FR2372557A1 - Appareil de reproduction de signaux d'image avec modulation de vitesse de balayage du faisceau d'electrons - Google Patents

Appareil de reproduction de signaux d'image avec modulation de vitesse de balayage du faisceau d'electrons

Info

Publication number
FR2372557A1
FR2372557A1 FR7736193A FR7736193A FR2372557A1 FR 2372557 A1 FR2372557 A1 FR 2372557A1 FR 7736193 A FR7736193 A FR 7736193A FR 7736193 A FR7736193 A FR 7736193A FR 2372557 A1 FR2372557 A1 FR 2372557A1
Authority
FR
France
Prior art keywords
electron beam
speed modulation
image signal
reproducing apparatus
scan speed
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.)
Granted
Application number
FR7736193A
Other languages
English (en)
Other versions
FR2372557B1 (fr
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of FR2372557A1 publication Critical patent/FR2372557A1/fr
Application granted granted Critical
Publication of FR2372557B1 publication Critical patent/FR2372557B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/32—Velocity varied in dependence upon picture information

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Picture Signal Circuits (AREA)

Abstract

L'invention concerne un appareil de reproduction de signaux d'image avec une modulation de vitesse de balayage du faisceau d'électrons. Le signal d'image appliqué à la cathode du tube à rayons cathodiques est différencié et redressé, puis différencié à nouveau pour obtenir un signal de modulation de vitesse de balayage du faisceau dont les crêtes sont déplacées vers les parties de bas niveau du signal. Cette disposition assure la netteté horizontale de l'image sans diminuer la largeur des parties lumineuses ou blanches. L'invention s'applique notamment à des récepteurs de télévision en noir et blanc et en couleur.
FR7736193A 1976-11-30 1977-11-30 Appareil de reproduction de signaux d'image avec modulation de vitesse de balayage du faisceau d'electrons Granted FR2372557A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51144565A JPS5851710B2 (ja) 1976-11-30 1976-11-30 テレビジヨン受像機

Publications (2)

Publication Number Publication Date
FR2372557A1 true FR2372557A1 (fr) 1978-06-23
FR2372557B1 FR2372557B1 (fr) 1984-09-14

Family

ID=15365182

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736193A Granted FR2372557A1 (fr) 1976-11-30 1977-11-30 Appareil de reproduction de signaux d'image avec modulation de vitesse de balayage du faisceau d'electrons

Country Status (7)

Country Link
US (1) US4170785A (fr)
JP (1) JPS5851710B2 (fr)
CA (1) CA1087302A (fr)
DE (1) DE2753406C2 (fr)
FR (1) FR2372557A1 (fr)
GB (1) GB1565570A (fr)
NL (1) NL7713245A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468262A1 (fr) * 1979-10-23 1981-04-30 Rca Corp Dispositif de traitement de signaux pour modulation de la vitesse de balayage du faisceau

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5668073A (en) * 1979-11-07 1981-06-08 Canon Inc Outline correcting device of video signal
JPS60223381A (ja) * 1984-04-20 1985-11-07 Hitachi Ltd 走査速度変調回路
US4663653A (en) * 1985-11-22 1987-05-05 Rca Corporation Vertical detail enhancer
JPS63189210U (fr) * 1987-05-29 1988-12-05
US5072300A (en) * 1990-08-02 1991-12-10 Thomson Consumer Electronics, Inc. Beam scan velocity modulation apparatus with disabling circuit
US5093728A (en) * 1990-08-02 1992-03-03 Thomson Consumer Electronics, Inc. Beam scan velocity modulation apparatus
US5196941A (en) * 1990-08-02 1993-03-23 Rca Licensing Corporation Beam scan velocity modulation apparatus
MY108262A (en) * 1990-08-20 1996-09-30 Rca Licensing Corp Signal adaptive beam scan velocity modulation.
DE69321438T2 (de) * 1992-11-17 1999-05-12 Koninkl Philips Electronics Nv Anzeigevorrichtung mit Modulation der Abtastgeschwindigkeit
DE69333238D1 (de) * 1992-11-17 2003-11-13 Koninkl Philips Electronics Nv Wiedergabeanordnung mit einer Korrekturschaltung und Korrekturschaltung zum Gebrauch in einer solchen Anordnung
FR2711295A1 (fr) * 1993-10-13 1995-04-21 Philips Electronics Nv Appareil d'affichage d'images avec modulation de vitesse du spot.
JP3585990B2 (ja) * 1995-05-01 2004-11-10 富士写真フイルム株式会社 画像処理方法
JP3557722B2 (ja) * 1995-06-14 2004-08-25 三菱電機株式会社 走査速度変調回路
US6493040B1 (en) * 1999-05-26 2002-12-10 Thomson Licensing S.A. Scan velocity modulation circuit with multi-mode operation
US6870331B2 (en) * 2000-05-31 2005-03-22 Sarnoff Corporation Space-saving cathode ray tube employing a non-self-converging deflection yoke
EP1505824A1 (fr) * 2003-08-08 2005-02-09 St Microelectronics S.A. Correction de la vitesse de balayage d'un écran d'affichage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678964A (en) * 1950-08-14 1954-05-18 Hazeltine Research Inc Modifying the transient response of image-reproducers
US3980819A (en) * 1974-11-01 1976-09-14 Zenith Radio Corporation Edge enhancement for television images

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227630A (en) * 1937-11-05 1941-01-07 Hygrade Sylvania Corp Television receiving system
US3752916A (en) * 1971-09-30 1973-08-14 Ellanin Investments Method and apparatus for improving the horizontal sharpness of electronically scanned images
GB1423434A (en) * 1972-03-23 1976-02-04 Sony Corp Image-reproducing devices
US3936872A (en) * 1973-12-21 1976-02-03 Sony Corporation Video signal reproducing device with electron beam scanning velocity modulation
US4080628A (en) * 1977-03-14 1978-03-21 Zenith Radio Corporation Expanded-signal image enhancement system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678964A (en) * 1950-08-14 1954-05-18 Hazeltine Research Inc Modifying the transient response of image-reproducers
US3980819A (en) * 1974-11-01 1976-09-14 Zenith Radio Corporation Edge enhancement for television images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468262A1 (fr) * 1979-10-23 1981-04-30 Rca Corp Dispositif de traitement de signaux pour modulation de la vitesse de balayage du faisceau

Also Published As

Publication number Publication date
NL7713245A (nl) 1978-06-01
JPS5368511A (en) 1978-06-19
FR2372557B1 (fr) 1984-09-14
JPS5851710B2 (ja) 1983-11-17
CA1087302A (fr) 1980-10-07
US4170785A (en) 1979-10-09
GB1565570A (en) 1980-04-23
DE2753406C2 (de) 1985-07-18
DE2753406A1 (de) 1978-06-29

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Legal Events

Date Code Title Description
ST Notification of lapse