DE69221183T2 - Bildübertragungsverfahren und -gerät - Google Patents

Bildübertragungsverfahren und -gerät

Info

Publication number
DE69221183T2
DE69221183T2 DE69221183T DE69221183T DE69221183T2 DE 69221183 T2 DE69221183 T2 DE 69221183T2 DE 69221183 T DE69221183 T DE 69221183T DE 69221183 T DE69221183 T DE 69221183T DE 69221183 T2 DE69221183 T2 DE 69221183T2
Authority
DE
Germany
Prior art keywords
transmission method
image transmission
image
transmission
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 - Fee Related
Application number
DE69221183T
Other languages
English (en)
Other versions
DE69221183D1 (de
Inventor
Hiroyuki Nakanishi
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
Publication of DE69221183D1 publication Critical patent/DE69221183D1/de
Application granted granted Critical
Publication of DE69221183T2 publication Critical patent/DE69221183T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00Image coding
    • G06T9/004Predictors, e.g. intraframe, interframe coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44Secrecy systems
    • H04N1/448Rendering the image unintelligible, e.g. scrambling
    • H04N1/4486Rendering the image unintelligible, e.g. scrambling using digital data encryption
DE69221183T 1991-03-26 1992-03-25 Bildübertragungsverfahren und -gerät Expired - Fee Related DE69221183T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06165091A JP3190056B2 (ja) 1991-03-26 1991-03-26 画像伝送装置、画像符号化装置、画像復号装置、及びそれらの方法

Publications (2)

Publication Number Publication Date
DE69221183D1 DE69221183D1 (de) 1997-09-04
DE69221183T2 true DE69221183T2 (de) 1997-11-20

Family

ID=13177316

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69221183T Expired - Fee Related DE69221183T2 (de) 1991-03-26 1992-03-25 Bildübertragungsverfahren und -gerät

Country Status (4)

Country Link
US (1) US5715332A (de)
EP (1) EP0506405B1 (de)
JP (1) JP3190056B2 (de)
DE (1) DE69221183T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2147641C (en) * 1992-10-21 1999-12-21 Hideki Imai Copying machine with encryption function
AU3484495A (en) * 1995-09-13 1997-04-01 Hitachi Limited Method and device for compressing and ciphering data
US6411714B1 (en) 1995-09-13 2002-06-25 Hitachi, Ltd. Data decompression/decryption method and system
DE19654342C2 (de) * 1996-12-24 1998-10-15 Karl Michael Marks Verfahren zur Übermittlung von komprimierten Daten
US6892343B2 (en) 2000-03-27 2005-05-10 Board Of Regents Of The University Of Nebraska System and method for joint source-channel encoding, with symbol decoding and error correction
GB0021891D0 (en) * 2000-09-06 2000-10-25 Wave Ltd M Adaptive video delivery
JP2005151291A (ja) * 2003-11-18 2005-06-09 Fuji Xerox Co Ltd 画像形成装置および交換部品
JP2008061041A (ja) * 2006-08-31 2008-03-13 Sharp Corp 通信システム、プログラムおよび記録媒体

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302775A (en) * 1978-12-15 1981-11-24 Compression Labs, Inc. Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback
DE2908979C3 (de) * 1979-03-08 1982-03-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur verschlüsselten Übertragung von Faksimile-Daten
US4325085A (en) * 1980-06-09 1982-04-13 Digital Communications Corporation Method and apparatus for adaptive facsimile compression using a two dimensional maximum likelihood predictor
US4751742A (en) * 1985-05-07 1988-06-14 Avelex Priority coding of transform coefficients
US4878246A (en) * 1988-05-02 1989-10-31 Pitney Bowes Inc. Method and apparatus for generating encryption/decryption key
JPH0813075B2 (ja) * 1988-07-01 1996-02-07 村田機械株式会社 ファクシミリ通信方式
US5136396A (en) * 1988-08-30 1992-08-04 Canon Kabushiki Kaisha Image encoding method
JP2584840B2 (ja) * 1988-08-30 1997-02-26 キヤノン株式会社 画像の階層的符号化装置
JPH0294836A (ja) * 1988-09-30 1990-04-05 Aisin Seiki Co Ltd 秘匿通信制御装置
US5086487A (en) * 1988-11-24 1992-02-04 Canon Kabushiki Kaisha Method and apparatus for image encoding in which reference pixels for predictive encoding can be selected based on image size
JPH02146866A (ja) * 1988-11-28 1990-06-06 Sharp Corp ファクシミリ通信装置
EP0372950B1 (de) * 1988-12-08 1995-07-05 Canon Kabushiki Kaisha Bildreduzierungsvorrichtung
JP2756301B2 (ja) * 1989-04-10 1998-05-25 キヤノン株式会社 画像編集方法及び装置
US5117458A (en) * 1989-11-01 1992-05-26 Hitachi, Ltd. Secret information service system and method
JP2782102B2 (ja) * 1989-12-18 1998-07-30 株式会社リコー ファクシミリ装置
EP0453229B1 (de) * 1990-04-17 1997-06-18 Matsushita Electric Industrial Co., Ltd. Verfahren zur Übertragung von Kodes mit variabler Länge
JPH04213242A (ja) * 1990-12-07 1992-08-04 Hitachi Ltd 限定同報通信システム

Also Published As

Publication number Publication date
JPH04296169A (ja) 1992-10-20
US5715332A (en) 1998-02-03
EP0506405B1 (de) 1997-07-30
EP0506405A2 (de) 1992-09-30
EP0506405A3 (en) 1993-02-24
JP3190056B2 (ja) 2001-07-16
DE69221183D1 (de) 1997-09-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee