要翻译： 光盘装置适当地调整光学拾取器的光路形成部分中的参考光束和信息光束的光路，使用物镜聚集参考光束和信息光束，并执行目标的位置控制 以便将参考光束聚焦在目标标记层中的参考轨道上，从而将由物镜聚光的信息光的焦点聚焦到目标标记层中的目标轨道TG上 。

公开(公告)号：US08345521B2

公开(公告)日：2013-01-01

申请号：US12511566

申请日：2009-07-29

申请人： Goro Fujita ,  Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

发明人： Goro Fujita ,  Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

IPC分类号： G11B15/04

CPC分类号： G11B7/08511 ,  G11B7/00452 ,  G11B7/083

摘要： An optical disc apparatus includes a light separator configured to separate a light beam emitted from a light source into a main beam and a sub-beam, an objective lens configured to, when the light beam is condensed and irradiated to an optical disc having a uniform recording layer in which a track is formed by record marks, irradiate at least part of the sub-beam to an area where the main beam is not irradiated in a radial direction which is defined as a direction of radius of the optical disc, and a signal generating unit configured to generate a mark layer distance signal, representing a distance between a focus of the light beam and a mark layer to which the track belongs, based on a return light beam resulting from at least one of the main beam and the sub-beam, which has been irradiated to the track.

摘要翻译： 光盘装置包括：光分离器，被配置为将从光源发射的光束分离成主光束和子光束;物镜，被配置为当光束被冷凝并照射到具有均匀的光盘时 通过记录标记形成轨道的记录层，将所述子光束的至少一部分照射到被定义为所述光盘的半径方向的径向的所述主光束不被照射的区域，以及 信号生成单元，被配置为基于从所述主光束和所述子像素中的至少一个产生的返回光来生成表示所述光束的焦点与所述轨道所属的标记层之间的距离的标记层距离信号 光束已被照射到轨道上。

公开(公告)号：US08107331B2

公开(公告)日：2012-01-31

申请号：US12336031

申请日：2008-12-16

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Goro Fujita

IPC分类号： G11B7/00

CPC分类号： G11B7/00452 ,  G11B7/1378 ,  G11B2007/0013

摘要： An optical disk apparatus appropriately adjusts the optical paths of a reference light beam and information light beam in an optical path forming section of an optical pickup, condenses the reference light beam and information light beam using an objective lens, and performs position control of the objective lens in the focusing and tracking directions so as to focus the reference light beam onto a reference track in a target mark layer, thereby focusing the focal point of the information light beam condensed by the objective lens onto a target track TG in the target mark layer.

摘要翻译： 光盘装置适当地调整光学拾取器的光路形成部分中的参考光束和信息光束的光路，使用物镜聚集参考光束和信息光束，并执行目标的位置控制 以便将参考光束聚焦在目标标记层中的参考轨道上，从而将由物镜聚光的信息光的焦点聚焦到目标标记层中的目标轨道TG上 。

公开(公告)号：US08274875B2

公开(公告)日：2012-09-25

申请号：US12452672

申请日：2009-05-25

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Kunihiko Hayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/00452 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/08564 ,  G11B7/0938 ,  G11B7/1275 ,  G11B7/24038 ,  G11B7/24044 ,  G11B2007/13727

摘要： Disclosed is an optical disc device that is able to increase accuracy in reproducing information from an optical disc. The optical disc device 10 calculates a focus error signal SFE2 and a sum signal SS1 while reciprocating an objective lens 21 in a focus direction until a distance between a focal point FS and a focal point FM1 becomes close to the depth d of a target position PG at the time of a pull-in operation, and when a trigger signal ST1 generated on the basis of the sum signal SS1 is at low level, starts focus control on the basis of the focus error signal SFE2. Therefore, focus control can start in a state where the focus error signal SFE2 curves in an S shape with sufficient amplitude.

