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    • 56. 发明授权
    • Compact document imager
    • 小型文件成像仪
    • US5920401A
    • 1999-07-06
    • US570193
    • 1995-12-11
    • Robert A. StreetIchiro FujiedaSteven Edward NelsonLeonard Eugene Fennell
    • Robert A. StreetIchiro FujiedaSteven Edward NelsonLeonard Eugene Fennell
    • H04N1/04G06T1/00H04N1/00H04N1/024H04N1/46
    • H04N1/00129H04N1/00127H04N1/00525H04N1/024H04N1/02805H04N1/195H04N2201/043H04N2201/0436
    • The compact document imager and display apparatus has a two-dimensional image sensor array, a flat panel display such as a liquid crystal display (LCD), and processing electronics. An illumination source can be added to illuminate the document on the sensor array and to provide backlight for the LCD. Color imaging may be achieved by providing three sequential illumination pulses of appropriate colors. A document is placed in close contact with the sensor array. The document is illuminated and an electronic image is captured and stored in the processing electronics. The captured image can be displayed on the LCD by the processing electronics. The document, such as a single sheet of paper or a transparency, can be illuminated by the room light to perform image capture. The compact document imager can be used as a facsimile machines by providing telephone connections. Documents can be scanned using the sensor array and sent to other devices. Documents can be received from other sources and displayed on the LCD. A light-pen can be used to generate handwritten documents or highlight portions of documents. An X-ray imaging device is created by placing a thin phosphor sheet in contact with the sensor array. The x-ray imaging device is placed over an object illuminated by X-rays and the image produced by the glowing phosphorous is stored and displayed by the LCD.
    • 紧凑型文档成像器和显示装置具有二维图像传感器阵列,诸如液晶显示器(LCD)的平板显示器和处理电子器件。 可以添加照明源以照亮传感器阵列上的文档并为LCD提供背光。 可以通过提供适当颜色的三个顺序照明脉冲来实现彩色成像。 一个文件与传感器阵列紧密接触。 文件被照亮并且电子图像被捕获并存储在处理电子器件中。 捕获的图像可以通过处理电子元件显示在LCD上。 文档,例如单张纸或透明度,可以被房间的光照亮以进行图像捕获。 通过提供电话连接,小型文档成像器可以用作传真机。 文件可以使用传感器阵列扫描并发送到其他设备。 文件可以从其他来源接收并显示在LCD上。 光笔可用于生成手写文件或突出显示部分文件。 通过将薄的荧光体片放置成与传感器阵列接触来产生X射线成像装置。 X射线成像装置放置在由X射线照射的物体上,由发光的磷产生的图像由LCD存储和显示。
    • 59. 发明授权
    • High resolution amorphous silicon radiation detectors
    • 高分辨率非晶硅辐射探测器
    • US5117114A
    • 1992-05-26
    • US448240
    • 1989-12-11
    • Robert A. StreetSelig N. KaplanVictor Perez-Mendez
    • Robert A. StreetSelig N. KaplanVictor Perez-Mendez
    • G01T1/20G01T1/24H01L31/0232H01L31/117
    • H01L31/0232G01T1/2018H01L31/02322H01L31/117Y10S257/926
    • A radiation detector employing amorphous Si:H cells in an array with each detector cell having at least three contiguous layers (n type, intrinsic, p type), positioned between two electrodes to which a bias voltage is applied. An energy conversion layer atop the silicon cells intercepts incident radiation and converts radiation energy to light energy of a wavelength to which the silicon cells are responsive. A read-out device, positioned proximate to each detector element in an array allows each such element to be interrogated independently to determine whether radiation has been detected in that cell. The energy conversion material may be a layer of luminescent material having a columnar structure. In one embodiment a column of luminescent material detects the passage therethrough of radiation to be detected and directs a light beam signal to an adjacent a-Si:H film so that detection may be confined to one or more such cells in the array. One or both electrodes may have a comb structure, and the teeth of each electrode comb may be interdigitated for capacitance reduction. The amorphous Si:H film may be replaced by an amorphous Si:Ge:H film in which up to 40 percent of the amorphous material is Ge. Two dimensional arrays may be used in X-ray imaging, CT scanning, crystallography, high energy physics beam tracking, nuclear medicine cameras and autoradiography.
    • 一种辐射检测器,其采用阵列中的非晶Si:H电池,其中每个检测器单元具有至少三个相邻层(n型,本征型,p型),位于施加有偏置电压的两个电极之间。 硅单元顶部的能量转换层拦截入射辐射,并将辐射能转换成硅单元响应的波长的光能。 位于阵列中的每个检测器元件附近的读出装置允许独立地询问每个这样的元件以确定是否在该单元中检测到辐射。 能量转换材料可以是具有柱状结构的发光材料层。 在一个实施例中,一列发光材料检测待检测的辐射的通过,并将光束信号引导到相邻的a-Si:H膜,使得检测可以局限于阵列中的一个或多个这样的单元。 一个或两个电极可以具有梳状结构,并且每个电极梳的齿可以相互交叉以减少电容。 非晶Si:H膜可以由非晶Si:Ge:H膜替代,其中高达40%的无定形材料是Ge。 二维阵列可用于X射线成像,CT扫描,晶体学,高能物理光束跟踪,核医学相机和放射自显影。
    • 60. 发明授权
    • Image forming apparatus with a TFT backplane for xerography without a light source
    • 具有用于无光源的静电复印的TFT背板的图像形成装置
    • US08854403B2
    • 2014-10-07
    • US12366680
    • 2009-02-06
    • Vladislav SkorokhodGregory McGuireRobert A. Street
    • Vladislav SkorokhodGregory McGuireRobert A. Street
    • B41J2/39B41J2/395G03G15/32
    • B41J2/39G03G15/32
    • Systems and methods are described that facilitate using TFT control of electronic discharge for surface potential reduction and latent image formation on an imaging member. Corona charging is performed to first create a background surface potential, followed by selective discharge of individual pixels using an array of TFTs to supply free charge carriers to reduce the electrostatic surface potential to nearly zero. This is followed by discharged area development (DAD) to develop the latent image on a print medium (e.g., paper). The described systems and methods do not require a HVPS to drive the backplane; therefore, the TFT matrix is electrostatically decoupled from the developer and other system components in direct contact with the imaging member. Accordingly, known addressing systems may be used to address the TFT array.
    • 描述了有助于使用电子放电的TFT控制来在成像构件上进行表面电位降低和潜像形成的系统和方法。 执行电晕充电以首先产生背景表面电位,随后使用TFT阵列选择性地放电各个像素,以提供免费电荷载流子,以将静电表面电位降低到接近零。 随后是放电区域开发(DAD),以在打印介质(例如纸)上显影潜像。 所描述的系统和方法不需要HVPS来驱动背板; 因此,TFT矩阵与显影剂和与成像构件直接接触的其它系统部件静电分离。 因此,已知的寻址系统可以用于寻址TFT阵列。