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41. 发明授权

US06556300B2 Color imager bar based spectrophotometer photodetector optical orientation 有权
公开(公告)号：US06556300B2
公开(公告)日：2003-04-29
申请号：US09863042
申请日：2001-05-22
申请人： Jagdish C. Tandon , Lingappa K. Mestha , Fred F. Hubble, III
发明人： Jagdish C. Tandon , Lingappa K. Mestha , Fred F. Hubble, III
IPC分类号： G01N2125
CPC分类号： H04N1/6033 , G01J3/501 , G01J3/513 , G01J3/524 , G03G15/01 , G03G2215/00063 , G03G2215/00067
摘要： A color spectrophotometer incorporating a low cost commercial imaging chip, which normally forms part of a document imaging bar used for imaging documents in scanners, etc., having multiple photo-sites with three different rows of color filters. Each chip is mounted on the optical axis of an imaging lens system, in the image plane of that lens system, to image the reflected illumination from an illuminated color test target area on the chip. The optical axis of the imaging lens system is oriented at 45° to the illuminated color test patches, and the photodetector chip is physically mounted perpendicular to the plane of the illuminated color test patches. Respective photo-sensor chips and associated 1:1 optics may be mounted on opposing sides of the spectrophotometer physically oriented at 90° to the test target area plane receiving the reflected light from the test target optically oriented at 45° to the illuminated test target.

42. 发明授权

US06396596B1 Readout system for a full-color image input scanner having three linear arrays of photosensors 有权
标题翻译：具有三个光电传感器线性阵列的全色图像输入扫描仪的读出系统
公开(公告)号：US06396596B1
公开(公告)日：2002-05-28
申请号：US09563031
申请日：2000-05-01
申请人： Paul A. Hosier , Scott L. Tewinkle , Jagdish C. Tandon , Thomas R. Beikirch
发明人： Paul A. Hosier , Scott L. Tewinkle , Jagdish C. Tandon , Thomas R. Beikirch
IPC分类号： G06F1500
CPC分类号： H04N1/486
摘要： In a full-color image scanner having three parallel linear arrays of photosensors, each linear array of photosensors is sensitive to one primary color. With each readout cycle relating to a row of small areas on an original image moving past the scanner, the middle array of the three arrays of photosensors reads out its video data before the other two. This technique allows the arrays of photosensors to be spaced relatively close to each other, and in turn the close spacing of photosensors requires relatively fewer scan lines of video data to be temporarily buffered in the readout process.
摘要翻译：在具有三个光电传感器的平行线性阵列的全色图像扫描仪中，光电传感器的每个线性阵列对一种原色敏感。在每个读出周期与原始图像上的一行小区域相关的扫描仪上移动，三个光电传感器阵列的中间阵列在其他两个之前读出其视频数据。这种技术允许光电传感器的阵列彼此相对接近，反过来，光电传感器的紧密间隔需要在读出过程中临时缓冲的视频数据的相对较少的扫描线。

43. 发明授权

US5029020A Scanner with slow scan image context processing 失效
标题翻译：扫描仪与慢扫描图像上下文处理
公开(公告)号：US5029020A
公开(公告)日：1991-07-02
申请号：US437730
申请日：1989-11-17
申请人： Paul D. Norder , Jagdish C. Tandon , Ying-wei Lin , Anthony F. Calarco
发明人： Paul D. Norder , Jagdish C. Tandon , Ying-wei Lin , Anthony F. Calarco
IPC分类号： H04N1/028 , H04N1/04 , H04N1/10 , H04N1/107 , H04N1/19 , H04N1/191
CPC分类号： H04N1/1911 , H04N2201/0414 , H04N2201/0468
摘要： A scanner-printer of the type that scans and prints in blocks, each block consisting of a preset number of image lines, in which the block of lines scanned by the scanning array is larger than the block of lines printed by a printing array so that there is provided additional image scan lines before and after each block of image lines printed, the additional image scan lines providing image context data for use in processing image signals adjacent the boundaries between blocks of image lines.

44. 发明授权

US4698131A Replaceable image sensor array 失效
标题翻译：可更换图像传感器阵列
公开(公告)号：US4698131A
公开(公告)日：1987-10-06
申请号：US808799
申请日：1985-12-13
申请人： Mehdi N. Araghi , Jagdish C. Tandon
发明人： Mehdi N. Araghi , Jagdish C. Tandon
IPC分类号： H01L21/306 , H01L27/144 , H01L27/146 , H04N1/028 , B44C1/22
CPC分类号： H01L21/30608 , H01L27/1446 , H01L27/146
摘要： An image sensor array and method of fabrication which facilitates replacement of a defective one in a series of arrays butted together to form a longer scanning array in which a (110) silicon wafer having a row of photosites has separation lines etched thereon by orientation dependent etching along the (111) planes, with the separation lines for the opposite ends of the array each consisting of first and second partial boundary lines longitudinally offset from one another connected by a third boundary line so that the ends of the array have a has a generally L-shaped offset permitting bi-directional separating and aligned inserting movement when replacing a defective array.In a second embodiment, the arrays are formed on (100) silicon with alternating `nail` head and `mesa` head shapes to facilitate removal and replacement of a defective array.
摘要翻译：一种图像传感器阵列和制造方法，其有助于将一系列阵列中的有缺陷的阵列对接在一起以形成更长的扫描阵列，其中具有一排光泽的（110）硅晶片具有通过取向相关蚀刻在其上蚀刻的分离线沿着（111）平面，阵列的相对端的分隔线每一个由第一和第二部分边界线组成，第一和第二部分边界线彼此纵向彼此相互连接，由第三边界线连接，使得阵列的端部具有通常 L形偏移允许在更换有缺陷的阵列时双向分离和对准插入运动。在第二实施例中，阵列形成在具有交替“钉头”和“台面”头形状的（100）硅上，以便于去除和更换缺陷阵列。

