公开(公告)号：US20130328620A1

公开(公告)日：2013-12-12

申请号：US13993117

申请日：2011-08-24

Applicant: Ting Li ,  Zhengfan Zhang ,  Mingyuan Xu ,  Yuxin Wang ,  Tao Liu

Inventor： Ting Li ,  Zhengfan Zhang ,  Mingyuan Xu ,  Yuxin Wang ,  Tao Liu

IPC: G05F3/02

CPC classification number: G05F3/02 ,  G05F3/30

Abstract: The present invention pertains to a voltage reference circuit based on temperature compensation, comprising positive and negative temperature coefficient generating units, temperature compensation circuit, image circuit and voltage divider. In this circuit, Item T is compensated with Item T, and Item T ln(T) is compensated by Item T in (T), which features a well-targeted compensation performance. The circuit outputs a reference voltage with zero temperature coefficient, which is independent to T and T ln (T). The output voltage value could be defined by adjusting the ratio of resistance in voltage divider. The invention provides a voltage reference circuit featuring good compensation, zero temperature coefficient and adjustable output voltage. The invention has a better compensation than the conventional one and a fixed output voltage, and it totally eliminates the temperature coefficient. The invention has wide application in analog IC and digital/analog mixed IC.

Abstract translation: 本发明涉及一种基于温度补偿的电压参考电路，包括正和负温度系数发生单元，温度补偿电路，图像电路和分压器。 在该电路中，项目T用项目T补偿，项目T ln（T）由（T）中的项目T补偿，其特征是目标良好的补偿性能。 该电路输出零温度系数的参考电压，其独立于T和T ln（T）。 输出电压值可以通过调节分压器电阻的比例来定义。 本发明提供了具有良好补偿，零温度系数和可调输出电压的电压参考电路。 本发明具有比常规的更好的补偿和固定的输出电压，并且完全消除了温度系数。 本发明在模拟IC和数字/模拟混合IC方面有广泛的应用。

公开(公告)号：US20110018617A1

公开(公告)日：2011-01-27

申请号：US12509367

申请日：2009-07-24

Applicant: Khin Htoo ,  Feng Pan ,  Byungki Woo ,  Trung Pham ,  Yuxin Wang

Inventor： Khin Htoo ,  Feng Pan ,  Byungki Woo ,  Trung Pham ,  Yuxin Wang

IPC: G05F1/10

CPC classification number: H02M3/073

Abstract: A charge pump circuit for generating an output voltage is described. Charge pump circuits typically have two branches. As the clocks supplying the branches of a charge pump circuit alternate, the output of each branch will alternately provide an output voltage, which are then combined to form the pump output. The techniques described here allow charge to be transferred between the two branches, so that as the capacitor of one branch discharges, it is used to charge up the capacitor in the other branch. An exemplary embodiment using a voltage doubler-type of circuit, with the charge transfer between the branches accomplished using a switch controller by a boosted version of the clock signal, which is provided by a one-sided voltage doubler

Abstract translation: 描述用于产生输出电压的电荷泵电路。 电荷泵电路通常具有两个分支。 当提供电荷泵电路的分支的时钟交替时，每个分支的输出将交替地提供输出电压，然后将其组合以形成泵输出。 这里描述的技术允许在两个分支之间传输电荷，使得当一个分支的电容器放电时，它用于对另一个分支中的电容器充电。 使用倍压型电路的示例性实施例，其中分支之间的电荷转移由使用开关控制器的升压版本的时钟信号完成，其由单侧电压倍增器

公开(公告)号：US07813475B1

公开(公告)日：2010-10-12

申请号：US12401740

申请日：2009-03-11

Applicant: Ziyu Wu ,  Wenbing Yun ,  Peiping Zhu ,  Yuxin Wang ,  Qingxi Yuan ,  Andrei Tkachuk ,  Wanxia Huang ,  Michael Feser

Inventor： Ziyu Wu ,  Wenbing Yun ,  Peiping Zhu ,  Yuxin Wang ,  Qingxi Yuan ,  Andrei Tkachuk ,  Wanxia Huang ,  Michael Feser

IPC: G01N23/04

CPC classification number: G21K7/00 ,  H01J2235/00

Abstract: An x-ray imaging system uses a synchrotron radiation beam to acquire x-ray images and at least one integrated x-ray source. The system has an imaging system including sample stage controlled by linear translation stages, objective x-ray lens, and x-ray sensitive detector system, placed on a fixed optical table and a mechanical translation stage system to switch x-ray sources when synchrotron radiation beam is not available.

Abstract translation: X射线成像系统使用同步加速器辐射束来获取x射线图像和至少一个集成的x射线源。 该系统具有成像系统，包括由线性平移台控制的样本台，物镜X射线透镜和x射线敏感探测器系统，放置在固定的光学平台和机械平移台系统上以在同步加速器辐射时切换x射线源 光束不可用。

公开(公告)号：US20100074033A1

公开(公告)日：2010-03-25

申请号：US12235467

申请日：2008-09-22

Applicant: Feng Pan ,  Yuxin Wang ,  Jonathan H. Huynh ,  Albert Chang ,  Khin Htoo ,  Qui Vi Nguyen

Inventor： Feng Pan ,  Yuxin Wang ,  Jonathan H. Huynh ,  Albert Chang ,  Khin Htoo ,  Qui Vi Nguyen

IPC: G11C5/14 ,  G05F1/10

CPC classification number: G11C8/08 ,  G11C5/147 ,  G11C16/30

Abstract: A circuit and corresponding method for providing a reference voltage are presented. The circuit includes a current source having a magnitude with positive temperature correlation connected to a node, and a diode element connected between the node and ground, where the reference voltage is provided from the node. The circuit also includes a variable resistance connected to receive an input indicative of the circuit temperature and through which the diode element is connected to the node. The value of the variable resistance is adjusted based upon the circuit temperature input. The circuit is useful for application as a peripheral circuitry, such as on a flash or other non-volatile memory and other circuits requiring an on-chip reference voltage source.

Abstract translation: 提出了一种用于提供参考电压的电路和相应的方法。 电路包括具有连接到节点的正温度相关幅度的电流源和连接在节点和地之间的二极管元件，其中从该节点提供参考电压。 电路还包括可变电阻，其连接以接收指示电路温度的输入，并且二极管元件通过该电阻连接到节点。 可变电阻的值根据电路温度输入进行调整。 该电路可用作外围电路，例如闪存或其他非易失性存储器以及需要片上参考电压源的其他电路。

公开(公告)号：US20100073069A1

公开(公告)日：2010-03-25

申请号：US12235474

申请日：2008-09-22

Applicant: Yuxin Wang ,  Feng Pan ,  Byungki Woo ,  Trung Pham ,  Khin Htoo

Inventor： Yuxin Wang ,  Feng Pan ,  Byungki Woo ,  Trung Pham ,  Khin Htoo

IPC: H03K17/14

CPC classification number: H03K17/145 ,  G11C5/143 ,  G11C7/04 ,  G11C2207/2254 ,  H03K2217/0018

Abstract: Techniques and corresponding circuitry for deriving a supply a bias voltage for a memory cell array from a received reference voltage is presented. The circuit includes a voltage determination circuit, which is connected to receive the reference voltage and generate from it the bias voltage, a temperature sensing circuit, and a calibration circuit. The calibration circuit is connected to receive the bias voltage and to receive a temperature indication from the temperature sensing circuit and determine from the bias voltage and temperature indication a compensation factor that is supplied to the voltage determination circuit, which adjusts the bias voltage based upon the compensation factor.

Abstract translation: 提供了用于从接收的参考电压导出用于存储单元阵列的偏置电压的技术和相应的电路。 该电路包括电压确定电路，其连接以接收参考电压并从其产生偏置电压，温度感测电路和校准电路。 连接校准电路以接收偏置电压并从温度检测电路接收温度指示，并根据偏置电压和温度指示确定提供给电压确定电路的补偿因子，该电压确定电路基于 补偿因子。

公开(公告)号：US20080205734A1

公开(公告)日：2008-08-28

申请号：US12029790

申请日：2008-02-12

Applicant: Yuxin Wang ,  Wenbing Yun ,  David Dean Scott

Inventor： Yuxin Wang ,  Wenbing Yun ,  David Dean Scott

IPC: G06K9/00 ,  G01N23/00

CPC classification number: G01N23/046 ,  A61B6/508 ,  G01N2223/419

Abstract: A projection x-ray imaging system that possibly utilizes a laboratory-based micro-focused x-ray source is disclosed. Techniques for optimizing the system for high quality, three dimensional image formation with tomographic imaging with the potential for high resolution and high throughput are described. It also concerns ways to optimize the system design to obtain improved image quality.

Abstract translation: 公开了可能利用基于实验室的微焦点x射线源的投影X射线成像系统。 描述了用于利用具有高分辨率和高吞吐量的潜力的断层成像优化用于高质量三维图像形成的系统的技术。 它还涉及到优化系统设计以获得改进的图像质量的方法。

公开(公告)号：US07412024B1

公开(公告)日：2008-08-12

申请号：US11244825

申请日：2005-10-05

Applicant: Wenbing Yun ,  Yuxin Wang

Inventor： Wenbing Yun ,  Yuxin Wang

IPC: G01N23/087 ,  G01T1/20 ,  H05G1/64

CPC classification number: A61B6/484 ,  A61B6/4092 ,  A61B6/502 ,  G21K2207/005

Abstract: A digital x-ray phase contrast soft tissue imaging and mammography system offers significant cancer detection sensitivity and a significant improvement in accurate detection and interpretation of mammograms. In addition, the proposed system produces digital mammograms and thus has the advantages of digital mammography. The system overcomes the limitation of the current approaches to mammography using phase contrast effects and offers substantially higher performance than the current mammography used in hospitals and clinics. The proposed system uses the phase contrast imaging, in a breast and other soft tissue structures, instead of absorption contrast employed in the current x-ray mammography, allowing detection of smaller disease structures with substantial reduction in radiation dose.

