GB1486774A - Television systems - Google Patents

Television systems

Info

Publication number
GB1486774A
GB1486774A GB1268677A GB1268677A GB1486774A GB 1486774 A GB1486774 A GB 1486774A GB 1268677 A GB1268677 A GB 1268677A GB 1268677 A GB1268677 A GB 1268677A GB 1486774 A GB1486774 A GB 1486774A
Authority
GB
United Kingdom
Prior art keywords
television
july
coded form
display
picture
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
Application number
GB1268677A
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.)
Independent Broadcasting Authority
Original Assignee
Independent Broadcasting Authority
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
Priority claimed from GB3620673A external-priority patent/GB1486772A/en
Application filed by Independent Broadcasting Authority filed Critical Independent Broadcasting Authority
Priority to GB1268677A priority Critical patent/GB1486774A/en
Priority to GB1512775A priority patent/GB1563794A/en
Publication of GB1486774A publication Critical patent/GB1486774A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/222—Control of the character-code memory
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/24—Generation of individual character patterns
    • G09G5/28—Generation of individual character patterns for enhancement of character form, e.g. smoothing
    • 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
    • H04N7/0884—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 additional display-information, e.g. menu for programme or channel selection
    • H04N7/0885—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 additional display-information, e.g. menu for programme or channel selection for the transmission of subtitles

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Television Systems (AREA)

Abstract

1486774 Television INDEPENDENT BROADCASTING AUTHORITY 29 July 1974 [30 July 1973] 12686/77 Divided out of 1486772 Heading H4F The subject-matter of this Specification is substantially the same as that described in parent Specification, but the claims are concerned with a television receiver system which may display, on a receiver screen, instead of, or additional to, the television picture, matrix or alphanumeric characters transmitted, in coded form, during one or two line periods in each field blanking period of a television signal, and may optionally display, separately or together with this television picture, characters received, in coded form, on a different television channel or independently of any video signal.
GB1268677A 1973-07-30 1974-07-29 Television systems Expired GB1486774A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1268677A GB1486774A (en) 1973-07-30 1974-07-29 Television systems
GB1512775A GB1563794A (en) 1974-07-29 1976-07-09 Television systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3620673A GB1486772A (en) 1973-07-30 1973-07-30 Television systems
GB1268677A GB1486774A (en) 1973-07-30 1974-07-29 Television systems

Publications (1)

Publication Number Publication Date
GB1486774A true GB1486774A (en) 1977-09-21

Family

ID=26249197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1268677A Expired GB1486774A (en) 1973-07-30 1974-07-29 Television systems

Country Status (1)

Country Link
GB (1) GB1486774A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005178A2 (en) * 1978-05-02 1979-11-14 Siemens Aktiengesellschaft Character display quality improvement circuit for a raster-scanned display
EP0005672A1 (en) * 1978-05-22 1979-11-28 Thomson-Csf Device for television titling apparatus
EP0273138A1 (en) * 1986-12-04 1988-07-06 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Device for decoding a satellite television signal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005178A2 (en) * 1978-05-02 1979-11-14 Siemens Aktiengesellschaft Character display quality improvement circuit for a raster-scanned display
EP0005178A3 (en) * 1978-05-02 1979-11-28 Siemens Aktiengesellschaft Berlin Und Munchen Character display quality improvement circuit for a raster-scanned display
EP0005672A1 (en) * 1978-05-22 1979-11-28 Thomson-Csf Device for television titling apparatus
EP0273138A1 (en) * 1986-12-04 1988-07-06 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Device for decoding a satellite television signal

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee