Optimized human presence detection through elimination of background interference
    2.
    发明授权
    Optimized human presence detection through elimination of background interference 有权
    通过消除背景干扰优化人体存在检测

    公开(公告)号:US06810135B1

    公开(公告)日:2004-10-26

    申请号:US09607008

    申请日:2000-06-29

    Abstract: A human presence detection system (50) that employs a frame differencing technique for subtracting out background interference from images generated by the system. The system (50) includes an infrared source (28) that generates a beam of infrared radiation, and an infrared detector (72) that receives infrared radiation reflected from objects in the path of the beam. Face recognition software is employed to determine the presence of a person (16) from the reflected radiation. The infrared source (28) is pulsed on and off and the detector (72) is synchronously shuttered to the pulses so that image frames are generated at different times, where one frame includes reflected radiation and background radiation and another frame includes only background radiation. The frames are subtracted to separate out the background radiation. In one embodiment, the detector (72) includes a pixel array of photodiodes (90) and first and second capacitor storage sites (94, 98) for storing the image frames on a single CMOS chip (70). The storage sites (94, 98) are subtracted in a summation device (102) that is also on the CMOS chip (70). In an alternate embodiment, the frames are stored and subtracted at an off-chip site.

    Abstract translation: 一种人类存在检测系统(50),其采用帧差分技术,用于从由系统生成的图像中减去背景干扰。 系统(50)包括产生红外辐射束的红外源(28)和接收从光束路径中的物体反射的红外辐射的红外检测器(72)。 人脸识别软件用于确定人体(16)从反射辐射的存在。 红外源(28)被脉冲打开和关闭,并且检测器(72)被同步地切换到脉冲,使得在不同时间产生图像帧,其中一个帧包括反射的辐射和背景辐射,另一个帧仅包括背景辐射。 减去帧以分离背景辐射。 在一个实施例中,检测器(72)包括用于将图像帧存储在单个CMOS芯片(70)上的光电二极管(90)的像素阵列和第一和第二电容器存储位置(94,98)。 存储位置(94,98)在也在CMOS芯片(70)上的求和装置(102)中减去。 在替代实施例中,帧在芯片外的位置被存储和减去。

    Micro-electro system (MEMS) switch
    3.
    发明授权
    Micro-electro system (MEMS) switch 有权
    微电子系统(MEMS)开关

    公开(公告)号:US6069540A

    公开(公告)日:2000-05-30

    申请号:US418341

    申请日:1999-10-14

    CPC classification number: H01H59/0009 H01P1/127 H01H2059/0027 H01H2059/0054

    Abstract: An RF switch formed as a micro electro-mechanical switch (MEMS) which can be configured in an array forming a micro electro-mechanical switch array (MEMSA). The MEMS is formed on a substrate. A pin, pivotally carried by the substrate defines a pivot point. A rigid beam or transmission line is generally centrally disposed on the pin forming a teeter-totter configuration. The use of a rigid beam and the configuration eliminates the torsional and bending forces of the beam which can reduce reliability. The switch is adapted to be monolithically integrated with other monolithic microwave integrated circuits (MMIC) for example from HBTs and HEMTs, by separating such MMICs from the switch by way of a suitable polymer layer, such as polyimide, enabling the switch to be monolithically integrated with other circuitry. In order to reduce insertion losses, the beam is formed from all metal, which improves the sensitivity of the switch and also allows the switch to be used in RF switching applications. By forming the beam from all metal, the switch will have lower insertion loss than other switches which use SiO2 or mix metal contacts.

    Abstract translation: RF开关形成为可以形成微机电开关阵列(MEMSA)的阵列中的微机电开关(MEMS)。 在基板上形成MEMS。 由基板枢转地承载的销定义枢轴点。 刚性梁或传输线通常居中设置在销上,形成跷跷板构型。 使用刚性梁和该构造消除了可以降低可靠性的梁的扭转和弯曲力。 该开关适于与例如HBT和HEMT的其它单片微波集成电路(MMIC)单片集成,通过诸如聚酰亚胺之类的合适的聚合物层将这种MMIC与开关分离,使得开关能够被单片集成 与其他电路。 为了减少插入损耗,光束由所有金属形成,这提高了开关的灵敏度,并且还允许开关用于RF开关应用中。 通过从所有金属形成光束,开关将具有比使用SiO 2或混合金属触点的其它开关更低的插入损耗。

    Millimeter wave imager device using pyroelectric effect
    4.
    发明授权
    Millimeter wave imager device using pyroelectric effect 失效
    毫米波成像仪采用热电效应

    公开(公告)号:US5530247A

    公开(公告)日:1996-06-25

    申请号:US286736

    申请日:1994-08-05

    CPC classification number: H01L27/16

    Abstract: A passive millimeter-wave imaging system configured as an integrated circuit. The imaging system incorporates a lens which focuses radiation from a scene onto a detector in the focal plane of the lens. The detector includes an outer array of ferroelectric elements in which each element includes a top metal film and a ferroelectric layer. Millimeter-wave radiation from the beam causes charge build-up in the ferroelectric layers. The charge build-up is sensed by appropriate amplification and signal processing circuitry associated with the read-out electronics so as to provide a signal indicative of obstacles in the scene to a video system. The ferroelectric layer can also be used as an antenna for each pixel element.