45. 发明授权

US4091379A Analog to digital wave shaping system 失效
标题翻译：模拟数字波形整形系统
公开(公告)号：US4091379A
公开(公告)日：1978-05-23
申请号：US682245
申请日：1976-05-03
申请人： Paul S. Wu , Jagdish C. Tandon
发明人： Paul S. Wu , Jagdish C. Tandon
IPC分类号： G06K7/00 , G06K7/10 , H03K5/01 , H03K5/08 , H04N1/403
CPC分类号： G06K7/10851 , H03K5/082 , H04N1/403
摘要： An analog to digital wave shaping system comprising, a source of analog signals, adaptive threshold circuitry coupled to said source, said adaptive threshold circuitry having an output selected as a function of the intensity of said analog signal compared to a fixed intensity signal, and, comparator circuitry coupled to said source and to the output of said adaptive threshold circuitry.
摘要翻译：一种模拟数字波形整形系统，包括模拟信号源，耦合到所述源的自适应阈值电路，所述自适应阈值电路具有与固定强度信号相比作为所述模拟信号的强度的函数选择的输出，耦合到所述源和所述自适应阈值电路的输出的比较器电路。

46. 发明授权

US07518759B2 Readout system for a CMOS-based image sensor array 失效
标题翻译：用于CMOS图像传感器阵列的读出系统
公开(公告)号：US07518759B2
公开(公告)日：2009-04-14
申请号：US10421010
申请日：2003-04-22
申请人： Paul A. Hosier , Scott L. TeWinkle , Jagdish C. Tandon , Pravin N. Kothari
发明人： Paul A. Hosier , Scott L. TeWinkle , Jagdish C. Tandon , Pravin N. Kothari
IPC分类号： H04N1/04
CPC分类号： H04N5/3692 , H04N5/357 , H04N5/3745
摘要： In an image sensor having a plurality of photodiodes, subsets of photodiodes share a common node for signals to be sent to an amplifier. Within each subset, each individual photodiode is selected for sending signals to the amplifier by an associated selection device. The selection device is a MOS device operating in a linear region. The subset of photodiodes share a common “fill and spill” or “bucket brigade” transfer circuit to the amplifier, the transfer circuit including at least one MOS device which operates in a subthreshold region.
摘要翻译：在具有多个光电二极管的图像传感器中，光电二极管的子集共享用于发送到放大器的信号的公共节点。在每个子集内，选择每个单独的光电二极管用于通过相关联的选择装置向放大器发送信号。选择装置是在线性区域中操作的MOS器件。光电二极管的子集共享一个共同的“填充和溢出”或“桶旅”传输电路到放大器，传输电路包括在亚阈值区域中工作的至少一个MOS器件。

47. 发明授权

US07446907B2 Photosensor architecture for a color raster input scanner 有权
标题翻译：用于彩色光栅输入扫描仪的光电传感器架构
公开(公告)号：US07446907B2
公开(公告)日：2008-11-04
申请号：US10420989
申请日：2003-04-22
申请人： Paul A. Hosier , Jagdish C. Tandon , Scott L. TeWinkle
发明人： Paul A. Hosier , Jagdish C. Tandon , Scott L. TeWinkle
IPC分类号： H04N1/04
CPC分类号： H04N9/045 , H04N1/03 , H04N5/3692
摘要： In an image sensor array, as would be used in an input scanner such as in a digital copier, an original image is moved relative to a linear array of photosites. Each photosite includes at least two wide photosensors, each of which extends substantially across the photosite along the array direction, and at least two narrow photosensors, which are arranged next to each other along the array direction. In one embodiment, the wide photosensors include primary-color filters and the narrow photosensors are clear-filtered.
摘要翻译：在图像传感器阵列中，如在诸如数字复印机的输入扫描仪中所使用的那样，原始图像相对于光线的线性阵列移动。每个光斑包括至少两个宽的光电传感器，每个光传感器沿着阵列方向基本上延伸穿过光子，以及至少两个沿着阵列方向彼此相邻布置的窄光电传感器。在一个实施例中，宽光传感器包括原色滤色器，并且窄光传感器被清除滤波。

