Copy-protected data carrier
    22.
    发明申请
    Copy-protected data carrier 审中-公开
    复制保护的数据载体

    公开(公告)号:US20060147044A1

    公开(公告)日:2006-07-06

    申请号:US10551325

    申请日:2004-04-15

    IPC分类号: H04L9/00

    摘要: The present invention relates to a data carrier comprising an information layer (1) itself comprising a specific area (4) able to deliver a first optical signal and a second optical signal when illuminated by a light source. Said data carrier also comprises an additional layer (2) able to deliver an electrical signal when illuminated by the second optical signal, said electrical signal corresponding to a predetermined pattern. The combination of the first optical signal and of the electrical signal forms a cryptographic key that is required to decrypt encrypted data contained in the information layer. This invention is particularly relevant to the read out of data stored on optical discs of the Read Only Memory type.

    摘要翻译: 本发明涉及一种包括信息层(1)本身的数据载体,它包括当由光源照射时能够传送第一光信号和第二光信号的特定区域(4)。 所述数据载体还包括能够在由第二光信号照亮时传递电信号的附加层(2),所述电信号对应于预定模式。 第一光信号和电信号的组合形成了对包含在信息层中的加密数据进行解密所需的加密密钥。 本发明特别涉及读出存储在只读存储器类型的光盘上的数据。

    Compact lighting system and display device
    24.
    发明申请
    Compact lighting system and display device 有权
    紧凑型照明系统和显示设备

    公开(公告)号:US20050231976A1

    公开(公告)日:2005-10-20

    申请号:US10497481

    申请日:2002-12-05

    CPC分类号: G02B6/0046 G02B6/0055

    摘要: A compact backlight system for illuminating a display device (12) has a light-emitting panel (1) with a front wall (2) and an opposed rear wall (3) and with edge surfaces (4, 5). At least one of the edge surfaces (4) is light-transmitting. The backlight system has a light source (6) comprising a limited number of LEDs. Light from the light source (6) is coupled into the light-emitting panel (1) via the edge surface that is light-transmitting. According to the invention, the light-emitting panel (1) is wedge-shaped, and the surface area Si of the light-transmitting edge surface (4) and the surface area Sr of the opposite edge surface (5) fulfill the relation: 1

    摘要翻译: 用于照亮显示装置(12)的紧凑型背光系统具有带有前壁(2)和相对的后壁(3)和边缘表面(4,5)的发光面板(1)。 至少一个边缘表面(4)是透光的。 背光系统具有包含有限数量的LED的光源(6)。 来自光源(6)的光通过透光性的边缘面耦合到发光面板(1)中。 根据本发明,发光面板(1)是楔形的,并且透光边缘表面(4)的表面积S i和表面积S S 相对边缘表面(5)的满足以下关系:1 <(S / S> i <10),优选为1.5 <(S < 5 从透光边缘表面第一次通过发光面板(1)朝向相对的边缘表面(5)行进的光不能耦合到发光面板(1)外。

    LED backlight for LCD with color uniformity recalibration over lifetime
    25.
    发明授权
    LED backlight for LCD with color uniformity recalibration over lifetime 有权
    适用于LCD的LED背光,寿命长,颜色均匀性重新校准

    公开(公告)号:US07696964B2

    公开(公告)日:2010-04-13

    申请号:US11423412

    申请日:2006-06-09

    IPC分类号: G08B5/22 G09F9/33 G09G3/36

    摘要: An LED light source for LCD backlighting is described that recalibrates itself over time so that color and brightness uniformity across the backlight is maintained over the life of the backlight. The backlight contains clusters of red, green, and blue LEDs, each cluster generating a white point. In one embodiment, each color in a cluster has its own controllable driver so that the brightness of each color is a cluster is separately controllable. One or more optical sensors are arranged in the backlight, and the sensor signals are detected by processing circuitry to sense the light output of any LEDs that are energized in a single cluster. The measured white point and flux are compared to a stored target white point value and flux for that cluster. The currents to the RGB LEDs are then automatically adjusted to achieve the target level for each cluster. This process is applied to each cluster in sequence until the recalibration is complete. The recalibration takes place at various times over the lifetime of the backlight to offset the effects of LED degradation over time. Variations of this technique are also described.

    摘要翻译: 描述了用于LCD背光的LED光源,其随着时间的推移重新校准自身,使得在背光源的使用寿命期间保持背光源上的颜色和亮度均匀性。 背光包含红色,绿色和蓝色LED的簇,每个簇产生一个白点。 在一个实施例中,簇中的每个颜色具有其自己的可控驱动器,使得每个颜色的亮度是簇是单独可控的。 一个或多个光学传感器布置在背光源中,并且传感器信号由处理电路检测,以感测在单个群集中被激励的任何LED的光输出。 将测量的白点和通量与存储的目标白点值和该簇的通量进行比较。 然后自动调整到RGB LED的电流,以实现每个集群的目标级别。 该过程按顺序应用于每个簇,直到重新校准完成。 重新校准在背光源的寿命期间的不同时间进行,以抵消LED劣化随时间的影响。 还描述了该技术的变化。

    Magneto-optical storage medium
    26.
    发明申请
    Magneto-optical storage medium 审中-公开
    磁光存储介质

    公开(公告)号:US20070291625A1

    公开(公告)日:2007-12-20

    申请号:US10580500

    申请日:2004-11-18

    IPC分类号: G11B7/24

    摘要: The present invention relates to a storage medium (10) comprising an information layer (11) including transparent and non-transparent areas in which the information is stored, and a magnetizable layer (12) intended to contain at least one magnetized area, which is temporarily created when a light spot is transmitted by a corresponding transparent area of the information layer. The present invention also relates to a reading device for reading information on such a storage medium (10). Said reading device comprises an optical element (23) for generating an array of light spots from an input light beam (21), a light spot being intended to temporarily create the magnetized area in the magnetizable layer (12) when passing through the corresponding transparent area of the information layer (11), and a magnetic sensor (24) comprising an array of sensor elements for detecting the at least one magnetized areas.

