Optical night vision device with standard light intensifier
    2.
    发明授权
    Optical night vision device with standard light intensifier 失效
    光学夜视装置与标准光增强器

    公开(公告)号:US07863592B1

    公开(公告)日:2011-01-04

    申请号:US09455745

    申请日:1999-11-19

    申请人: Laurent Bignolles

    发明人: Laurent Bignolles

    IPC分类号: G01J5/00

    CPC分类号: G02B23/125

    摘要: The disclosure relates to a compact optical device, intended for use in a night vision telescope, that includes an objective, a standard light intensifier that rotates the image through 180° between its entry and its exit, an eyepiece, and four optical deflections, one in the objective and three in the eyepiece. The eyepiece, producing a single intermediate image between its entry and its exit, includes a combiner whose deflection angle α depends on its optical index n and the half-field θ of the device. The field width of the device is at least 40°. The invention is applicable notably to night vision binoculars for aircraft or helicopter pilots.

    摘要翻译: 本公开涉及一种旨在用于夜视望远镜的紧凑型光学装置,其包括物镜,使图像在其入口与出射口之间旋转180°的标准光增强器,目镜和四个光学偏转,一个 在目标和三目镜中。 目镜在其入口和出口之间产生单个中间图像,包括一个组合器,其偏转角α取决于其光学指数n和半场& 的设备。 设备的磁场宽度至少为40°。 本发明特别适用于飞机或直升机飞行员的夜视双筒望远镜。

    Process for separating dynamic and static components of a sequence of images
    3.
    发明授权
    Process for separating dynamic and static components of a sequence of images 失效
    用于分离图像序列的动态和静态分量的过程

    公开(公告)号:US06850630B1

    公开(公告)日:2005-02-01

    申请号:US09327353

    申请日:1999-06-08

    IPC分类号: G06T7/20 G06K9/00 H04N7/18

    CPC分类号: G06T7/20 G06T7/254

    摘要: A process for the separation of static and dynamic components of a sequence of images separated in time and taken under the same conditions. The process includes recording a first intensity of a first pixel in at least one area in the sequence of images, recording subsequent intensities for identical pixels to the first pixel in subsequent recorded images, and using pixel intensity sort criteria on intensity changes between the first intensity and the subsequent intensities to discriminate in the subsequent recorded images pixels showing minimal intensity changes from pixels showing larger intensity changes as the sequence process. The process includes forming from the pixels showing minimal intensity changes a part of the static component of the sequence of images.

    摘要翻译: 用于分离在相同条件下分离并在时间上分离的图像序列的静态和动态分量的过程。 该过程包括在图像序列中的至少一个区域中记录第一像素的第一强度,将随后的记录图像中的相同像素的后续强度记录到第一像素,以及使用像素强度分类标准来确定第一强度 以及随后的强度,以便在随后记录的图像中鉴别出显示出较小的强度变化的像素作为序列处理。 该过程包括从显示最小强度变化的像素形成图像序列的静态分量的一部分。

    Apparatus and method for measuring bit error rate in an OFDM communication system
    4.
    发明申请
    Apparatus and method for measuring bit error rate in an OFDM communication system 失效
    用于测量OFDM通信系统中误比特率的装置和方法

    公开(公告)号:US20020004920A1

    公开(公告)日:2002-01-10

    申请号:US09772207

    申请日:2001-01-29

    IPC分类号: G06F011/00

    摘要: Disclosed is an apparatus for measuring a bit error rate (BER) in an orthogonal frequency division multiplexing (OFDM) communication system. A transmitter includes a pilot pattern inserter for inserting a first reference pilot pattern in subchannels of input data, and an OFDM modulator for OFDM-modulating the reference pilot pattern-inserted transmission data. A receiver includes a pilot pattern detector for OFDM-demodulating a data symbol received in a frame unit and detecting only a pilot pattern, and a BER operator for comparing the demodulated pilot pattern with a second reference pilot pattern, detecting and accumulating the number of pilot errors, and measuring a bit error rate by dividing the accumulated number of the pilot errors by the number of total received pilot patterns.

