-
公开(公告)号：EP0365741A3
公开(公告)日：1991-02-06
申请号：EP89108417.0
申请日：1989-05-10
发明人： McClain, Donald T.
摘要： A security device for use with a telephone handset having a microphone and an ear transducer is adapted to prevent eavesdropping while the handset is in an on hook position. The security device is comprised of switching means (115a,115b,116a,116b) disposed in the handset and adapted to disable the transducers. The switching means is switched to a first state when the handset is placed within a first predetermined orientation corresponding to a secure mode and is switched to a second state when the handset is placed within a second predetermined orientation corresponding to an operative mode. The individual switches (115a,115b,116a,116b) forming said switching means are held in position on a switch mounting assembly (100) comprised of a mounting block (110) disposed on a circuit board (111).
-
212.发明公开Packaged semiconductor surge protection device and electronic system comprising such a device 失效密封Halbleiterüberspannungsableiter和电子系统具有这样的浪涌。
公开(公告)号：EP0409380A2
公开(公告)日：1991-01-23
申请号：EP90305085.4
申请日：1990-05-11
CPC分类号： H01C7/12
摘要： A solid-state surge protection device comprises a semiconductor chip (10) sandwiched between two electrodes (11, 12). A resilient sealing member or layer (14) comprised of a thermoplastic or thermosetting resin extends around the periphery of the device, adhering to both electrodes, so as to seal the interface region between the chip and each electrode. The resin is a flexible, dielectric material which is not disrupted by heat generated under surge conditions in the device, is environmentally inert, and preferably remains compliant under extremely cold conditions. The electrodes of the device can move together into electric-conductive contact in the event of chip destruction, or can move back into contact with the chip if separated therefrom by an arc.
摘要翻译： 一种固态电涌保护设备包括夹在两个电极（11，12）之间的半导体芯片（10）。 由热塑性或热固性树脂的弹性密封件或层（14）围绕所述装置的周边延伸，坚持两个电极，以便密封芯片和每个电极之间的界面区域。 该树脂是一种柔性，介电材料的所有未由装置浪涌的条件下产生的热破坏，在环境上是惰性的，并且优选地保持极冷的条件下兼容。 该装置的电极可以一起移动到电传导接触在破坏芯片的情况下，或者如果从那里分离通过向弧可以移动回到与芯片接触。
-
公开(公告)号：EP0237208B1
公开(公告)日：1991-01-16
申请号：EP87301398.1
申请日：1987-02-18
CPC分类号： H03H9/02874 , H03H9/02858 , H03H9/14517 , H03H9/1452 , H03H9/14547
摘要： A SAW (surface acoustic wave) device includes a substrate having thereon at least one apodized IDT (inter-digital transducer) (10). The axis (18) of the apodization pattern is inclined towards a driven conductive rail (14) of the IDT at the ends of the pattern, whereby the driven end fingers have a low capacitive coupling to a ground plane on which the substrate is supported. The capacitive coupling to the ground plane may additionally be reduced by supporting the substrate on the ground plane via an insulating support, whereby an air gap or the insulating support decreases the capacitance between the IDT and the ground plane.
-
-
215.发明公开Optoelectronic apparatus and method for its fabrication 失效Optoelektronische Anordnung und Herstellungsverfahrendafür。
公开(公告)号：EP0404301A2
公开(公告)日：1990-12-27
申请号：EP90304079.8
申请日：1990-04-17
发明人： Westwood, William Dickson , Willemsen, Herman W. , Gallant, Michel Isadore , Skillen, Richard Prescott
IPC分类号： G02B6/12
CPC分类号： G02B6/4246 , G02B6/12004 , G02B6/30
摘要： An edge emitting optoelectronic source (120) is integrally formed on a surface (112) of a semiconductor substrate. An optical waveguide (130) is integrally formed on the same surface of the substrate adjacent to the source. The waveguide is aligned with the source for optical coupling of the source to the waveguide. The waveguide comprises an optical diverter for diverting at least a portion of any light propagating along the waveguide toward the source through a surface of the waveguide. An optoelectronic detector (150) is secured to that surface of the waveguide through which light is diverted for receiving light diverted through that surface. The resulting optoelectronic apparatus is suitable for launching and detecting optical signals in large volume bidirectional optical fiber transmission systems.
摘要翻译： 边缘发射光电子源（120）整体形成在半导体衬底的表面（112）上。 一个光波导（130）整体地形成在与源极相邻的衬底的相同表面上。 波导与源极对准，用于光源耦合到波导。 波导包括光分路器，用于将沿着波导传播的任何光的至少一部分转向通过波导的表面朝向源。 光电检测器（150）固定到波导的表面，通过该表面转向光，以接收通过该表面转移的光。 所得光电装置适用于大容量双向光纤传输系统中的光信号的发射和检测。
-
216.发明公开Optical waveguide and method for its manufacture 失效Optischer Wellenleiter和Verfahren zur Herstellung。
公开(公告)号：EP0401971A2
公开(公告)日：1990-12-12
申请号：EP90304772.8
申请日：1990-05-02
IPC分类号： G02B6/12
CPC分类号： G02B6/1347
摘要： An optical waveguide is made by forming a layer of SiO₂ on a substrate and implanting a region of the SiO₂ layer with Si ions to define a region containing a stoichiometric excess of Si which defines a region having an elevated refractive index surrounded by a region having a lower refractive index. The resulting optical waveguide is stable at the high temperatures required for many semiconductor processing methods, and is useful for optical interconnection in integrated optical and optoelectronic devices.
