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    1.
    发明专利
    未知

    公开(公告)号：DE69629888D1

    公开(公告)日：2003-10-16

    申请号：DE69629888

    申请日：1996-10-28

    Applicant: XEROX CORP

    Inventor： JACKSON WARREN B ,  JARED DAVID A ,  BASU SUMIT ,  BIEGELSEN DAVID K

    IPC: H04N1/40 ,  G06T7/60 ,  H04N1/409

    Abstract: An image detection and pixel processing system includes a plurality of position sensitive detector elements arranged to receive an image. Each position sensitive detector element provides information for determining both a total light intensity value within the position sensitive detector element and a centroid of light intensity indicative of light intensity position within the position sensitive detector element. An image processing assembly receives information from the plurality of position detector elements with the image processing assembly relating a pixel and its encompassed subpixel area to each corresponding position detector element. The total light intensity within the pixel and the centroid of light intensity within the subpixel is determined, with the image processing assembly rendering each subpixel area as an edge when magnitude of the centroid of light intensity is large.

    3.
    发明专利
    未知

    公开(公告)号：DE69629888T2

    公开(公告)日：2004-05-13

    申请号：DE69629888

    申请日：1996-10-28

    Applicant: XEROX CORP

    Inventor： JACKSON WARREN B ,  JARED DAVID A ,  BASU SUMIT ,  BIEGELSEN DAVID K

    IPC: H04N1/40 ,  G06T7/60 ,  H04N1/409

    Abstract: An image detection and pixel processing system includes a plurality of position sensitive detector elements arranged to receive an image. Each position sensitive detector element provides information for determining both a total light intensity value within the position sensitive detector element and a centroid of light intensity indicative of light intensity position within the position sensitive detector element. An image processing assembly receives information from the plurality of position detector elements with the image processing assembly relating a pixel and its encompassed subpixel area to each corresponding position detector element. The total light intensity within the pixel and the centroid of light intensity within the subpixel is determined, with the image processing assembly rendering each subpixel area as an edge when magnitude of the centroid of light intensity is large.

    5.
    发明专利
    未知

    公开(公告)号：DE69608710D1

    公开(公告)日：2000-07-13

    申请号：DE69608710

    申请日：1996-01-03

    Applicant: XEROX CORP

    Inventor： JACKSON WARREN B ,  BIEGELSEN DAVID K ,  JARED DAVID A ,  WEISFIELD RICHARD L

    IPC: G02F1/133 ,  G02F1/1343 ,  G09F9/30

    Abstract: Pixel elements capable of imaging spatial intensity variations within themselves, and displays comprised of such elements, are described. The pixel elements (10) include a resistance layer (14) disposed between at least one set of electrodes (16,22). Over that resistance layer (14) is a liquid crystal material (24). Over that liquid crystal material (24) is a field electrode (26). In operation a voltage, whose components are referenced to the field electrode, is applied across the resistance layer (14). The resulting current flow induces a spatially varying electric field between the field electrode (26) and the resistance layer (14). That spatially varying electric field results in a corresponding response by the liquid crystal layer which results in a spatially varying light transmission through the liquid crystal material. By varying the voltage across the resistance layer (14) and/or the voltage applied to the field electrode (26) varying amounts of light transmission can be achieved.

    6.
    发明专利
    未知

    公开(公告)号：DE69940454D1

    公开(公告)日：2009-04-09

    申请号：DE69940454

    申请日：1999-08-27

    Applicant: XEROX CORP

    Inventor： HECHT DAVID L ,  JARED DAVID A ,  FLORES L NOAH ,  STEARNES RICHARD G ,  CHANG KENNETH H P

    IPC: G06F3/041 ,  G06K19/06 ,  G06K1/12 ,  G06K7/00 ,  G06K7/14

    Abstract: A user interface is implemented using visual indicia and a background for the visual indicia that encodes address information. The background appears visually as a stipple pattern, but is implemented using glyphs which form and address carpet that encodes address information uniquely identifying each area of the user interface. An image capture device is used to select an area of the address carpet that is under or near visual indicia of interest to the user. The image capture device captures the area of interest, and transmits the image area to a computer for processing. The computer first determines the proper orientation of the image, and then decodes the information encoded by the glyphs. The decoding results in an X, Y address identifying the location of the selected area in the address carpet. Based on the address, the computer may perform an operation associated with the area.

    9.
    发明专利
    未知

    公开(公告)号：DE69608710T2

    公开(公告)日：2000-10-05

    申请号：DE69608710

    申请日：1996-01-03

    Applicant: XEROX CORP

    Inventor： JACKSON WARREN B ,  BIEGELSEN DAVID K ,  JARED DAVID A ,  WEISFIELD RICHARD L

    IPC: G02F1/133 ,  G02F1/1343 ,  G09F9/30

    Abstract: Pixel elements capable of imaging spatial intensity variations within themselves, and displays comprised of such elements, are described. The pixel elements (10) include a resistance layer (14) disposed between at least one set of electrodes (16,22). Over that resistance layer (14) is a liquid crystal material (24). Over that liquid crystal material (24) is a field electrode (26). In operation a voltage, whose components are referenced to the field electrode, is applied across the resistance layer (14). The resulting current flow induces a spatially varying electric field between the field electrode (26) and the resistance layer (14). That spatially varying electric field results in a corresponding response by the liquid crystal layer which results in a spatially varying light transmission through the liquid crystal material. By varying the voltage across the resistance layer (14) and/or the voltage applied to the field electrode (26) varying amounts of light transmission can be achieved.

    GLYPH ADDRESS CARPET METHOD AND DEVICE FOR PROVIDING POSITION INFORMATION OF MULTIDIMENSIONAL ADDRESS SPACE
    10.
    发明专利
    GLYPH ADDRESS CARPET METHOD AND DEVICE FOR PROVIDING POSITION INFORMATION OF MULTIDIMENSIONAL ADDRESS SPACE 失效

    公开(公告)号：JP2000099257A

    公开(公告)日：2000-04-07

    申请号：JP24653399

    申请日：1999-08-31

    Applicant: XEROX CORP

    Inventor： HECHT DAVID L ,  JARED DAVID A ,  FLORES L NOAH ,  STEARNS RICHARD G ,  CHANG KENNETH H P

    IPC: G06F3/041 ,  G06K1/12 ,  G06K7/00 ,  G06K7/14 ,  G06K19/06 ,  G06F3/03

    Abstract: PROBLEM TO BE SOLVED: To efficiently identify the original spatial position of each glyph by reading a sensitive indication embedded in a medium and the part of two-dimensional data address code and translating them to individual pointers. SOLUTION: A user arranges a camera pen 1710 on a visual mark or near that mark on a glyph address carpet 1732 as a graphical interface and performs selection by pressing a button 1715. By pressing the button 1715, the camera pen 1710 captures the part of the address carpet 1732 under that top end and transmits an image through a frame capture 1728 to a computer 1712 for analysis. At the computer 1712, a processor 1722 executes a program, analyzes the captured part of the glyph address carpet 1732, determines the direction of the image in order to decode and interpret address information encoded into glyph and decodes the address at the position selected on the address carpet.

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