48. 发明申请

US20080173799A1 Optical element for a document illuminator 有权
标题翻译：用于文件照明器的光学元件
公开(公告)号：US20080173799A1
公开(公告)日：2008-07-24
申请号：US11657182
申请日：2007-01-24
申请人： Robert P. Herloski , Jagdish C. Tandon , Douglas E. Proctor , Stephen J. Wenthe , Eugene A. Rogalski , Jeffrey L. Baniak , Paul A. Hosier
发明人： Robert P. Herloski , Jagdish C. Tandon , Douglas E. Proctor , Stephen J. Wenthe , Eugene A. Rogalski , Jeffrey L. Baniak , Paul A. Hosier
IPC分类号： H01J3/14 , H01J40/14 , H01J5/16
CPC分类号： G02B19/0066 , G02B19/0028 , H04N1/02815 , H04N1/02865
摘要： An apparatus for recording an image on a sheet comprises a linear array of light sources and an optical element for transmitting light emitted from the light sources. The optical element comprises a light-transmissive member, having an entry surface for disposal near the light sources. The entry surface defines at least one set of prisms. The optical element can further define a DCPC (dielectric compound parabolic concentrator) in cross-section. Collection optics, such as a SELFOC® lens, receives light reflected from the sheet. Each prism of the optical element defines an angle whereby light exiting the optical element is outside the acceptance angle of the collection optics.
摘要翻译：用于在片材上记录图像的装置包括光源的线性阵列和用于透射从光源发射的光的光学元件。光学元件包括透光构件，具有用于在光源附近处置的入口表面。进入表面限定至少一组棱镜。光学元件可以进一步限定DCPC（介电复合抛物面聚光器）的横截面。收集光学元件，例如SELFOC（R）透镜）接收从片材反射的光。光学元件的每个棱镜限定了一个角度，由此离开光学元件的光在收集光学器件的接收角之外。

49. 发明授权

US06975949B2 Full width array scanning spectrophotometer 失效
标题翻译：全宽阵列扫描分光光度计
公开(公告)号：US06975949B2
公开(公告)日：2005-12-13
申请号：US10833231
申请日：2004-04-27
申请人： Lalit K. Mestha , Jagdish C. Tandon , Steven B. Bolte
发明人： Lalit K. Mestha , Jagdish C. Tandon , Steven B. Bolte
IPC分类号： G01J3/10 , G01J3/50 , G01R23/16 , G01J3/51 , G01N21/25 , G03B27/00
CPC分类号： G01J3/50 , G01J3/501 , G01N21/255 , G01N2201/0627
摘要： A full width array spectrophotometer for full width scanning color analysis of color test targets, with one or two substantially linear elongated arrays of closely spaced multiple LED illumination sources of plural different color emissions in a multiply repeated pattern of at least three or four different colors transversely spanning a printer paper path and sequentially illuminated to illuminate a transverse band across a printed sheet moving in the paper path, and a corresponding elongated low cost light imaging bar with a parallel and correspondingly elongated array of multiple closely spaced different color sensitive (three or four rows of color-filtered) photodetectors, which imaging bar is positioned to detect and analyze light reflected from the transverse sequentially illuminated band.
摘要翻译：全宽阵列分光光度计，用于彩色测试目标的全宽度扫描颜色分析，具有一个或两个基本上线性的细长阵列，其具有多个不同颜色的多个LED照明源，具有至少三个或四个不同颜色的多重重复图案横向跨越打印机纸路径并顺序照亮以照射在纸路径中移动的印刷片材上的横向带，以及相应的细长的低成本光成像条，其具有多个紧密间隔的不同颜色敏感（三或四个）的平行和相应细长的阵列行彩色滤波的）光电检测器，其成像条被定位成检测和分析从横向顺序照射的带反射的光。

50. 发明授权

US06646247B2 Photosensitive apparatus in which an initial charge on a photodiode is sampled and the retransferred to the photodiode 失效
标题翻译：对光电二极管上的初始电荷进行采样并重新传输到光电二极管的感光装置
公开(公告)号：US06646247B2
公开(公告)日：2003-11-11
申请号：US09815407
申请日：2001-03-22
申请人： Paul A. Hosier , Jagdish C. Tandon
发明人： Paul A. Hosier , Jagdish C. Tandon
IPC分类号： H01N138
CPC分类号： H04N5/37452 , H01L27/14831 , H04N5/361 , H04N5/363 , H04N5/365 , H04N5/3745
摘要： In a photosensitive device wherein a photodiode is operated by placing an initial fat zero charge thereon before the integration of a light-induced signal, the actual dark level signal created by the fat zero charge is sampled with each readout from the photodiode, and then retransferred to the photodiode. After integration, the sampled dark level is subtracted from the total signal level on the photodiode. In this way both fixed-pattern and thermally-induced noise is obviated.
摘要翻译：在光敏器件中，通过在光诱导信号的积分之前在其上放置初始脂肪零电荷来操作光电二极管，通过从光电二极管的每次读出对由零零电荷产生的实际暗电平信号进行采样，然后再传输到光电二极管。积分后，从光电二极管上的总信号电平中减去采样暗电平。以这种方式，消除了固定模式和热感应噪声。

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