    Abstract translation: 被动毫米波成像系统配置为集成电路。 成像系统包括将来自场景的辐射聚焦到透镜的焦平面中的检测器的透镜。 检测器包括铁电元件的外部阵列,其中每个元件包括顶部金属膜和铁电层。 来自光束的毫米波辐射导致铁电层中的电荷积聚。 通过与读出的电子设备相关联的适当的放大和信号处理电路感测电荷积聚,以便向视频系统提供指示场景中的障碍物的信号。 铁电层也可以用作每个像素元件的天线。

    Tire and suspension warning and monitoring system
    5.
    发明授权
    Tire and suspension warning and monitoring system 有权
    轮胎和悬挂警告和监控系统

    公开(公告)号:US06759952B2

    公开(公告)日:2004-07-06

    申请号:US09900324

    申请日:2001-07-06

    CPC classification number: G01M17/04 G01M17/02 Y10T152/10009

    Abstract: A tire and suspension monitoring and warning system consisting of a set of multi-function sensors that monitor and warn of a failure mode. The system monitors and warns for tire imbalance, tire tread wear, and shock absorbers for a tire attached to a vehicle. The monitoring and warning system includes one axial, radial, and lateral acceleration measurement of the wheel to provide acceleration signal sample power. For tire imbalance, signal sample power in the second harmonic of the tire rotational frequency is compared to that of the first harmonic. For tire tread wear, average signal sample power within a second frequency range is compared to a previously stored baseline value. For shock absorber performance, a sum of all frequency components in a second predetermined frequency range is compared to a baseline value.

    Abstract translation: 一种轮胎和悬架监控和警告系统,由一组监控和警告故障模式的多功能传感器组成。 系统监测和警告轮胎不平衡,轮胎胎面磨损以及连接到车辆的轮胎的减震器。 监测和报警系统包括轮子的一个轴向,径向和横向加速度测量,以提供加速度信号采样功率。 对于轮胎不平衡,将轮胎转速的二次谐波中的信号采样功率与一次谐波的信号采样功率进行比较。 对于轮胎胎面磨损,将第二频率范围内的平均信号采样功率与先前存储的基准值进行比较。 对于减震器性能,将第二预定频率范围中的所有频率分量的总和与基线值进行比较。

    Application of human facial features recognition to automobile safety
    6.
    发明授权
    Application of human facial features recognition to automobile safety 失效
    人脸特征识别在汽车安全中的应用

    公开(公告)号:US06724920B1

    公开(公告)日:2004-04-20

    申请号:US09621160

    申请日:2000-07-21

    Abstract: An imaging system (50) for providing vehicle safety features that employs face recognition software to identify and track a person. The system (50) employs infrared emitters (30) that emit an infrared signal along a predetermined field-of-view, and an infrared sensor (34), such as a CMOS sensor used as a video signal array, that receives reflected infrared illumination from objects in the field-of-view. A processor (52) including the face recognition software, is employed to detect human faces to identify and track the person. Once a face is detected, it can be compared to a data base to identify the person. Various applications for the imaging system (50) for providing vehicle safety features include identifying the driver or passenger for personalizing the vehicle's airbags, providing pre-crash collision avoidance, providing blind spot detection, providing vehicle crash recording, and providing a warning signal if the driver appears drowsy.

    Abstract translation: 一种用于提供使用人脸识别软件识别和跟踪人的车辆安全特征的成像系统(50)。 系统(50)采用沿着预定视场发射红外信号的红外发射器(30),以及用作视频信号阵列的红外传感器(34),其被用作接收反射的红外照明 从视野中的对象。 使用包括人脸识别软件的处理器(52)来检测人脸以识别和跟踪人物。 一旦检测到脸部,就可以将其与数据库进行比较,以识别人物。 用于提供车辆安全特征的成像系统(50)的各种应用包括识别驾驶员或乘客个性化车辆的安全气囊,提供碰撞预防碰撞,提供盲点检测,提供车辆碰撞记录,以及如果 司机似昏昏欲睡

    Composite quantum well infrared detector
    7.
    发明授权
    Composite quantum well infrared detector 失效
    复合量子阱红外探测器

    公开(公告)号:US5239186A

    公开(公告)日:1993-08-24

    申请号:US750134

    申请日:1991-08-26

    CPC classification number: B82Y20/00 H01L31/035236 Y10S977/759

    Abstract: This invention discloses a multiple quantum well infrared detector comprising a series of alternating layers of blocking layers and composite well layers. Each composite well layer is comprised of alternating layers of GaAs and AlGaAs forming a tightly coupled well group. The tightly coupled well group allows more allowed states for an electron released from the valence bands of the gallium arsenide semiconductor material. Consequently, there is a wider band width of detectable infrared radiation by the composite wall structure over the single well of the prior art.

