GB2139448B - High definition video signal transmission - Google Patents

High definition video signal transmission

Info

Publication number: GB2139448B
Authority: GB; United Kingdom
Prior art keywords: video signal; signal transmission; high definition; definition video; transmission
Prior art date: 1983-03-02
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

GB08405435A

Other versions

GB8405435D0 (en

GB2139448A (en

Inventor

John Oliver Drewery

Ian Childs

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 Broadcasting Corp

Original Assignee

British Broadcasting Corp

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.)

1983-03-02

Filing date

1984-03-01

Publication date

1986-05-21

1983-03-02 Priority claimed from GB838305683A external-priority patent/GB8305683D0/en

1984-03-01 Application filed by British Broadcasting Corp filed Critical British Broadcasting Corp

1984-03-01 Priority to GB08405435A priority Critical patent/GB2139448B/en

1984-04-04 Publication of GB8405435D0 publication Critical patent/GB8405435D0/en

1984-11-07 Publication of GB2139448A publication Critical patent/GB2139448A/en

1986-05-21 Application granted granted Critical

1986-05-21 Publication of GB2139448B publication Critical patent/GB2139448B/en

Status Expired legal-status Critical Current

Links

230000008054 signal transmission Effects 0.000 title 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
- H04N7/122—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/24—High-definition television systems
- H04N11/26—High-definition television systems involving two-channel transmission

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Television Systems (AREA)

GB08405435A 1983-03-02 1984-03-01 High definition video signal transmission Expired GB2139448B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB08405435A GB2139448B (en)	1983-03-02	1984-03-01	High definition video signal transmission

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB838305683A GB8305683D0 (en)	1983-03-02	1983-03-02	Transmission of high definition television
GB08405435A GB2139448B (en)	1983-03-02	1984-03-01	High definition video signal transmission

Publications (3)

Publication Number	Publication Date
GB8405435D0 GB8405435D0 (en)	1984-04-04
GB2139448A GB2139448A (en)	1984-11-07
GB2139448B true GB2139448B (en)	1986-05-21

Family

ID=26285396

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08405435A Expired GB2139448B (en)	1983-03-02	1984-03-01	High definition video signal transmission

Country Status (1)

Country	Link
GB (1)	GB2139448B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4670783A (en) *	1984-12-21	1987-06-02	North American Philips Corporation	High resolution television system
US4942466A (en) *	1985-12-24	1990-07-17	British Broadcasting Corporation	Bandwidth compression for television signals
GB8703554D0 (en) *	1987-02-16	1987-03-25	British Broadcasting Corp	Signal transmission system
US4989091A (en) *	1988-11-16	1991-01-29	Scientific-Atlanta, Inc.	Scan converter for a high definition television system
NL8901399A (en) *	1989-06-02	1990-06-01	Philips Nv	METHOD AND APPARATUS FOR REDUCING THE LINE NUMBER OF AN IMAGE SIGNAL AND APPARATUS FOR INCREASING THE LINE NUMBER OF AN IMAGE SIGNAL
DE4113506A1 (en) *	1991-04-25	1992-10-29	Thomson Brandt Gmbh	Progressive-scan video signal translation into interlace format - using inverse half band filtering operations in encoder and decoder where vertical interpolates average adjacent lines

1984
- 1984-03-01 GB GB08405435A patent/GB2139448B/en not_active Expired

Also Published As

Publication number	Publication date
GB8405435D0 (en)	1984-04-04
GB2139448A (en)	1984-11-07

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Legal Events

Date	Code	Title	Description
1992-10-28	PCNP	Patent ceased through non-payment of renewal fee