公开(公告)号：US4847769A

公开(公告)日：1989-07-11

申请号：US816207

申请日：1986-01-06

申请人： Peter J. Reeve

发明人： Peter J. Reeve

IPC分类号： B62D1/24 ,  G01C21/00 ,  G01C21/12 ,  G05D1/02

CPC分类号： G05D1/0272 ,  G01C21/12 ,  G05D1/024

摘要： An automated vehicle includes a navigation system which carries out a dead reckoning calculation of the vehicle's position based on inputs from sensors on the motion of a steering wheel in the preceding time interval, .DELTA.t. Parameters of the system including the heading angle, the spatial position x,y the angular drift in the steering angle .alpha., a crabbing angle .beta. and a variation 1.sub.dm in steering wheel radius are updated by the addition of the product of a Kalman gain calculated by computer and an error signal produced each time an observation is made by laser bearing finding equipment on the vehicle.

摘要翻译： 自动车辆包括导航系统，该导航系统基于来自传感器的在前一时间间隔DELTA t中的方向盘的运动的输入来执行车辆位置的航位推算计算。 包括方位角，空间位置x，y在转向角α中的角度偏移，螃蟹角β和方向盘半径中的变化1dm的系统的参数通过加上由Kalman增益计算的乘积的乘积来更新 每当通过车辆上的激光测轴设备进行观察时，产生计算机和误差信号。

公开(公告)号：US4838659A

公开(公告)日：1989-06-13

申请号：US124100

申请日：1987-12-10

申请人： Robert L. Van Ewyk ,  Ingrid M. O'Connor ,  Alan Mosley ,  Francis Jones ,  Christopher Blackburn ,  John Griffiths

发明人： Robert L. Van Ewyk ,  Ingrid M. O'Connor ,  Alan Mosley ,  Francis Jones ,  Christopher Blackburn ,  John Griffiths

IPC分类号： C09B3/14 ,  C09B3/18 ,  C09K19/60 ,  G02F1/13 ,  G02F1/137

CPC分类号： G02F1/13762 ,  C09B3/14 ,  C09K19/60 ,  C09K19/606 ,  Y10T428/1041

摘要： Pleochroic fluorescent dyes of the general formula I: ##STR1## in which R is hydrogen or an aliphatic hydrocarbon radical containing not more than 20 carbon atoms and --CH.sub.2 -- between carbon atoms or adjacent to the bicyclo[2.2]octane residue may be replaced by --O-- may be dissolved in liquid crystal host material to form displays which are caused to fluoresce by incident low-energy ultraviolet initially absorbed by the liquid cyrstal host material and then internally transferred to the fluorophor. These dyes have greater stability to ultraviolet than other perylenedicarboxylic diesters while possessing good fluorescent properties and satisfactory order parameters. In formula I, R is preferably a straight or branched alkyl, and/or cycloalkyl group having 3 to 10 carbon atoms, preferably 5 to 7 carbon atoms. The liquid cyrstal host material preferably contains an energy-transfer agent such as a 4-substituted 4"-cyanoterphenyl. The 4-pentyl- and 4-propyl- bicyclo[2.2.2]oct-1-yl perylenedicarboxylates of Formula I and solutions of these dyes in nematic liquid crystal host "E7" (a mixture based on cyanobiphenyls containing 8% 4-pentyl-4"-cyanoterphenyl) are described in examples.

摘要翻译： PCT No.PCT / GB87 / 00196 Sec。 371日期1987年12月10日 102（e）1987年12月10日日，1987年3月20日PCT PCT。 公开号WO87 / 05617 日本公报1987年9月24日。通式I的双色荧光染料：其中R是氢或含有不超过20个碳原子的脂族烃基和碳原子之间的-CH 2 - 或邻近 双环[2.2]辛烷残基可以被-O-取代，可以溶解在液晶主体材料中，形成显示器，这些显示器最初被液态硅藻土主体材料吸收的入射低能量紫外线发出荧光，然后内部转移到荧光体 。 这些染料具有比其它苝二羧酸二酯更高的紫外线稳定性，同时具有良好的荧光性能和令人满意的顺序参数。 在式I中，R优选为具有3至10个碳原子，优选5至7个碳原子的直链或支链烷基和/或环烷基。 液体硅藻土主体材料优选含有能量转移剂，例如4-取代的4“ - 氰基苯基。 式I的4-戊基 - 和4-丙基 - 双环[2.2.2]辛-1-基辛基-1-基和这些染料在向列型液晶宿主“E7”中的溶液（基于含有8％4-戊基的氰基联苯 -4“ - 氰基苯基）在实施例中描述。

公开(公告)号：US4832462A

公开(公告)日：1989-05-23

申请号：US62159

申请日：1987-06-12

申请人： Michael G. Clark ,  Alan Mosley ,  Carolyn Bowry ,  Beatrice M. Nicholas

发明人： Michael G. Clark ,  Alan Mosley ,  Carolyn Bowry ,  Beatrice M. Nicholas

IPC分类号： G02F1/137 ,  G02F1/1337 ,  G02F1/141

CPC分类号： G02F1/141

摘要： A liquid crystal device comprises a ferroelectric smectic phase liquid crystal enclosed between two surfaces, the surfaces being such that the directors of the liquid crystal adjacent the surfaces are not parallel to the surfaces. The directors adjacent one of the surfaces are not parallel to the directors adjacent the other surface, the liquid crystal cone angle being equal to half the angle between a pair of directors each adjacent a different one of the surfaces.

