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公开(公告)号：US06396866B1
公开(公告)日：2002-05-28
申请号：US09071574
申请日：1998-05-01
IPC分类号： H04L2730
CPC分类号： H04L27/2278 , H04L2027/0095
摘要： A method of acquiring a communications signal is provided. The method includes the steps of storing a forward chirp sync segment (106) of an auto-correlating forward chirp sync (102) and storing a reverse chirp sync segment (108) of a symmetric auto-correlating reverse chirp sync (104). A header comprising of either a forward chirp sync FCS (102) or a reverse chirp sync RCS (104), a predetermined number of data blocks comprising a data frame (308), and the symmetric auto-correlating trailer is received. The header, the data blocks, and the symmetric trailer are susceptible to frequency error. The method correlates the FCS segment (106) with the auto-correlating FCS (102) to provide a FCS correlation signal (312) and correlates the RCS segment (104) with the auto-correlating RCS (108) to provide a RCS correlation signal (314). The method determines the frequency error, symbol timing, and frame timing based upon the FCS correlation signal (312) and the RCS correlation signal (314).
摘要翻译： 提供一种采集通信信号的方法。 该方法包括存储自相关前向线性调频脉冲同步（102）的前向啁啾同步段（106）并存储对称自相关反向啁啾同步（104）的反向啁啾同步段（108）的步骤。 包括前向啁啾同步FCS（102）或反向啁啾同步RCS（104）的标题，接收包括数据帧（308）的预定数量的数据块和对称的自动相关预告。 报头，数据块和对称报尾易受频率误差的影响。 该方法将FCS段（106）与自相关FCS（102）相关联以提供FCS相关信号（312），并将RCS段（104）与自相关RCS（108）相关联以提供RCS相关信号 （314）。 该方法基于FCS相关信号（312）和RCS相关信号（314）确定频率误差，符号定时和帧定时。
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2.发明授权
公开(公告)号：US6167024A
公开(公告)日：2000-12-26
申请号：US42928
申请日：1998-03-17
CPC分类号： H04J14/005 , H04J14/007
摘要： An orthogonal pilot tone servo controller provides a servo control loop for each tap in a delay line processor where each servo acquires its independence from the other tap's servos utilizing an orthogonal code set modulated on top of the existing tap values. The orthogonal codes are attenuated in amplitude such that the code sets are transparent to the processed signals of interest, but the code's length enables each tap's servo controller to independently recover the tap's state from the aggregate of signals and codes through processing gain realized in each loop's recovery circuit. A plurality of taps can be thus be servo controlled simultaneously, providing for extremely wide bandwidth processes which can be performed accurately with digital controls.
摘要翻译： 正交导频音调伺服控制器为延迟线处理器中的每个抽头提供伺服控制回路，其中每个伺服器利用在现有抽头值顶部调制的正交码集来获取其与另一抽头的伺服的独立性。 正交码在幅度上衰减，使得码集对于所处理的感兴趣的信号是透明的，但是代码的长度使得每个抽头的伺服控制器能够从信号和代码的集合中独立地恢复抽头的状态，通过每个循环中实现的处理增益 恢复电路。 因此，可以同时伺服控制多个抽头，从而提供可以用数字控制精确地执行的极宽带宽处理。
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公开(公告)号：US5505313A
公开(公告)日：1996-04-09
申请号：US107813
申请日：1993-11-05
申请人： Martin P. Smith , Robin W. Smith
发明人： Martin P. Smith , Robin W. Smith
CPC分类号： B07C5/3427 , B07C5/366 , G01N21/65 , G01N21/87
摘要： In order to sort ore from associated mineral material, a method and apparatus of classifying an object is provided, the method including feeding the object along a feed path, irradiating the object with infra-red radiation of a first wavelength, the radiation of the first wavelength being focussed onto an irradiation zone intersecting the feed path, the irradiation zone having a length in the vertical plane substantially greater than its width in the vertical plane. The intensity of radiation emitted by the object at at least one second wavelength different from the first wavelength is examined, the second wavelength being characteristic of a first class of object or the ore to be sorted from the mineral, whereby the classification of the object may be derived.
