GB2163026B - Still picture transmission - Google Patents

Still picture transmission

Info

Publication number: GB2163026B
Authority: GB; United Kingdom
Prior art keywords: still picture; picture transmission; transmission; still; picture
Prior art date: 1984-08-07
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

Application number

GB08519744A

Other versions

GB8519744D0 (en

GB2163026A (en

Inventor

Charles Nightingale

William J Welsh

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.)

British Telecommunications PLC

Original Assignee

British Telecommunications PLC

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.)

1984-08-07

Filing date

1985-08-06

Publication date

1988-06-29

1985-08-06 Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC

1985-09-11 Publication of GB8519744D0 publication Critical patent/GB8519744D0/en

1986-02-12 Publication of GB2163026A publication Critical patent/GB2163026A/en

1988-06-29 Application granted granted Critical

1988-06-29 Publication of GB2163026B publication Critical patent/GB2163026B/en

Status Expired legal-status Critical Current

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
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
- H04N1/642—Adapting to different types of images, e.g. characters, graphs, black and white image portions

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Color Television Systems (AREA)
Compression Or Coding Systems Of Tv Signals (AREA)

GB08519744A 1984-08-07 1985-08-06 Still picture transmission Expired GB2163026B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB848420077A GB8420077D0 (en)	1984-08-07	1984-08-07	Still picture transmission

Publications (3)

Publication Number	Publication Date
GB8519744D0 GB8519744D0 (en)	1985-09-11
GB2163026A GB2163026A (en)	1986-02-12
GB2163026B true GB2163026B (en)	1988-06-29

Family

ID=10565023

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GB848420077A Pending GB8420077D0 (en)	1984-08-07	1984-08-07	Still picture transmission
GB08519744A Expired GB2163026B (en)	1984-08-07	1985-08-06	Still picture transmission

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
GB848420077A Pending GB8420077D0 (en)	1984-08-07	1984-08-07	Still picture transmission

Country Status (1)

Country	Link
GB (2)	GB8420077D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3005007B2 (en) *	1989-12-21	2000-01-31	キヤノン株式会社	Image coding device
US5668646A (en) *	1990-02-06	1997-09-16	Canon Kabushiki Kaisha	Apparatus and method for decoding differently encoded multi-level and binary image data, the later corresponding to a color in the original image
ATE137377T1 (en) *	1990-02-06	1996-05-15	Canon Kk	IMAGE PROCESSING DEVICE
JP3072776B2 (en) *	1990-12-19	2000-08-07	キヤノン株式会社	Image processing device
JPH07327134A (en) *	1994-05-31	1995-12-12	Canon Inc	Image processing apparatus and method thereof
GB2295936B (en) *	1994-12-05	1997-02-05	Microsoft Corp	Progressive image transmission using discrete wavelet transforms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE371923B (en) *	1973-02-14	1974-12-02	Werns Inter Vvs Ab
US4414580A (en) *	1981-06-01	1983-11-08	Bell Telephone Laboratories, Incorporated	Progressive transmission of two-tone facsimile

1984
- 1984-08-07 GB GB848420077A patent/GB8420077D0/en active Pending
1985
- 1985-08-06 GB GB08519744A patent/GB2163026B/en not_active Expired

Also Published As

Publication number	Publication date
GB8519744D0 (en)	1985-09-11
GB2163026A (en)	1986-02-12
GB8420077D0 (en)	1984-09-12

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Legal Events

Date	Code	Title	Description
2005-08-31	PE20	Patent expired after termination of 20 years	Effective date: 20050805