公开(公告)号：US5278086A

公开(公告)日：1994-01-11

申请号：US618651

申请日：1990-11-27

申请人： Derek W. Tomes ,  Patrick C. Rundle ,  Antony J. Lowe ,  Stephen A. Haws

发明人： Derek W. Tomes ,  Patrick C. Rundle ,  Antony J. Lowe ,  Stephen A. Haws

IPC分类号： G02F1/136 ,  G02F1/1362 ,  G02F1/1368 ,  G09F9/30 ,  H01L29/78 ,  H01L29/786 ,  H01L27/105

CPC分类号： G02F1/1368 ,  G02F2001/136268 ,  G02F2201/122 ,  G02F2202/104

摘要： In a method of forming a matrix addressable display comprising a group of switchable cells, such as liquid crystal cells, having electrodes on each of two parallel plates and thin-film drive transistors disposed on one of the plates, gate resistors are provided by elongate doped polysilicon regions connecting the gate electrodes to address lines. The gate resistors prevent short-circuiting of the address lines in the event of a gate short-circuit occurring in any of the transistors.

摘要翻译： 在形成矩阵可寻址显示器的方法中，包括一组可切换单元，例如液晶单元，在两个平行板中的每一个上具有电极，并且在一个板上设置薄膜驱动晶体管，栅极电阻由细长的掺杂 将栅电极连接到地址线的多晶硅区域。 门电阻器防止在任何晶体管中发生栅极短路的情况下地址线短路。

公开(公告)号：US5259987A

公开(公告)日：1993-11-09

申请号：US793796

申请日：1991-11-18

申请人： Ciaran B. McArdle ,  Gary Nestor ,  George W. Gray ,  David Lacey

发明人： Ciaran B. McArdle ,  Gary Nestor ,  George W. Gray ,  David Lacey

IPC分类号： C09K19/40 ,  C09K19/52 ,  C08G77/00 ,  C08G77/20 ,  C09K19/12

CPC分类号： C09K19/408

摘要： Liquid crystal polymers, which may be used for optical information storage, either alone or in mixture with other liquid crystals, are of the general formula ##STR1## wherein the mesogenic grouping M has a general structure ##STR2## wherein the rings P and Q are selected from phenyl, trans-cyclohexyl, pyridyl, pyrimidinyl, dioxanyl, and bicyclo (2.2.2) octyl. The rings P and/or Q may carry lateral substituents, preferably Me or F. The general structure of Formula (I) may represent a homopolymer or a copolymer.

摘要翻译： 可用于光学信息存储的单独或与其它液晶混合的液晶聚合物具有通式（I），其中介晶组M具有通用结构“IMAGE”，其中环P 和Q选自苯基，反 - 环己基，吡啶基，嘧啶基，二恶烷基和双环（2.2.2）辛基。 环P和/或Q可以携带侧向取代基，优选Me或F.式（I）的一般结构可以表示均聚物或共聚物。

公开(公告)号：US5194860A

公开(公告)日：1993-03-16

申请号：US613319

申请日：1990-11-15

申请人： Alan J. Jones ,  Andrew H. J. Larkins ,  Trevor W. Booth ,  Frederick M. Clayton ,  Gary J. Marshall

发明人： Alan J. Jones ,  Andrew H. J. Larkins ,  Trevor W. Booth ,  Frederick M. Clayton ,  Gary J. Marshall

IPC分类号： G01D4/00 ,  G08C17/02

CPC分类号： G01D4/006 ,  H04Q9/00 ,  H04Q2209/50 ,  H04Q2209/60 ,  Y02B90/243 ,  Y04S20/325

摘要： A radio telemetry system for collecting the readings of consumer's electricity consumption meters includes a master station (1) carried by a vehicle (1) and a plurality of transponders (3), each of which holds an electrical quantity indicative of an amount of electrical power consumed as measured by the meter associated with that transponder (3). The transponders (3) and the master station (1) communicate such that the transponders (3) transmit to the master station (1) signals containing information as to the values of the aforesaid electrical quantities held by them. Such communication takes place on a relatively quiet channel, of a number of channels, as determined by the master station (1) such that the system is capable of operating satisfactorily when the master station (1) and the transponders (3) utilise relatively low power transmitters (7, 19).

公开(公告)号：US5147501A

公开(公告)日：1992-09-15

申请号：US464431

申请日：1990-01-12

申请人： Neil A. Cade ,  Rosemary A. Lee ,  Chandrakant Patel ,  Helen A. Williams

发明人： Neil A. Cade ,  Rosemary A. Lee ,  Chandrakant Patel ,  Helen A. Williams

IPC分类号： H01J1/304 ,  H01J9/02 ,  H01T4/10

CPC分类号： H01J9/025 ,  H01J1/3042

摘要： In the production of micron-size pyramid emitters for field emission devices, a first layer of electrically-conductive material, such as single crystal silicon or metal, is etched to form column-like structures each of which tapers from each end of the column towards an intermediate portion along its length. A second conductive layer is formed in contact with the free ends of the columns, and etching of the columns is then resumed until the intermediate portion of each column is etched through, leaving a pair of pyramid emitters pointing towards one another and supported by the respective conductive layer.

