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16 条记录 (耗时 0.021 秒)

    Integrated frequency conversion and scanner
    4.
    发明授权
    Integrated frequency conversion and scanner 失效
    集成变频和扫描仪

    公开(公告)号：US5714240A

    公开(公告)日：1998-02-03

    申请号：US645973

    申请日：1996-05-14

    申请人： Mool C. Gupta ,  Tuviah E. Schlesinger ,  Daniel D. Stancil

    发明人： Mool C. Gupta ,  Tuviah E. Schlesinger ,  Daniel D. Stancil

    IPC分类号： G02F1/295 ,  G02F1/377 ,  B32B9/00

    CPC分类号： G02F1/295 ,  G02F1/3775 ,  Y10S428/913 ,  Y10T428/24917 ,  Y10T428/24926

    摘要： An integrated frequency conversion and scanner for converting the frequency of an input light beam and deflecting the converted light beam through an electronically controlled angle is disclosed. This structure includes an electrooptic crystal including a region formed for converting the frequency of the input light to a higher frequency; and a field changing structure associated with selected regions of the crystal arranged so that an electric field is created at least partially within the crystal to change its refractive index to thereby deflect the converted light beam through an electronically controlled angle.

    摘要翻译： 公开了一种用于转换输入光束的频率并通过电子控制的角度使转换的光束偏转的集成频率转换和扫描器。 该结构包括电光晶体，其包括形成的用于将输入光的频率转换为较高频率的区域; 以及与晶体的选定区域相关联的场改变结构，其布置成使得至少部分地在晶体内产生电场以改变其折射率，从而使经转换的光束通过电子控制的角度偏转。

    Two-dimensional beam scanner
    5.
    发明授权
    Two-dimensional beam scanner 有权
    二维光束扫描仪

    公开(公告)号：US06480323B1

    公开(公告)日：2002-11-12

    申请号：US09216472

    申请日：1998-12-18

    申请人： William C. Messner ,  Daniel D. Stancil ,  Tuviah E. Schlesinger

    发明人： William C. Messner ,  Daniel D. Stancil ,  Tuviah E. Schlesinger

    IPC分类号： G02B2608

    CPC分类号： G02B26/10

    摘要： A device that includes a projection element positioned between first and second beam scanners configured in series and a two-dimensional display plane. An apparatus for controlling the first and second beam scanners is provided so that the angle of incidence and the point of incidence of a beam output from the series connected beam scanners onto the projection element are controlled. In that manner, each point on the projection element can be mapped to a line in the display plane. A method of mapping a point in the projection element to a line in the display plane is also disclosed.

    摘要翻译： 一种装置，其包括位于串联配置的第一和第二光束扫描器之间的投影元件和二维显示平面。 提供一种用于控制第一和第二光束扫描器的装置，以便控制从串联连接的光束扫描器输出到投影元件上的光束的入射角和入射点。 以这种方式，投影元件上的每个点可以映射到显示平面中的一行。 还公开了将投影元件中的点映射到显示平面中的线的方法。

    Spectral-temporal averaging for IEEE 802.11p dynamic channel equalization
    7.
    发明授权
    Spectral-temporal averaging for IEEE 802.11p dynamic channel equalization 有权
    IEEE 802.11p动态信道均衡的频谱平均

    公开(公告)号：US08559537B2

    公开(公告)日：2013-10-15

    申请号：US12778658

    申请日：2010-05-12

    申请人： Joseph Fernandez ,  Daniel D. Stancil ,  Fan Bai

    发明人： Joseph Fernandez ,  Daniel D. Stancil ,  Fan Bai

    IPC分类号： H04B1/10

    CPC分类号： H04L27/2647 ,  H04L25/0206 ,  H04L25/022 ,  H04L25/0232 ,  H04L25/0238

    摘要： A system and method for providing dynamic channel equalization in V2V and V2I communications systems. The method includes separating the channel bandwidth of a message into a plurality of subcarriers having different subcarrier frequencies, where the subcarriers include data subcarriers and pilot subcarriers. The method demodulates the message in the receiver to extract symbols from the message and determines channel estimation frequency responses using a least-squares estimation process and the extracted symbols for the pilot subcarriers. The channel estimation frequency responses of either the pilot subcarriers, the pilot subcarriers and some data subcarriers, or the pilot subcarriers and all data subcarriers are used to generate updated channel estimation frequency responses, and a new channel estimation frequency response is generated for each extracted signal using a previous channel estimation frequency response and the updated channel estimation frequency response. The extracted symbols are equalized using the new channel estimation frequency response.