公开(公告)号：US4815827A

公开(公告)日：1989-03-28

申请号：US23203

申请日：1987-03-09

申请人： Charles H. R. Lane

发明人： Charles H. R. Lane

IPC分类号： G02B26/02 ,  G02F1/31 ,  H04Q3/52 ,  G02F1/133

CPC分类号： G02F1/31 ,  G02B26/02

摘要： A multi-input/output optical switch structure comprises a pair of parallel, inwardly facing main mirror elements 24, 25 and mounted equidistant between the main mirror elements is a co-linear array of optical switching units 40. To provide the multi-switching function and to compensate for the fact that the switch units are in a colinear array there are a plurality of additional mirror elements (41,42,43,44) mounted between the linear array and one main mirror element.

摘要翻译： 多输入/输出光开关结构包括一对平行的面向内的主镜元件24,25，并且主反射镜元件之间等距地安装在光学开关单元40的共线阵列上。为了提供多重切换功能 并且为了补偿开关单元处于共线阵列的事实，安装在线性阵列和一个主镜元件之间的多个附加镜元件（41,42,43,44）。

公开(公告)号：US4776827A

公开(公告)日：1988-10-11

申请号：US89607

申请日：1987-08-26

申请人： Martin P. Greaves

发明人： Martin P. Greaves

IPC分类号： G01K11/32 ,  G01K11/00 ,  G01N21/64

CPC分类号： G01K11/3213

摘要： A temperature sensing and measuring system in which a luminescent material is excited using a light source. The luminescence emitted decays with time, the decay time being dependent on temperature. Thus by monitoring the excitation and luminescence transmitted to and from the material via an optical fibre, the decay time constant and thus the temperature can be determined.

摘要翻译： 一种使用光源激发发光材料的温度感测和测量系统。 发射的发光随时间衰减，衰减时间取决于温度。 因此，通过监测通过光纤传输到材料的激发和发光，可以确定衰减时间常数，从而确定温度。

公开(公告)号：US4771293A

公开(公告)日：1988-09-13

申请号：US795528

申请日：1985-11-06

申请人： Andrew Williams ,  Eric G. Matthams ,  Bernard F. Payne

发明人： Andrew Williams ,  Eric G. Matthams ,  Bernard F. Payne

IPC分类号： H01Q1/08 ,  H01Q1/32 ,  H01Q15/16 ,  H01Q19/12 ,  H01Q19/19 ,  H01Q19/18

CPC分类号： H01Q19/192 ,  H01Q1/08 ,  H01Q1/3216 ,  H01Q15/161

摘要： A folding antenna for use in a satellite communication system comprises a box having a base (1) which forms the supporting structure for the antenna. A main reflector (16) is mounted on a platform (11) to which it is pivotted about a first axis (14). A sub-reflector (26) is pivotted to the main reflector about a second axis (21). By pivotting the sub-reflector and the main reflector downwardly they can be stowed into a position close to the base (1) and the lids (8) of the box closed to protect the system during transportation.

摘要翻译： 用于卫星通信系统的折叠天线包括具有形成天线支撑结构的基座（1）的盒子。 主反射器（16）安装在平台（11）上，围绕第一轴线（14）枢转。 子反射器（26）围绕第二轴线（21）枢转到主反射器。 通过将副反射器和主反射器向下枢转，它们可以被收纳到靠近基座（1）的位置，并且盒的盖（8）被封闭以在运输期间保护系统。

公开(公告)号：US4761622A

公开(公告)日：1988-08-02

申请号：US924659

申请日：1986-10-30

申请人： David J. Cracknell ,  Raymond P. Smith

发明人： David J. Cracknell ,  Raymond P. Smith

IPC分类号： H01P1/12 ,  H01P1/10

CPC分类号： H01P1/122

摘要： Waveguide switching apparatus includes a stator and a rotor arranged to rotate relative to it. The rotor includes passages therethrough arranged to make connections between channels in the stator depending on the relative position of the rotor and stator. One passage is defined partly by the rotor and partly by the stator. This reduces the inertia of the rotor compared with a conventional switch in which all passages are entirely contained within the rotor, and thus improves switching accuracy. A passage in the rotor may have a dimension, in a plane transverse to the axis of rotation, which varies along its length, being smallest at its mid-length. Curved passages in the rotor may be arranged such that tangents to their center lines at their ports are non-radial. This enables the diameter of the rotor to be smaller than would otherwise be required. In another aspect of the invention, an asymmetric circumferential slot arrangment is included in the rotor.

摘要翻译： 波导切换装置包括定子和转子，其布置成相对于其转动。 转子包括穿过其中的通道，其布置成根据转子和定子的相对位置在定子中的通道之间形成连接。 一个通道部分地由转子限定，部分由定子限定。 与传统的开关相比，转子的惯性降低，其中所有通道完全包含在转子内，从而提高了开关精度。 转子中的通道可以具有在垂直于旋转轴线的平面中的尺寸，其沿其长度变化，在其中间长度处最小。 转子中的弯曲通道可以被布置成使得在其端口处的它们的中心线的切线是非径向的。 这使转子的直径小于否则要求的直径。 在本发明的另一方面，在转子中包括非对称的周向狭缝排列。

公开(公告)号：US4733207A

公开(公告)日：1988-03-22

申请号：US62090

申请日：1987-06-12

申请人： Robert C. Peach

发明人： Robert C. Peach

IPC分类号： H03H3/08 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/14505

摘要： A surface acoustic wave filter comprising; a first bidirectional ID transducer (5) of symmetrical form; a second ID transducer (1) acoustically coupled with the first transducer and comprising two parts (1A, 1B) each of which parts is in the form of one half of a respective bidirectional ID transducer (9 or 11) of symmetrical form, the two parts being positioned with respect to one another and the first transducer so that when respectively excited by corresponding signals of different phases they co-operate to produce a unidirectional acoustic signal propagating towards the first transducer from one side thereof; and a third transducer (3) acoustically coupled with the first transducer and comprising two parts (3A, 3B ), each of which parts is electrically connected in parallel with a respective one of the two parts of said second transducer, and each of which parts of the third transducer is effectively in the form of the mirror image about the center line (7) of the first transducer of the other half of the bidirectional transducer whose one half constitutes the part of the second transducer with which it is connected. The invention provides a filter of intrinsically low insertion loss without the use of a cross-over structure as it required in known forms of low loss filter using undirectional multiphase ID transducers.

公开(公告)号：US4727495A

公开(公告)日：1988-02-23

申请号：US785152

申请日：1985-10-07

申请人： Robert Cheetham ,  Martin Roberts

发明人： Robert Cheetham ,  Martin Roberts

IPC分类号： H04Q11/04 ,  H04J3/06

CPC分类号： H04Q11/0428

摘要： The 16 kbit/s HDLC formatted signalling channel for each of 256 ISDN subscribers is separated from the data channel(s) at the exchange line circuit and TMD multiplexed into a 4 Mbit/s stream provided to a common signalling handler. In the handler, a receiving element processes each new bit of the 4 Mbit/s stream with 47 bits read out of a channel parameter store by a channel number provided by a channel allocation store. The 47 bits include the previous 7 received bits and a message byte address for that channel. When those 7 bits and the new bit form a new deformatted message byte, that byte is written into an incoming message store at a location determined by the current channel number and message byte address. Using a FIFO buffer, messages are read from the incoming message store by a processor in the order in which they are completed.

摘要翻译： 用于256个ISDN用户中的每一个的16kbit / s HDLC格式的信令信道与交换线电路上的数据信道和多路复用到提供给公共信令处理器的4Mbit / s流的TMD分离。 在处理器中，接收元件通过由信道分配存储器提供的信道号从通道参数存储器读出47位处理4Mbit / s流的每个新位。 47位包括前7个接收位和该通道的消息字节地址。 当这7位和新位形成一个新的去格式消息字节时，该字节被写入到由当前通道号和消息字节地址确定的位置的入站消息存储中。 使用FIFO缓冲区，处理器按照完成的顺序从入站消息存储区读取消息。

公开(公告)号：US4727492A

公开(公告)日：1988-02-23

申请号：US584598

申请日：1984-02-29

申请人： Peter J. Reeve ,  Michael P. Robins ,  Malcolm T. Roberts

发明人： Peter J. Reeve ,  Michael P. Robins ,  Malcolm T. Roberts

IPC分类号： G05D1/02 ,  G06F19/00 ,  G06F15/50

CPC分类号： G05D1/0272 ,  G05D1/024

摘要： A vehicle control and guidance system in which a desired route for the vehicle is stored in the vehicle in the form of co-ordinates in a ground reference frame. The `vectors` between these junction points are divided by successive reference points into incremental vectors, the reference points being generated ahead of the vehicle at regular intervals. A dead reckoning system predicts the position of the vehicle at the end of each interval and this estimate is corrected, using a Kalman filter, by an independent fixed-target detection system using a scanning laser. The error between the estimated vehicle position and the local incremental vector provides a steering angle correction for the vehicle and the vehicle speed is dependent upon the lag of the vehicle behind the generation of reference points.

摘要翻译： 一种车辆控制和引导系统，其中车辆的期望路线以坐标在地面参考系中的形式存储在车辆中。 这些连接点之间的“向量”被连续的参考点划分为增量向量，参考点以规则的间隔在车辆前方产生。 航位推算系统预测车辆在每个间隔结束时的位置，并且使用卡尔曼滤波器通过使用扫描激光器的独立固定目标检测系统校正该估计。 估计车辆位置与局部增量向量之间的误差为车辆提供转向角校正，并且车速取决于在生成参考点之后的车辆的滞后。