摘要翻译： 公开了能够提高从光盘再现信息的精度的光盘装置。 光盘装置10计算聚焦误差信号SFE2和和信号SS1，同时使物镜21在聚焦方向上往复运动，直到焦点FS与焦点FM1之间的距离变得接近目标位置PG的深度d 并且当基于和信号SS1生成的触发信号ST1处于低电平时，基于聚焦误差信号SFE2开始聚焦控制。 因此，聚焦误差信号SFE2在具有足够幅度的S形状下弯曲的状态下可以开始聚焦控制。

公开(公告)号：US08238210B2

公开(公告)日：2012-08-07

申请号：US12953545

申请日：2010-11-24

申请人： Hirotaka Miyamoto ,  Takeshi Kubo ,  Kimihiro Saito

发明人： Hirotaka Miyamoto ,  Takeshi Kubo ,  Kimihiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/00453 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/24038 ,  G11B7/24044 ,  G11B2007/0009

摘要： An optical recording medium driving apparatus includes an optical pickup which irradiates first and second laser lights from one object lens with respect to an optical recording medium having a bulk layer and a tilt detection surface; a focus control portion that performs the focus control relative to each predetermined position of the optical recording medium in regard to each of the first and second laser lights; a tracking control portion that controls the position of the object lens to perform the tracking control of the first and second laser lights relative to the optical recording medium; and a tilt control portion.

摘要翻译： 光记录介质驱动装置包括一个光拾取器，该光拾取器相对于具有本体层和倾斜检测表面的光记录介质从一个物镜照射第一和第二激光; 聚焦控制部分，其相对于所述第一和第二激光中的每一个执行相对于所述光学记录介质的每个预定位置的聚焦控制; 跟踪控制部分，其控制所述物镜的位置以相对于所述光记录介质执行所述第一和第二激光的跟踪控制; 和倾斜控制部。

公开(公告)号：US20120147725A1

公开(公告)日：2012-06-14

申请号：US13309088

申请日：2011-12-01

申请人： Daisuke Ueda ,  Kimihiro Saito ,  Hirotaka Miyamoto

发明人： Daisuke Ueda ,  Kimihiro Saito ,  Hirotaka Miyamoto

IPC分类号： G11B7/1374 ,  G11B7/127

CPC分类号： G11B7/083 ,  G11B7/00772 ,  G11B7/0908 ,  G11B7/0938 ,  G11B2007/0009

摘要： A reproducing apparatus includes: a first laser irradiation section irradiating an optical recording medium having a bulk recording layer and recording marks formed by focusing a laser beam on each predetermined layer position in the recording layer, with a first laser beam through an objective lens; a focus position adjusting section adjusting a focus position of the first laser beam; a beam receiving section receiving a reflected beam of the first laser beam from the marks and generating a light receiving signal; a reproducing section reproducing information recorded with the marks based on the light receiving signal; and a control section performing control to allow the focus position in reproduction of the information to correspond to a position shifted by a certain distance to an upper layer side from a focus position of the laser beam in forming the mark at the layer positions as a reproducing object.

摘要翻译： 一种再现装置，包括：第一激光照射部，照射具有体积记录层的光记录介质和通过将激光束聚焦在记录层中的每个预定层位置而形成的记录标记，第一激光束通过物镜; 调整第一激光束的聚焦位置的对焦位置调整部; 光束接收部分，从所述标记接收所述第一激光束的反射光束并产生光接收信号; 再现部分，根据光接收信号再现记录有标记的信息; 以及控制部，其执行控制，以使得所述信息的再现中的所述焦点位置对应于在形成所述层位置处的标记时作为再现的从形成所述标记的所述激光束的焦点位置向上层侧偏移一定距离的位置 目的。

公开(公告)号：US20110134732A1

公开(公告)日：2011-06-09

申请号：US12953545

申请日：2010-11-24

申请人： Hirotaka Miyamoto ,  Takeshi Kubo ,  Kimihiro Saito

发明人： Hirotaka Miyamoto ,  Takeshi Kubo ,  Kimihiro Saito

IPC分类号： G11B7/09 ,  G11B7/24

CPC分类号： G11B7/0956 ,  G11B7/00453 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/24038 ,  G11B7/24044 ,  G11B2007/0009

摘要： An optical recording medium driving apparatus includes an optical pickup which irradiates first and second laser lights from one object lens with respect to an optical recording medium having a bulk layer and a tilt detection surface; a focus control portion that performs the focus control relative to each predetermined position of the optical recording medium in regard to each of the first and second laser lights; a tracking control portion that controls the position of the object lens to perform the tracking control of the first and second laser lights relative to the optical recording medium; and a tilt control portion.

