JPS5717263A - Reader for four color original - Google Patents

Reader for four color original

Info

Publication number
JPS5717263A
JPS5717263A JP9243880A JP9243880A JPS5717263A JP S5717263 A JPS5717263 A JP S5717263A JP 9243880 A JP9243880 A JP 9243880A JP 9243880 A JP9243880 A JP 9243880A JP S5717263 A JPS5717263 A JP S5717263A
Authority
JP
Japan
Prior art keywords
signal
colors
red
blue
original
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.)
Granted
Application number
JP9243880A
Other languages
Japanese (ja)
Other versions
JPS6128260B2 (en
Inventor
Hiroshi Mitsuda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9243880A priority Critical patent/JPS5717263A/en
Publication of JPS5717263A publication Critical patent/JPS5717263A/en
Publication of JPS6128260B2 publication Critical patent/JPS6128260B2/ja
Granted 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
    • H04N1/46—Colour picture communication systems
    • H04N1/48—Picture signal generators
    • H04N1/482—Picture signal generators using the same detector device sequentially for different colour components
    • H04N1/484—Picture signal generators using the same detector device sequentially for different colour components with sequential colour illumination of the original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To enable the read-in of the white and black colors plus the said two colors, by radiating the original alternately with two colored light source different from the distribution of spectral radiation, making photo electric conversion through the reception of reflected light and processing obtained output signal for operation. CONSTITUTION:An original 1 is intermittently carried in synchronizingly with the main scanning of a solidstate image sensor 5, and it is radiated alternately with red and blue fluorescent lights 6, 7 during the halt period. Red signal Vr and blue signal Vb obtained from the solidstate image sensor 5 are inputted to input terminals Vr, Vb of the operation circuit, operation is made through a delay circuit 8, subtraction circuit 9, binary circuits 10, 11, 12 and gate 13 and the color is separated at the threshold value to obtain red, blue and black signals VR, VB, and VBK. The part not obtained for the three types of signals becomes white signal VW. Thus, two types of light sources can read in four colors sharply with a simple device.
JP9243880A 1980-07-04 1980-07-04 Reader for four color original Granted JPS5717263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9243880A JPS5717263A (en) 1980-07-04 1980-07-04 Reader for four color original

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9243880A JPS5717263A (en) 1980-07-04 1980-07-04 Reader for four color original

Publications (2)

Publication Number Publication Date
JPS5717263A true JPS5717263A (en) 1982-01-28
JPS6128260B2 JPS6128260B2 (en) 1986-06-30

Family

ID=14054427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9243880A Granted JPS5717263A (en) 1980-07-04 1980-07-04 Reader for four color original

Country Status (1)

Country Link
JP (1) JPS5717263A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507037A1 (en) * 1981-06-01 1982-12-03 Canon Kk COLOR IMAGE READING APPARATUS
JPS5864864A (en) * 1981-10-13 1983-04-18 Canon Inc Color picture reader
EP0158332A2 (en) * 1984-04-09 1985-10-16 Sharp Kabushiki Kaisha Image reading apparatus
US4652913A (en) * 1983-04-11 1987-03-24 Fuji Xerox Co., Ltd. Method and apparatus for reading color images using a plurality of color light sources in which one of the light sources is turned on continuously
US4658289A (en) * 1984-01-12 1987-04-14 Sharp Kabushiki Kaisha Color-picture analyzing apparatus for continuously switching-on green lamp and for alternatively switching-on blue and red-purpose lamps
US4670779A (en) * 1984-01-10 1987-06-02 Sharp Kabushiki Kaisha Color-picture analyzing apparatus with red-purpose and green-purpose filters
US4970585A (en) * 1983-06-21 1990-11-13 Fuji Xerox Co., Ltd. Method and apparatus for reading multicolor manuscripts
WO2004084140A1 (en) * 2003-03-18 2004-09-30 Fujitsu Limited Image pickup apparatus
JP2007323667A (en) * 2007-07-30 2007-12-13 Fujitsu Ltd Imaging apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507037A1 (en) * 1981-06-01 1982-12-03 Canon Kk COLOR IMAGE READING APPARATUS
JPS5864864A (en) * 1981-10-13 1983-04-18 Canon Inc Color picture reader
JPH0342539B2 (en) * 1981-10-13 1991-06-27
US4652913A (en) * 1983-04-11 1987-03-24 Fuji Xerox Co., Ltd. Method and apparatus for reading color images using a plurality of color light sources in which one of the light sources is turned on continuously
US4970585A (en) * 1983-06-21 1990-11-13 Fuji Xerox Co., Ltd. Method and apparatus for reading multicolor manuscripts
US4670779A (en) * 1984-01-10 1987-06-02 Sharp Kabushiki Kaisha Color-picture analyzing apparatus with red-purpose and green-purpose filters
US4658289A (en) * 1984-01-12 1987-04-14 Sharp Kabushiki Kaisha Color-picture analyzing apparatus for continuously switching-on green lamp and for alternatively switching-on blue and red-purpose lamps
EP0158332A2 (en) * 1984-04-09 1985-10-16 Sharp Kabushiki Kaisha Image reading apparatus
WO2004084140A1 (en) * 2003-03-18 2004-09-30 Fujitsu Limited Image pickup apparatus
US7327854B2 (en) 2003-03-18 2008-02-05 Fujitsu Limited Capture device
JP2007323667A (en) * 2007-07-30 2007-12-13 Fujitsu Ltd Imaging apparatus
JP4485549B2 (en) * 2007-07-30 2010-06-23 富士通株式会社 Imaging device

Also Published As

Publication number Publication date
JPS6128260B2 (en) 1986-06-30

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