    Abstract translation: 本发明公开了一种多量子阱红外检测器,其包括一系列交替层的阻挡层和复合阱层。 每个复合阱层由形成紧密耦合的阱组的GaAs和AlGaAs的交替层组成。 紧密耦合的阱组允许从砷化镓半导体材料的价带释放的电子的更允许的状态。 因此,在现有技术的单井中,通过复合壁结构具有更宽的可检测的红外线辐射带宽。

    Monolithic fast fourier transform circuit
    8.
    发明授权
    Monolithic fast fourier transform circuit 失效
    单片快速傅里叶变换电路

    公开(公告)号:US4547862A

    公开(公告)日:1985-10-15

    申请号:US338733

    申请日:1982-01-11

    CPC classification number: G06F17/142

    Abstract: A fast Fourier transform circuit formed on a single chip, including a fast multiplier-accumulator circuit which, in the preferred embodiment, employs a modified form of Booth's algorithm, an adder circuit, a read-only memory for storing FFT twiddle factors, and a random access memory for holding a set of input complex quantities and for receiving intermediate and final results in an in-place FFT operation. In the preferred embodiment, the FFT twiddle factors are stored in Booth's code for greater speed of operation. Control and timing circuitry on the same chip generates control signals and address codes in order to perform a sequence of butterfly computations by repeated use of the multiplier-accumulator and adder circuits, to generate FFT coefficients in the random access memory.

    Abstract translation: 一种形成在单个芯片上的快速傅里叶变换电路,包括一个快速乘法器 - 累加电路,该电路在优选实施例中采用Booth算法的修改形式,加法电路,用于存储FFT旋转因子的只读存储器,以及 随机存取存储器,用于保持一组输入复数量并用于在现场FFT操作中接收中间和最终结果。 在优选实施例中,FFT旋转因子存储在Booth的代码中以获得更高的操作速度。 同一芯片上的控制和定时电路产生控制信号和地址码,以通过重复使用乘法器累加器和加法器电路来执行蝶形运算序列,以在随机存取存储器中产生FFT系数。

    Tire and suspension warning and monitoring system
    9.
    发明授权
    Tire and suspension warning and monitoring system 有权
    轮胎和悬挂警告和监控系统

    公开(公告)号:US07443288B2

    公开(公告)日:2008-10-28

    申请号:US10854351

    申请日:2004-05-26

    CPC classification number: G01M17/04 G01M17/02 Y10T152/10009

    Abstract: A tire and suspension monitoring and warning system consisting of a set of multi-function sensors that monitor and warn of a failure mode. The system monitors and warns for tire imbalance, tire tread wear, and shock absorbers for a tire attached to a vehicle. The monitoring and warning system includes one axial, radial, and lateral acceleration measurement of the wheel to provide acceleration signal sample power. For tire imbalance, signal sample power in the second harmonic of the tire rotational frequency is compared to that of the first harmonic. For tire tread wear, average signal sample power within a second frequency range is compared to a previously stored baseline value. For shock absorber performance, a sum of all frequency components in a second predetermined frequency range is compared to a baseline value.

    Abstract translation: 一种轮胎和悬架监控和警告系统,由一组监控和警告故障模式的多功能传感器组成。 系统监测和警告轮胎不平衡,轮胎胎面磨损以及连接到车辆的轮胎的减震器。 监测和报警系统包括轮子的一个轴向,径向和横向加速度测量,以提供加速度信号采样功率。 对于轮胎不平衡,轮胎转速的二次谐波中的信号采样功率与第一谐波的信号采样功率进行比较。 对于轮胎胎面磨损,将第二频率范围内的平均信号采样功率与先前存储的基准值进行比较。 对于减震器性能,将第二预定频率范围中的所有频率分量的总和与基线值进行比较。

    Method and system for improving camera infrared sensitivity using digital zoom
    10.
    发明授权
    Method and system for improving camera infrared sensitivity using digital zoom 失效
    使用数码变焦提高相机红外线灵敏度的方法和系统

    公开(公告)号:US06420704B1

    公开(公告)日:2002-07-16

    申请号:US09732429

    申请日:2000-12-07

    CPC classification number: H04N5/23296 G01J5/02 H04N5/2354 H04N5/33

    Abstract: A system for providing recognition of an approaching object located in a distant no-light environment includes an illumination source for transmitting light to the distant object and an imaging device for detecting the light radiation reflected from the distant object to generate an image of the distant object corresponding thereto. The system also includes an independent digital signal processor for calculating a desired optical magnification of a lens of the imaging device as a function of a distance between the imaging device and the distant object and generates a voltage corresponding thereto. The digital signal processor applies the voltage to the digital zoom circuitry of the imaging device to adjust the magnification of the lens so that the image of the distant object is held in a fixed dimension.

    Abstract translation: 用于提供对位于遥远的无光环境中的接近物体的识别的系统包括用于将光传输到远距离物体的照明源和用于检测从远距离物体反射的光辐射的成像装置以产生远距离物体的图像 对应于此。 该系统还包括独立的数字信号处理器,用于根据成像装置和远距离物体之间的距离来计算成像装置的透镜的期望光学倍率,并产生与其对应的电压。 数字信号处理器将电压施加到成像装置的数字变焦电路,以调整透镜的放大倍率,使得远距离物体的图像保持固定的尺寸。

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