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    • 2. 发明授权
    • Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant
    • 用于使光学编码介质呈现不可读和防篡改的方法和装置
    • US06531262B1
    • 2003-03-11
    • US09690405
    • 2000-10-17
    • Nabil M. LawandyCharles M. ZeppAndrei SmukMarianne Krieg-Kowald
    • Nabil M. LawandyCharles M. ZeppAndrei SmukMarianne Krieg-Kowald
    • G11B370
    • G11B7/26G11B7/005G11B7/252G11B20/00086G11B20/00608G11B20/00695G11B20/0084G11B23/281Y10S430/146
    • Methods and apparatus are provided for making an optically readable media unreadable and tamper-resistant. A method has steps of (a) providing the media with a readout surface layer that is non-flat (i.e., textured in some way, such as by embossing, scratching, depositing a non-planar layer or regions, such as droplets) and that inhibits optical readout of the media; (b) applying a coating layer to the non-flat surface layer to smooth the non-flat surface and to enable optical readout of the media; and, after an initiation of a readout period, (c) removing the coating layer so as to expose the non-flat readout surface layer, thereby inhibiting optical readout of the media. Preferably, the coating layer is substantially index matched to the readout surface layer. The step of removing includes at least one of evaporating or subliming a component material of the coating layer A method is also disclosed for discouraging tampering with a readout-limiting mechanism by (a) providing the media with at least one layer that embodies the readout-limiting mechanism; (b) providing a textured surface that forms part of a layer that underlies the at least one layer, where the textured surface inhibits optical readout of the media; and (c) applying a coating layer over the textured surface to smooth the textured surface and to enable optical readout of the media, wherein removal of the coating layer exposes the textured surface thereby inhibiting optical readout of the media.
    • 提供了用于制造光可读介质不可读和防篡改的方法和装置。 一种方法具有以下步骤:(a)向介质提供非平坦的读出表面层(即,以某种方式,例如通过压花,刮擦,沉积非平面层或诸如液滴的区域)和 这抑制了介质的光学读出; (b)将涂层施加到非平坦表面层上以平滑非平坦表面并使光学读出介质; 并且在读出期间开始之后,(c)去除涂层以露出非平面读出表面层,从而抑制介质的光学读出。 优选地,涂层基本上与读出表面层相匹配。 还公开了去除步骤中的至少一种,其中包括使涂层的组分材料蒸发或升华的方法。方法还公开了通过(a)向介质提供体现读出限制机构的至少一层的阻止篡改读出限制机构的方法, 限制机制; (b)提供纹理表面,其形成位于所述至少一个层下面的层的一部分,其中织构化表面禁止介质的光学读出; 并且(c)在纹理化表面上涂覆涂层以平滑纹理化表面并且使得能够光学读出介质,其中去除涂层暴露纹理化表面,从而抑制介质的光学读出。
    • 3. 发明授权
    • Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant
    • 用于使光学编码介质呈现不可读和防篡改的方法和装置
    • US06780564B2
    • 2004-08-24
    • US10209376
    • 2002-07-30
    • Nabil M. LawandyCharles M. ZeppAndrei SmukMarianne Krieg-Kowald
    • Nabil M. LawandyCharles M. ZeppAndrei SmukMarianne Krieg-Kowald
    • G11B724
    • G11B7/26G11B7/005G11B7/252G11B20/00086G11B20/00608G11B20/00695G11B20/0084G11B23/281Y10S430/146
    • “Methods and apparatus are provided for making an optically readable media unreadable and tamper-resistant. A method has steps of (a)providing the media with a readout surface layer that is non-flat (i.e., texture in some way, such as by embossing, scratching, depositing a non-flat layer or regions, such as droplets) and that inhibits optical readout of the media; (b) applying a coating layer to the non-flat surface layer to smooth the non-flat surface and to enable optical readout of the media; and, after an initiation of a readout period, (c) removing the coating layer so as to expose the non-flat readout surface layer, thereby inhibiting optical readout of the media. Preferably, the coating layer is substantially index matched to the readout surface layer. The step of removing includes at least one of evaporating or subliming a component material of the coating layer A method is also disclosed for discouraging tampering with a readout-limiting mechanism by (a) providing the media with at least one layer that embodies the readout-limiting mechanism; (b) providing a textured surface that forms part of a layer that underlies the at least one layer, where the textured surface inhibits optical readout of the media; and (c) applying a coating layer over the textured surface to smooth the textured surface and to enable optical readout of the media, wherein removal of the coating layer exposes the textured surface thereby inhibiting optical readout of the media.”