摘要翻译： 光记录介质驱动装置包括一个光拾取器，该光拾取器相对于具有本体层和倾斜检测表面的光记录介质从一个物镜照射第一和第二激光; 聚焦控制部分，其相对于所述第一和第二激光中的每一个执行相对于所述光学记录介质的每个预定位置的聚焦控制; 跟踪控制部分，其控制所述物镜的位置以相对于所述光记录介质执行所述第一和第二激光的跟踪控制; 和倾斜控制部。

公开(公告)号：US08395976B2

公开(公告)日：2013-03-12

申请号：US12272179

申请日：2008-11-17

申请人： Kimihiro Saito ,  Hirotaka Miyamoto ,  Toshihiro Horigome

发明人： Kimihiro Saito ,  Hirotaka Miyamoto ,  Toshihiro Horigome

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/00452 ,  G11B7/0053 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/0938 ,  G11B2007/0013

摘要： An optical disc apparatus can make the focus of an information light beam converged by an objective lens agree with a target track of a target mark layer of an optical disc by appropriately predefining the distance between the focus of a servo light beam and that of the information light beam with regard to the direction of the thickness and a radial direction of the optical disc by means of the optical pickup of the apparatus and then operating for focus control and tracking control of the objective lens so as to make focus of the servo light beam converged by the objective lens agree with a reference track of a reference mark layer.

摘要翻译： 光盘装置可以通过适当地预先定义伺服光束的焦点与信息的焦点之间的距离，使由物镜会聚的信息光束的焦点与光盘的目标标记层的目标轨迹一致 通过装置的光学拾取器相对于厚度方向和光盘的径向方向的光束，然后操作用于物镜的聚焦控制和跟踪控制，以便使伺服光束的焦点 物镜会聚，与参考标记层的参考轨道一致。

公开(公告)号：US20130010583A1

公开(公告)日：2013-01-10

申请号：US13634953

申请日：2011-03-26

申请人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Norihiro Tanabe

发明人： Hirotaka Miyamoto ,  Kimihiro Saito ,  Norihiro Tanabe

IPC分类号： G11B7/1374 ,  G11B7/1353

CPC分类号： G11B7/1376 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/0953 ,  G11B2007/0009

摘要： The present invention relates to an optical pick, an optical drive device, and a light irradiation method capable of suppressing a generated amount of shift Δx of a spot position.The optical pickup irradiates an optical recording medium through a common objective lens which irradiates a first light for use in information recording in or information reproduction from a recording layer and a second light different from the first light, the optical recording medium includes a reference surface having a reflection film in which a position director is formed in a spiral form or the like form, and the recording layer which is provided in a layer position different from the reference surface and in which a mark corresponding to irradiation of light is formed and hence information is recorded. The optical pickup adjusts a focusing position of the first light having passed through the objective lens by changing collimation of the first light entering the objective lens, thereby suppressing the shift Δx of a spot position between the first light and the second light which occurs due to the eccentricity of the optical recording medium. A magnification of the second light is within a magnification range of the first light.

摘要翻译： 光拾取器，光驱动装置和光照射方法技术领域本发明涉及能够抑制斑点位置的发生移位量Dgr×D的光拾取器，光驱动装置和光照射方法。 光拾取器通过照射用于信息记录的第一光或从记录层的信息再现的第一光和与第一光不同的第二光的公共物镜照射光记录介质，光记录介质包括具有 其中位置导向器形成为螺旋形状或类似形式的反射膜，以及设置在与参考表面不同的层位置并且其中形成有与光的照射相对应的标记的记录层，因此信息 被记录。 光学拾取器通过改变进入物镜的第一光的准直来调节已经通过物镜的第一光的聚焦位置，从而抑制发生在第一光和第二光之间的光点位置的偏移＆Dgr; x 由于光记录介质的偏心。 第二光的放大率在第一光的放大范围内。