JPS56141673A - Picture recording equipment - Google Patents

Picture recording equipment

Info

Publication number
JPS56141673A
JPS56141673A JP4490380A JP4490380A JPS56141673A JP S56141673 A JPS56141673 A JP S56141673A JP 4490380 A JP4490380 A JP 4490380A JP 4490380 A JP4490380 A JP 4490380A JP S56141673 A JPS56141673 A JP S56141673A
Authority
JP
Japan
Prior art keywords
density
converter
gamma
characteristic
linear
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
JP4490380A
Other languages
Japanese (ja)
Inventor
Hiroaki Kodera
Kunio Yoshida
Yukifumi Tsuda
Yoshimitsu Sugano
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.)
Matsushita Giken KK
Original Assignee
Matsushita Giken KK
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 Matsushita Giken KK filed Critical Matsushita Giken KK
Priority to JP4490380A priority Critical patent/JPS56141673A/en
Publication of JPS56141673A publication Critical patent/JPS56141673A/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
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Ink Jet (AREA)
  • Television Signal Processing For Recording (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)

Abstract

PURPOSE:To obtain a half-tone picture which is always stable and good in reproducibility, by providing a means which is able to freely change a gamma characteristic and also make a self-correction. CONSTITUTION:The stage 203 is provided with a recording head 204 and also a photoelectric conventer 205. The photoelectric converter 205 detects variable density of a picture on the recording medium, and sends the density information of a coordinate point correspondingly to the input data line 216 through the A/D converter 209. This data is inputted to the external computer 212 through the interface 211, and it is utilized for correcting a gamma characteristic. When correcting it, at first, the contents of the gamma conversion table memory 208 are initialized so that the gamma value becomes a linear characteristic of ''1''. Subsequently, in this state, a linear density tone data is generated by the external computer 212, it is provided to the output data line 214, and a half-tone patch is formed on the recording medium. When this density value is measured by the photoelectric converter 205 and the A/D converter 209, a density response characteristic of the equipment for a linear input can be known.
JP4490380A 1980-04-04 1980-04-04 Picture recording equipment Pending JPS56141673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4490380A JPS56141673A (en) 1980-04-04 1980-04-04 Picture recording equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4490380A JPS56141673A (en) 1980-04-04 1980-04-04 Picture recording equipment

Publications (1)

Publication Number Publication Date
JPS56141673A true JPS56141673A (en) 1981-11-05

Family

ID=12704423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4490380A Pending JPS56141673A (en) 1980-04-04 1980-04-04 Picture recording equipment

Country Status (1)

Country Link
JP (1) JPS56141673A (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157175A (en) * 1980-05-07 1981-12-04 Ricoh Co Ltd Color compensation method for color ink jet recording system
JPS58190950A (en) * 1982-04-30 1983-11-08 Fuji Photo Film Co Ltd Automatic setting system of gradation table for picture input and output device
JPS59161979A (en) * 1983-03-06 1984-09-12 Canon Inc Picture processor
JPS59163968A (en) * 1983-03-08 1984-09-17 Canon Inc Color system
JPS59163953A (en) * 1983-03-08 1984-09-17 Canon Inc Picture processing device
JPS59228468A (en) * 1983-06-09 1984-12-21 Nec Corp Picture signal level correcting device
JPS59230360A (en) * 1983-06-13 1984-12-24 Canon Inc Printer
JPS59230361A (en) * 1983-06-13 1984-12-24 Canon Inc Printer
JPS6054566A (en) * 1983-09-05 1985-03-29 Canon Inc Copying device
JPS6054567A (en) * 1983-09-05 1985-03-29 Canon Inc Recording device
JPS60216351A (en) * 1984-04-12 1985-10-29 Fuji Photo Film Co Ltd Automatic setting method of gradation processing condition
JPS60220659A (en) * 1984-04-17 1985-11-05 Fuji Photo Film Co Ltd Density adjusting method of colored picture output device
JPS61290866A (en) * 1985-06-19 1986-12-20 Matsushita Graphic Commun Syst Inc Color picture processing unit
JPS6297474A (en) * 1985-10-23 1987-05-06 Toshiba Corp Image processor
JPS62183669A (en) * 1986-02-07 1987-08-12 Canon Inc Picture processor
JPS62208787A (en) * 1986-03-08 1987-09-14 Fuji Photo Film Co Ltd Signal converting method for forming color hard copy from color video signal
JPS63246768A (en) * 1986-11-25 1988-10-13 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Exposture controller for continuous color tone electrophotographic film
JPS63317346A (en) * 1987-06-19 1988-12-26 Fuji Photo Film Co Ltd Image signal processing method
JPS63317345A (en) * 1987-06-19 1988-12-26 Fuji Photo Film Co Ltd Preparation method of lookup table
JPH02100064A (en) * 1988-10-07 1990-04-12 Ricoh Co Ltd Color copying machine
JPH04175175A (en) * 1990-11-09 1992-06-23 Mitsubishi Electric Corp Printer
JPH05318774A (en) * 1992-05-15 1993-12-03 Shimadzu Corp Ink jet printer
JPH0758957A (en) * 1994-04-05 1995-03-03 Canon Inc Color image forming device
US5699451A (en) * 1992-11-23 1997-12-16 Agfa-Gevaert Aktiengesellschaft Correction of color defects during printing of photographs
US6026216A (en) * 1995-10-20 2000-02-15 Fuji Photo Film Co., Ltd. System for generating proof
JP2008253471A (en) * 2007-04-04 2008-10-23 Ge Medical Systems Global Technology Co Llc Gamma characteristic correction table generating apparatus, gamma characteristic correction table generation method, program, and image diagnostic apparatus

