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MY108674A - Television transmission system - Google Patents

Television transmission system

Info

Publication number
MY108674A
MY108674A MYPI91000343A MYPI19910343A MY108674A MY 108674 A MY108674 A MY 108674A MY PI91000343 A MYPI91000343 A MY PI91000343A MY PI19910343 A MYPI19910343 A MY PI19910343A MY 108674 A MY108674 A MY 108674A
Authority
MY
Malaysia
Prior art keywords
additional information
present
colour
amplitude
synchronising
Prior art date
Application number
MYPI91000343A
Inventor
-Ing Martin Plantholt Dr
Original Assignee
Thomson Brandt Gmbh
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25890851&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MY108674(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE4007092A external-priority patent/DE4007092A1/en
Priority claimed from DE4021698A external-priority patent/DE4021698A1/en
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of MY108674A publication Critical patent/MY108674A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/007—Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H04N11/167—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/24—High-definition television systems
    • H04N11/28—High-definition television systems involving bandwidth reduction, e.g. subsampling

Landscapes

  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Color Television Systems (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Details Of Television Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Studio Devices (AREA)

Abstract

FOR COMPATIBILITY REASONS THE ADDITIONAL INFORMATION NEEDED IN LETTERBOX COLOUR TV SYSTEMS IS TRANSMITTED WITH MARKEDLY REDUCED AMPLITUDE, WHEREBY LOW FREQUENCIES HAVE A RELATIVE HIGH AMPLITUDE. THEREFORE THE SIGNAL-TO-NOISE RATIO IS REDUCED AND IN PRESENT TV RECEIVERS SYNCHRONISING ERRORS OCCUR. BY TRANSMITTING THE ADDITIONAL INFORMATION IN THE FORM OF A VESTIGAL SIDEBAND MODULATION OF THE COLOUR CARRIER THE AMPLITUDE OF THE ADDITIONAL INFORMATION CAN BECOME ENLARGED WITHOUT THE ARISING OF SYNCHRONISING ERRORS IN PRESENT TV RECEIVERS. THE NYQUIST-SLOPE AT THE COLOUR CARRIER IS ADVANTAGEOUSLY GENERATED BY USING PRESENT IF FILTERS. IF THE PHASE COINCIDES WITH THE V PHASE OF THE COLOUR CARRIER POSSIBLE DISTURBANCES OF THE COMPATIBLE RECEPTION HAVE AN ADVANTAGEOUSLY LOW LEVEL. (FIG. 3)
MYPI91000343A 1990-03-07 1991-02-05 Television transmission system MY108674A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007092A DE4007092A1 (en) 1990-03-07 1990-03-07 TV video signal transmission system of letter-box type - modulates chrominance carrier by extra information signals using filters
DE4021698A DE4021698A1 (en) 1990-07-07 1990-07-07 Letter-box colour television system

Publications (1)

Publication Number Publication Date
MY108674A true MY108674A (en) 1996-10-31

Family

ID=25890851

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI91000343A MY108674A (en) 1990-03-07 1991-02-05 Television transmission system

Country Status (17)

Country Link
EP (1) EP0518946B1 (en)
JP (1) JPH05505076A (en)
KR (1) KR100212384B1 (en)
CN (1) CN1027486C (en)
AT (1) ATE131336T1 (en)
AU (1) AU642725B2 (en)
BR (1) BR9106110A (en)
DE (1) DE59107039D1 (en)
DK (1) DK0518946T3 (en)
ES (1) ES2082199T3 (en)
FI (1) FI923975A0 (en)
GR (1) GR3018339T3 (en)
HK (1) HK112396A (en)
HU (1) HUT63724A (en)
MY (1) MY108674A (en)
NO (1) NO179350C (en)
WO (1) WO1991014346A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2099127T3 (en) * 1990-06-06 1997-05-16 Philips Electronics Nv EXTENDED TELEVISION SYSTEM WITH MAILBOX PROCEDURE.
DE4111979A1 (en) 1991-04-12 1992-10-15 Thomson Brandt Gmbh DEVICE FOR IMAGE SIGNAL RECORDING AND / OR PLAYBACK
EP0543038A1 (en) * 1991-11-19 1993-05-26 Samsung Electronics Co., Ltd. Color-under chroma channel encoded with auxiliary signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414452C1 (en) * 1984-04-17 1985-10-10 Robert Bosch Gmbh, 7000 Stuttgart Method for compatibly transmitting a colour television signal containing additional information
US4882614A (en) * 1986-07-14 1989-11-21 Matsushita Electric Industrial Co., Ltd. Multiplex signal processing apparatus
US5053859A (en) * 1987-09-02 1991-10-01 Scientific-Atlanta, Inc. High definition B-MAC television signal transmission system
DE3930964A1 (en) * 1989-09-15 1991-03-28 Thomson Brandt Gmbh TELEVISION TRANSMISSION SYSTEM

Also Published As

Publication number Publication date
CN1027486C (en) 1995-01-18
KR100212384B1 (en) 1999-08-02
NO179350B (en) 1996-06-10
ATE131336T1 (en) 1995-12-15
NO923460L (en) 1992-09-04
AU7455491A (en) 1991-10-10
BR9106110A (en) 1993-02-24
FI923975A (en) 1992-09-04
NO179350C (en) 1996-09-18
DE59107039D1 (en) 1996-01-18
JPH05505076A (en) 1993-07-29
DK0518946T3 (en) 1996-02-12
WO1991014346A1 (en) 1991-09-19
FI923975A0 (en) 1992-09-04
GR3018339T3 (en) 1996-03-31
AU642725B2 (en) 1993-10-28
CN1054696A (en) 1991-09-18
ES2082199T3 (en) 1996-03-16
EP0518946A1 (en) 1992-12-23
EP0518946B1 (en) 1995-12-06
HK112396A (en) 1996-07-05
HUT63724A (en) 1993-09-28
NO923460D0 (en) 1992-09-04

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