公开(公告)号：EP0925679A1

公开(公告)日：1999-06-30

申请号：EP98943647.0

申请日：1998-07-02

Applicant: DRS Digitale Repro-Systeme GmbH

Inventor： SCHREIER, Hans-Hermann ,  MASSELINK, Robert ,  VALENTIN, Jürgen ,  GRIGAT, Markus ,  PLÜCK, Frank ,  BRÜCK, André

IPC: G06T1 ,  H04N1

CPC classification number: H04N1/0405 ,  H04N1/0402 ,  H04N1/0432 ,  H04N1/195 ,  H04N1/19594 ,  H04N2201/0418

Abstract: The invention relates to a method and device used for the digital detection of transparent and opaque documents, comprising a CCD pick-up element (17), a document holder (5), an illuminating device (6, 19, 20) and elements for covering the edges (masking unit (10, 11, 13)) of the documents. The method comprises the following steps: a) placing the document on the document holder; b) determining the size of the document; c) automatically adjusting a zoom objective (18), assigned to the scanner, in relation to the document; d) automatically adjusting the masking (11, 13) to the document size; e) beginning the exposure process; f) automatically adjusting the illumination by determining the dynamic range of the image intensity; g) exposing the CCD chip in the camera (one shot); h) memorizing the digitized data in a PC memory; i) further processing the memorized data in the PC or in an external data processing installation.

公开(公告)号：EP0925679B1

公开(公告)日：2001-08-29

申请号：EP98943647.2

申请日：1998-07-02

Applicant: DRS Digitale Repro-Systeme GmbH

Inventor： SCHREIER, Hans-Hermann ,  MASSELINK, Robert ,  VALENTIN, Jürgen ,  GRIGAT, Markus ,  PLÜCK, Frank ,  BRÜCK, André

IPC: H04N1/38 ,  H04N1/04

CPC classification number: H04N1/0405 ,  H04N1/0402 ,  H04N1/0432 ,  H04N1/195 ,  H04N1/19594 ,  H04N2201/0418

Abstract: The invention relates to a method and device used for the digital detection of transparent and opaque documents, comprising a CCD pick-up element (17), a document holder (5), an illuminating device (6, 19, 20) and elements for covering the edges (masking unit (10, 11, 13)) of the documents. The method comprises the following steps: a) placing the document on the document holder; b) determining the size of the document; c) automatically adjusting a zoom objective (18), assigned to the scanner, in relation to the document; d) automatically adjusting the masking (11, 13) to the document size; e) beginning the exposure process; f) automatically adjusting the illumination by determining the dynamic range of the image intensity; g) exposing the CCD chip in the camera (one shot); h) memorizing the digitized data in a PC memory; i) further processing the memorized data in the PC or in an external data processing installation.