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Hagemeyer Friedrich Dr Ing, Grethen Hartmut Dr Ing, Hamann Peter Dipl Ing, Meye Wolfgang Dr Ing: Scanning device for illuminating and optically scanning a plane copy.. Siemens, April 9, 1986: EP0177436-A1 (50 worldwide citation)

Eine Abtasteinrichtung weist mikrozeilenindividuelle Beleuchtungselemente (B1 ... Bn) innerhalb einer Folie (F) auf, die in einer zur Ebene der Beleuchtungselemente (B1 ... Bn) parallelen Ebene senkrecht zu den Mikrozeilen ausgerichtete Lichtempfangselemente (L1 ... Lm) aufnimmt; die Lichtempfangsel ...


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Blumenthal John: Electrographic imaging system and heads therefor. Clevite Corporation, October 5, 1971: US3611419 (31 worldwide citation)

An electrographic imaging system is provided for producing an electrostatic latent image upon an electrographic record medium having dielectric and conductive layers. Electrostatic charging means are provided comprising an array of charging electrode means, some of which are interconnected and there ...


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Smyth William K: Color balanced image detector system.. Polaroid, September 26, 1990: EP0388658-A1 (26 worldwide citation)

An imaging system for producing multicolor images of a scanned subject includes a plurality of detector assemblies. Each of the detector assemblies is sensitive to a specific color. Typically, red, green, and blue detector assemblies are employed for converting images in the primary colors to the de ...


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Wichmann Guenter, Buechtemann Wolf Dr Dipl Phys: Method and device for offset and response harmonization in an electrooptical linear or mosaic sensor.. Eltro, May 6, 1992: EP0483530-A2 (18 worldwide citation)

Method for harmonising offset voltages and different responsivities in an electrooptical linear or mosaic detector; in addition, the aim is to remove or reduce the aliasing phenomenon. For this purpose, at least two detectors (1; 2) are exposed in each case to radiation derived from the scene and as ...


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Allen Ross R: Digital cameras. Hewlett Packard Co, January 26, 2000: EP0974811-A1 (16 worldwide citation)

A method for a digital camera capturing technique includes determining an orientation of an object (e.g., a document) relative to an optical axis of the digital camera, and determining a distance of the object from the digital camera. The method also includes determining a planarity of the object (e ...


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Dance Christopher R, Seeger Mauritius: Method and apparatus for indicating a field of view for a document camera. Xerox, May 15, 2002: EP1205790-A2 (15 worldwide citation)

A document camera is described for capturing an electronic image of a document, for subsequent optical character recognition. In order to avoid the need for a user to look through a viewfinder of the camera, the camera comprises a projector for projecting an optical field of view indicator on to the ...


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Sprague Robert A: Device for scanning coloured originals.. Xerox, January 13, 1982: EP0043721-A2 (14 worldwide citation)

A document 14 to be read is illuminated by light source 10 @d imaged by optics 16 onto a single 19 integrated detector @ay made up of several photosensitive linear arrays 20, 22, @ 26. Each linear detector is read out to provide a line scan of @ document. The document is then translated across the @ ...


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Slatter David Neil, Roe Malcolm David Mckinnon: Camera with keystone distortion correction. Hewlett Packard Co, March 8, 2000: EP0984319-A1 (13 worldwide citation)

The present invention relates to the correction of planar focus in an electronic still or video camera (20). The camera comprises: a detector array (34); an objective lens (21) arranged to direct optical radiation from an object plane (26) onto the detector (34), the lens (21) defining an optical ax ...


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