JPS57180268A - Picture magnifying and contracting device - Google Patents

Picture magnifying and contracting device

Info

Publication number
JPS57180268A
JPS57180268A JP6468181A JP6468181A JPS57180268A JP S57180268 A JPS57180268 A JP S57180268A JP 6468181 A JP6468181 A JP 6468181A JP 6468181 A JP6468181 A JP 6468181A JP S57180268 A JPS57180268 A JP S57180268A
Authority
JP
Japan
Prior art keywords
data
memory
scanner
magnification
period
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
JP6468181A
Other languages
Japanese (ja)
Inventor
Kenichi Onishi
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP6468181A priority Critical patent/JPS57180268A/en
Publication of JPS57180268A publication Critical patent/JPS57180268A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with modification of image resolution, i.e. determining the values of picture elements at new relative positions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE:To change the factor of magnification and contraction continuously, by varying the frequency of the basic clock relating to the write period for longitudinal and lateral direction of a memory storing a scanning data. CONSTITUTION:In a primary dimension scanner 1, a plurality of CCD elements are connected in series, and a scanning data A transmitted from the scanner 1 is transferred to a memory 2. When the scanner 1 moves on an original picture in a constant speed, the data A is sequentially outputted with a prescribed period and the data A is stored in the memory 2 with a prescribed period at a write control circuit 5. In this case, row and column addresses of the memory 2 are determined with the output of row and column address generating circuits 3 and 4 respectively. The frequency of the basic clock relating to the longitudinal and lateral write period of a memory storing the data A is changed, allowing to continuously change the magnification and contraction factors.
JP6468181A 1981-04-28 1981-04-28 Picture magnifying and contracting device Pending JPS57180268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6468181A JPS57180268A (en) 1981-04-28 1981-04-28 Picture magnifying and contracting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6468181A JPS57180268A (en) 1981-04-28 1981-04-28 Picture magnifying and contracting device

Publications (1)

Publication Number Publication Date
JPS57180268A true JPS57180268A (en) 1982-11-06

Family

ID=13265142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6468181A Pending JPS57180268A (en) 1981-04-28 1981-04-28 Picture magnifying and contracting device

Country Status (1)

Country Link
JP (1) JPS57180268A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02114761A (en) * 1988-10-25 1990-04-26 Nec Corp Original read circuit
EP0767577A2 (en) * 1995-10-05 1997-04-09 Sharp Kabushiki Kaisha Image processing apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54139326A (en) * 1978-04-20 1979-10-29 Matsushita Graphic Communic Video signal processor
JPS55157787A (en) * 1979-05-29 1980-12-08 Mitsubishi Electric Corp Image display unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54139326A (en) * 1978-04-20 1979-10-29 Matsushita Graphic Communic Video signal processor
JPS55157787A (en) * 1979-05-29 1980-12-08 Mitsubishi Electric Corp Image display unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02114761A (en) * 1988-10-25 1990-04-26 Nec Corp Original read circuit
EP0767577A2 (en) * 1995-10-05 1997-04-09 Sharp Kabushiki Kaisha Image processing apparatus
EP0767577A3 (en) * 1995-10-05 1997-12-29 Sharp Kabushiki Kaisha Image processing apparatus

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