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11. 发明授权

US4142208A System for automatically correcting the duty factor of the carrier wave arising from reading-out a data carrier 失效
标题翻译：用于自动校正从读出数据载体引起的载波的占空比的系统
公开(公告)号：US4142208A
公开(公告)日：1979-02-27
申请号：US816080
申请日：1977-07-15
申请人： Pierre Oprandi , Jean-Claude Lehureau , Claude Puech , Jean-Paul Peltier , Francois Le Carvennec , Jean-Pierre Lacotte , Claude Bricot
发明人： Pierre Oprandi , Jean-Claude Lehureau , Claude Puech , Jean-Paul Peltier , Francois Le Carvennec , Jean-Pierre Lacotte , Claude Bricot
IPC分类号： H04N5/922 , G11B7/00 , G11B7/005 , G11B23/00 , H04N5/931 , H04N5/94 , H04N5/76
CPC分类号： H04N5/931 , G11B23/0007 , G11B7/005 , H04N5/94
摘要： The present invention relates to the read-out of a data carrier having a track along which there is transcribed an angularly modulated carrier wave. In accordance with the present invention, there is provided a system for processing the read-out signal, which uses a feedback loop correcting the duty factor of a restored rectangular waveform when its value deviates from the value 0.5.
摘要翻译：本发明涉及一种具有轨道的数据载体的读出，沿着该磁道转录有角度调制的载波。根据本发明，提供了一种用于处理读出信号的系统，当系统的值偏离值0.5时，该系统使用校正已恢复矩形波形的占空系数的反馈环路。

12. 发明授权

US4079248A Optical focussing sensor 失效
标题翻译：光学聚焦传感器
公开(公告)号：US4079248A
公开(公告)日：1978-03-14
申请号：US726473
申请日：1976-09-24
申请人： Jean-Claude Lehureau , Claude Bricot
发明人： Jean-Claude Lehureau , Claude Bricot
IPC分类号： G03B13/36 , G02B7/28 , G02B7/34 , G02B27/16 , G11B7/09 , G01J1/20
CPC分类号： G02B27/16 , G02B7/34 , G11B7/0908 , G11B7/0916 , G11B7/0917
摘要： The invention relates to focussing sensors for measuring the deviation between the point of convergence of a beam of radiant energy and the surface of an object receiving this beam. According to the invention, a degree of asymmetry is first introduced into this beam, after which the image of this convergence point if formed on photoelectric sensors enabling the distortions of this image to be measured. These sensors supply signals which are dependent upon said deviation and enable it to be measured.This invention relates to optical focussing sensors by which it is possible to measure the focussing deviation of a beam of radiant energy of which the point of convergence has to be kept in coincidence with the surface of an object which it is desired to illuminate by a spot. An optical sensor of this type may be used in the production of an optical reader intended to read for example the video information recorded in the form of lines of variable length and spacing forming a track on the surface of a support such as a disc.On account of the high density of information thus recorded, the elements characteristic of the information are extremely small and, in addition, it is necessary for the support to be moved past the reading head, which comprises a projection lens, at high speed. The focussing precision of this lens has to be extremely high to obtain a reading spot of sufficiently small dimensions to be able to resolve these characteristic elements. Now, the instability in the movement of the support, in particular along the axis of the convergent reading beam which defines the reading spot, exceeds the limits of this precision to a considerable extent. Accordingly, it is necessary to use elements for controlling the position of the convergence point which enable fine coincidence to be obtained in spite of this instability. In particular, a focussing control loop is used for keeping intact the sharpness of the reading spot.It is known that the error signal required for the operation of the focussing control loop can be obtained by using an auxiliary light beam which, on emerging from the projection lens, forms an inclined parallel beam of which the position, after reflection at the support, followed by another passage through the lens, is detected by photoelectric cells which supply said error signal.It is also known (French Pat. No. 74 01283) to use a stigmatic cylindrical lens which gives a reading beam of which the spot on the support is only substantially circular at the exact focussing point. Beyond this point, the spot has an elliptical shape of which the extension increases with the distance from the focussing spot and of which the orientation is different according to whether the support is situated in front of or behind the circular focussing point. A photoelectric cell with four quadrants enables the change in the shape of the reading spot to be detected and supplies a corresponding electrical signal.Although these solutions function correctly, they require auxiliary means of which the cost is appreciable and their adjustment fairly delicate.In accordance with the present invention, it is provided an optical focussing sensor for measuring the deviations between a reflecting surface and the focussing point of an incident beam formed with coherent light rays, said sensor comprising:A projection lens for focussing said incident beam at said focussing point nearly said reflecting surface, and focussing in an image point the reflected beam delivered from said incident beam by said reflecting surface;means for introducing an asymmetry into the spatial distribution of said rays at any point of their path which is not situated at a convergence point; andphotoelectric means for intercepting said reflected beam, measuring said asymmetry, and delivering an error signal; said photoelectric means being located at a point where is located said image point when said focussing point is located onto said reflecting surface, whereby said error signal is null when said deviation is null.
摘要翻译：本发明涉及用于测量辐射能束的收敛点与接收该光束的物体的表面之间的偏差的聚焦传感器。根据本发明，首先将不对称程度引入到该光束中，之后如果形成在能够测量该图像的失真的光电传感器上，则该会聚点的图像。这些传感器提供依赖于所述偏差的信号，并使其能被测量。

13. 发明授权

US4059841A Optical read-out system including asymetrical beam intensity and four detector cells 失效
标题翻译：光学读出系统包括非对称光束强度和四个检测器单元
公开(公告)号：US4059841A
公开(公告)日：1977-11-22
申请号：US726161
申请日：1976-09-24
申请人： Claude Bricot , Jean-Claude Lehureau
发明人： Claude Bricot , Jean-Claude Lehureau
IPC分类号： H04N5/85 , G02B7/28 , G02B27/00 , G11B7/005 , G11B7/09 , G11B7/12 , H04N5/76
CPC分类号： G11B7/0901 , G11B7/005 , G11B7/12
摘要： The invention relates to the optical reading of a support comprising a track along which is arranged a series of information items which optically translate a carrier wave angularly modulated by the information. The read-out system uses a single lens for projecting a quasi-punctiform spot onto the support; a photodetector comprising four cells arranged in a square and asymmetrical illumination of the lens to ensure detection of the information and simultaneous supply of defocussing and tracking deviation signals.
摘要翻译：本发明涉及一种载体的光学读取装置，其包括轨道，轨道沿着轨道布置了一系列信息项目，用于光学地转换由信息进行角度调制的载波。读出系统使用单个透镜将准点状斑点投影到支撑件上; 一个光电检测器，包括四个单元，其布置在透镜的正方形和不对称照明中，以确保信息的检测和同时提供散焦和跟踪偏差信号。

14. 发明申请

US20090013776A1 METHOD AND DEVICE FOR PROTECTING AN AIRCRAFT AGAINST CLEAR AIR TURBULENCE 失效
标题翻译：保护航空器清洁空气湍流的方法和装置
公开(公告)号：US20090013776A1
公开(公告)日：2009-01-15
申请号：US12055696
申请日：2008-03-26
申请人： Herve Barny , Jean-Claude Lehureau , Patrick Feneyrou
发明人： Herve Barny , Jean-Claude Lehureau , Patrick Feneyrou
IPC分类号： G01P5/00 , G01P5/10 , G01N21/47
CPC分类号： G01W1/00 , G01W2001/003
摘要： The invention relates to a method of protecting aircraft in flight against clear air turbulence (CAT). Consider an aircraft occupying a position P and moving horizontally at a speed V, a plane PH0 being the horizontal plane passing through P. According to the invention, the method includes performing at least one pair of evaluations of air temperature TB, TC at two points B, C which have positions that are symmetrical relative to the plane PH0. At least one pair of horizontal air speed evaluations are performed VHB, VHC at the two points B, C; An air temperature gradient is determined; A horizontal air speed gradient is determined; An index signifying a presence of CAT is determined; The preceding steps are repeated; A trend is analyzed over time of the index.
摘要翻译：本发明涉及一种在飞行中保护飞机免受空气湍流（CAT）的保护的方法。考虑占据位置P并以速度V水平移动的飞行器，平面PH0是通过P的水平面。根据本发明，该方法包括在两点执行至少一对空气温度TB，TC的评估 B，C具有相对于平面PH0对称的位置。在两点B，C处执行至少一对水平空气速度评估VHB，VHC; 确定空气温度梯度; 确定水平空气速度梯度; 确定表示CAT存在的指标; 重复上述步骤; 随着时间的推移分析了这一趋势。