    • “方法和装置被提供用于制造光学可读介质不可读和防篡改的方法具有以下步骤:(a)向介质提供非平坦的读出表面层(即,以某种方式,例如由 压花,刮擦,沉积非平坦层或诸如液滴的区域),并且阻止介质的光学读出;(b)将涂层施加到非平坦表面层上以平滑非平坦表面并且使能 介质的光学读出;以及在读出周期开始之后,(c)去除涂层以暴露非平面读出表面层,从而抑制介质的光学读出,优选地,涂层基本上 除去步骤包括蒸发或升华涂层的成分材料中的至少一种。还公开了一种方法,用于通过(a)提供介质wi来抑制篡改读出限制机构 至少一层体现读出限制机构; (b)提供纹理表面,其形成位于所述至少一个层下面的层的一部分,其中织构化表面禁止介质的光学读出; 并且(c)在纹理化表面上涂覆涂层以平滑纹理化表面并且使得能够光学读出介质,其中去除涂层暴露纹理表面,从而抑制介质的光学读出。
    • 4. 发明授权
    • Methods and apparatus for rendering an optically encoded medium unreadable
    • 用于渲染光学编码介质的方法和装置不可读
    • US06338933B1
    • 2002-01-15
    • US09338959
    • 1999-06-24
    • Nabil M. LawandyCharles M. ZeppKenneth S. Norland
    • Nabil M. LawandyCharles M. ZeppKenneth S. Norland
    • G11B370
    • G11B20/00086G11B7/252G11B7/2534G11B7/2542G11B7/2575G11B7/2585G11B20/00797G11B23/282G11B23/505Y10S430/146
    • Methods and apparatus are provided for making an optically readable media unreadable. The method includes steps of (a) providing the media with an optically activated mechanism that degrades the reflectivity of a surface wherein information is encoded; (b) exposing the media to optical radiation for reading out the information; and, during the step of exposing, (c) initiating the operation of the optically activated mechanism. In this embodiment the step of initiating includes steps of (d) generating singlet oxygen in a layer disposed on the media; and (e) reacting the singlet oxygen with a metal-containing layer for oxidizing the surface of the metal-containing layer, thereby degrading the reflectivity of the surface. In a further aspect the optically activated mechanism causes a defocusing of a readout beam, thereby degrading reflection of the readout beam from a surface wherein information is encoded. In another embodiment the method deforms a surface of the layer resulting in readout beam aberration or in an inability to correctly stay on track. In another embodiment a portion of the surface is removed to the atmosphere, such as by evaporation of sublimation. In this embodiment a layer of the media is comprised of a volatile component and at least one other component. Removing at least some of volatile component by evaporation or sublimation causes an increase in at least one of photoabsorption or scattering or surface roughness with the remaining component, thereby rendering at least a portion of encoded information of the media unreadable, or affecting the tracking operation.
    • 提供了用于使光可读介质不可读的方法和装置。 该方法包括以下步骤:(a)向介质提供光学激活机制,其降低其中信息被编码的表面的反射率; (b)将介质暴露于光学辐射以读出信息; 并且在曝光步骤期间,(c)启动光学激活机构的操作。 在该实施方案中,起始步骤包括(d)在设置在介质上的层中产生单线态氧的步骤; 和(e)使单线态氧与含金属层反应,以使含金属层的表面氧化,从而降低表面的反射率。 在另一方面,光学激活的机构导致读出光束的散焦,从而降低读出光束从其中信息被编码的表面的反射。 在另一个实施例中,该方法使层的表面变形,导致读出光束像差或不能正确地保持轨道。 在另一个实施例中,表面的一部分被移除到大气中,例如通过蒸发升华。 在该实施例中,介质层由挥发性组分和至少一种其它组分组成。 通过蒸发或升华去除至少一些挥发性组分导致与剩余组分的光吸收或散射或表面粗糙度中的至少一种的增加,从而使得介质的编码信息的至少一部分不可读或影响跟踪操作。
    • 8. 发明授权
    • Methods and apparatus for rendering an optically encoded medium unreadable
    • 用于渲染光学编码介质的方法和装置不可读
    • US06709802B2
    • 2004-03-23
    • US09996058
    • 2001-11-28
    • Nabil M. LawandyCharles M. ZeppKenneth S. Norland
    • Nabil M. LawandyCharles M. ZeppKenneth S. Norland
    • G11B724
    • G11B20/00086G11B7/252G11B7/2534G11B7/2542G11B7/2575G11B7/2585G11B20/00797G11B23/282G11B23/505Y10S430/146
    • Methods and apparatus are provided for making an optically readable media unreadable. The method includes steps of (a) providing the media with an optically activated mechanism that degrades the reflectivity of a surface wherein information is encoded; (b) exposing the media to optical radiation for reading out the information; and, during the step of exposing, (c) initiating the operation of the optically activated mechanism. In this embodiment the step of initiating includes steps of (d) generating singlet oxygen in a layer disposed on the media; and (e) reacting the singlet oxygen with a metal-containing layer for oxidizing the surface of the metal-containing layer, thereby degrading the reflectivity of the surface. In a further aspect the optically activated mechanism causes a defocusing of a readout beam, thereby degrading reflection of the readout beam from a surface wherein information is encoded. In another embodiment the method deforms a surface of the layer resulting in readout beam aberration or in an inability to correctly stay on track. In another embodiment a portion of the surface is removed to the atmosphere, such as by evaporation of sublimation. In this embodiment a layer of the media is comprised of a volatile component and at least one other component. Removing at least some of volatile component by evaporation or sublimation causes an increase in at least one of photoabsorption or scattering or surface roughness with the remaining component, thereby rendering at least a portion of encoded information of the media unreadable, or affecting the tracking operation.