摘要翻译： 通过在衬底上形成SiO 2层并用Si离子注入SiO 2层的区域来制造光波导，以限定含有化学计量过量的Si的区域，该区域具有由具有 较低的折射率。 所得到的光波导在许多半导体处理方法所需的高温下是稳定的，并且对于集成光学和光电子器件中的光学互连是有用的。
-
217.发明公开Low power, high noise margin logic gates employing enhancement mode switching fets 失效逻辑门具有低功耗和高信号到使用增强型的开关晶体管信噪比。
公开(公告)号：EP0389091A1
公开(公告)日：1990-09-26
申请号：EP90301268.0
申请日：1990-02-07
发明人： Sitch, John Edward
IPC分类号： H03K19/0952 , H03K19/003
CPC分类号： H03K19/0952
摘要： A low power, high noise margin logic gate (100) comprises: an input terminal (102), an output terminal (104), and first and second voltage supply terminals (V DD ,V SS ); an enhancement mode switching FET (110) having a gate connected to the input terminal (102), a source and a drain; a load device (120) connected between the drain of the switching FET (110) and the first voltage supply terminal (106); a feedback device (130) connected between the source of the switching FET (110) and the second voltage supply terminal (108); a two terminal level shift device (140) connected between the drain of the switching FET (110) and the output terminal (104); and an enhancement mode pulldown FET (150) having a gate connected to the source of the switching FET (110), a source connected to the second voltage supply terminal (V SS ), and a drain connected to the output terminal (104). The logic gate (100) as defined above operates as an invertor. The logic gate may further comprise one or more additional enhancement mode switching FETs, each having a drain connected to the load device, a source connected to the feedback device, and a gate connected to a corresponding input terminal. With the additional switching FETs and input terminals, the logic gate functions as a NOR gate.
摘要翻译： 低功耗，高噪声容限的逻辑门（100）包括：输入端子（102），在输出端（104），和第一和第二电源电压端子（VDD，VSS）; 在增强模式开关FET（110），具有连接到所述输入端子（102），源极和漏极的栅极; 连接在开关FET（110）和所述第一电压提供端（106）的漏极之间的负载装置（120）; 连接在开关FET（110）和所述第二电压提供端（108）的源极之间的反馈设备（130）; 连接在开关FET（110）和所述输出端子（104）的漏极之间的两个末端电平移位装置（140）; 和在具有连接至开关FET（110），连接到所述第二个电压提供端（VSS）的源极，以及连接到输出端（104）的漏极的源极的栅极增强型下拉FET（150）。 如上文所定义的逻辑门（100）操作为给逆变器。 所述逻辑门可以进一步包含一种或多种额外的增强模式开关FET，每个具有连接到所述负载装置的漏极，连接到反馈装置的源极，和连接到相应的输入端子的栅极。 与附加开关FET和输入端，所述逻辑门用作NOR门。
-
公开(公告)号：EP0258051A3
公开(公告)日：1990-09-19
申请号：EP87307564.2
申请日：1987-08-26
IPC分类号： G06F7/52
CPC分类号： G06F7/535 , G06F2207/5352
摘要： A digital signal processor which efficiently executes the division of a positive number in N+1 processor cycles where N is equal to the number of digits in the dividend. This is achieved by utilizing an arithmetic logic unit in the processor which is divided into two selectively concatenated independently controllable sections so that the values therein can be selectively processed under control of a unique algorithm.
-
公开(公告)号：EP0294243A3
公开(公告)日：1990-09-12
申请号：EP88305148.4
申请日：1988-06-06
CPC分类号： F17D5/00 , G02B6/4464 , G02B6/502 , H02G1/08 , H02G1/086
摘要： A method of deploying a cable or other line (34) in a fluid transportation pipeline (10) whilst in normal operation full of and transporting a fluid (12) under a positive pressure. A collapsible centralising device (62,64) is attached to the leading end of the cable (34) and is then fed in a collapsed state into the pipeline (10) via a first fluid sealing means (30) at the cable entry position (14). That device (62,64) maintains the cable end (34) centralised in the pipeline cross section whilst the cable (34) is fed into the pipeline (10). Magnetic sensing means (68,74,76) disposed near the cable exit position sense the presence of the cable end (34) and control the cable infeed so as to position the cable end (34) in a predetermined cable retrieval position. A tubular lance (54) is fed into the pipeline (10) through a second fluid sealing means (32) disposed at the cable exit position (16), and a grab (56) housed in the nozzle of the lance (54) is ejected to engage and capture part of the centralising device (62,64) and cable end (34), whereafter the grab (56) closes on being drawn back into the lance (54). The lance (54) is then withdrawn through the second fluid sealing means (32) so as to draw with it the grab (56) and the captured centralising device (62,64) and cable end (34).
-
公开(公告)号：EP0385649A1
公开(公告)日：1990-09-05
申请号：EP90301865.3
申请日：1990-02-21
发明人： Unitt, Brian Michael
IPC分类号： H04B10/08
CPC分类号： G01M11/33 , H04B10/077 , H04B10/07955
摘要： A passive distribution system for electromagnetic radiation using waveguides (10) and couplers (20) wherein radiation from a source (11) is distributed to a number of destination points (12, 13), including means at destination points for determining the power levels received at the destination points and means for transmitting from the destination points to the source location information representing said received power levels.
摘要翻译： 一种用于使用波导（10）和耦合器（20）的电磁辐射的被动分配系统，其中来自源（11）的辐射被分配到多个目的地点（12,13），包括在目的地点处的装置，用于确定接收到的功率电平 在目的地点和用于从目的地点发送到表示所述接收功率电平的源位置信息的装置。
-
-
-
-
-
-
-
-
-
搜索结果
1626 条记录 (耗时 0.022 秒)