15. 发明授权

US07460456B2 Radial control method for a device for reproducing information of an optical disk, and reproduction device for carrying out said method 失效
标题翻译：用于再现光盘信息的装置的径向控制方法，以及用于执行所述方法的再现装置
公开(公告)号：US07460456B2
公开(公告)日：2008-12-02
申请号：US10510201
申请日：2003-03-25
申请人： Joseph Colineau , Jean-Claude Lehureau
发明人： Joseph Colineau , Jean-Claude Lehureau
IPC分类号： G11B7/00
CPC分类号： G11B7/0906
摘要： The invention relates to a radial slaving method and to a reproduction device implementing it for optical discs.In an optical head of a conventional reproduction device using a four-quadrant detector with four photodiode is distributed on either side of a direction parallel to the axis of the track, the individual signals of the photodiodes (d1 to d4) are combined in order to obtain read signals along the two diagonals (diag1, diag2) by subtraction (21, 22).A phase comparison signal circuit (100) makes it possible to construct a radial error signal (Sr) by measuring the phase shift of the diagonal read signals.The invention applies in particular to phase discs with slightly phase-shifting marks.
摘要翻译：本发明涉及一种径向从动方法和一种实现光盘的再现装置。在使用具有四个光电二极管的四象限检测器的常规再现装置的光头中分布在与轨道的轴平行的方向的任一侧上，将光电二极管（d1至d4）的各个信号合并，以便通过减法获得沿着两个对角线（diag1，diag2）的读取信号（21,22）。相位比较信号电路（100）可以通过测量对角线读信号的相移来构造径向误差信号（Sr）。本发明特别适用于具有轻微相移标记的相位盘。

16. 发明授权

US07149173B2 Medium for recording optically readable data, method for making same and optical system reproducing said data 有权
标题翻译：用于记录光学可读数据的介质，其制造方法以及再现所述数据的光学系统
公开(公告)号：US07149173B2
公开(公告)日：2006-12-12
申请号：US10399038
申请日：2001-10-17
申请人： Jean-Claude Lehureau
发明人： Jean-Claude Lehureau
IPC分类号： G11B7/135 , G11B7/24
CPC分类号： G11B7/24038 , G11B7/005 , G11B7/263 , G11B2007/0013
摘要： The invention concerns a recording medium for optically readable data of the multilayer type, a method for making same and an optical system for reproducing said data for reading the medium.The medium (Sb) comprises a stack of layers (C1 to CN) whereof the interfaces constitute planes (P1 to PN) bearing slightly phase-shifting information elements. Said planes generate a relatively significant disturbance of the transmitted beam while diffracting only a very small part of the light passing through them. The reading beam (FI) is focused on the bearing plane and reading is performed by transmission. The disturbances caused by the neighboring defocused layers are eliminated by far field detection of only the low spatial frequencies in the transmitted beam.The invention is particularly useful for very high capacity data optical storage.
摘要翻译：本发明涉及一种用于多层型光学可读数据的记录介质，其制造方法以及用于再现用于读介质的数据的光学系统。介质（Sb）包括层（C 1至CN）的堆叠，其中接口构成具有轻微相移信息元素的平面（P 1至PN）。所述平面对透射光束产生相对显着的干扰，同时仅衍射通过它们的极小部分光。读取光束（FI）聚焦在轴承平面上，并通过传输进行读取。由相邻散焦层引起的干扰通过仅在发射波束中的低空间频率的远场检测来消除。本发明对于非常高容量的数据光学存储特别有用。

17. 发明申请

US20060062097A1 Radial control method for a device for reproducing information of an optical disk, and reproduction device for carrying out said method 失效
标题翻译：用于再现光盘信息的装置的径向控制方法，以及用于执行所述方法的再现装置
公开(公告)号：US20060062097A1
公开(公告)日：2006-03-23
申请号：US10510201
申请日：2003-03-25
申请人： Joseph Colineau , Jean-Claude Lehureau
发明人： Joseph Colineau , Jean-Claude Lehureau
IPC分类号： G11B7/00
CPC分类号： G11B7/0906
摘要： The invention relates to a radial slaving method and to a reproduction device implementing it for optical discs. In an optical head of a conventional reproduction device using a four-quadrant detector with four photodiode is distributed on either side of a direction parallel to the axis of the track, the individual signals of the photodiodes (d1 to d4) are combined in order to obtain read signals along the two diagonals (diag1, diag2) by subtraction (21, 22). A phase comparison signal circuit (100) makes it possible to construct a radial error signal (Sr) by measuring the phase shift of the diagonal read signals. The invention applies in particular to phase discs with slightly phase-shifting marks.
摘要翻译：本发明涉及一种径向从动方法和一种实现光盘的再现装置。

18. 发明授权

US06778669B1 Quantum encryption device 失效
标题翻译：量子加密设备
公开(公告)号：US06778669B1
公开(公告)日：2004-08-17
申请号：US09448453
申请日：1999-11-24
申请人： Jean-Claude Lehureau
发明人： Jean-Claude Lehureau
IPC分类号： H04K100
CPC分类号： H04L9/0852 , H04L2209/08
摘要： A quantum encryption device comprises a transmitter and a receiver between which an encrypted piece of information is transmitted. The transmitter comprises at least means to send a first packet of photons and an information photon to the receiver, the appearance of the information photon following the packet being lagged by a period of time &tgr; according to a law of probability. The transmitter also comprises means for the encoding of the information photon. The receiver comprises at least means for the encoding of a second packet of photons coming from the first packet and substantially lagged by the period of time &tgr; with respect to this packet, and interference means to make an information photon interfere with the second packet of photons. These interference means provide a packet of photons to create a quantity of photons substantially equal to ±2 times the variance of the noise due to the second packet. The invention can be applied to the industrial-scale making of encryption systems.
摘要翻译：量子加密装置包括发送器和接收器，在该接收器之间发送加密的信息。发射机包括至少将光子的第一分组和信息光子发送到接收机的装置，根据概率定律，在分组滞后一段时间τ之后的信息光子的出现。发射机还包括用于编码信息光子的装置。接收机包括至少用于编码来自第一分组的光子的第二分组并且相对于该分组基本上滞后于时间τ的装置，并且使信号光子干扰第二光子分组的干扰。这些干扰意味着提供一个光子分组，以产生基本上等于由于第二分组引起的噪声变化的±2倍的光子的量。本发明可应用于加密系统的工业规模化。

19. 发明授权

US06577561B2 Anti-chipping recording disc, reading method and recording head 有权
标题翻译：防碎片记录盘，读取方式和记录头
公开(公告)号：US06577561B2
公开(公告)日：2003-06-10
申请号：US09308255
申请日：1999-05-25
申请人： François-Xavier Pirot , Jean-Claude Lehureau
发明人： François-Xavier Pirot , Jean-Claude Lehureau
IPC分类号： G11B7085
CPC分类号： G11B23/281 , G11B7/007 , G11B20/00086 , G11B20/00586 , G11B20/00601
摘要： An anti-piracy recording disk. The disk includes a main recording track which has interruptions or changes of turn. This gives rise to non-sequential reading and therefore to information which is difficult to access. The copying of such a disk by conventional means is very difficult making it possible to easily detect counterfeits or to render any copy unusable.
摘要翻译：防盗版录像盘。磁盘包括具有中断或转弯变化的主记录磁道。这导致非顺序读取，因此导致难以访问的信息。通过常规方式复制这种盘是非常困难的，使得可以容易地检测到伪造品或使任何副本不可用。

20. 发明授权

US06288805B1 Holographic projection screen and method of production 失效
标题翻译：全息投影屏和生产方法
公开(公告)号：US06288805B1
公开(公告)日：2001-09-11
申请号：US08596135
申请日：1996-02-15
申请人： Jean-Pierre Huignard , Cécile Joubert , Jean-Claude Lehureau , Brigitte Loiseaux
发明人： Jean-Pierre Huignard , Cécile Joubert , Jean-Claude Lehureau , Brigitte Loiseaux
IPC分类号： G03H100
CPC分类号： G03B21/60 , G02B5/32 , G03B21/62 , G03H1/0256
摘要： A holographic projection screen for large screen projection and back projection with a liquid crystal projector. The screen includes at least one layer made of a photosensitive material in which at least one index grating may be recorded by an interference of an optical recording wave with an optical object wave. The thickness of the layer is equal to or greater than n0&Lgr;2/2&pgr;, where n0 is the average index of the photosensitive material, &Lgr; is the average spacing of the index grating and &lgr; is the recording wavelength.
摘要翻译：一种用于大屏幕投影和背投的全息投影屏幕，配有液晶投影机。该屏幕包括至少一层由光敏材料制成的层，其中至少一个折射光栅可通过光学记录波与光学物体波的干涉被记录。层的厚度等于或大于n0LAMBD2 / 2pi，其中n0是感光材料的平均折射率，LAMBD是折射率光栅的平均间距，lambd是记录波长。

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