摘要翻译： PCT No.PCT / GB92 / 00295 Sec。 371日期：1993年11月5日 102（e）日期1993年11月5日PCT提交1992年2月20日PCT公布。 第WO92 / 14556号公报 1992年9月3日，为了对相关矿物材料的矿石进行分类，提供了一种对物体进行分类的方法和装置，该方法包括沿着进给路径进给物体，用第一 第一波长的辐射被聚焦到与馈送路径相交的照射区域上，照射区域在垂直平面中的长度大致大于其在垂直平面中的宽度。 检查由物体在与第一波长不同的至少一个第二波长处发射的辐射的强度，第二波长是第一类物体的特征或从矿物中分选的矿石，由此物体的分类可以 被派生。
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公开(公告)号：US5536943A
公开(公告)日：1996-07-16
申请号：US341532
申请日：1995-02-13
CPC分类号： G01N21/87 , G01N21/255 , G01N21/33 , G01N2021/3133
摘要： In order to examine an object with radiation and measure the intensity of radiation used to illuminate the object, radiation is directed onto a wavelength selective mirror (31). In a first position, the mirror (31) reflects the illuminating radiation to a beam splitter (30) which passes the radiation to a detector (34). In a second position the mirror (31) directs the radiation to an object (33), radiation of the selected wavelength emanating from the object being reflected by the mirror via beam splitter (30) to the detector (34). The mirror (31) is rotated between the first and second position. In order to classify a diamond as natural or synthetic, a first signal is derived dependent upon the intensity of ultra-violet radiation transmitted by the diamond at 254 nm, and a second signal is derived dependent upon the intensity of radiation transmitted by the diamond at 365 nm and the diamond is classified as being definitely natural if the first signal is substantially greater than the second signal.
摘要翻译： PCT No.PCT / GB93 / 01024 Sec。 371日期1995年2月13日 102（e）日期1995年2月13日PCT提交1993年5月19日PCT公布。 出版物WO93 / 23742 日期为1993年11月25日。为了用辐射检查物体并测量用于照射物体的辐射强度，辐射被引导到波长选择镜（31）上。 在第一位置，反射镜（31）将照射辐射反射到将辐射传递到检测器（34）的分束器（30）。 在第二位置，反射镜（31）将辐射引导到物体（33），从物体发出的选定波长的辐射被反射镜经由分束器（30）反射到检测器（34）。 反射镜（31）在第一和第二位置之间旋转。 为了将钻石分类为天然或合成的，第一信号取决于金刚石在254nm处发射的紫外线辐射的强度，第二信号取决于钻石发射的辐射强度， 365nm，并且如果第一信号基本上大于第二信号，则将金刚石分类为绝对自然。
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5.发明授权
公开(公告)号：US4645922A
公开(公告)日：1987-02-24
申请号：US784623
申请日：1985-10-04
CPC分类号： G01N21/474 , B07C5/3425 , G01N2201/065
摘要： In order to color sort objects such as peas or sweets, they are dropped in succession through two integrating spheres. In the first sphere, the object absorbs infra-red radiation and the peak reduction in infra-red flux is detected in order to provide a signal responsive to the size of the object. In the second sphere, the object is illuminated with white light and the peak reduction in flux is detected by at least three detectors for three colors determined by filters. To make the illumination more uniform in the sphere, there is a step around the sphere almost half way down, with light sources equi-spaced around the step. The size signal is divided into the respective color signal in a micro-processor to produce a size-corrected color signal.
摘要翻译： 为了对豌豆或糖果进行颜色分类，它们通过两个整合球体相继掉落。 在第一个球体中，物体吸收红外辐射，并检测红外线通量的峰值降低，以便提供响应物体大小的信号。 在第二个球体中，物体被白光照射，通过至少三个由滤光器确定的颜色的检测器检测通量的峰值降低。 为了使照明在球体中更加均匀，围绕球体的方向几乎一半下降，光源围绕台阶等距。 在微处理器中将尺寸信号分成相应的颜色信号以产生尺寸校正的颜色信号。
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公开(公告)号：US5628410A
公开(公告)日：1997-05-13
申请号：US547896
申请日：1995-10-24
申请人： Martin P. Smith , Robin W. Smith
发明人： Martin P. Smith , Robin W. Smith
CPC分类号： B07C5/3427 , B07C5/366 , G01N21/65 , G01N21/87
摘要： This invention relates to a method and apparatus for classifying or sorting objects by projecting and irradiating an object through an irradiation zone and then examining the radiation emitted by the object to determine its class, the irradiating zone having a length in a vertical plane greater than its width where its length to width ratio is greater than 5:1.
摘要翻译： 本发明涉及一种用于通过照射区域投影和照射物体然后检查由物体发射的辐射以确定其类别来对物体进行分类或分类的方法和装置，照射区域的垂直平面中的长度大于其 其长宽比大于5：1的宽度。
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公开(公告)号：US5603414A
公开(公告)日：1997-02-18
申请号：US343525
申请日：1995-01-25
CPC分类号： G01N33/381 , G01N23/14
摘要： In order to provide secure and simple detection of diamonds when prospecting, a rock sample is reduced to powder particles which are automatically checked to see if they contain diamond particles (30) by processing an image of X-radiation transmitted through a layer of the particles. The image may be processed by comparing it with a further image of visible light transmitted by the layer of particles.
