JPS56152370A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS56152370A
JPS56152370A JP5607980A JP5607980A JPS56152370A JP S56152370 A JPS56152370 A JP S56152370A JP 5607980 A JP5607980 A JP 5607980A JP 5607980 A JP5607980 A JP 5607980A JP S56152370 A JPS56152370 A JP S56152370A
Authority
JP
Japan
Prior art keywords
black
signals
signal
black signal
read
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
JP5607980A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0153537B2 (enrdf_load_stackoverflow
Inventor
Motoharu Fujii
Noboru Yukimura
Koji Sato
Naoki Ayada
Seiji Saito
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.)
Canon Inc
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 JP5607980A priority Critical patent/JPS56152370A/ja
Publication of JPS56152370A publication Critical patent/JPS56152370A/ja
Publication of JPH0153537B2 publication Critical patent/JPH0153537B2/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
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6016—Conversion to subtractive colour signals
    • H04N1/6022—Generating a fourth subtractive colour signal, e.g. under colour removal, black masking

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Color Image Communication Systems (AREA)
JP5607980A 1980-04-26 1980-04-26 Picture reader Granted JPS56152370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5607980A JPS56152370A (en) 1980-04-26 1980-04-26 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5607980A JPS56152370A (en) 1980-04-26 1980-04-26 Picture reader

Publications (2)

Publication Number Publication Date
JPS56152370A true JPS56152370A (en) 1981-11-25
JPH0153537B2 JPH0153537B2 (enrdf_load_stackoverflow) 1989-11-14

Family

ID=13017071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5607980A Granted JPS56152370A (en) 1980-04-26 1980-04-26 Picture reader

Country Status (1)

Country Link
JP (1) JPS56152370A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336588A1 (de) * 1982-10-08 1984-04-12 Canon K.K., Tokyo Farbbild-verarbeitungseinrichtung
JPS59134978A (ja) * 1983-01-24 1984-08-02 Nec Corp カラ−画像入力装置
JPS59170864A (ja) * 1983-03-17 1984-09-27 Canon Inc 画像処理装置
US5555107A (en) * 1989-07-25 1996-09-10 Canon Kabushiki Kaisha Image processing apparatus for judging a color using spatial frequency corrected color component signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54117617A (en) * 1978-03-03 1979-09-12 Mitsubishi Electric Corp Two-color original reader

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54117617A (en) * 1978-03-03 1979-09-12 Mitsubishi Electric Corp Two-color original reader

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336588A1 (de) * 1982-10-08 1984-04-12 Canon K.K., Tokyo Farbbild-verarbeitungseinrichtung
US4642681A (en) * 1982-10-08 1987-02-10 Canon Kabushiki Kaisha Color image processing apparatus for generating color output signals and a black output signal in a mutually exclusive manner
DE3336588C3 (de) * 1982-10-08 1995-04-20 Canon Kk Farbbild-Verarbeitungseinrichtung
JPS59134978A (ja) * 1983-01-24 1984-08-02 Nec Corp カラ−画像入力装置
JPS59170864A (ja) * 1983-03-17 1984-09-27 Canon Inc 画像処理装置
US5555107A (en) * 1989-07-25 1996-09-10 Canon Kabushiki Kaisha Image processing apparatus for judging a color using spatial frequency corrected color component signals

Also Published As

Publication number Publication date
JPH0153537B2 (enrdf_load_stackoverflow) 1989-11-14

Similar Documents

Publication Publication Date Title
CA2018640A1 (en) Recognition of image colors using arbitrary shapes in color space
EP0307203A3 (en) Tri-color separating optical system
US4577218A (en) Color separating circuit for producing red and black signals
GB2005511A (en) Colour television camera signal processing apparatus
JPS57109488A (en) Solid color image pickup device
JPS56109087A (en) Digital color encoder
JPS54117617A (en) Two-color original reader
JPS56152370A (en) Picture reader
JPS57203389A (en) Solid-state color image pickup device
EP0428884A1 (en) Colour filter arrangement for a solid-state imaging apparatus
EP0300667A3 (en) Slide scanner
US4403247A (en) Solid state color imaging apparatus
JPS5744825A (en) Device for sensing color image
JPS55147890A (en) Image pickup device
JPS6128260B2 (enrdf_load_stackoverflow)
SU1046971A1 (ru) Устройство дл формировани цветовых видеосигналов
JPS5644282A (en) Color solid image pickup device
JPS55131873A (en) Read system for document
JPS5514729A (en) Color facsimile transmitter
JPS5630381A (en) Image pickup unit
JPS55165084A (en) Color separation filter for solid-state pickup color camera
JPS5760790A (en) Color image pickup device
JPS64914A (en) Three colored resolution image reader
JPS57131168A (en) Color original reading method
JPS562073A (en) Optical reader