Abstract translation: 数字X射线相位对比软组织成像和乳房X射线摄影系统提供了显着的癌症检测灵敏度和乳腺X线照片的精确检测和解释的显着改进。 此外，所提出的系统产生数字乳腺X线照片，因此具有数字乳腺X线照相术的优点。 该系统克服了使用相位对比效应的乳腺X线照相术的局限性，并提供比目前在医院和诊所使用的乳房X线照相术更好的性能。 所提出的系统在乳腺和其他软组织结构中使用相位对比成像，而不是在目前的X射线乳房X线照相术中使用的吸收对比度，允许以显着降低的辐射剂量检测较小的疾病结构。

公开(公告)号：US20070147583A1

公开(公告)日：2007-06-28

申请号：US11682503

申请日：2007-03-06

Applicant: Yuxin Wang ,  Wenbing Yun ,  David Scott

Inventor： Yuxin Wang ,  Wenbing Yun ,  David Scott

IPC: A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC classification number: G01N23/046 ,  A61B6/508 ,  G01N2223/419

Abstract: A projection x-ray imaging system that possibly utilizes a laboratory-based micro-focused x-ray source is disclosed. Techniques for optimizing the system for high quality, three dimensional image formation with tomographic imaging with the potential for high resolution and high throughput are described. It also concerns ways to optimize the system design to obtain improved image quality.

Abstract translation: 公开了可能利用基于实验室的微焦点x射线源的投影X射线成像系统。 描述了用于利用具有高分辨率和高吞吐量的潜力的断层成像优化用于高质量三维图像形成的系统的技术。 它还涉及到优化系统设计以获得改进的图像质量的方法。

公开(公告)号：US07130375B1

公开(公告)日：2006-10-31

申请号：US11035749

申请日：2005-01-14

Applicant: Wenbing Yun ,  David Dean Scott ,  David R. Trapp ,  Frederick William Duewer ,  Yuxin Wang

Inventor： Wenbing Yun ,  David Dean Scott ,  David R. Trapp ,  Frederick William Duewer ,  Yuxin Wang

IPC: G01N23/20

CPC classification number: G01N23/04 ,  A61B6/508 ,  G01N2223/505 ,  G01N2223/6113

Abstract: A projection-based x-ray imaging system combines projection magnification and optical magnification in order to ease constraints on source spot size, while improving imaging system footprint and efficiency. The system enables tomographic imaging of the sample especially in a proximity mode where the same is held in close proximity to the scintillator. In this case, a sample holder is provided that can rotate the sample. Further, a z-axis motion stage is also provided that is used to control distance between the sample and the scintillator.

Abstract translation: 基于投影的X射线成像系统结合了投影放大倍数和光学放大倍率，以便减轻源光斑尺寸的限制，同时提高成像系统的覆盖面和效率。 该系统使得样品的层析成像特别是在接近模式下，其中相邻的模式保持在闪烁体附近。 在这种情况下，提供可以旋转样品的样品架。 此外，还提供了用于控制样品和闪烁体之间的距离的z轴运动级。

公开(公告)号：US20060163501A1

公开(公告)日：2006-07-27

申请号：US11278836

申请日：2006-04-06

Applicant: Wenbing Yun ,  Yuxin Wang ,  David Trapp

Inventor： Wenbing Yun ,  Yuxin Wang ,  David Trapp

IPC: G01J1/00

CPC classification number: G01T1/2002 ,  G01T1/20

Abstract: A scintillated CCD detector system for imaging x rays uses x-rays having a photon energy in the range of 1 to 20 keV. The detector differs from existing systems in that it provides extremely high resolution of better than a micrometer, and high detection quantum efficiency of up to 95%. The design of this detector also allows it to function as an energy filter to remove high-energy x-rays. This detector is useful in a wide range of applications including x-ray imaging, spectroscopy, and diffraction. The scintillator optical system has scintillator material with a lens system for collecting the light that is generated in the scintillator material. A substrate is used for spacing the scintillator material from the lens system.

Abstract translation: 用于对X射线成像的闪烁CCD检测器系统使用具有在1至20keV范围内的光子能量的X射线。 检测器与现有系统不同之处在于它提供比千分尺更高的分辨率，高达95％的高检测量子效率。 该检测器的设计也可以用作能量过滤器，以去除高能X射线。 该检测器可用于广泛的应用，包括X射线成像，光谱和衍射。 闪烁体光学系统具有闪烁体材料，其具有用于收集闪烁体材料中产生的光的透镜系统。 衬底用于将闪烁体材料与透镜系统间隔开。