FR2437124B1 - Codeur numerique pour la transmission de fac-similes - Google Patents
Codeur numerique pour la transmission de fac-similesInfo
- Publication number
- FR2437124B1 FR2437124B1 FR7922858A FR7922858A FR2437124B1 FR 2437124 B1 FR2437124 B1 FR 2437124B1 FR 7922858 A FR7922858 A FR 7922858A FR 7922858 A FR7922858 A FR 7922858A FR 2437124 B1 FR2437124 B1 FR 2437124B1
- Authority
- FR
- France
- Prior art keywords
- similes
- fac
- transmission
- digital encoder
- encoder
- 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.)
- Expired
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
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Facsimile Transmission Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/943,734 US4266249A (en) | 1978-09-19 | 1978-09-19 | Digital encoder for facsimile transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2437124A1 FR2437124A1 (fr) | 1980-04-18 |
FR2437124B1 true FR2437124B1 (fr) | 1985-12-27 |
Family
ID=25480174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7922858A Expired FR2437124B1 (fr) | 1978-09-19 | 1979-09-13 | Codeur numerique pour la transmission de fac-similes |
Country Status (6)
Country | Link |
---|---|
US (1) | US4266249A (fr) |
DE (1) | DE2953109C2 (fr) |
FR (1) | FR2437124B1 (fr) |
GB (1) | GB2052922B (fr) |
NL (1) | NL7920086A (fr) |
WO (1) | WO1980000645A1 (fr) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389672A (en) * | 1981-02-02 | 1983-06-21 | Bell Telephone Laboratories, Incorporated | Display of pseudo-gray scale picture signals on multilevel displays |
JPS57142072A (en) * | 1981-02-27 | 1982-09-02 | Canon Inc | Video signal processor |
US4398890A (en) * | 1981-03-16 | 1983-08-16 | Knowlton Kenneth C | Representation of designs |
FR2509557B1 (fr) * | 1981-07-09 | 1986-04-11 | Agence France Presse | Procede pour la recreation d'un signal analogique de luminance a partir d'un signal numerique |
CA1189181A (fr) * | 1981-05-08 | 1985-06-18 | Stephane Guerillot | Procede et dispositif pour la recreation d'un signal analogique de luminance a partir d'un signal numerique |
US4493106A (en) * | 1981-12-24 | 1985-01-08 | International Computers Limited | Image digitizing systems |
US4580134A (en) * | 1982-11-16 | 1986-04-01 | Real Time Design, Inc. | Color video system using data compression and decompression |
JPS59178077A (ja) * | 1983-03-28 | 1984-10-09 | Dainippon Screen Mfg Co Ltd | 2値画像のデ−タ圧縮方法 |
US4546385A (en) * | 1983-06-30 | 1985-10-08 | International Business Machines Corporation | Data compression method for graphics images |
US4559563A (en) * | 1983-10-11 | 1985-12-17 | Xerox Corporation | Adaptive prediction for binary encoded documents containing a mixture of text, line drawings and halftones |
JPS60151789A (ja) * | 1984-01-19 | 1985-08-09 | Hitachi Ltd | 多機能画像処理プロセツサ |
GB2172767B (en) * | 1985-01-31 | 1989-02-08 | Canon Kk | Image signal processing system |
JPS625779A (ja) * | 1985-03-04 | 1987-01-12 | Kokusai Denshin Denwa Co Ltd <Kdd> | 階調フアクシミリ画像信号の符号化方式 |
NL8501845A (nl) * | 1985-06-27 | 1987-01-16 | Oce Nederland B V Patents And | Werkwijze voor het vergroten/verkleinen van ditherbeelden. |
US4745473A (en) * | 1986-03-24 | 1988-05-17 | Harris Corporation | Hybrid image compression system |
NL8700182A (nl) * | 1987-01-27 | 1988-08-16 | Oce Nederland Bv | Werkwijze voor het coderen van beeldinformatie. |
DE3816780A1 (de) * | 1987-05-18 | 1988-12-01 | Canon Kk | Verfahren und einrichtung zur bildverarbeitung |
US4982293A (en) * | 1988-06-02 | 1991-01-01 | Ricoh Company, Ltd. | Method of compressing halftone image data |
US4956638A (en) * | 1988-09-16 | 1990-09-11 | International Business Machines Corporation | Display using ordered dither |
US5046027A (en) * | 1988-11-08 | 1991-09-03 | Massachusetts General Hospital | Apparatus and method for processing and displaying images in a digital procesor based system |
JP3005007B2 (ja) * | 1989-12-21 | 2000-01-31 | キヤノン株式会社 | 画像符号化装置 |
US5543939A (en) * | 1989-12-28 | 1996-08-06 | Massachusetts Institute Of Technology | Video telephone systems |
US5781666A (en) * | 1990-04-17 | 1998-07-14 | Canon Kabushiki Kaisha | Image processing method and apparatus suitable for both high-resolution and low-resolution image data |
US5351138A (en) * | 1990-04-24 | 1994-09-27 | Ricoh Company, Ltd. | Image area discriminating device |
JP2543267B2 (ja) * | 1990-11-21 | 1996-10-16 | 松下電送株式会社 | 画像縮小装置と画像表示装置 |
US5455873A (en) * | 1990-12-03 | 1995-10-03 | Information International, Inc. | Facsimile dynamic thresholding apparatus and method of use thereof |
JP3072776B2 (ja) * | 1990-12-19 | 2000-08-07 | キヤノン株式会社 | 画像処理装置 |
US5270837A (en) * | 1991-09-27 | 1993-12-14 | Apple Computer, Inc. | Method and apparatus for enabling intelligent post-processing of differing data types |
