JPH01248870A - Color input device - Google Patents

Color input device

Info

Publication number
JPH01248870A
JPH01248870A JP63074809A JP7480988A JPH01248870A JP H01248870 A JPH01248870 A JP H01248870A JP 63074809 A JP63074809 A JP 63074809A JP 7480988 A JP7480988 A JP 7480988A JP H01248870 A JPH01248870 A JP H01248870A
Authority
JP
Japan
Prior art keywords
color
reading
image
circuit
accumulating time
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
JP63074809A
Other languages
Japanese (ja)
Other versions
JP2808114B2 (en
Inventor
Hiroshi Kyogoku
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP63074809A priority Critical patent/JP2808114B2/en
Publication of JPH01248870A publication Critical patent/JPH01248870A/en
Application granted granted Critical
Publication of JP2808114B2 publication Critical patent/JP2808114B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To read a color image without speed decrease by providing a reading means to read the image with changing an accumulating time according to a reflected light color, and successively outputting and processing the image at the accumulating time at an integer ratio or the ratio approximate to it from the color at higher comparative output sensitivity.
CONSTITUTION: A reading means E is linked to respective R, G and B image sensors (a), and reads the image in a reading cycle for the same part of a color original with the help of the reflecting light color by changing the accumulating time. Following processing stages are constituted in the sequence of a switching circuit part (e), an amplifying circuit part b1, a color processing circuit part c1, a memory circuit part d1, and an I/F circuit part (f) in the same way for the R, G and B. The reading is executed in a reading cycle t1 for the same part in a reading cycle T, in which the R, G and B colors are read, at every line, in the sequence of R, G and B which is the sequence arranged from the higher comparative output sensitivity, with the accumulating time of integer ratio or the ratio approximate to it of 1:2:3.
COPYRIGHT: (C)1989,JPO&Japio
JP63074809A 1988-03-30 1988-03-30 Color input device Expired - Lifetime JP2808114B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63074809A JP2808114B2 (en) 1988-03-30 1988-03-30 Color input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63074809A JP2808114B2 (en) 1988-03-30 1988-03-30 Color input device

Publications (2)

Publication Number Publication Date
JPH01248870A true JPH01248870A (en) 1989-10-04
JP2808114B2 JP2808114B2 (en) 1998-10-08

Family

ID=13558006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63074809A Expired - Lifetime JP2808114B2 (en) 1988-03-30 1988-03-30 Color input device

Country Status (1)

Country Link
JP (1) JP2808114B2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5658370A (en) * 1979-10-18 1981-05-21 Ricoh Co Ltd Read-in method for color picture
JPS6087564A (en) * 1983-10-20 1985-05-17 Matsushita Graphic Commun Syst Inc Color original reader
JPS62171266A (en) * 1986-01-22 1987-07-28 Fujitsu Ltd Color read system
JPS63138866A (en) * 1986-12-01 1988-06-10 Nikon Corp Color film image reader
JPH01303875A (en) * 1988-03-18 1989-12-07 Ing C Olivetti & Co Spa Document scanner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5658370A (en) * 1979-10-18 1981-05-21 Ricoh Co Ltd Read-in method for color picture
JPS6087564A (en) * 1983-10-20 1985-05-17 Matsushita Graphic Commun Syst Inc Color original reader
JPS62171266A (en) * 1986-01-22 1987-07-28 Fujitsu Ltd Color read system
JPS63138866A (en) * 1986-12-01 1988-06-10 Nikon Corp Color film image reader
JPH01303875A (en) * 1988-03-18 1989-12-07 Ing C Olivetti & Co Spa Document scanner

Also Published As

Publication number Publication date
JP2808114B2 (en) 1998-10-08

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