公开(公告)号：US5081512A

公开(公告)日：1992-01-14

申请号：US520646

申请日：1990-05-08

申请人： Michael J. Kelly ,  Micahel Pepper ,  Robert J. Brown ,  Charles G. Smith ,  David A. Wharam

发明人： Michael J. Kelly ,  Micahel Pepper ,  Robert J. Brown ,  Charles G. Smith ,  David A. Wharam

IPC分类号： H01L29/775

CPC分类号： B82Y10/00 ,  H01L29/775

摘要： Semiconductor apparatus comprises a split-gate semiconductor device (1) which has a first layer (3) of a first undoped semiconductor material (e.g. GaAs) and a second layer (4) of a second semiconductor material (e.g. AlGaAs) which is doped through at least part of its thickness. The second material has a higher energy band gap than the first material, and the layers form a heterojunction so that electrons from the second layer collect in the first layer to form a two-dimensional electron gas. Drain and source contacts (7,6) are provided on the second layers, and a gate electrode (8) is so configured that on application of a sufficiently large negative bias to the gate electrode a constriction is formed in the first layer through which only a one-dimensional electron gas can pass between the source and drain contacts. The apparatus also includes a bias supply (17) for applying a bias voltage between the source and drain contacts. The source/drain bias is made equal to or greater than E.sub.f /e where E.sub.f is the Fermi energy of electrons in the two-dimensional gas and e is the electron charge. As a result of the large source drain bias, the device exhibits negative resistance, and the apparatus can be used as an oscillator or a detector, operating in the Thz range.

公开(公告)号：US5073219A

公开(公告)日：1991-12-17

申请号：US424256

申请日：1989-12-11

申请人： Ciaran B. McArdle ,  Michael G. Clark ,  William R. Beck ,  Carolyn Bowry

发明人： Ciaran B. McArdle ,  Michael G. Clark ,  William R. Beck ,  Carolyn Bowry

IPC分类号： G02F1/1333 ,  G11B7/0033 ,  G11B7/0055 ,  G11B7/26

CPC分类号： G11B7/26 ,  G02F1/133365 ,  G11B7/0033 ,  G11B7/00555 ,  Y10S118/04 ,  Y10T156/108 ,  Y10T156/1084 ,  Y10T156/12 ,  Y10T428/1005 ,  Y10T428/1014

摘要： In a process for mass producing optical storage sheets, an elongate film of a liquid crystalline material is fed lengthwise along a path through an aligning gate. The aligning gate applies to successive areas of the film a field which aligns the molecules. The field may be an electric field and/or a shear field. An aligning layer, such as a surfactant layer may also be used for alignment of the film areas. The aligned film may then be cut into pieces for use as microfiches or microfilms. The film material is preferably a liquid crystal polymer material.

摘要翻译： PCT No.PCT / GB89 / 00173 Sec。 371日期1989年12月11日第 102（e）日期1989年12月11日PCT提交1989年2月17日PCT公布。 出版物WO89 / 07821 日本1989年8月24日。在大量生产光学存储片材的方法中，液晶材料的细长膜沿着通过对准门的路径纵向地进给。 对准门适用于膜的连续区域，使得分子对齐的场。 该场可以是电场和/或剪切场。 诸如表面活性剂层的取向层也可以用于膜区域的对准。 然后可以将取向的膜切成片以用作微缩胶片或微缩胶卷。 膜材料优选为液晶聚合物材料。

公开(公告)号：US4965827A

公开(公告)日：1990-10-23

申请号：US195323

申请日：1988-05-18

申请人： Neil A. McDonald

发明人： Neil A. McDonald

IPC分类号： G07F7/10 ,  H04L9/32

CPC分类号： G07F7/1008 ,  G06Q20/341 ,  G06Q20/367 ,  G06Q20/40975 ,  H04L9/3226

摘要： An authenticator for digital data is derived by generating a numerical array, using a secret key to controllably shift the relative positions of the elements of the array, and applying the scrambled array to a message to create an authenticator for that message. The method allows a high level of security and minimizes the risk of a system, such as an intelligent portable token and reader system, being compromised.