    摘要翻译： 一种用于在V2V和V2I通信系统中提供动态信道均衡的系统和方法。 该方法包括将消息的信道带宽分离成具有不同子载波频率的多个子载波，其中子载波包括数据子载波和导频子载波。 该方法解调接收机中的消息以从消息中提取符号，并使用最小二乘估计处理和提取的导频子载波的符号来确定信道估计频率响应。 使用导频子载波，导频子载波和一些数据子载波或导频子载波和所有数据子载波的信道估计频率响应来生成更新的信道估计频率响应，并且为每个提取的信号生成新的信道估计频率响应 使用先前的信道估计频率响应和更新的信道估计频率响应。 使用新的信道估计频率响应来均衡所提取的符号。

    System and method for increasing the channel capacity of HVAC ducts for wireless communications in buildings
    8.
    发明授权
    System and method for increasing the channel capacity of HVAC ducts for wireless communications in buildings 有权
    用于增加建筑物无线通信的HVAC管道的通道容量的系统和方法

    公开(公告)号：US06781477B1

    公开(公告)日：2004-08-24

    申请号：US10260918

    申请日：2002-09-30

    申请人： Daniel D. Stancil

    发明人： Daniel D. Stancil

    IPC分类号： H01P512

    CPC分类号： H01P3/12

    摘要： A system for transmitting wireless communications within ductwork. The system includes a plurality of transmitter devices for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation, said transmitter devices comprising a transmitter array, wherein the transmitter devices are configured to introduce the electromagnetic radiation using multiple propagation modes. The system also includes a plurality of receiver devices for detecting the electromagnetic radiation within the ductwork, said receiver devices comprising a receiver array.

    摘要翻译： 用于在管道系统内传输无线通信的系统。 该系统包括多个发射器装置，用于将电磁辐射引入到管道系统中，使得管道系统充当用于电磁辐射的波导，所述发射器装置包括发射器阵列，其中发射器装置被配置成使用多个传播来引入电磁辐射 模式。 该系统还包括用于检测管道系统内的电磁辐射的多个接收器装置，所述接收器装置包括接收器阵列。

    Method and apparatus for incorporating environmental information for mobile communications
    9.
    发明授权
    Method and apparatus for incorporating environmental information for mobile communications 有权
    用于结合移动通信的环境信息的方法和装置

    公开(公告)号：US06625135B1

    公开(公告)日：2003-09-23

    申请号：US09300871

    申请日：1999-04-28

    申请人： David B. Johnson ,  Bernard J. Bennington ,  Daniel D. Stancil

    发明人： David B. Johnson ,  Bernard J. Bennington ,  Daniel D. Stancil

    IPC分类号： H04Q700

    CPC分类号： H04W16/18

    摘要： An apparatus and method for communicating between a first communication node and a second communication node in an area having a plurality of communication nodes is disclosed which comprises generating a propagation model of signals from selected communication nodes in the area. The communication nodes may be fixed or mobile. The propagation model is based on an environmental map that includes the topography of the terrain and structures in the area. The propagation model is generated at selected intervals to provide updated information for predicting the quality of communication at a location at a future time.

    摘要翻译： 公开了一种用于在具有多个通信节点的区域中的第一通信节点和第二通信节点之间进行通信的装置和方法，其包括从所述区域中的所选通信节点生成信号的传播模型。 通信节点可以是固定的或移动的。 传播模式基于包括该地区地形和结构的地形的环境地图。 以选定的间隔生成传播模型，以提供用于预测未来某个地点的通信质量的更新信息。

    Optical frequency shifter using magnetostatic waves
    10.
    发明授权
    Optical frequency shifter using magnetostatic waves 失效
    使用静磁波的光学变频器

    公开(公告)号：US4796983A

    公开(公告)日：1989-01-10

    申请号：US58586

    申请日：1987-06-05

    申请人： Daniel D. Stancil

    发明人： Daniel D. Stancil

    IPC分类号： G02F1/095 ,  G02F2/00 ,  G02F1/09

    CPC分类号： G02F2/00 ,  G02F1/095

    摘要： An optical frequency shifter that uses mode coupling of magnetostatic waves with light having frequency .omega..sub.o from a laser. A controllable external magnetic biasing field and a controlled microwave source are used to independently specify the frequency .omega..sub.q and wavenumber K.sub.q of the magnetostatic wave. As a result, the mode coupling can be maintained over a range of frequencies .omega..sub.q so a shifted beam of light .omega..sub.o .+-..omega..sub.q can be produced.

    摘要翻译： 一种光学移频器，其使用静磁波与来自激光器的频率ω的光的模式耦合。 使用可控外部磁偏置场和受控微波源独立地指定静磁波的频率ωq和波数Kq。 结果，可以在ωq的频率范围内维持模式耦合，从而可以产生移动的光束ωω+/- +/-ωq。