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    • 1. 发明申请
    • FOCUS CONTROL IN A MULTIPLE-BEAM DISC DRIVE
    • 多光束驱动器中的聚焦控制
    • US20080019237A1
    • 2008-01-24
    • US11571583
    • 2005-07-11
    • Teunis TUKKERCoen LIEDENBAUMAlexander VAN DER LEE
    • Teunis TUKKERCoen LIEDENBAUMAlexander VAN DER LEE
    • G11B7/00
    • G11B7/131G11B7/0917G11B7/0943G11B7/14
    • A method for controlling an optical disc drive apparatus (1) which comprises: light beam generating means (31) for generating a plurality of N optical beams (32(i)); means (33, 34, 37) for focusing said beams in respective focus spots (F(i)); at least one adjustable member (34) for axially displacing said focus spots; comprises the step of calculating an optimum setting (ZOPTIMUM) for the adjustable member (34), such that the out-of-focus condition for the optical system (30) as a whole is as small as possible. The position of the adjustable member (34) may be controlled to be substantially equal to the said optimum setting (ZOPTIMUM). Or, one specific beam is maintained in a focus condition, the beam having number m=mOPT selected according to mOPT=±INTEGERSQUARE{(N−1)/(2√2)} in case N is odd or mOPT=±INTEGERROUND IN−(N−2)/8) in case N is even.
    • 一种用于控制光盘驱动装置(1)的方法,包括:用于产生多个N个光束(32(i))的光束产生装置; 用于将所述光束聚焦在各个焦点(F(i))中的装置(33,34,37); 至少一个可调节构件(34),用于轴向移动所述聚焦点; 包括为可调节构件(34)计算最佳设置(ZOPTIMUM)的步骤,使得整个光学系统(30)的离焦条件尽可能小 。 可调节构件(34)的位置可以被控制为基本上等于所述最佳设定(Z> UM UM UM UM)。 或者,一个特定的光束被保持在聚焦条件下,根据m OPT =±INTEGERSQUARE {(N-1)/(2))选择的数字为λm = mOPT < √2)},如果N为奇数或mOPT =±INTEGERROUND IN-(N-2)/ 8),在N为偶数的情况下。
    • 2. 发明申请
    • Multi-Dimensional Optical Scanner
    • 多维光学扫描仪
    • US20080062852A1
    • 2008-03-13
    • US11576904
    • 2005-10-13
    • Alexander Van Der LeeCoen Theodoru LiedenbaumTeunis Tukker
    • Alexander Van Der LeeCoen Theodoru LiedenbaumTeunis Tukker
    • G11B7/00
    • G11B7/1378G11B7/0909G11B7/14
    • The present invention relates to an optical scanning device for reading and/or writing on a plurality of tracks on an optical storage medium (1), said scanning device comprising optical means (17) for focusing a plurality of beams, after being reflected from said medium, onto an observation plane (22), and for introducing astigmatism into at least one of said reflected beams, and a photo-detector (18) comprising a plurality of detector segments, arranged in said observation plane (22) to receive said at least one astigmatic reflected beam. The scanning device further comprises means (19) for generating a focus error signal (FES) by combining signals produced by said detector segments, means (19) for generating a central aperture signal by adding signals from all the detector segments, and means (19, 21) for determining when said central aperture signal exceeds a predefined threshold, indicating a useful range of said focus error signal, and, when this is the case, adjusting the focus of said objective lens (15) based on said focus error signal. According to this design, the CA-signal ensures that tracking is only based on the focus error signal in a range in which tracking can be based on it, thereby ensuring satisfactory closed loop tracking.