摘要翻译： PCT No.PCT / GB93 / 01127 Sec。 371 1995年1月25日第 102（e）日期1995年1月25日PCT提交1993年5月28日PCT公布。 公开号WO93 / 24833 日期1993年12月9日为了在勘探时提供钻石的安全和简单的检测，岩石样品被还原成粉末颗粒，通过处理透过X射线的图像，自动检查它们是否含有金刚石颗粒（30） 一层颗粒。 可以通过将图像与由颗粒层透射的可见光的另一图像进行比较来处理图像。
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公开(公告)号：US5076698A
公开(公告)日：1991-12-31
申请号：US432912
申请日：1989-11-07
申请人： Martin P. Smith , Robin W. Smith
发明人： Martin P. Smith , Robin W. Smith
CPC分类号： G01B11/2522
摘要： In order to determine the external profile of a diamond, particularly a large diamond which has re-entrant features, an elongate and thin beam is projected onto the diamond while the diamond is rotated about an axis normal to the beam; an imaging system is used to image from one side the line along which the beam strikes the diamond, this image being formed on a diffraction grating which is tilted in accordance with the Scheimpflug condition and in order to employ the first order beam of the diffraction grating. The image on the diffraction grating is viewed with a second imaging system. Furthermore, there may be a substantial improvement in light capture. The arrangement is applicable to systems other than those for determining profile.
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公开(公告)号：US5353112A
公开(公告)日：1994-10-04
申请号：US859497
申请日：1992-06-15
申请人： Martin P. Smith
发明人： Martin P. Smith
CPC分类号： G01N1/286 , G01N21/4738 , G01N2021/4769 , G01N2203/0085
摘要： Apparatus for optical inspection of particulate material such as diamond abrasive comprises a body (1), an open sample container (25) which can rise and fall in the body, a reference member (71) above the container, mounted in a removable compaction head (9) of which the height relative to the body is fixed, and an optical inspection head (11) mountable on the body in place of composition head. The container is raised into contact with the reference member so that the surface of the sample is levelled and placed at a predetermined height. The compaction head is then removed and replaced by the optical inspection head. Consequently, the sample surface is always presented to the optical inspection head in a predetermined relationship and in particular at a predetermined height.
摘要翻译： PCT No.PCT / GB91 / 00109 Sec。 371日期：1992年6月15日 102（e）日期1992年6月15日PCT 1991年1月25日PCT PCT。 公开号WO91 / 11699 日期：1981年8月8日。用于光学检查诸如金刚石磨料的颗粒材料的装置包括主体（1），可以在体内上升和下落的开放样品容器（25），容器上方的参考构件 ，其安装在相对于主体的高度相对于其固定的可移除的压实头（9）中，以及光学检查头（11），可安装在身体上而不是组合头。 容器升高与参考构件接触，使得样品的表面平整并放置在预定高度。 然后将压实头移除并由光学检查头代替。 因此，样品表面总是以预定的关系，特别是在预定的高度呈现给光学检查头。
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10.发明授权
公开(公告)号：US4663522A
公开(公告)日：1987-05-05
申请号：US784622
申请日：1985-10-04
CPC分类号： B07C5/366 , B07C5/3425 , G01N21/59 , G01N2201/065
摘要： The apparatus measures the transmission of light in successive falling objects. A beam is projected, wide enough to bathe all the facing surface of the object. An integrating sphere is on the other side of the object and its inlet and outlet apertures provide cut-offs so that only a hollow cone of flux scattered from the object is trapped in the integrating sphere, this flux being measured by a detector. The detector is connected to a micro-processor whose output is a measure of the clarity of the object. When the object is not in the beam, the beam falls on a detector so that the reduction in flux sensed by the detector is a measure of the projected area of the object. The micro-processor divides the signal from the detector by the reduction in flux, thereby making the output substantially independent of the size of the object.
摘要翻译： 该装置测量连续落下的物体中的光的传播。 投射一个光束，宽到足以洗涤物体的所有面对表面。 积分球位于物体的另一侧，其入口和出口孔提供切口，使得只有从物体散射的中空锥体的锥体被捕获在积分球中，该通量由检测器测量。 检测器连接到微处理器，其输出是物体清晰度的度量。 当物体不在光束中时，光束落在检测器上，使得由检测器感测的通量的减小是物体的投影面积的量度。 微处理器通过通量的减少来分离来自检测器的信号，从而使输出基本上与物体的尺寸无关。
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