公开(公告)号：US4935631A

公开(公告)日：1990-06-19

申请号：US230373

申请日：1988-09-26

申请人： Alan Mosley ,  Brian L. Kingston ,  Michael G. Clark ,  Martin R. Lewis

发明人： Alan Mosley ,  Brian L. Kingston ,  Michael G. Clark ,  Martin R. Lewis

IPC分类号： G01J1/42 ,  G01J1/58 ,  G01T1/20 ,  G21K4/00

CPC分类号： G01J1/58

摘要： A radiation meter for measuring the intensity of incident ultraviolet radiation in a predetermined wavelength band against a background of broadband radiation, such as sunlight, includes a sheet of a material incorporating a fluorescent dye. The dye is selected to absorb radiation in the predetermined wavelength band and consequently to emit fluorescent radiation. The fluorescent radiation is internally reflected within the sheet and emerges from an edge of the sheet, where it impinges on a photodiode. The photodiode produces an output which is dependent upon the intensity of the ultraviolet radiation. This output is used to drive a suitable display. The unwanted background radiation passes through the sheet without causing fluorescence of the dye, and is absorbed in an absorbent backing layer. The photodiode is so positioned and screened that the background radiation cannot impinge upon it. A particularly advantageous use of the meter is for measurement of the intensity of ultraviolet band radiation, which is the cause of sunburn and skin cancer.

摘要翻译： PCT No.PCT / GB87 / 00889 Sec。 371日期：1988年9月26日 102（e）日期1988年9月26日PCT提交1987年12月8日PCT公布。 出版物WO88 / 04414 日期：1988年6月16日。一种用于测量相对于诸如太阳光的宽带辐射背景的预定波长带中的入射紫外线辐射的强度的辐射计包括含有荧光染料的材料片。 选择染料以吸收预定波长带中的辐射，并因此发射荧光辐射。 荧光辐射内部反射在片材内并从片材的边缘出射，在其边缘处照射在光电二极管上。 光电二极管产生一个取决于紫外线辐射强度的输出。 该输出用于驱动合适的显示。 不需要的背景辐射通过片材而不引起染料的荧光，并被吸收在吸收性背衬层中。 光电二极管如此定位和屏蔽，使得背景辐射不会撞击它。 仪表的特别有利的用途是测量紫外线辐射的强度，这是晒伤和皮肤癌的原因。

公开(公告)号：US4906062A

公开(公告)日：1990-03-06

申请号：US264349

申请日：1988-10-31

申请人： Terence P. Young

发明人： Terence P. Young

IPC分类号： G02B6/125

CPC分类号： G02B6/125

摘要： An integrated optic device comprises a strip-like waveguide having a Z-bend to provide a lateral offset. Weak lateral guiding in the waveguide is provided by giving the waveguide a higher effective refractive index than that of the remaining material in that layer. In accordance with the invention, an edge guide region is formed in the same layer just outside each bend, and has an even greater effective refractive index. The edge guide regions minimize power loss at the bends.

公开(公告)号：US4879559A

公开(公告)日：1989-11-07

申请号：US233251

申请日：1988-08-17

申请人： Bernard Arambepola

发明人： Bernard Arambepola

IPC分类号： G01S13/90

CPC分类号： G01S13/9017

摘要： Synthetic aperture radar is a known system for producing a high resolution image of the terrain under a moving platform, in which the effect of a large antenna (which would give high resolution in the direction of travel (azimuth direction)) is synthesized by processing together with suitable phase shifts a large number of radar returns from a smaller antenna for which the footprints overlap.In order to simplify the image processing task, which is preferably carried out at high speed and on the moving platform itself, according to the invention an azimuth processor comprises a plurality of data processing modules 35.sup.1 -35.sup.R/N, each associated with a different part of the (range line) samples of echo returns, for example, by virtue of being connected to successive sections 33.sup.1 -33.sup.R/N of a shift register into which successive range lines are clocked. Each module 35.sup.i includes a memory 39.sup.i to store the sets of range line samples, a processing section 37.sup.i to azimuth process the samples contained in the memory. To accommodate the range migration effect whereby the range of a point on the terrain varies between different echo returns as the platform moves relative to the terrain, adjacent modules are interconnected by links 49.sup.i so that samples required for processing by a module and not contained in its memory may be obtained from another module.

摘要翻译： 合成孔径雷达是用于在移动平台下产生地形的高分辨率图像的已知系统，其中大的天线（其将在行进方向（方位角方向）上给出高分辨率）的效果通过一起处理而合成 通过适当的相位从大小重叠的较小的天线返回大量的雷达。 为了简化优选地以高速度和移动平台本身执行的图像处理任务，根据本发明，方位处理器包括多个数据处理模块351-35R / N，每个与不同部分相关联 （范围线）的回波样本返回，例如，通过连接到顺序范围线被计时的移位寄存器的连续部分331 -33R / N。 每个模块35i包括用于存储范围线样本集合的存储器39i，处理部分37i以对包含在存储器中的样本进行方位处理。 为了适应范围迁移效应，由此当平台相对于地形移动时，地形上的点的范围在不同回波返回之间变化，相邻模块通过链接49i互连，使得由模块处理而不包含在其中的样本 可以从另一个模块获得存储器。