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157175A (en) * 1980-05-07 1981-12-04 Ricoh Co Ltd Color compensation method for color ink jet recording system
JPS58190950A (en) * 1982-04-30 1983-11-08 Fuji Photo Film Co Ltd Automatic setting system of gradation table for picture input and output device
JPS59161979A (en) * 1983-03-06 1984-09-12 Canon Inc Picture processor
JPS59163968A (en) * 1983-03-08 1984-09-17 Canon Inc Color system
JPS59163953A (en) * 1983-03-08 1984-09-17 Canon Inc Picture processing device
JPS59228468A (en) * 1983-06-09 1984-12-21 Nec Corp Picture signal level correcting device
JPS59230360A (en) * 1983-06-13 1984-12-24 Canon Inc Printer
JPS59230361A (en) * 1983-06-13 1984-12-24 Canon Inc Printer
JPS6054566A (en) * 1983-09-05 1985-03-29 Canon Inc Copying device
JPS6054567A (en) * 1983-09-05 1985-03-29 Canon Inc Recording device
JPH0574263B2 (en) * 1983-09-05 1993-10-18 Canon Kk
JPH056826B2 (en) * 1984-04-12 1993-01-27 Fuji Photo Film Co Ltd
JPS60216351A (en) * 1984-04-12 1985-10-29 Fuji Photo Film Co Ltd Automatic setting method of gradation processing condition
JPS60220659A (en) * 1984-04-17 1985-11-05 Fuji Photo Film Co Ltd Density adjusting method of colored picture output device
JPS61290866A (en) * 1985-06-19 1986-12-20 Matsushita Graphic Commun Syst Inc Color picture processing unit
JPS6297474A (en) * 1985-10-23 1987-05-06 Toshiba Corp Image processor
JPH0795808B2 (en) * 1986-02-07 1995-10-11 キヤノン株式会社 Image processing device adjustment method
JPS62183669A (en) * 1986-02-07 1987-08-12 Canon Inc Picture processor
JPS62208787A (en) * 1986-03-08 1987-09-14 Fuji Photo Film Co Ltd Signal converting method for forming color hard copy from color video signal
JPS63246768A (en) * 1986-11-25 1988-10-13 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Exposture controller for continuous color tone electrophotographic film
JPS63317346A (en) * 1987-06-19 1988-12-26 Fuji Photo Film Co Ltd Image signal processing method
JPS63317345A (en) * 1987-06-19 1988-12-26 Fuji Photo Film Co Ltd Preparation method of lookup table
JPH02100064A (en) * 1988-10-07 1990-04-12 Ricoh Co Ltd Color copying machine
JPH04175175A (en) * 1990-11-09 1992-06-23 Mitsubishi Electric Corp Printer
JPH05318774A (en) * 1992-05-15 1993-12-03 Shimadzu Corp Ink jet printer
US5699451A (en) * 1992-11-23 1997-12-16 Agfa-Gevaert Aktiengesellschaft Correction of color defects during printing of photographs
DE4239315C2 (en) * 1992-11-23 1999-11-25 Agfa Gevaert Ag Method and device for avoiding color errors when exposing images on color copying material
JPH0758957A (en) * 1994-04-05 1995-03-03 Canon Inc Color image forming device
US6026216A (en) * 1995-10-20 2000-02-15 Fuji Photo Film Co., Ltd. System for generating proof
US6075614A (en) * 1995-10-20 2000-06-13 Fuji Photo Film Co., Ltd. System for generating proof
JP2008253471A (en) * 2007-04-04 2008-10-23 Ge Medical Systems Global Technology Co Llc Gamma characteristic correction table generating apparatus, gamma characteristic correction table generation method, program, and image diagnostic apparatus

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