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1.发明授权
公开(公告)号：US4942336A
公开(公告)日：1990-07-17
申请号：US182632
申请日：1988-04-18
申请人： Kurt Amboss , Jon A. Davis
发明人： Kurt Amboss , Jon A. Davis
IPC分类号： H01J23/06 , H01J23/087
CPC分类号： H01J23/0873 , H01J23/06
摘要： A traveling-wave tube (10) has a confined-flow periodic permanent magnet focusing arrangement (26) in which either the first magnet (60f) or the third magnet (60t) from the electron gun (12) has an extent or axial thickness along the electron stream path which is one-half that of the remaining magnets in the arrangement, thereby providing a scalar magnetic potential of essentially zero on the electron gun pole piece (46), thereby eliminating the field reversal at the cathode (14). This enables a magnetic field to be provided in the region of the electron gun between the gun pole piece (46) and a location behind the cathode due solely to the magnetic field leaking through the gun pole piece aperture (50). The axial magnetic field within the electron gun (12) may be tailored or fine tuned, by varying the size of the aperture (50) in the gun pole piece (46).
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公开(公告)号：US4821337A
公开(公告)日：1989-04-11
申请号：US792715
申请日：1985-10-30
申请人： Ake W. Alm
发明人： Ake W. Alm
CPC分类号： H04N5/33 , H04N5/3653 , H04N5/3656
摘要： An imaging system incorporating a scanned array of infrared detectors for a presentation of scene data on a display includes gain normalization and averaging circuitry coupled to individual ones of the detectors of the detector array. The gain normalization is accomplished with gain control circuitry structured as a feedback loop introducing equality between the magnitude of an average value of a detector signal and a reference signal. The imaging system comprises a set of channels connecting with respective ones of the detectors, each channel having a gain control circuitry. A common value of the reference signal is applied to each channel. The averaging time is several times greater than the duration of a single scan in the scanning of the detector array so as to introduce gain normalization to subject matter which is substantially uniform throughout a swath of the scene swept by a detector while leaving image points of relatively small objects unaffected by the gain normalization. The display is relatively free of nonuniformities associated with differing responsivities of the detectors to infrared radiation.
摘要翻译： 包括用于在显示器上呈现场景数据的红外检测器的扫描阵列的成像系统包括耦合到检测器阵列的各个检测器的增益归一化和平均电路。 利用构成为反馈回路的增益控制电路实现增益归一化，其引入检测器信号的平均值的大小与参考信号之间的等同性。 成像系统包括与相应检测器连接的一组通道，每个通道具有增益控制电路。 参考信号的公共值被应用于每个通道。 平均时间比检测器阵列的扫描中的单次扫描的持续时间大几倍，以便将主要物质的增益归一化引入到由检测器扫描的场景的整个扫描范围内基本均匀的主体，同时留下相对的图像点 不受增益归一化影响的小物体。 显示器相对没有与检测器对红外辐射的不同响应度相关联的不均匀性。
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公开(公告)号：US4580277A
公开(公告)日：1986-04-01
申请号：US588601
申请日：1984-03-12
CPC分类号： H04L27/2092
摘要： A digital-based phase shift keying modulating device is disclosed. A phase code command signal is applied to an exemplary bi-phase shift keying modulating (BPSK) device designed in accordance with the present invention to phase reverse by 180.degree. the output signal produced by the device. The exemplary BPSK modulating device is capable of producing an output signal of either triangular or sinusoidal shape. A preferred embodiment of the exemplary device is implemented by using a single exclusive OR logic gate in conjunction with a frequency synthesizer, which is comprised of an accumulator, an output register, and a group of exclusive OR logic gates. The modulator device has a variety of applications in digital communication systems such as, for example, ground-based and spacecraft communication systems. The disclosed BPSK modulating device is particularly useful in spacecraft data link communications systems wherein weight, volume, and power consumption are at a premium.
