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公开(公告)号：US20090245065A1
公开(公告)日：2009-10-01
申请号：US12362927
申请日：2009-01-30
CPC分类号： G11B7/0938 , G11B7/00452 , G11B7/0065 , G11B7/08511 , G11B7/1275 , G11B7/1378 , G11B7/24038 , G11B7/24044 , G11B2007/0009
摘要： A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam.
摘要翻译： 焦点控制部分首先根据接收参考反射光束的结果执行参考光束聚焦在光盘的参考层上的参考聚焦控制处理，然后从参考聚焦控制处理切换到 信息聚焦控制处理，其中根据接收信息反射光束的结果，信息光束聚焦在光盘的标记层上。
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公开(公告)号：US20100195453A1
公开(公告)日：2010-08-05
申请号：US12452672
申请日：2009-05-25
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。
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公开(公告)号：US08345521B2
公开(公告)日：2013-01-01
申请号：US12511566
申请日：2009-07-29
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。
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4.发明授权公开(公告)号：US08040764B2
公开(公告)日：2011-10-18
申请号：US12472667
申请日：2009-05-27
IPC分类号： G11B7/00
CPC分类号： G11B7/08523 , G11B7/00452 , G11B7/0065 , G11B7/083 , G11B7/0901 , G11B7/0908 , G11B7/0938 , G11B7/0941 , G11B7/1378 , G11B7/13925 , G11B2007/0009
摘要： An optical disc apparatus includes an objective lens that converges a light beam emitted from a light source and irradiates an optical disc having recording marks formed in a uniform recording layer with it, a detection signal generation section that receives a return light beam from the recording mark and generates a detection signal, a servo control signal generation section that generates a servo control signal representing relative displacement between the recording mark and a focus of the light beam from the detection signal and a servo signal correction section that generates a correction servo control signal by connecting peaks or neighborhoods of the peaks of servo control signals, the peaks being produced according to the recording marks.
摘要翻译： 一种光盘装置，包括：会聚从光源射出的光束的物镜，照射具有形成在均匀记录层中的记录标记的光盘;检测信号生成部，其从记录标记接收返回光束; 并产生检测信号;伺服控制信号生成部，其根据检测信号生成表示记录标记与光束焦点之间的相对位移的伺服控制信号;以及伺服信号校正部，其通过以下步骤生成校正伺服控制信号 连接伺服控制信号的峰值的峰值或邻域，根据记录标记产生峰值。
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公开(公告)号：US07978569B2
公开(公告)日：2011-07-12
申请号：US12362927
申请日：2009-01-30
IPC分类号： G11B7/00
CPC分类号： G11B7/0938 , G11B7/00452 , G11B7/0065 , G11B7/08511 , G11B7/1275 , G11B7/1378 , G11B7/24038 , G11B7/24044 , G11B2007/0009
摘要： A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam.
摘要翻译： 焦点控制部分首先根据接收参考反射光束的结果执行参考光束聚焦在光盘的参考层上的参考聚焦控制处理，然后从参考聚焦控制处理切换到 信息聚焦控制处理，其中根据接收信息反射光束的结果，信息光束聚焦在光盘的标记层上。
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6.发明申请公开(公告)号：US20090296542A1
公开(公告)日：2009-12-03
申请号：US12472667
申请日：2009-05-27
IPC分类号： G11B7/00
CPC分类号： G11B7/08523 , G11B7/00452 , G11B7/0065 , G11B7/083 , G11B7/0901 , G11B7/0908 , G11B7/0938 , G11B7/0941 , G11B7/1378 , G11B7/13925 , G11B2007/0009
摘要： An optical disc apparatus includes an objective lens that converges a light beam emitted from a light source and irradiates an optical disc having recording marks formed in a uniform recording layer with it, a detection signal generation section that receives a return light beam from the recording mark and generates a detection signal, a servo control signal generation section that generates a servo control signal representing relative displacement between the recording mark and a focus of the light beam from the detection signal and a servo signal correction section that generates a correction servo control signal by connecting peaks or neighborhoods of the peaks of servo control signals, the peaks being produced according to the recording marks.
摘要翻译： 一种光盘装置，包括：会聚从光源射出的光束的物镜，照射具有形成在均匀记录层中的记录标记的光盘;检测信号生成部，其从记录标记接收返回光束; 并产生检测信号;伺服控制信号生成部，其根据检测信号生成表示记录标记与光束焦点之间的相对位移的伺服控制信号;以及伺服信号校正部，其通过以下步骤生成校正伺服控制信号 连接伺服控制信号的峰值的峰值或邻域，根据记录标记产生峰值。
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公开(公告)号：US08274875B2
公开(公告)日：2012-09-25
申请号：US12452672
申请日：2009-05-25
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。
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公开(公告)号：US20100027403A1
公开(公告)日：2010-02-04
申请号：US12511566
申请日：2009-07-29
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。
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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 。
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10.发明授权公开(公告)号：US08369201B2
公开(公告)日：2013-02-05
申请号：US13053566
申请日：2011-03-22
IPC分类号： G11B7/00
CPC分类号： G11B7/0908 , G11B7/00781 , G11B7/0938 , G11B7/1376 , G11B2007/0013
摘要： There is provided an optical pickup including: an optical-system having an object-lens illuminating a first light for information recording or reproducing on a recording layer as a target and a second light on an optical-recording medium including a reference plane having a reflection-layer and the recording-layer at a layer position different from that of the reference-plane and on which information recording is performed through mark formation, and a focus-aligned-position-adjusting unit adjusting a focus-aligned position of the first light through the object-lens by changing collimation thereof incident to the object-lens; and a focusing-mechanism driving the object-lens in a focusing direction, wherein, when a depth of focus λ/NA2 defined by a wavelength λ of the first light and a numerical aperture NA of the object lens is set to α and the maximum-surface-blur range is denoted by D, the optical-system is designed so that a use magnification ratio β satisfies |β|≧√(D/α).
摘要翻译： 提供了一种光学拾取器，包括：光学系统，其具有在作为目标的记录层上照射用于信息记录或再现的第一光的物镜，以及在包括具有反射的参考平面的光记录介质上的第二光 层和位于不同于参考平面的层位置处的记录层，并且通过标记形成执行信息记录;以及聚焦对准位置调整单元，调整第一光的聚焦对准位置 通过改变入射到物镜的准直通过物镜; 以及在聚焦方向上驱动物镜的聚焦机构，其中，当由所述第一光的波长λ和所述物镜的数值孔径NA定义的焦深λ/ NA2被设定为α并且最大值 表面模糊范围由D表示，光学系统设计成使用放大率＆bgr; 满足|＆bgr | |≧√（D /α）。
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