DK169651B1 - Fremgangsmåde og apparat til afstemning af et afstembart filter med henblik på forbedring af signal/støj-forholdet under anvendelse af basisbåndsignaler til et FM-fjernsynssystem - Google Patents

Fremgangsmåde og apparat til afstemning af et afstembart filter med henblik på forbedring af signal/støj-forholdet under anvendelse af basisbåndsignaler til et FM-fjernsynssystem Download PDF

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Publication number
DK169651B1
DK169651B1 DK375486A DK375486A DK169651B1 DK 169651 B1 DK169651 B1 DK 169651B1 DK 375486 A DK375486 A DK 375486A DK 375486 A DK375486 A DK 375486A DK 169651 B1 DK169651 B1 DK 169651B1
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DK
Denmark
Prior art keywords
signal
line
filter
delayed
luminance
Prior art date
Application number
DK375486A
Other languages
Danish (da)
English (en)
Other versions
DK375486A (da
DK375486D0 (da
Inventor
Ii Joseph Graham Mobley
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of DK375486A publication Critical patent/DK375486A/da
Publication of DK375486D0 publication Critical patent/DK375486D0/da
Application granted granted Critical
Publication of DK169651B1 publication Critical patent/DK169651B1/da

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
    • 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
    • H04N11/08—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using sequential signals only
    • 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
    • H04N11/146—Decoding means therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Noise Elimination (AREA)
  • Television Signal Processing For Recording (AREA)
  • Networks Using Active Elements (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Details Of Television Scanning (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmitters (AREA)
DK375486A 1984-12-19 1986-08-06 Fremgangsmåde og apparat til afstemning af et afstembart filter med henblik på forbedring af signal/støj-forholdet under anvendelse af basisbåndsignaler til et FM-fjernsynssystem DK169651B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US68368084 1984-12-19
US06/683,680 US4584599A (en) 1984-12-19 1984-12-19 Signal to noise ratio enhancement using baseband signals in an FM television system
PCT/US1985/002092 WO1986003919A1 (en) 1984-12-19 1985-10-25 Signal to noise ratio enhancement using baseband signals in an fm television system
US8502092 1985-10-25

Publications (3)

Publication Number Publication Date
DK375486A DK375486A (da) 1986-08-06
DK375486D0 DK375486D0 (da) 1986-08-06
DK169651B1 true DK169651B1 (da) 1995-01-02

Family

ID=24745024

Family Applications (1)

Application Number Title Priority Date Filing Date
DK375486A DK169651B1 (da) 1984-12-19 1986-08-06 Fremgangsmåde og apparat til afstemning af et afstembart filter med henblik på forbedring af signal/støj-forholdet under anvendelse af basisbåndsignaler til et FM-fjernsynssystem

Country Status (15)

