WO1998026591A3 - Digital transmission of television signals - Google Patents

Digital transmission of television signals Download PDF

Info

Publication number
WO1998026591A3
WO1998026591A3 PCT/IB1997/001515 IB9701515W WO9826591A3 WO 1998026591 A3 WO1998026591 A3 WO 1998026591A3 IB 9701515 W IB9701515 W IB 9701515W WO 9826591 A3 WO9826591 A3 WO 9826591A3
Authority
WO
WIPO (PCT)
Prior art keywords
teletext
format
digital transmission
television signals
transmission
Prior art date
Application number
PCT/IB1997/001515
Other languages
French (fr)
Other versions
WO1998026591A2 (en
Inventor
Gestel Henricus Antonius W Van
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to EP97913366A priority Critical patent/EP0883961A2/en
Priority to AU50655/98A priority patent/AU5065598A/en
Priority to JP10526416A priority patent/JP2000505975A/en
Publication of WO1998026591A2 publication Critical patent/WO1998026591A2/en
Publication of WO1998026591A3 publication Critical patent/WO1998026591A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital

Landscapes

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

Abstract

Transmission of teletext in a digital television format is disclosed. The video information is transmitted in the conventional YUYV format. For teletext transmission, the U and V sample periods are used to transmit additional luminance samples. Accordingly, teletext is transmitted in YYYY format, which in the CCIR 601 system corresponds to a 27 MHz sampling frequency. Teletext recovery is much more reliable.
PCT/IB1997/001515 1996-12-12 1997-12-04 Digital transmission of television signals WO1998026591A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97913366A EP0883961A2 (en) 1996-12-12 1997-12-04 Digital transmission of television signals
AU50655/98A AU5065598A (en) 1996-12-12 1997-12-04 Digital transmission of television signals
JP10526416A JP2000505975A (en) 1996-12-12 1997-12-04 Digital transmission of television signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96203528 1996-12-12
EP96203528.3 1996-12-12

Publications (2)

Publication Number Publication Date
WO1998026591A2 WO1998026591A2 (en) 1998-06-18
WO1998026591A3 true WO1998026591A3 (en) 1998-08-13

Family

ID=8224691

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1997/001515 WO1998026591A2 (en) 1996-12-12 1997-12-04 Digital transmission of television signals

Country Status (6)

Country Link
EP (1) EP0883961A2 (en)
JP (1) JP2000505975A (en)
KR (1) KR19990082459A (en)
CN (1) CN1215527A (en)
AU (1) AU5065598A (en)
WO (1) WO1998026591A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100633098B1 (en) * 2004-11-23 2006-10-11 삼성전자주식회사 Display apparatus capable of setting optimized external input and method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786178A (en) * 1971-12-09 1974-01-15 Ted Bildplatten Circuit for producing a three line sectional color television signal
US5264920A (en) * 1991-05-24 1993-11-23 Matsushita Electric Industrial Co. Ltd. Word rate conversion processing device for processor circuit for processing digital component video signals sampled by different sampling frequencies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786178A (en) * 1971-12-09 1974-01-15 Ted Bildplatten Circuit for producing a three line sectional color television signal
US5264920A (en) * 1991-05-24 1993-11-23 Matsushita Electric Industrial Co. Ltd. Word rate conversion processing device for processor circuit for processing digital component video signals sampled by different sampling frequencies

Also Published As

Publication number Publication date
WO1998026591A2 (en) 1998-06-18
EP0883961A2 (en) 1998-12-16
KR19990082459A (en) 1999-11-25
CN1215527A (en) 1999-04-28
JP2000505975A (en) 2000-05-16
AU5065598A (en) 1998-07-03

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