公开(公告)号：US07889447B2

公开(公告)日：2011-02-15

申请号：US12353564

申请日：2009-01-14

申请人： Juil Lee ,  Michael Ting ,  Mark David Bedillion

发明人： Juil Lee ,  Michael Ting ,  Mark David Bedillion

IPC分类号： G11B20/06

CPC分类号： G11B5/6005

摘要： A method includes: producing a readback signal using a recording head positioned adjacent to a recording medium, amplitude demodulating the readback signal to produce an amplitude demodulated signal, frequency demodulating the readback signal to produce a frequency demodulated signal, and using the amplitude demodulated signal and the frequency demodulated signal to determine contact of the recording head with the recording medium. An apparatus that can be used to implement the method is also provided.

摘要翻译： 一种方法包括：使用与记录介质相邻的记录头产生回读信号，对回读信号进行幅度解调以产生幅度解调信号，对回读信号进行频率解调以产生频率解调信号，并使用幅度解调信号和 频率解调信号以确定记录头与记录介质的接触。 还提供了可用于实现该方法的装置。

公开(公告)号：US20100177429A1

公开(公告)日：2010-07-15

申请号：US12353564

申请日：2009-01-14

申请人： Juil Lee ,  Michael Ting ,  Mark David Bedillion

发明人： Juil Lee ,  Michael Ting ,  Mark David Bedillion

IPC分类号： G11B21/02

CPC分类号： G11B5/6005

摘要： A method includes: producing a readback signal using a recording head positioned adjacent to a recording medium, amplitude demodulating the readback signal to produce an amplitude demodulated signal, frequency demodulating the readback signal to produce a frequency demodulated signal, and using the amplitude demodulated signal and the frequency demodulated signal to determine contact of the recording head with the recording medium. An apparatus that can be used to implement the method is also provided.

摘要翻译： 一种方法包括：使用与记录介质相邻的记录头产生回读信号，对回读信号进行幅度解调以产生幅度解调信号，对回读信号进行频率解调以产生频率解调信号，并使用幅度解调信号和 频率解调信号以确定记录头与记录介质的接触。 还提供了可用于实现该方法的装置。

公开(公告)号：US07570066B2

公开(公告)日：2009-08-04

申请号：US11933729

申请日：2007-11-01

申请人： Juil Lee

发明人： Juil Lee

IPC分类号： G01R27/26

CPC分类号： G01D5/2415 ,  G01D5/2451

摘要： An apparatus includes a first capacitive sensor connected to a first supply voltage, a second capacitive sensor connected to a second supply voltage, a sensing circuit for producing a sense voltage in response to current flowing in the first and second capacitive sensors, a first mixer for combining the sense voltage with a first reference voltage to produce a first signal representative of in-plane displacement between electrodes of the first and second capacitive sensors, and a second mixer for combining the sense voltage with a second reference voltage to produce a second signal representative of out-of-plane displacement between the electrodes of the first and second capacitive sensors.

摘要翻译： 一种装置包括连接到第一电源电压的第一电容传感器，连接到第二电源电压的第二电容传感器，用于响应于在第一和第二电容传感器中流动的电流产生感测电压的感测电路，用于 将感测电压与第一参考电压组合以产生表示第一和第二电容传感器的电极之间的面内位移的第一信号，以及用于将感测电压与第二参考电压组合以产生第二信号代表的第二混频器 在第一和第二电容传感器的电极之间的平面外位移。

公开(公告)号：US20060227687A1

公开(公告)日：2006-10-12

申请号：US10557383

申请日：2004-05-12

申请人： Alexander Padiy ,  Juil Lee

发明人： Alexander Padiy ,  Juil Lee

IPC分类号： G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/12

摘要： The invention relates to a new class of schemes for simultaneously compensating readout channel distortions in optical storage systems, such as defocus, spherical aberrations, optical data carrier tangential tilt, and radial tilt. The use of cascaded adaptive filtering steps applied to the readout data signal is proposed. A first adaptive phase-filtering step (WAP), dedicated to the compensation of the non-linear phase distortion caused by the tangential tilt, is made adaptive to a measure of the tangential tilt. A second adaptive amplitude-filtering step, dedicated to the compensation of amplitude channel frequency response distortions caused by tangential tilt as well as other channel distortions such as the defocus and the spherical aberration or other types of distortions which influence mainly only the amplitude frequency response of the channel, is made adaptive to an adaptation signal (ADS) generated by an adaptation step (ADAPT) defining a set of coefficients defining a filter used in this second filtering step, in minimizing an error between the output data signal and a target data signal, such as a least mean squares (LMS) error-based algorithm or zero-forcing (ZF) adaptation algorithm. Use: Optical reader/writer

摘要翻译： 本发明涉及用于同时补偿光学存储系统中的读出通道失真的新类别，例如散焦，球面像差，光学数据载体切线倾斜和径向倾斜。 提出了应用于读出数据信号的级联自适应滤波步骤的使用。 专门用于补偿由切向倾斜引起的非线性相位失真的第一自适应相位滤波步骤（WAP）被适应于切向倾斜的测量。 第二自适应幅度滤波步骤，专用于补偿由切向倾斜引起的振幅信道频率响应失真以及诸如散焦和球面像差的其它信道失真或其它类型的失真，其主要仅影响幅度频率响应 该信道被自适应于通过自适应步骤（ADAPT）生成的自适应信号（ADS），该自适应步骤（ADAPT）定义限定在该第二滤波步骤中使用的滤波器的系数集合，以最小化输出数据信号和目标数据信号之间的误差 ，例如最小均方（LMS）基于误差的算法或迫零（ZF）自适应算法。 用途：光学读写器

公开(公告)号：US20100157760A1

公开(公告)日：2010-06-24

申请号：US12376301

申请日：2007-07-31

申请人： Juil Lee ,  Antonius Emilius Theodorus Kuiper ,  Rudolf Johan Maria Vullers ,  Donato Pasquariello

发明人： Juil Lee ,  Antonius Emilius Theodorus Kuiper ,  Rudolf Johan Maria Vullers ,  Donato Pasquariello

IPC分类号： G11B19/04

CPC分类号： G11B7/24 ,  G11B7/0037 ,  G11B7/24038 ,  G11B7/252 ,  G11B23/282

摘要： The present invention relates to an optical storage medium (20) comprising a first data area (21) for storing content and a second data area (23) for storing limitation data (24) for limiting access to at least a portion of the first data area. It is desired that the period of time for which access to content stored on the storage medium is limited, such that, for instance, after said period of time unlimited access to said content is granted. To achieve this a state change means (27) is provided on the storage medium, adapted for changing its optical reflectivity and/or transmittance over time, said change directly preventing access to the second data area after a limited period of time or being indirectly used to decide whether access to the at least one portion of the first data area shall be limited according to said limitation data.

摘要翻译： 本发明涉及一种光存储介质（20），包括用于存储内容的第一数据区（21）和用于存储用于限制对第一数据的至少一部分的访问的限制数据（24）的第二数据区（23） 区。 期望存储在存储介质上的内容的访问的时间段被限制，使得例如在所述时间段之后，授予对所述内容的无限制访问权限。 为了实现这一点，在存储介质上提供状态改变装置（27），适于随时间改变其光学反射率和/或透射率，所述改变直接阻止在有限的时间段之后或间接使用第二数据区域 以决定是否根据所述限制数据限制对所述第一数据区的所述至少一部分的访问。

公开(公告)号：US20080304395A1

公开(公告)日：2008-12-11

申请号：US12096184

申请日：2006-11-29

申请人： Juil Lee

发明人： Juil Lee

IPC分类号： G11B7/135

CPC分类号： G11B7/08511 ,  G11B7/1387

摘要： A device reads and/or records marks in a track on a record carrier via near field optical recording. The device has a head including a lens to be positioned at a near field distance from a surface of the record carrier. An air gap controller is for controlling an air gap (81) between the lens and the surface, and has an approach mode for bringing the lens from a remote distance in the far field to the near field distance. Thereto the controller provides an increasing periodical excitation signal (83) for generating a sequence of approach instants at which the lens approaches the surface. At the approach instants the lens has substantially zero velocity (84). The sequence of approach instants brings the lens subsequently closer to the surface. When the lens enters in the near field range at one of the approach instants, the air gap controller is switched to closed loop mode. The periodical excitation (83) is synchronized to the rotation of the record carrier such that the approach instants correspond to a minimum of the disc displacement (82).

摘要翻译： 设备通过近场光学记录在记录载体上的轨道中读取和/或记录标记。 该装置具有包括透镜的头部，其位于离记录载体的表面近场距离处。 气隙控制器用于控制透镜和表面之间的空气间隙（81），并且具有用于将透镜从远场中的远距离带到近场距离的接近模式。 控制器提供增加的周期性激励信号（83），用于产生镜头接近表面的接近时间序列。 在接近时刻，镜头具有基本上为零的速度（84）。 接近时刻的顺序使镜头随后更接近表面。 当透镜在一个接近时刻进入近场范围时，气隙控制器切换到闭环模式。 定期激励（83）与记录载体的旋转同步，使得接近时刻对应于盘位移（82）的最小值。

公开(公告)号：US20090180371A1

公开(公告)日：2009-07-16

申请号：US12096615

申请日：2006-12-07

申请人： Juil Lee

发明人： Juil Lee

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/121 ,  G11B7/1387

摘要： An optical storage interface apparatus comprises a lens module (LM). The lens module (LM) may comprise, for example, a solid immersion lens for near-field optical readout or near-field optical recording, or both. The lens module (LM) forms a light spot (SP) on an optical information carrier (DSK) in response to a light beam (BO) that is projected on the lens module (LM). A lens actuator (LA) moves the lens module (LM) from a rest position, which is relatively distant from the optical information carrier (DSK), to a read position, which is relatively close to the optical information carrier (DSK). A controller verifies whether the lens module (LM), when moving from the rest position to the read position, has a velocity that is below a velocity threshold or not. If not, the controller causes the lens actuator (LA) to pull back the lens module (LM) with respect to the optical information carrier (DSK).

摘要翻译： 光学存储接口设备包括透镜模块（LM）。 透镜模块（LM）可以包括例如用于近场光学读出或近场光学记录的固体浸没透镜，或两者。 透镜模块（LM）响应于投射在透镜模块（LM）上的光束（BO），在光学信息载体（DSK）上形成光点（SP）。 透镜致动器（LA）将透镜模块（LM）从相对远离光信息载体（DSK）的静止位置移动到相对靠近光信息载体（DSK）的读取位置。 控制器验证当从静止位置移动到读取位置时镜头模块（LM）是否具有低于速度阈值的速度。 如果不是，则控制器使透镜致动器（LA）相对于光学信息载体（DSK）拉回镜头模块（LM）。

公开(公告)号：US20090028021A1

公开(公告)日：2009-01-29

申请号：US11569759

申请日：2005-05-20

申请人： Bin Yin ,  Sjoerd Stallinga ,  Juil Lee

发明人： Bin Yin ,  Sjoerd Stallinga ,  Juil Lee

IPC分类号： G11B20/18

CPC分类号： G11B7/0943 ,  G11B7/0901 ,  G11B7/0908

摘要： A signal processing technique is proposed for compensating for radial to focus crosstalk in an optical storage system including an astigmatic lens (25) and four-quadrant photodetector (26) for generating a focus error signal. A signal processor generates the focus error signal (FESRVO), a tracking error signal (TES) and a central aperture signal (CA) and the proposed radial and focus crosstalk scheme can be described by the following equation (I): Where IFESRVO represents the improved focus error signal and y1j and y2j are vector components for scaling. Instead, scalar adaptive scaling factors γ1 and γ2 may be applied which can be updated by minimising a cost function J(y1, y2), which is able to imply the radial to focus crosstalk components remaining in the focus error signal.

摘要翻译： 提出了一种信号处理技术，用于补偿包括用于产生聚焦误差信号的像散透镜（25）和四象限光电检测器（26）的光学存储系统中的径向对焦串扰。 信号处理器产生聚焦误差信号（FESRVO），跟踪误差信号（TES）和中心孔径信号（CA），并且所提出的径向和焦点串扰方案可以由以下等式（I）描述：其中IFESRVO表示 改进的聚焦误差信号，y1j和y2j是缩放的向量分量。 相反，可以应用标量自适应缩放因子gamma1和gamma2，其可以通过最小化成本函数J（y1，y2）进行更新，成本函数J（y1，y2）能够暗示聚焦误差信号中剩余的径向聚焦串扰分量。

公开(公告)号：US20070253312A1

公开(公告)日：2007-11-01

申请号：US11576539

申请日：2005-09-22

申请人： Juil Lee ,  Ferry Zijp

发明人： Juil Lee ,  Ferry Zijp

IPC分类号： G11B7/00

CPC分类号： G11B7/1387 ,  G11B7/0908

摘要： In an optical storage interface apparatus, a spot-forming lens projects a light spot on an optical information carrier in response to a light beam from a light source. There is an air gap (AG) between the spot-forming lens and the optical information carrier. A gap detector (PHD2) provides a gap indication signal (GIS) that varies with the air gap (AG) in accordance with a gap indication transfer function (F). A lens-positioning arrangement (CTRL, ACT) positions the spot-forming lens with respect to the optical information carrier on the basis of the gap indication signal (GIS). The lens-positioning arrangement (CTRL, ACT) comprises a compensator (CMP) for compensating nonlinearity in the gap indication transfer function (F). A suitable compensation transfer function (G) can be established on the basis of servo control loop measurements. Accordingly, compensation can be provided without any prior knowledge of the gap indication transfer function (F).

摘要翻译： 在光存储接口装置中，光斑形成透镜响应于来自光源的光束而将光点投射在光信息载体上。 在点形成透镜和光信息载体之间存在气隙（AG）。 间隙检测器（PHD 2）提供根据间隙指示传递函数（F）随气隙（AG）而变化的间隙指示信号（GIS）。 基于间隙指示信号（GIS），透镜定位装置（CTRL，ACT）相对于光信息载体定位成像透镜。 透镜定位装置（CTRL，ACT）包括用于补偿间隙指示传递函数（F）中的非线性的补偿器（CMP）。 可以基于伺服控制回路测量建立适当的补偿传递函数（G）。 因此，可以在没有间隙指示传递函数（F）的任何先验知识的情况下提供补偿。

公开(公告)号：US20080267036A1

公开(公告)日：2008-10-30

申请号：US10599862

申请日：2005-04-06

申请人： Juil Lee ,  Ferry Zijp

发明人： Juil Lee ,  Ferry Zijp

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/1387

摘要： A device reads and/or records marks in a track on a record carrier via near field optical recording. The device has a head including a lens to be positioned at a near field distance from a surface of the record carrier. An air gap controller is for controlling an air gap between the lens and the surface, and has an approach mode for bringing the lens from a remote distance in the far field (72) to the near field distance. Thereto the controller provides an increasing periodical excitation signal (73) for generating a sequence of approach instants (77) at which the lens approaches the surface. At the approach instants the lens has substantially zero velocity (76). The sequence of approach instants brings the lens subsequently closer to the surface. When the lens enters in the near field range (71) at one of the approach instants (77), the air gap controller is switched to closed loop mode.

摘要翻译： 设备通过近场光学记录在记录载体上的轨道中读取和/或记录标记。 该装置具有包括透镜的头部，其位于离记录载体的表面近场距离处。 气隙控制器用于控制透镜和表面之间的空气间隙，并且具有用于将透镜从远场（72）中的远程距离带到近场距离的接近模式。 控制器提供增加的定期激励信号（73），用于产生镜片接近表面的接近瞬间（77）的序列。 在接近时刻，镜头具有基本上为零的速度（76）。 接近时刻的顺序使镜头随后更接近表面。 当镜头在接近时刻（77）之一进入近场范围（71）时，气隙控制器切换到闭环模式。