Country Link
US (3) US4584599A (fi)
EP (1) EP0207085B1 (fi)
JP (1) JPH0628468B2 (fi)
CN (1) CN85108684B (fi)
AT (1) ATE63025T1 (fi)
AU (1) AU579427B2 (fi)
BR (1) BR8507120A (fi)
CA (1) CA1248219A (fi)
DE (1) DE3582677D1 (fi)
DK (1) DK169651B1 (fi)
FI (1) FI86494C (fi)
MX (1) MX161656A (fi)
NO (1) NO169369C (fi)
WO (1) WO1986003919A1 (fi)
ZA (1) ZA858568B (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679247A (en) * 1985-03-27 1987-07-07 Cincinnati Microwave, Inc. FM receiver
US4731872A (en) * 1985-03-27 1988-03-15 Cincinnati Microwave, Inc. FM TVRO receiver with improved oscillating limiter
JPH01117573A (ja) * 1987-10-30 1989-05-10 Pioneer Electron Corp ビデオ信号のノイズ抑制装置
FR2659508A1 (fr) * 1990-03-09 1991-09-13 Portenseigne Radiotechnique Demodulateur de frequences a abaissement de seuil.
US5173776A (en) * 1990-06-06 1992-12-22 Electroscan Corporation Apparatus and method for improving the signal-to-noise ratio of video display signals
US5097221A (en) * 1990-12-21 1992-03-17 The United States Of America As Represented By The Secretary Of The Navy Adaptive filter technique for suppression of wideband or offset narrowband radio frequency interference
GB9028098D0 (en) * 1990-12-27 1991-02-13 Ferguson Ltd Television receiver
JP3480477B2 (ja) * 1995-07-26 2003-12-22 ソニー株式会社 動き検出回路および動き検出方法、並びに輝度・色信号分離装置
US7298418B2 (en) * 2004-02-06 2007-11-20 Broadcom Corporation Method and system for processing in a non-line locked system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280279A1 (fr) * 1974-07-26 1976-02-20 Thomson Csf Perfectionnement aux recepteurs de television en couleur du systeme secam
US3938181A (en) * 1974-10-21 1976-02-10 Rca Corporation Automatic luminance channel frequency response control apparatus
US4035730A (en) * 1976-03-31 1977-07-12 Scientific-Atlanta, Inc. FM noise threshold extension demodulator apparatus
GB1588193A (en) * 1977-04-15 1981-04-15 British Broadcasting Corp Processing colour television signals
US4101837A (en) * 1977-05-11 1978-07-18 Scientific-Atlanta, Inc. Threshold extension fm demodulator apparatus for wide band width fm signals
EP0004457B2 (en) * 1978-03-29 1988-09-21 British Broadcasting Corporation Processing method and circuit for PAL colour television signals
NL7803910A (nl) * 1978-04-13 1979-10-16 Philips Nv Kamfilterschakeling.
US4293818A (en) * 1979-01-22 1981-10-06 International Telephone And Telegraph Corporation Frequency modulation threshold extension demodulator utilizing frequency compression feedback with frequency drift correction
JPS5824844B2 (ja) * 1979-04-10 1983-05-24 オリンパス光学工業株式会社 カウンタ付テ−プレコ−ダ
JPS603266B2 (ja) * 1979-09-12 1985-01-26 株式会社日立製作所 搬送色信号の位相調整方式
JPS56153892A (en) * 1980-04-28 1981-11-28 Sony Corp Comb type filter
US4390894A (en) * 1980-08-20 1983-06-28 U.S. Philips Corporation Noise suppression circuit for a video signal
FR2490427B1 (fr) * 1980-09-16 1986-04-18 Thomson Csf Demodulateur d'un signal module en frequence et systeme de television comportant un tel demodulateur
US4451792A (en) * 1981-10-23 1984-05-29 Motorola, Inc. Auto-tuned frequency discriminator

Also Published As

Publication number Publication date
FI86494B (fi) 1992-05-15
AU579427B2 (en) 1988-11-24
FI863341A0 (fi) 1986-08-18
USRE36708E (en) 2000-05-23
US4641181A (en) 1987-02-03
ZA858568B (en) 1986-06-25
NO863322L (no) 1986-08-18
NO863322D0 (no) 1986-08-18
ATE63025T1 (de) 1991-05-15
EP0207085B1 (en) 1991-04-24
MX161656A (es) 1990-12-05
FI86494C (fi) 1992-08-25
EP0207085A4 (en) 1987-04-28
DK375486A (da) 1986-08-06
DK375486D0 (da) 1986-08-06
BR8507120A (pt) 1987-03-31
FI863341A (fi) 1986-08-18
EP0207085A1 (en) 1987-01-07
JPH0628468B2 (ja) 1994-04-13
DE3582677D1 (de) 1991-05-29
NO169369B (no) 1992-03-02
AU5064385A (en) 1986-07-22
CN85108684A (zh) 1986-07-09
CA1248219A (en) 1989-01-03
WO1986003919A1 (en) 1986-07-03
US4584599A (en) 1986-04-22
JPS62501185A (ja) 1987-05-07
CN85108684B (zh) 1988-08-10
NO169369C (no) 1992-06-10

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed