KR940011191A - 칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로 - Google Patents

칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로 Download PDF

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Publication number
KR940011191A
KR940011191A KR1019920022453A KR920022453A KR940011191A KR 940011191 A KR940011191 A KR 940011191A KR 1019920022453 A KR1019920022453 A KR 1019920022453A KR 920022453 A KR920022453 A KR 920022453A KR 940011191 A KR940011191 A KR 940011191A
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South Korea
Prior art keywords
color
pixel
error
determined
scanner
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KR1019920022453A
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English (en)
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KR960005016B1 (ko
Inventor
김서규
김윤수
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정용문
삼성전자 주식회사
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Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019920022453A priority Critical patent/KR960005016B1/ko
Priority to GB9323959A priority patent/GB2273017B/en
Priority to DE4340217A priority patent/DE4340217C2/de
Priority to FR9314089A priority patent/FR2698507B1/fr
Priority to JP5296190A priority patent/JPH06225171A/ja
Priority to US08/157,270 priority patent/US5375002A/en
Priority to TW082110609A priority patent/TW247386B/zh
Publication of KR940011191A publication Critical patent/KR940011191A/ko
Application granted granted Critical
Publication of KR960005016B1 publication Critical patent/KR960005016B1/ko

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • 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
    • H04N1/52—Circuits or arrangements for halftone screening

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Image Communication Systems (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)
  • Image Processing (AREA)

Abstract

칼라 원고를 독취하기 위한 스케너(201)와, 상기 스케너(201)로부터 받은 RED, GREEN, BLUE 신호를 CYAN, MAGENTA, YELLOW 신호로 바꾸는 RGB/CMY변환기(202)를 구비한 칼라 이미지 프린터의 에러 확산회로에 있어서, 상기 CMY신호와 인접화소의 색정보에 의한 절대에러값과 인접화소의 에러값을 받아 출력할 색상을 결정하고 현재화소의 에러를 계산하고 상기 계산된 현재화소에 대한 에러값을 다음 화소의 처리시 이용하기 위해 저장해 두며, 상기 결정된 출력화소의 색상을 저장하여 다음화소의 처리시 인접화소 색정보를 제공한다.
상기 인접화소의 색에 대하여 현재 주목화소에 색이 찍히는 경우에 발생하는 절대에러를 제공하기 상기 결정된 색상을 출력하는 프린터(206)으로 구성되어 있다.

Description

칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 따른 회로도,
제3도는 본 발명에 따른 흐름도,
제4도는 본 발명에 따른 인접화소와 주목화소의 관계에서 주목화소에 색상의 처리결과를 나타낸 예시도.

Claims (2)

  1. 칼라 원고를 독취하기 위한 스케너(201)와, 상기 스케너(201)로부터 받은 R, G, B신호를 C, M, Y신호로 바꾸는 RGB/CMY변환기(202)를 구비한 칼라 이미지 프린터의 에러 확산회로에 있어서, 상기 CMY신호와 인접화소의 색정보에 의한 절대에러값과 인접화소의 에러값을 받아 출력할 색상을 결정하고 현재화소의 에러를 계산하는 에러계산 및 칼라 결정 논리부(205)와, 상기 에러계산 및 칼라 결정부(205)의 출력화소가 결정된 후 계산된 현재화소에 대한 에러값을 다음 화소의 처리시 이용하기 위해 저장해 두는 에러저장 메모리(207)와, 상기 결정된 출력화소의 색상을 저장하여 다음화소의 처리시 인접화소 색정보를 제공하기 위한 인접화소 색정보 메모리(204)와, 상기 인접화소의 색에 대하여 현재 주목화소에 색이 찍히는 경우에 발생하는 절대에러를 제공하는 에러룩업 테이블 메모리(203)와, 상기 결정된 색상을 출력하는 프린터(206)으로 구성됨을 특징으로 하는 칼라 프린터에 있어서 적응 칼라 에러 확산회로.
  2. 칼라 원고를 독취하기 위한 스케너(201)와 상기 스케너(201)로부터 받은 R, G, B신호를 C, M, Y 신호로 바꾸는 RGB/CMY변환기(202)를 구비한 칼라 이미지 프린터의 에러 확산방법에 있어서, 이미지 화상을 스케닝하여 RGB를 출력하여 CMY신호로 변환하는 제1과정과, 상기 변환된 CMY신호를 인접화소의 색정보 및 인접화소의 에러값을 이용하여 출력색상을 결정하는 제2과정과, 상기 제2과정의 결정된 색상에 따라 보상된 프린팅 데이타로 출력하고 상기 결정된 출력색상에 의해 색 보정 메모리에 저장함과 동시에 에러값은 에러룩업 테이블에서 찾아 계산하는 제3과정과, 상기 계산된 색정보 및 인접화소 에러값을 기록토록 하되 처리할 화소가 없을 때까지 진행하는 제4과정으로 이루어짐을 특징으로 하는 칼라 프린터에 있어서 적응 칼라 에러 확산방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920022453A 1992-11-26 1992-11-26 칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로 KR960005016B1 (ko)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1019920022453A KR960005016B1 (ko) 1992-11-26 1992-11-26 칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로
GB9323959A GB2273017B (en) 1992-11-26 1993-11-22 Colour error diffusion
DE4340217A DE4340217C2 (de) 1992-11-26 1993-11-25 Farbfehler-Diffusion
FR9314089A FR2698507B1 (fr) 1992-11-26 1993-11-25 Diffusion d'erreur de couleur.
JP5296190A JPH06225171A (ja) 1992-11-26 1993-11-26 適応的色誤差拡散方法及び回路
US08/157,270 US5375002A (en) 1992-11-26 1993-11-26 Color error diffusion
TW082110609A TW247386B (ko) 1992-11-26 1993-12-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920022453A KR960005016B1 (ko) 1992-11-26 1992-11-26 칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로

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Publication Number Publication Date
KR940011191A true KR940011191A (ko) 1994-06-20
KR960005016B1 KR960005016B1 (ko) 1996-04-18

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Country Status (7)

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US (1) US5375002A (ko)
JP (1) JPH06225171A (ko)
KR (1) KR960005016B1 (ko)
DE (1) DE4340217C2 (ko)
FR (1) FR2698507B1 (ko)
GB (1) GB2273017B (ko)
TW (1) TW247386B (ko)

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Also Published As

Publication number Publication date
GB2273017A (en) 1994-06-01
FR2698507B1 (fr) 1996-08-02
JPH06225171A (ja) 1994-08-12
FR2698507A1 (fr) 1994-05-27
GB2273017B (en) 1996-11-06
TW247386B (ko) 1995-05-11
GB9323959D0 (en) 1994-01-12
DE4340217A1 (de) 1994-06-30
US5375002A (en) 1994-12-20
DE4340217C2 (de) 1999-03-25
KR960005016B1 (ko) 1996-04-18

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