摘要翻译： 公开了一种基于数字的相移键控调制装置。 将相位代码指令信号应用于根据本发明设计的示例性双相移键控调制（BPSK）器件，以将器件产生的输出信号相位反相180°。 示例性的BPSK调制装置能够产生三角形或正弦形状的输出信号。 示例性设备的优选实施例通过使用单个异或逻辑门与由累加器，输出寄存器和一组异或逻辑门组成的频率合成器来实现。 调制器装置在例如地面和航天器通信系统的数字通信系统中具有各种应用。 所公开的BPSK调制装置在其中重量，体积和功率消耗是非常重要的航天器数据链路通信系统中特别有用。
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公开(公告)号：US4465833A
公开(公告)日：1984-08-14
申请号：US197300
申请日：1980-10-15
IPC分类号： C07C67/343 , B01J31/00 , C07B61/00 , C07C1/00 , C07C2/38 , C07C15/20 , C07C15/56 , C07C15/60 , C07C15/62 , C07C17/00 , C07C17/26 , C07C22/08 , C07C45/00 , C07C45/68 , C07C47/548 , C07C67/00 , C07C69/76 , C07C209/00 , C07C211/46 , C07C231/00 , C07C231/12 , C07C233/65 , C07C253/00 , C07C255/50 , C07D233/54 , C07D487/04 , C07F7/08 , C08G73/00 , C08G73/06 , C07D239/70 , C07D213/06 , C07D307/89
CPC分类号： C07D487/04 , C07C15/60 , C07C15/62 , C07C45/68 , C07F7/0827 , Y02P20/55
摘要： A novel ethynylation process is disclosed which provides an expanded series of novel ethylnyl-terminated aromatic compounds having base sensitive substituents and which facilitates the economic preparation of prior art ethynyl-substituted aromatic compounds.
摘要翻译： 公开了一种新型的乙炔化方法，其提供了具有碱敏感取代基的扩展系列新的乙烯基封端的芳族化合物，并且有助于经济地制备现有技术的乙炔基取代的芳族化合物。
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公开(公告)号：US4935881A
公开(公告)日：1990-06-19
申请号：US38253
申请日：1987-04-14
CPC分类号： G06F11/364 , F41G7/006 , G06F11/22 , G06F11/2273
摘要： A method and apparatus for testing missile software is disclosed. The appartus (10) comprises a missile data processor interface circuit (14) for interfacing the data processor (16) of the missile with the apparatus (10). The apparatus (10) further comprises a circuit (18) for real-time collection of information appearing on at least one of the memory buses of the missile data processor. The circuit (18) for real-time collection of data is in electrical communication with the data processor interface circuit (14) and a computer (24).
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公开(公告)号：US5847832A
公开(公告)日：1998-12-08
申请号：US616898
申请日：1996-03-15
CPC分类号： A61B5/0064 , A61B5/1077 , G01B11/2527
摘要： A hand-held instrument (10) and associated method for providing optical measurements of the contour, range and motion of an object, such as a tympanic membrane of an ear, in real time, and to provide for simultaneous visualization of the object. The instrument (10) includes an illumination source (22) that projects an optical beam (24) through a grating (26) onto a gradient of refractive index lens (32) to project light and dark fringes onto the object at stepped phases determined by the grating position. Light reflected from the object is collected and focused onto an eye piece (18) to be observed by the operator. Simultaneously, reflected light from the object is focused onto a camera (46). The camera (46) generates an electrical signal in proportion to the light intensity received by the camera (46) to generate an image of the object. The image is then transmitted to processing systems to compute phase relationships in the reflected grating image to generate a contour map of the object. A drive system (28) is provided to move the grating (26) to different positions at a fraction of the spatial period of the grating during a measurement to provide phase sensitivity, eliminate reflectivity variations and reduce background noise.
