BE745949A - Disposition de circuits en vue de reduire les perturbations a frequenceplus elevee (bruit de fond) dans les signaux electriques a large bande,en particulier dans les signaux de television - Google Patents

Disposition de circuits en vue de reduire les perturbations a frequenceplus elevee (bruit de fond) dans les signaux electriques a large bande,en particulier dans les signaux de television

Info

Publication number
BE745949A
BE745949A BE745949DA BE745949A BE 745949 A BE745949 A BE 745949A BE 745949D A BE745949D A BE 745949DA BE 745949 A BE745949 A BE 745949A
Authority
BE
Belgium
Prior art keywords
provision
circuits
background noise
higher frequency
signals
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
H Radecke
Original Assignee
Fernseh 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
Application filed by Fernseh Gmbh filed Critical Fernseh Gmbh
Publication of BE745949A publication Critical patent/BE745949A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
BE745949D 1969-02-19 1970-02-13 Disposition de circuits en vue de reduire les perturbations a frequenceplus elevee (bruit de fond) dans les signaux electriques a large bande,en particulier dans les signaux de television BE745949A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691908247 DE1908247B2 (de) 1969-02-19 1969-02-19 Schaltungsanordnung zur verringerung von stoerungen hoeherer frequenz (rauschen) in breitbandigen elektrischen signalen insbesondere fernsehsignalen

Publications (1)

Publication Number Publication Date
BE745949A true BE745949A (fr) 1970-07-16

Family

ID=5725703

Family Applications (1)

Application Number Title Priority Date Filing Date
BE745949D BE745949A (fr) 1969-02-19 1970-02-13 Disposition de circuits en vue de reduire les perturbations a frequenceplus elevee (bruit de fond) dans les signaux electriques a large bande,en particulier dans les signaux de television

Country Status (6)

Country Link
US (1) US3602737A (de)
BE (1) BE745949A (de)
DE (1) DE1908247B2 (de)
FR (1) FR2031520B1 (de)
GB (1) GB1246243A (de)
NL (1) NL7002274A (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5428981Y2 (de) * 1974-06-17 1979-09-17
US3715477A (en) * 1971-03-11 1973-02-06 Rca Corp Video signal noise-limiting apparatus
US3701950A (en) * 1971-04-14 1972-10-31 Bell Telephone Labor Inc Narrow-band filter
JPS50102218A (de) * 1974-01-09 1975-08-13
US3946211A (en) * 1974-07-17 1976-03-23 Leeds & Northrup Company Amplitude limited filter
JPS5541588B2 (de) * 1974-11-21 1980-10-24
JPS524737A (en) * 1975-07-01 1977-01-14 Sony Corp Ghost image elimination circuit
US4057828A (en) * 1975-11-17 1977-11-08 Harris Corporation Contrast compression circuits
US4009334A (en) * 1976-03-17 1977-02-22 Eastman Kodak Company Video noise reduction circuit
US4110784A (en) * 1976-08-30 1978-08-29 Rca Corporation Noise reduction apparatus
US4167749A (en) * 1977-05-26 1979-09-11 Rca Corporation Noise reduction apparatus
JPS55117712A (en) * 1979-02-28 1980-09-10 Matsushita Electric Ind Co Ltd Noise reduction circuit of video signal recording and reproducing device
US4303943A (en) * 1980-03-24 1981-12-01 Magnavox Government & Industrial Electronics Adaptive enhancement of signal-to-noise ratio in television imagery
US4563704A (en) * 1981-06-19 1986-01-07 Victor Company Of Japan, Ltd. Noise reduction circuit for a video signal
DE3226432A1 (de) * 1981-10-14 1984-01-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur versteilerung der flanken eines videosignals
JPS58157285A (ja) * 1982-03-15 1983-09-19 Victor Co Of Japan Ltd 搬送色信号の雑音低減回路
US4573075A (en) * 1983-06-24 1986-02-25 Rca Corporation Digital signal coring apparatus with controllable coring threshold level
US4538178A (en) * 1983-06-24 1985-08-27 Rca Corporation Digital signal peaking apparatus with controllable peaking level
US4571511A (en) * 1983-06-27 1986-02-18 Rca Corporation Noise reduction system
FR2552607B1 (fr) * 1983-09-22 1985-10-25 Fernandez Enrique Procede de brouillage d'un signal de television et appareil de debrouillage correspondant
JPS60263512A (ja) * 1984-06-11 1985-12-27 Hitachi Ltd 波形補償方式
JPS6318811A (ja) * 1986-07-11 1988-01-26 Victor Co Of Japan Ltd 雑音低減回路
FR2605159B1 (fr) * 1986-10-08 1993-10-08 Production Creation Audiovisuell Correcteur anti-oscillations notamment pour filtre

Also Published As

Publication number Publication date
FR2031520B1 (de) 1974-03-01
US3602737A (en) 1971-08-31
GB1246243A (en) 1971-09-15
FR2031520A1 (de) 1970-11-20
DE1908247B2 (de) 1971-03-04
NL7002274A (de) 1970-08-21
DE1908247A1 (de) 1970-09-24

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