    • 本发明涉及一种用于在光学存储介质(1)上的多个磁道上读取和/或写入光学扫描装置,所述扫描装置包括用于聚焦多个光束的光学装置(17),在从所述光学存储介质 介质,到观察平面(22)上,并且用于将散光引入到所述反射光束中的至少一个中;以及光检测器(18),包括多个检测器段,布置在所述观察平面(22)中以接收所述在 至少一个散光反射光束。 扫描装置还包括用于通过组合由所述检测器段产生的信号来产生聚焦误差信号(FES)的装置(19),用于通过加上来自所有检测器段的信号产生中心孔径信号的装置(19)和装置 ,21),用于确定所述中心孔径信号何时超过预定阈值,指示所述聚焦误差信号的有用范围,并且在这种情况下,基于所述聚焦误差信号调整所述物镜(15)的焦点。 根据这种设计,CA信号确保跟踪仅基于跟踪可以基于其的范围内的聚焦误差信号,从而确保令人满意的闭环跟踪。
    • 5. 发明申请
    • Spot Aberrations in a Two-Dimensional Optical Storage System
    • 二维光存储系统中的斑点像差
    • US20080008061A1
    • 2008-01-10
    • US11568811
    • 2005-05-11
    • Dominique BrulsAlexander Van Der LeeChristopher Busch
    • Dominique BrulsAlexander Van Der LeeChristopher Busch
    • G11B20/18
    • G11B7/00736G11B7/005G11B7/0053G11B7/0956G11B7/14
    • Thus, in conventional, one-dimensional optical storage, the data is arranged in a linear fashion and is read out by a single spot (102). In order to increase data rates and storage capacity, it has been proposed to arrange the data in an isotropic, hexagonal lattice (200) and employ multiple spots (202) for read-out. Due to the high bit-intensity, 2D inter symbol interference (ISI) has a significant effect on bit detection. Aberrations in the readout spots (202) can change the form of ISI and, therefore, hamper 2D bit detection. Thus, a method and apparatus is proposed, wherein by evaluating the ISI of the readout spots (202) by scanning over a known calibration pattern, i.e. a bit pattern selected such that its optical response is characteristic of the shape of the readout spot, the aberrations in the readout spot can be determined and beneficially compensated for, as required.
    • 因此,在传统的一维光学存储器中,数据以线性方式布置并且由单个点读出(102)。 为了提高数据速率和存储容量,已经提出将数据排列成各向同性的六边形网格(200),并且使用多个点(202)进行读出。 由于高比特率,2D码间干扰(ISI)对比特检测有显着影响。 读出点(202)中的像差可以改变ISI的形式,因此妨碍2D位检测。 因此,提出了一种方法和装置,其中通过通过扫描已知的校准图案来评估读出点(202)的ISI,即,选择的位图案使得其光学响应是读出点的形状的特征, 可以根据需要确定读出点中的像差并有益地补偿。
    • 6. 发明申请
    • Method and apparatus for two dimensional optical storage of data
    • 用于数据二维光学存储的方法和装置
    • US20070104064A1
    • 2007-05-10
    • US10581642
    • 2004-11-30
    • Alexander Van Der LeeChristopher BuschDominique BrulsPeter Coops
    • Alexander Van Der LeeChristopher BuschDominique BrulsPeter Coops
    • G11B7/00
    • G11B7/00736G11B2007/0013
    • The invention relates to a data processing system comprising a computer having a memory for storage and retrieval of at least one application program embodying a pre-determined functionality, and for storage and retrieval of at least one data-file, which computer comprises a user interface for entertaining communication between the computer and a user of said computer, whereby the at least one application program comprises validation software for checking and enabling the operability of said application program in connection with the at least one data-file, and processing software for executing the said functionality in connection with the at least one data-file in dependence of said enabling by the validation software, whereby the validation software is executable separately and independent from the processing software.
    • 本发明涉及一种数据处理系统,包括具有用于存储和检索体现预定功能的至少一个应用程序的存储器的计算机,以及用于存储和检索至少一个数据文件的计算机,该计算机包括用户界面 用于在所述计算机和所述计算机的用户之间进行通信,由此所述至少一个应用程序包括用于检查并使所述应用程序与所述至少一个数据文件相关的可操作性的验证软件,以及用于执行所述至少一个数据文件的处理软件 所述与所述至少一个数据文件相关的功能与所述验证软件的所述启用相关,由此所述验证软件可独立且独立于所述处理软件执行。
    • 7. 发明申请
    • Multi-beam optical scanning device
    • 多光束光学扫描装置
    • US20070082562A1
    • 2007-04-12
    • US10577101
    • 2004-10-29
    • Alexander Van Der LeeChristopher Busch
    • Alexander Van Der LeeChristopher Busch
    • H01R13/73
    • G11B7/0916G11B7/08511G11B7/1381G11B7/14
    • The present invention relates to an optical scanning device for reading out from or writing on an information carrier. Said optical scanning device comprises a radiation source for producing a radiation beam, means for dividing the rad i tion am infordation calriero sub-beams, focusing means for focusing the plurality of spots on said information carrier, which reflects said plurality of radiation sub-beams towards a detection branch and focus error detection means for detecting a focus error signal. Said focus error detection means comprise on said detection branch, a servo lens for focusing the reflected radiation sub-beams onto a focus plane, a spatial filter for isolating a reflected radiation sub-beam at the focus plane and a split detector for detecting a focus error signal from the isolated radiation sub-beam. The focus error detection means further comprise decision sub-means for deciding whether the focus error signal can be used to correct a position of the focusing means.