    • 提供了用于使光可读介质不可读的方法和装置。 该方法包括以下步骤:(a)向介质提供光学激活机制,其降低其中信息被编码的表面的反射率; (b)将介质暴露于光学辐射以读出信息; 并且在曝光步骤期间,(c)启动光学激活机构的操作。 在该实施方案中,起始步骤包括(d)在设置在介质上的层中产生单线态氧的步骤; 和(e)使单线态氧与含金属层反应,以使含金属层的表面氧化,从而降低表面的反射率。 在另一方面,光学激活的机构导致读出光束的散焦,从而降低读出光束从其中信息被编码的表面的反射。 在另一个实施例中,该方法使层的表面变形,导致读出光束像差或不能正确地保持轨道。 在另一个实施例中,表面的一部分被移除到大气中,例如通过蒸发升华。 在该实施例中,介质层由挥发性组分和至少一种其它组分组成。 通过蒸发或升华去除至少一些挥发性组分导致与剩余组分的光吸收或散射或表面粗糙度中的至少一种的增加,从而使得介质的编码信息的至少一部分不可读或影响跟踪操作。
    • 10. 发明授权
    • Optical resolution of alkyl chroman-2-carboxylates
    • 烷基色满-2-羧酸酯的光学拆分
    • US5658796A
    • 1997-08-19
    • US475007
    • 1995-06-07
    • Richard F. Rossi, Jr.Charles M. ZeppDonald L. Heefner
    • Richard F. Rossi, Jr.Charles M. ZeppDonald L. Heefner
    • C07D311/66C12P41/00
    • C07D311/66C12P41/004Y10S435/881
    • Described herein is a process for resolving a racemic (C>3) alkyl (R, S) chroman-2-carboxylate compound useful as intermediates in the synthesis of optically pure pharmaceutical compounds is disclosed. The process utilizes a microbial enzyme derived from Serratia marcescens to catalyze the enantioselective hydrolysis of the (C>3) alkyl (S)-chroman-2-carboxylate enantiomer of the racemic mixture to its corresponding carboxylic acid at a faster rate than the R-enantiomer. An enantiomerically pure S-configured carboxylic acid is thereby formed which can undergo acidic esterification to provide an optically pure (C>3) alkyl (S)-chroman-2-carboxylate intermediate for subsequent pharmaceutical synthesis. The nonhydrolyzed (C>3) alkyl (R)-chroman-2-carboxylate enantiomer can also be isolated to provide an optically pure pharmaceutical precursor.
    • 本文描述了一种拆分用作光学纯药物化合物合成中的中间体的外消旋(C 3)烷基(R 3,S)色满-2-羧酸酯化合物的方法。 该方法利用来自粘质沙雷氏菌的微生物酶催化外消旋混合物的(C 3)烷基(S) - 苯并二氢吡喃-2-羧酸酯对映异构体对映体选择性水解速率比R- 对映体。 由此形成对映异构体纯的S-构型的羧酸,其可进行酸性酯化以提供用于随后的药物合成的光学纯的(C 3)烷基(S) - 苯并二氢吡喃-2-羧酸酯中间体。 也可以分离非水解(C 3)烷基(R) - 苯并二氢吡喃-2-羧酸酯对映异构体以提供光学纯的药物前体。