    摘要翻译: 公开了一种用于测量正交频分复用(OFDM)通信系统中的误码率(BER)的装置。 发射机包括用于在输入数据的子信道中插入第一参考导频模式的导频模式插入器和用于OFDM调制参考导频模式插入传输数据的OFDM调制器。 接收机包括用于OFDM解调以帧单元接收的数据符号并仅检测导频模式的导频模式检测器,以及用于将解调的导频模式与第二参考导频模式进行比较的BER算子,检测和累加导频数 通过将导频误差的累积数除以总接收导频模式的数量来测量误码率。

    Copy-protected optical disk and protection process for such disk
    5.
    发明申请
    Copy-protected optical disk and protection process for such disk 失效
    复制保护光盘和这种磁盘的保护过程

    公开(公告)号:US20010024411A1

    公开(公告)日:2001-09-27

    申请号:US09779606

    申请日:2001-02-09

    申请人: THOMSON-CSF

    IPC分类号: G11B007/00

    摘要: The disclosure relates to an optical disk of the type including at least one spiral track on which information marks are written in sectors whose addresses are substantially sequential along the track, wherein said disk includes a copy protection zone (PZ) comprising two parts of equal size each including a series of sectors designated by identical addresses on each of the two parts, the data written in this zone being shared between the sectors of the two parts, each sector of the zone also carrying an identifier (D1, D2) characteristic of the part to which the sector belongs, and specific protection data to enable verification of the presence and constitution of said protection zone (PZ) and to enable use of the data written in this zone, at least part of said specific protection data being recorded on said disk. The invention is notably applicable to anti-piracy protection of CD-ROM and DVD-ROM type disks.

    摘要翻译: 本公开涉及一种类型的光盘,包括至少一个螺旋轨道,信息标记在其上沿着​​轨道基本上顺序地写入扇区中,其中所述盘包括复制保护区(PZ),该复制保护区包括两个相同大小的部分 每个部分包括在两个部分中的每一个上由相同地址指定的一系列扇区,写在该区域中的数据在两个部分的扇区之间共享,该区域的每个扇区还携带特征的标识符(D1,D2) 以及具体保护数据,以便能够验证所述保护区(PZ)的存在和构成,并且能够使用写在该区中的数据,至少部分所述特定保护数据被记录在所述保护区 磁盘。 本发明特别适用于CD-ROM和DVD-ROM型磁盘的防盗版保护。

    Method of exploration in azimuth for a radar, and radar implementing the method
    6.
    发明申请
    Method of exploration in azimuth for a radar, and radar implementing the method 失效
    雷达方位探测方法,以及实施该方法的雷达

    公开(公告)号:US20010019314A1

    公开(公告)日:2001-09-06

    申请号:US09729825

    申请日:2000-12-06

    申请人: THOMSON - CSF

    IPC分类号: G01S013/72 H01Q003/34

    摘要: The disclosure pertains to methods of fast exploration in azimuth by a surveillance radar antenna and to radars implementing such methods. The method consists in driving, at slow speed, an antenna comprising two elementary electronic scanning antennas installed back to back, simultaneously controlling the electronic aiming of each elementary electronic scanning antenna, switching over the microwave signal sent alternatively between the two elementary electronic scanning antennas and, before each rotation of the radar beam, initializing the electronic aiming of each elementary electronic scanning antenna at a determined angle nulli. The radar comprises an antenna with two elementary electronic scanning antennas and an aiming computer. Application especially to a sea patrol radar.

    摘要翻译: 本公开涉及通过监视雷达天线和执行这种方法的雷达快速探测方位的方法。 该方法包括以低速驱动包括背靠背安装的两个基本电子扫描天线的天线,同时控制每个基本电子扫描天线的电子瞄准,切换在两个基本电子扫描天线之间交替发送的微波信号,以及 在雷达波束的每次旋转之前,以确定的角度初始化每个基本电子扫描天线的电子瞄准。 该雷达包括具有两个基本电子扫描天线的天线和瞄准计算机。 特别适用于海上巡逻雷达。

    Bispectral electromagnetic wave detector
    8.
    发明授权
    Bispectral electromagnetic wave detector 失效
    双频电磁波探测器

    公开(公告)号:US6157020A

    公开(公告)日:2000-12-05

    申请号:US984950

    申请日:1997-12-04

    摘要: The disclosure relates to a bispectral electromagnetic wave detector including at least one first and one second overlaid plane active detector elements separated by a common layer, said first and second detector elements being sensitive to the different wavelengths; a first means of connection connected in common to said first and second detector elements, a second means of connection connected to said first detector element, and a third means of connection connected to said second detector element; means for applying successively a control voltage to each means of connection; and means connected to said first means of connection to detect a photoconduction current each time a control voltage is applied. The invention is used in applications requiring detection of electromagnetic waves in two bands of different wavelengths.

    摘要翻译: 本发明涉及一种双谱电磁波检测器,包括由公共层分离的至少一个第一和第二叠层有源检测器元件,所述第一和第二检测器元件对不同波长敏感; 连接到所述第一和第二检测器元件的第一连接装置,连接到所述第一检测器元件的第二连接装置和连接到所述第二检测器元件的第三连接装置; 用于连续地对每个连接装置施加控制电压的装置; 以及连接到所述第一连接装置的装置,以在每次施加控制电压时检测光电导电流。 本发明用于需要检测不同波长的两个波段中的电磁波的应用中。

    Method for controlling the navigation of a towed linear acoustic
antenna, and devices therefor
    9.
    发明授权
    Method for controlling the navigation of a towed linear acoustic antenna, and devices therefor 有权
    用于控制牵引的线性声学天线的导航的方法及其装置

    公开(公告)号:US6144342A

    公开(公告)日:2000-11-07

    申请号:US125026

    申请日:1998-08-13

    IPC分类号: G01V1/38 H01Q1/04 H01Q1/34

    CPC分类号: G01V1/3826

    摘要: A method for controlling the navigation of a towed linear acoustic antenna. Birds equipped with variable-incidence wings are fixed onto the antenna. Through a differential action, the wings allow the birds to be turned about the longitudinal axis of the antenna so that a hydrodynamic force oriented in any given direction about the longitudinal axis of the antenna is obtained. Power and control signals are transmitted between the antenna and the bird by rotary transformers. The bird is fixed to the antenna by a bore closed by a cover. The bird can be detached automatically as the antenna is raised so that the antenna can be wound freely onto a drum. This method allows the full control of the deformation, immersion and heading of the antenna.

    摘要翻译: PCT No.PCT / FR97 / 00263 Sec。 371日期1998年8月13日 102(e)日期1998年8月13日PCT提交1997年2月11日PCT公布。 公开号WO97 / 30361 日期1997年8月21日一种用于控制拖曳线性声学天线导航的方法。 装有可变发射翅膀的鸟类固定在天线上。 通过差动作用,翼片允许鸟类围绕天线的纵向轴线转动,以便获得围绕天线的纵向轴线在任何给定方向上定向的流体动力。 电力和控制信号通过旋转变压器在天线和鸟之间传输。 鸟通过盖子封闭的孔固定在天线上。 当天线升高时,鸟可以自动分离,以便天线可以自由地缠绕在滚筒上。 该方法可以完全控制天线的变形,浸入和航向。

    Fractional phase-locked loop coherent frequency synthesizer
    10.
    发明授权
    Fractional phase-locked loop coherent frequency synthesizer 失效
    分数锁相环相干频率合成器

    公开(公告)号:US6107843A

    公开(公告)日:2000-08-22

    申请号:US70157

    申请日:1998-04-30

    IPC分类号: H03L7/183 H03L7/197 H03D3/24

    CPC分类号: H03L7/1976

    摘要: Present-day single or multiple fractional phase-locked loop frequency synthesizers are not phase coherent for they use a digital accumulator modulo a number P with a variable increment K, whose state is a function of the history of the change in values that have been imposed on the increment. This lack of phase coherence rules out the use of these synthesizers in certain fields such as that of Doppler radars. A novel type of single or multiple fractional phase-locked loop frequency synthesizer that is coherent in phase is proposed herein. This type of synthesizer comprises one or more counters with an increment of one, having their rate set by the reference oscillator of the synthesizer and being used in phase memories to enable changes in the increment or increments following a change in the fractional division ratio at instants that are synchronous with the reference oscillator.

    摘要翻译: 现在的单个或多个分数锁相环频率合成器不是相位相干的,因为它们使用具有可变增量K的数字模数P的数字累加器,其状态是已经施加的值的变化的历史的函数 在增量上。 这种缺乏相位一致性排除了在某些领域(如多普勒雷达)中使用这些合成器。 本文提出了一种新颖类型的单相或多分相锁相环频率合成器,其相位相干。 这种类型的合成器包括一个或多个增量为1的计数器,其速率由合成器的参考振荡器设置,并且用于相位存储器,以使得在时刻的分数分数比的变化之后可以改变增量或增量 与参考振荡器同步。