摘要翻译： 一种手持式仪器（10）和用于实时地提供物体（例如耳朵的鼓膜）的轮廓，范围和运动的光学测量的相关方法，并且提供对象的同时可视化。 仪器（10）包括照射源（22），其将光束（24）通过光栅（26）投影到折射率透镜（32）的梯度上，以将光和黑条纹投射到物体上，阶梯相位由 光栅位置。 从物体反射的光被收集并聚焦到眼睛片（18）上以由操作者观察。 同时，来自物体的反射光聚焦到相机（46）上。 相机（46）产生与照相机（46）接收的光强成比例的电信号，以生成对象的图像。 然后将图像传输到处理系统以计算反射光栅图像中的相位关系，以生成对象的轮廓图。 提供驱动系统（28）以在测量期间将光栅（26）移动到光栅的空间周期的一小部分的不同位置，以提供相位灵敏度，消除反射率变化并降低背景噪声。
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公开(公告)号：US5825553A
公开(公告)日：1998-10-20
申请号：US159006
申请日：1993-11-29
申请人： Chungte W. Chen
发明人： Chungte W. Chen
CPC分类号： G02B17/0852 , G02B17/0816 , G02B25/00
摘要： An improved eyepiece for an optical system. In general, the inventive eyepiece (10) includes a refractive element (16) and an optical arrangement for relaying the entrance pupil of the system to the refractive element. In a specific implementation, the optical arrangement includes a concave primary mirror (12) and a secondary mirror (14). The mirrors are mounted to communicate an image from the refractive element (16) to the entrance pupil (40). In the specific implementation, the refractive element (16) is one or more refractive lenses. The use of a reflective optical arrangement allows for the long eye relief. The placement of the entrance pupil close to the pupil of the lens allows for the use of a compact optical arrangement with high ratio of eye relief to effective focal length with a compact optical arrangement. The system affords minimal lateral chromatic aberration and good image quality.
摘要翻译： 用于光学系统的改进的目镜。 通常，本发明的目镜（10）包括折射元件（16）和用于将系统的入射光瞳中继到折射元件的光学装置。 在具体实施方式中，光学装置包括凹形主镜（12）和副镜（14）。 镜子被安装成将来自折射元件（16）的图像传送到入射光瞳（40）。 在具体实现中，折射元件（16）是一个或多个折射透镜。 使用反射光学布置允许长时间的眼睛释放。 入射光瞳靠近透镜瞳孔的位置允许使用紧凑的光学布置，具有高比例的眼睛浮雕与有效的焦距，并具有紧凑的光学布置。 该系统具有最小的横向色差和良好的图像质量。
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公开(公告)号：US5818353A
公开(公告)日：1998-10-06
申请号：US639230
申请日：1996-04-29
CPC分类号： G01C9/00 , Y10T74/1257
摘要： Self leveling apparatus that includes a frame, a device that is to be leveled, and a leveling mechanism such as a double ring gimbal having an inner gimbal ring and an outer gimbal ring. The outer gimbal ring is secured to the frame and the inner gimbal ring is secured to the device and to the outer ring. The inner ring comprises a viscous or preloaded bearing that allows the device to swing around an inner ring axle to thereby level itself in that axis and prevent spurious movement of the device. The outer gimbal ring and inner gimbal ring are attached by outer axles that comprise a viscous or preloaded bearing that allow the inner gimbal ring to swing around the outer axles thereby level the inner gimbal ring in that axis and prevent spurious movement of the device. A disclosed embodiment of the invention includes a magnetometer sensor that is coupled to signal processing and telemetry electronics and a power source that are leveled to keep axes of the sensor oriented along horizontal and vertical axes.
摘要翻译： 自动调平装置，包括框架，待平整的装置，以及诸如具有内万向节环和外万向节环的双环万向节的调平机构。 外部万向环固定在框架上，内部万向环固定在设备和外圈上。 内环包括粘性或预加载的轴承，其允许装置围绕内环轴线摆动，从而在该轴线上自平衡并防止装置的杂散运动。 外万向节环和内万向节环由外轴连接，外轴包括一个允许内万向节环围绕外轴摆动的粘性或预载轴承，从而在该轴上平衡内万向环，并防止装置发生杂散运动。 本发明的公开的实施例包括耦合到信号处理和遥测电子装置的磁力计传感器和被调平以使传感器的轴沿着水平轴和垂直轴定向的电源。
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公开(公告)号：US5790935A
公开(公告)日：1998-08-04
申请号：US594064
申请日：1996-01-30
申请人： David W. Payton
发明人： David W. Payton
IPC分类号： H04N7/173 , H04N21/222 , H04N21/231 , H04N21/25 , H04N21/258 , H04N21/262 , H04N21/442 , H04N21/81 , H07N7/173
CPC分类号： H04N21/26241 , H04N21/222 , H04N21/23106 , H04N21/252 , H04N21/25891 , H04N21/262 , H04N21/44222 , H04N21/816 , H04N7/17336
摘要： A digital information system delivers virtual on-demand information over existing, as well as the next generation, digital transport systems by offloading a portion of the systems' peak bandwidth requirements to the local subscribers. A collaborative filtering system synthesizes the preferences of all of the subscribers and then predicts those items that each subscriber might like, and therefore request. Each subscriber is provided with a local storage device for storing, during off-peak hours, those items recommended by the collaborative filtering system. As a result, only a relatively few subscriber requests must be serviced directly from the central distribution system.
摘要翻译： 数字信息系统通过将一部分系统的峰值带宽要求卸载到本地用户，从而在现有的以及下一代数字传输系统上提供虚拟的点播信息。 协作过滤系统综合所有用户的偏好，然后预测每个用户可能喜欢的那些项目，因此请求。 每个用户都设有本地存储设备，用于在非高峰时段存储由协作过滤系统推荐的那些项目。 因此，只有相对较少的用户请求必须直接从中央分配系统提供服务。
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公开(公告)号：US5788352A
公开(公告)日：1998-08-04
申请号：US331237
申请日：1994-10-25
IPC分类号： G03B21/14
CPC分类号： G03B21/14 , G03B21/208 , G03B21/40 , H04N9/3188
摘要： A projection system wherein two or more separate display sources, such as high brightness sources, or active matrix liquid crystal display (AMLCD) or other flat panel displays are used to write information directly onto a display screen, or onto a photoactivated reflective light valve for projection onto the display screen. Sequential imaging apparatus is used to alternately generate first and second images for display. For example, such images are coupled to the photoactivated reflective light valve and an illumination source is employed to illuminate the light valve and project a composite image onto the display screen. The flat panel displays may be transmissive, reflective, or self-emissive with the use of an optical shutter. A writing illumination source is used for non-self-emissive flat panel displays. Using high brightness display sources, the images may be directly written onto the display screen without the use of the reflective photoactivated light valve and the illumination source. In the present invention, each video frame is divided equally among the AMLCD/flat panel displays either spatially or temporally, and the flat panel displays are optomechanically multiplexed or optically shuttered by a multiplexer, thus imaging partial frames of information sequentially or completely onto the photoactivated light valve. This results in a complete frame or sequence of frames written onto the photoactivated light valve and displayed on the screen. The present invention reduces the data rate requirements on the image sources by a factor of two, four, or more. This is a significant advantage for super-definition projection systems with multi-megapixel count requirements. Blemish/defect mitigation is achieved by alternately writing to the flat panel displays using a ping-pong approach with one-to-one full resolution flat panel displays.
摘要翻译： 一种投影系统，其中使用诸如高亮度源或有源矩阵液晶显示器（AMLCD）或其他平板显示器之类的两个或更多个分开的显示源将信息直接写入显示屏幕上或在光致反射光阀上 投影到显示屏上。 顺序成像装置用于交替地产生用于显示的第一和第二图像。 例如，这样的图像被耦合到光活化反射光阀，并且使用照明源来照亮光阀并将合成图像投影到显示屏上。 使用光学快门，平板显示器可以是透射的，反射的或自发的。 书写照明源用于非自发式平板显示器。 使用高亮度显示源，可以将图像直接写入显示屏，而不需要使用反射光活化光阀和照明源。 在本发明中，每个视频帧在空间或时间上在AMLCD /平板显示器之间被平均分配，并且平板显示器由多路复用器进行光学机械复用或光学切换，从而将部分信息帧顺序地或完全地成像到光激活 光阀。 这导致写入光激活光阀并显示在屏幕上的完整的帧或序列的帧。 本发明将对图像源的数据速率要求降低了2倍，4倍或更多倍。 对于具有百万像素数量要求的超清晰度投影系统来说，这是一个显着的优势。 通过使用乒乓方法与一对一全分辨率平板显示器交替写入平板显示器来实现瑕疵/缺陷缓解。
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