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    Photodiode CMOS imager with column-feedback soft-reset for imaging under ultra-low illumination and with high dynamic range
    2.
    发明授权
    Photodiode CMOS imager with column-feedback soft-reset for imaging under ultra-low illumination and with high dynamic range 有权
    光电二极管CMOS成像器，具有柱反馈软复位，可在超低照度和高动态范围内成像

    公开(公告)号：US07746383B2

    公开(公告)日：2010-06-29

    申请号：US10779144

    申请日：2004-02-12

    申请人： Bedabrata Pain ,  Thomas J. Cunningham ,  Bruce Hancock ,  Suresh Seshadri ,  Monico Ortiz ,  Guang Yang

    发明人： Bedabrata Pain ,  Thomas J. Cunningham ,  Bruce Hancock ,  Suresh Seshadri ,  Monico Ortiz ,  Guang Yang

    IPC分类号： H04N5/225 ,  H04N5/217 ,  H04N3/14 ,  H04N5/335

    CPC分类号： H04N5/363 ,  H04N5/357

    摘要： The present invention provides a CMOS imager with a reset scheme, by which a CMOS imager generates a sub-kTC noise so that read noise does not depend on the sense node capacitance. By using a column feedback circuit, reset noise can be suppressed to a negligible amount so that photogate APS or CCD-like circuits can achieve noise performance to very efficient value. This scheme allows increasing sense node capacitance without increasing the noise and also achieves a large full-well value without sacrificing read noise performance. The feedback circuit in one of the embodiment of the present invention is located at the column side of the circuit. This design provides a minimal change to the pixel. As a result quantum efficiency or pixel size is not compromised. The present invention allows a CMOS imager to capture scene with high intra-scene contracts under low illumination with high dynamic range.

    摘要翻译： 本发明提供了具有复位方案的CMOS成像器，CMOS成像器通过该方法产生子kTC噪声，使得读取噪声不依赖于感测节点电容。 通过使用列反馈电路，可以将复位噪声抑制到可忽略的量，使得光栅APS或类CCD电路可以实现非常有效的噪声性能。 该方案允许增加感测节点电容，而不增加噪声，并且还可以实现大的全阱值而不牺牲读取噪声性能。 本发明实施例之一的反馈电路位于电路的列侧。 此设计为像素提供了最小的变化。 因此量子效率或像素大小不会受到影响。 本发明允许CMOS成像器在具有高动态范围的低照度下捕获具有高的场景内契约的场景。

    Hazardous fluid leak detector
    4.
    发明授权
    Hazardous fluid leak detector 失效
    危险液体检漏仪

    公开(公告)号：US5517181A

    公开(公告)日：1996-05-14

    申请号：US289342

    申请日：1994-08-10

    申请人： Harold E. Gray ,  Felder M. McLaurin ,  Monico Ortiz ,  William A. Huth

    发明人： Harold E. Gray ,  Felder M. McLaurin ,  Monico Ortiz ,  William A. Huth

    IPC分类号： G01N27/06 ,  G01N27/416 ,  G08B21/00

    CPC分类号： G01N27/4162 ,  G01N27/06

    摘要： A device or system for monitoring for the presence of leaks from a hazardous fluid is disclosed which uses two electrodes immersed in deionized water. A gas is passed through an enclosed space in which a hazardous fluid is contained. Any fumes, vapors, etc. escaping from the containment of the hazardous fluid in the enclosed space are entrained in the gas passing through the enclosed space and transported to a closed vessel containing deionized water and two electrodes partially immersed in the deionized water. The electrodes are connected in series with a power source and a signal, whereby when a sufficient number of ions enter the water from the gas being bubbled through it (indicative of a leak), the water will begin to conduct, thereby allowing current to flow through the water from one electrode to the other electrode to complete the circuit and activate the signal.

    摘要翻译： 公开了一种用于监测来自危险流体的泄漏的装置或系统，其使用浸入去离子水中的两个电极。 气体通过包含有害流体的封闭空间。 任何从封闭空间内的危险液体容纳物中排出的烟雾，蒸汽等被夹带在通过封闭空间的气体中，并被运送到包含去离子水和部分浸没在去离子水中的两个电极的密封容器中。 电极与电源和信号串联连接，从而当足够数量的离子从被鼓泡通过的气体（指示泄漏）进入水中时，水将开始导通，从而允许电流流动 通过水从一个电极到另一个电极完成电路并激活信号。