    • 本发明涉及一种用于从信息载体上读出或写入的光学扫描装置。 所述光学扫描装置包括用于产生辐射束的辐射源,用于分割辐射光束子光束的装置,用于将多个光点聚焦在所述信息载体上的聚焦装置,其反射所述多个辐射子束 朝向检测分支和聚焦误差检测装置,用于检测聚焦误差信号。 所述聚焦误差检测装置包括在所述检测支路上的用于将反射的辐射子束聚焦到聚焦平面上的伺服透镜,用于隔离焦点平面处的反射辐射子光束的空间滤光器和用于检测焦点的分割检测器 来自隔离辐射子光束的误差信号。 聚焦误差检测装置还包括判定子装置,用于判定聚焦误差信号是否可用于校正聚焦装置的位置。
    • 9. 发明申请
    • VELOCITY DETERMINATION APPARATUS
    • 速度确定装置
    • US20110160967A1
    • 2011-06-30
    • US13061787
    • 2009-09-07
    • Holger MoenchMark CarpaijAlexander Van Der Lee
    • Holger MoenchMark CarpaijAlexander Van Der Lee
    • B60R21/01
    • G01P3/366B60T7/22G01S7/4916G01S17/58G01S17/936
    • The invention relates to a velocity determination apparatus for determining a relative velocity between a first object (12), to which the velocity determination apparatus is attachable, and a second object (1). The velocity determination apparatus comprises a laser (3) having a laser cavity (4) for emitting first radiation (5), which is reflected by the second object (1), wherein the reflected radiation interferes with the first radiation (5) within the laser cavity (4). An interference signal detector (7) detects an interference signal depending on the interference within the laser cavity (4) and a velocity determination unit (8) determines the relative velocity based on the interference signal. A reliability value determination unit (9) determines a reliability value for indicating the reliability of the determined relative velocity based on at least one of the group consisting of the detected interference signal, the determined relative velocity and a characteristic of the laser.
    • 本发明涉及一种速度确定装置,用于确定速度确定装置可附接到的第一物体和第二物体之间的相对速度。 速度确定装置包括具有用于发射第一辐射(5)的激光腔(4)的激光器(3),其由第二物体(1)反射,其中反射辐射干扰第一辐射(5)内的第一辐射 激光腔(4)。 干扰信号检测器(7)根据激光腔(4)内的干涉来检测干扰信号,速度确定单元(8)根据干扰信号确定相对速度。 可靠性值确定单元(9)基于由检测到的干扰信号,所确定的相对速度和激光器的特性中的至少一个确定用于指示所确定的相对速度的可靠性的可靠性值。
    • 10. 发明申请
    • Record carrier for the optical storage and retrieval of information
    • 记录载体的光学存储和检索信息
    • US20070030794A1
    • 2007-02-08
    • US10556611
    • 2004-05-13
    • Christopher BuschJohannes Theordorus WilderbeekAlexander Van Der Lee
    • Christopher BuschJohannes Theordorus WilderbeekAlexander Van Der Lee
    • G11B3/70
    • G11B7/252B82Y10/00G11B7/24G11B7/2585G11B7/259G11B7/2595
    • The invention relates to a record carrier for the storage and retrieval of information, comprising: a substrate (1), an active layer (2) for retention of information, the active layer employing bit-position encoding for the storage and retrieval of information and an energy shielding layer for shielding the energy during writing of the information in the active layer. Preferably, the energy shielding layer comprises a patterned reflective mask layer (3) or a switchable mask layer. Preferably, the reflective mask layer comprises a material with a relatively high thermal conductivity. Preferably, the patterned reflective mask layer comprises a metal or a metal alloy, preferably comprising aluminum silver, gold or copper. Preferably, the switchable mask layer comprises a thermo-chromic layer and is substantially transparent during the retrieval of information from the active layer. According to the invention, the record carrier has a relatively high information density.
    • 本发明涉及一种用于存储和检索信息的记录载体,包括:衬底(1),用于保留信息的有源层(2),所述有源层采用用于存储和检索信息的比特位置编码,以及 能量屏蔽层,用于在有源层中写入信息期间屏蔽能量。 优选地,能量屏蔽层包括图案化反射掩模层(3)或可切换掩模层。 优选地,反射掩模层包括具有相对高的导热性的材料。 优选地,图案化的反射掩模层包括金属或金属合金,优选包括铝银,金或铜。 优选地,可切换掩模层包括热铬层,并且在从有源层检索信息期间基本上是透明的。 根据本发明,记录载体具有较高的信息密度。