    摘要翻译: 本发明涉及包括信息层(11)的存储介质(10),该信息层包括存储信息的透明区域和不透明区域,以及用于容纳至少一个磁化区域的可磁化层(12) 当信息层的相应透明区域发送光点时临时创建。 本发明还涉及一种用于读取这种存储介质(10)上的信息的读取装置。 所述读取装置包括用于从输入光束(21)产生光斑阵列的光学元件(23),当通过相应的透明物体(21)时,光点旨在临时产生可磁化层(12)中的磁化区域 信息层(11)的区域和包括用于检测至少一个磁化区域的传感器元件阵列的磁传感器(24)。

    Optical system
    27.
    发明申请
    Optical system 审中-公开
    光学系统

    公开(公告)号:US20070195676A1

    公开(公告)日:2007-08-23

    申请号:US10597077

    申请日:2005-01-13

    IPC分类号: G11B7/00

    摘要: An optical system comprising an optical element arranged on an optical axis in the path of a radiation beam. The optical element (2; 116; 202) comprises a birefringent material and has a non-planar face (4) through which the radiation beam passes. The optical system comprises a polarisation control system for controlling polarisation of the radiation beam such that the radiation beam has a polarisation which is non-uniform across a cross section (21; 24) taken perpendicular to the optical axis, the non-uniform polarisation having a distribution corresponding with a shape of the said non-planar face.

    摘要翻译: 一种光学系统,包括在辐射束的路径中布置在光轴上的光学元件。 光学元件(2; 116; 202)包括双折射材料并且具有辐射束通过的非平面(4)。 光学系统包括用于控制辐射束的偏振的偏振控制系统,使得辐射束具有在垂直于光轴截取的横截面(21; 24)上不均匀的偏振,非均匀偏振具有 与所述非平面的形状对应的分布。

    Optical pick-up unit
    28.
    发明申请
    Optical pick-up unit 审中-公开
    光学拾取单元

    公开(公告)号:US20070115782A1

    公开(公告)日:2007-05-24

    申请号:US10596649

    申请日:2004-12-13

    IPC分类号: G11B7/00

    摘要: A pick-up unit, an optical drive comprising such a pick-up unit, and a method of generating error-signals are described. Light reflected from an information carrier is injected into one or more VCSELs. The spatial intensity distribution of the emission from the VCSEL(s) is used for the generation of error signals in an optical pick-up unit. Alternatively, the relative timing for the switching of individual lasers of an array of VCSELs is used for the detection of error signals.

    摘要翻译: 描述拾取单元,包括这种拾取单元的光学驱动器和产生误差信号的方法。 从信息载体反射的光被注入到一个或多个VCSEL中。 来自VCSEL的发射的空间强度分布用于在光学拾取单元中产生误差信号。 或者,VCSEL的阵列的各个激光器的切换的相对定时被用于检测误差信号。

    System for reading data stored on an information carrier
    29.
    发明申请
    System for reading data stored on an information carrier 失效
    用于读取存储在信息载体上的数据的系统

    公开(公告)号:US20070104406A1

    公开(公告)日:2007-05-10

    申请号:US10571831

    申请日:2004-09-02

    IPC分类号: G02F1/295

    摘要: The invention relates to a system for reading data stored on an information carrier. The system comprises a waveguide (1203) which allows displacing laterally the different components in exploiting the reflection of the light beams between a first surface (1207) and a second surface (1208) of said wave guide (1203). Use: Optical storage

    摘要翻译: 本发明涉及用于读取存储在信息载体上的数据的系统。 该系统包括波导(1203),其允许在利用所述波导(1203)的第一表面(1207)和第二表面(1208)之间的光束的反射的情况下横向移动不同的部件。 用途:光存储

    Optical reading apparatus and method of reading data
    30.
    发明申请
    Optical reading apparatus and method of reading data 审中-公开
    光学读取装置和数据读取方法

    公开(公告)号:US20060153252A1

    公开(公告)日:2006-07-13

    申请号:US10543431

    申请日:2004-01-21

    IPC分类号: H01S3/10

    CPC分类号: G11B7/005 G11B7/13

    摘要: This apparatus having an optical head (15—FIG. 1)) for reading data stored in an optical carrier (1) comprises: a light source constituted by a first laser (50) or master laser for illuminating said carrier, an optical mounting (58) for directing the reflected light from said carrier to a detection branch (65) in which a non-linear optical element (80) is placed. This non-linear optical element (80) improves the signal to noise ratio by its non-linear characteristic before detection by the usual detector (75). The invention can be used for DVD players and/or recorders.

    摘要翻译: 具有用于读取存储在光学载体(1)中的数据的光学头(15 -FIG)的该装置包括:由第一激光器(50)或用于照亮所述载体的主激光器构成的光源,光学安装 58),用于将来自所述载体的反射光引导到放置非线性光学元件(80)的检测支路(65)。 该非线性光学元件(80)通过通常的检测器(75)检测之前的非线性特性提高了信噪比。 本发明可用于DVD播放器和/或记录器。