JPS5658370A - Read-in method for color picture - Google Patents

Read-in method for color picture

Info

Publication number
JPS5658370A
JPS5658370A JP13445079A JP13445079A JPS5658370A JP S5658370 A JPS5658370 A JP S5658370A JP 13445079 A JP13445079 A JP 13445079A JP 13445079 A JP13445079 A JP 13445079A JP S5658370 A JPS5658370 A JP S5658370A
Authority
JP
Japan
Prior art keywords
storage time
read
gate
outputs
circuit
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
JP13445079A
Other languages
Japanese (ja)
Inventor
Toshitaka Hirata
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13445079A priority Critical patent/JPS5658370A/en
Publication of JPS5658370A publication Critical patent/JPS5658370A/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
    • H04N1/46—Colour picture communication systems
    • H04N1/48—Picture signal generators
    • H04N1/482—Picture signal generators using the same detector device sequentially for different colour components

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Color Image Communication Systems (AREA)

Abstract

PURPOSE:To eliminate the level difference among color read-in signals, by adjusting the picture projection storage time of a solidstate image sensor for every color filter and further adjusting the read-in signal level for every color filter. CONSTITUTION:A clock control circuit 10b adjusts the storage time for a CCD element 6. Further, one set of operational amplifier 8 only is inserted between a preamplifier 7 and a binary circuit 9. The output of the circuit 9 is transmitted on three parallel lines depending on chroma signal at AND gates AN1-AN3, and each of the gates AN1-AN3 is ON-controlled with the respective output of AN7-AN9. The gate AN1 outputs only the readout binary signal immediately after the storage time of tR, the gate AN2 outputs that immediately after the storage time in tG, and the gate AN3 outputs that in tB.
JP13445079A 1979-10-18 1979-10-18 Read-in method for color picture Pending JPS5658370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13445079A JPS5658370A (en) 1979-10-18 1979-10-18 Read-in method for color picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13445079A JPS5658370A (en) 1979-10-18 1979-10-18 Read-in method for color picture

Publications (1)

Publication Number Publication Date
JPS5658370A true JPS5658370A (en) 1981-05-21

Family

ID=15128623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13445079A Pending JPS5658370A (en) 1979-10-18 1979-10-18 Read-in method for color picture

Country Status (1)

Country Link
JP (1) JPS5658370A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972870A (en) * 1982-10-20 1984-04-24 Canon Inc Information reader
JPS59110266A (en) * 1982-12-15 1984-06-26 Ikegami Tsushinki Co Ltd Color original image pickup device
JPS60125528A (en) * 1983-12-09 1985-07-04 Canon Inc Reader
FR2577669A1 (en) * 1985-02-21 1986-08-22 Fuji Photo Film Co Ltd IMAGE READING METHOD AND APPARATUS
JPS61277269A (en) * 1985-05-31 1986-12-08 Matsushita Electric Ind Co Ltd Color picture reader
US4633301A (en) * 1982-07-30 1986-12-30 Fuji Xerox Co., Ltd. Method and apparatus with white balancing correction for separating a color signal and its complement
US4647961A (en) * 1984-07-23 1987-03-03 Ricoh Company Ltd. Apparatus for reading the image information of a colored original
DE3636658A1 (en) * 1985-10-29 1987-04-30 Canon Kk DEVICE FOR PROCESSING COLOR IMAGE INFORMATION
US4667227A (en) * 1984-04-23 1987-05-19 Canon Kabushiki Kaisha Color image reading apparatus
US4731661A (en) * 1984-11-16 1988-03-15 Sharp Kabushiki Kaisha Color document reader with white balance adjuster for determining light emission periods for a plurality of different-colored light sources and corresponding integration times for a light sensor by reading a white reference area
US4809062A (en) * 1984-11-14 1989-02-28 Microtek Lab., Inc. Optical color line scanning and imaging device having a roller drive
US4833533A (en) * 1985-05-03 1989-05-23 Ing. C. Olivetti & C., S.P.A. Color image reacting apparatus having a non-uniformity correction ROM with sections corresponding to red, green, and blue color separation filters
JPH01248870A (en) * 1988-03-30 1989-10-04 Canon Inc Color input device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633301A (en) * 1982-07-30 1986-12-30 Fuji Xerox Co., Ltd. Method and apparatus with white balancing correction for separating a color signal and its complement
US4734762A (en) * 1982-10-20 1988-03-29 Canon Kabushiki Kaisha Color image reading apparatus with a plurality of line sensors in which a white balance operation is performed by determining amplifier gains while reading a white reference plate
JPS5972870A (en) * 1982-10-20 1984-04-24 Canon Inc Information reader
JPS59110266A (en) * 1982-12-15 1984-06-26 Ikegami Tsushinki Co Ltd Color original image pickup device
JPS60125528A (en) * 1983-12-09 1985-07-04 Canon Inc Reader
US4667227A (en) * 1984-04-23 1987-05-19 Canon Kabushiki Kaisha Color image reading apparatus
US4647961A (en) * 1984-07-23 1987-03-03 Ricoh Company Ltd. Apparatus for reading the image information of a colored original
US4809062A (en) * 1984-11-14 1989-02-28 Microtek Lab., Inc. Optical color line scanning and imaging device having a roller drive
US4731661A (en) * 1984-11-16 1988-03-15 Sharp Kabushiki Kaisha Color document reader with white balance adjuster for determining light emission periods for a plurality of different-colored light sources and corresponding integration times for a light sensor by reading a white reference area
US4809061A (en) * 1985-02-21 1989-02-28 Fuji Photo Film Co., Ltd. Image readout method and apparatus
FR2577669A1 (en) * 1985-02-21 1986-08-22 Fuji Photo Film Co Ltd IMAGE READING METHOD AND APPARATUS
US4833533A (en) * 1985-05-03 1989-05-23 Ing. C. Olivetti & C., S.P.A. Color image reacting apparatus having a non-uniformity correction ROM with sections corresponding to red, green, and blue color separation filters
JPS61277269A (en) * 1985-05-31 1986-12-08 Matsushita Electric Ind Co Ltd Color picture reader
DE3636658A1 (en) * 1985-10-29 1987-04-30 Canon Kk DEVICE FOR PROCESSING COLOR IMAGE INFORMATION
JPH01248870A (en) * 1988-03-30 1989-10-04 Canon Inc Color input device

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