US5276531A (en) * | 1991-09-27 | 1994-01-04 | Apple Computer, Inc. | Method and apparatus for high definition imaging |
US5345317A (en) * | 1991-12-19 | 1994-09-06 | Kokusai Denshin Denwa Kabushiki Kaisha | High efficiency coding method for still natural images mingled with bi-level images |
KR950000286B1 (ko) * | 1992-05-28 | 1995-01-12 | 삼성전자 주식회사 | 산술 부호화 장치 및 방법 |
US5432870A (en) * | 1993-06-30 | 1995-07-11 | Ricoh Corporation | Method and apparatus for compressing and decompressing images of documents |
JPH08336043A (ja) * | 1995-06-07 | 1996-12-17 | Oki Data:Kk | 2値画像の縮小変換装置及び拡大変換装置 |
DE19919624C2 (de) | 1999-04-29 | 2001-03-01 | Oce Printing Systems Gmbh | Verfahren, System und Computerprogramm zum Komprimieren und Übertragen von Bildrasterdaten |
US6683704B1 (en) * | 2000-05-12 | 2004-01-27 | Hewlett-Packard Development Company, L.P. | Apparatus for determining the best image from a dual resolution photo sensor |
US7277585B2 (en) * | 2001-05-25 | 2007-10-02 | Ricoh Company, Ltd. | Image encoding method, image encoding apparatus and storage medium |
JP4169522B2 (ja) * | 2002-03-22 | 2008-10-22 | 株式会社リコー | 画像処理装置、画像処理プログラム及びこのプログラムを記憶する記憶媒体 |
WO2004086750A1 (fr) * | 2003-03-27 | 2004-10-07 | Seiko Epson Corporation | Systeme de commande de production d'image, dispositif de production d'image et dispositif de traitement d'image |
US20070041054A1 (en) * | 2003-03-27 | 2007-02-22 | Toshiaki Kakutani | Image output control system, image output device, and image processing device |
JP4375398B2 (ja) * | 2004-04-22 | 2009-12-02 | セイコーエプソン株式会社 | 複数画素ずつ多値化を行う画像処理装置 |
US20080175209A1 (en) * | 2007-01-23 | 2008-07-24 | Sherif Abdel-Kader | Passively Scanning According to WLAN Regulatory Domain |
CN116779114B (zh) * | 2023-08-24 | 2023-11-03 | 邹城市人民医院 | 一种抗肿瘤医疗mri图像信息智能管理系统 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128838A (en) * | 1964-04-14 | Bathroom scale | ||
DE1116720B (de) * | 1952-11-27 | 1961-11-09 | Deutsche Bundespost | Verfahren zur gleichzeitigen Gewinnung zweier Fernsehsignale unterschiedlichen Aufloesungsvermoegens |
US2946851A (en) * | 1956-03-21 | 1960-07-26 | Bell Telephone Labor Inc | Television system having reduced transmission bandwidth |
US3377423A (en) * | 1963-02-11 | 1968-04-09 | Army Usa | Reduced bandwidth binary picture transmission |
US3294896A (en) * | 1963-07-24 | 1966-12-27 | Bell Telephone Labor Inc | Digital encoder for facsimile transmission |
US3414677A (en) * | 1964-12-28 | 1968-12-03 | Itt | Time-bandwidth reduction by dividing binary type signal into groups and producing coded signal of predetermined characteristic in response to each group |
DE1268657B (de) * | 1965-07-14 | 1968-05-22 | Hell Rudolf Dr Ing Fa | Verfahren zur Steigerung der Schaerfe bei der Aufzeichnung der Reproduktionen lichtelektrisch abgetasteter Bildvorlagen |
US3462547A (en) * | 1966-09-06 | 1969-08-19 | Stanford Research Inst | Data processing system for signals obtained from a video scanner |
JPS5751310B2 (fr) * | 1972-06-07 | 1982-11-01 | ||
US4103287A (en) * | 1973-12-17 | 1978-07-25 | Bell Telephone Laboratories, Incorporated | Variable length codes for high quality image encoding |
US3976826A (en) * | 1975-05-07 | 1976-08-24 | Western Electric Company, Inc. | Method and apparatus for generating line-by-line picture signal from transformed subpicture information |
US3953668A (en) * | 1975-05-27 | 1976-04-27 | Bell Telephone Laboratories, Incorporated | Method and arrangement for eliminating flicker in interlaced ordered dither images |
US4084196A (en) * | 1977-01-31 | 1978-04-11 | Dacom, Inc. | Electronic half-tone generating means for facsimile reproduction system |
US4150400A (en) * | 1977-03-31 | 1979-04-17 | International Business Machines Corporation | Methods of a coarse-scan/fine-print character reproduction with compression |
GB2009568B (en) * | 1977-11-28 | 1982-03-24 | Nippon Telegraph & Telephone | Picture signal coding apparatus |
-
1978
- 1978-09-19 US US05/943,734 patent/US4266249A/en not_active Expired - Lifetime
-
1979
- 1979-09-06 WO PCT/US1979/000693 patent/WO1980000645A1/fr unknown
- 1979-09-06 GB GB8015765A patent/GB2052922B/en not_active Expired
- 1979-09-06 DE DE2953109T patent/DE2953109C2/de not_active Expired
- 1979-09-06 NL NL7920086A patent/NL7920086A/nl unknown
- 1979-09-13 FR FR7922858A patent/FR2437124B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4266249A (en) | 1981-05-05 |
FR2437124A1 (fr) | 1980-04-18 |
DE2953109C2 (de) | 1988-03-31 |
NL7920086A (nl) | 1980-07-31 |
WO1980000645A1 (fr) | 1980-04-03 |
DE2953109T1 (de) | 1980-12-18 |
GB2052922A (en) | 1981-01-28 |
GB2052922B (en) | 1983-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |