JPS6468059A - Electronic copying device - Google Patents

Electronic copying device

Info

Publication number
JPS6468059A
JPS6468059A JP62224635A JP22463587A JPS6468059A JP S6468059 A JPS6468059 A JP S6468059A JP 62224635 A JP62224635 A JP 62224635A JP 22463587 A JP22463587 A JP 22463587A JP S6468059 A JPS6468059 A JP S6468059A
Authority
JP
Japan
Prior art keywords
image
distortion
correction signal
circuit
frame memory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62224635A
Other languages
Japanese (ja)
Inventor
Shigeaki Ushiro
Akita Namioka
Hiroshi Omura
Michio Cho
Masaaki Nakada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP62224635A priority Critical patent/JPS6468059A/en
Publication of JPS6468059A publication Critical patent/JPS6468059A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To normally copy an image on an image recording surface without distortion by providing a correction means to electrically correct the magnification distortion in up-and-down direction of an image focused to an image reading means. CONSTITUTION:In case there is a difference in height between an image on the blackboard and the center of a mirror, an image formed by a lens on a surface to be scanned by a line sensor 40 is effected by so-called keystone effect, the image is formed into a trapezoidal shape with its upper part narrowed, therefore, the image which originally is square-shaped is read as a trapezoidal image, and stored in a first frame memory 63. To an arithmetic circuit 64 connected to the memory 63, the correcting circuit 46 to transmit a correction signal to correct keystone effect based on a voltage signal from a potentiometer 45 is connected. The circuit 64, based on said correction signal, operates the image data in order to return the image to its original square shape, i.e. an operation to widen the narrowed part in accordance the correction signal is executed, and the result is transmitted to a second frame memory 65. As a result, a normal image without any distortion can be copied.
JP62224635A 1987-09-08 1987-09-08 Electronic copying device Pending JPS6468059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62224635A JPS6468059A (en) 1987-09-08 1987-09-08 Electronic copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62224635A JPS6468059A (en) 1987-09-08 1987-09-08 Electronic copying device

Publications (1)

Publication Number Publication Date
JPS6468059A true JPS6468059A (en) 1989-03-14

Family

ID=16816799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62224635A Pending JPS6468059A (en) 1987-09-08 1987-09-08 Electronic copying device

Country Status (1)

Country Link
JP (1) JPS6468059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH036674A (en) * 1989-06-02 1991-01-14 Nagoya Denki Kogyo Kk Picture distortion correcting device
US7289113B2 (en) 1991-10-21 2007-10-30 Smart Technologies Inc. Projection display system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH036674A (en) * 1989-06-02 1991-01-14 Nagoya Denki Kogyo Kk Picture distortion correcting device
US7289113B2 (en) 1991-10-21 2007-10-30 Smart Technologies Inc. Projection display system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks
US7626577B2 (en) 1991-10-21 2009-12-01 Smart Technologies Ulc Projection display system with pressure sensing at a screen, a calibration system corrects for non-orthogonal projection errors

Similar Documents

Publication Publication Date Title
EP0109237A3 (en) Improvements in and relating to document scanners
JPS5983462A (en) Reading, printing and copying machine
JPS61227481A (en) Method of fetching correction reference data in picture input device
JPH07231384A (en) Digital recorder
AU8942182A (en) Contrast accentuation
ATE27881T1 (en) DOCUMENT SCANNER.
JPS6468059A (en) Electronic copying device
US4833540A (en) Image processing apparatus
JPS6468061A (en) Electronic copying device
JPS6146671A (en) Area designation system
JPS62277852A (en) Picture signal processor
JPS6263382A (en) Picture reading device
JPS6318763A (en) Image reading device for digital scanner
JPS6461877A (en) Picture processor
JPS55164844A (en) Copying apparatus having black-color pressure plate
JP2998971B2 (en) Image reading device
JPS58202661A (en) Image pickup device
JPS58102258A (en) Copying device
JPH03147479A (en) Picture reader
JPH0653468A (en) Image sensor
JPS5899885A (en) Hand scanner device
JPS5814670A (en) Image reader
JPS6348222B2 (en)
JPS6090462A (en) Automatic facsimile method of microfilm
JPS577670A (en) Compensation processing system for optical disk error