FR2396482A1 - Circuit de fixation de niveau perfectionne pour signaux de television en couleur - Google Patents

Circuit de fixation de niveau perfectionne pour signaux de television en couleur

Info

Publication number
FR2396482A1
FR2396482A1 FR7819535A FR7819535A FR2396482A1 FR 2396482 A1 FR2396482 A1 FR 2396482A1 FR 7819535 A FR7819535 A FR 7819535A FR 7819535 A FR7819535 A FR 7819535A FR 2396482 A1 FR2396482 A1 FR 2396482A1
Authority
FR
France
Prior art keywords
adder
television signals
color television
perfected
circuit
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
FR7819535A
Other languages
English (en)
Other versions
FR2396482B1 (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
Priority claimed from JP7749777A external-priority patent/JPS5412520A/ja
Priority claimed from JP7813677A external-priority patent/JPS5412629A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2396482A1 publication Critical patent/FR2396482A1/fr
Application granted granted Critical
Publication of FR2396482B1 publication Critical patent/FR2396482B1/fr
Granted legal-status Critical Current

Links

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
    • H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

L'invention concerne un circuit qui verrouille des signaux de télévision en couleur sur leur niveau de tension constante de signal. Il comprend un démodulateur 3, un premier additionneur 23, un deuxième additionneur 24, un circuit matriciel 25, une source Eo de signal de référence, un troisième additionneur 28, un quatrième additionneur 29, un cinquième additionneur 30, un premier comparateur 31, un deuxième comparateur 32, un premier circuit d'échantillonnage 33, 26 et un deuxième circuit d'échantillonnage 34, 27. Le circuit de l'invention est plus simple et plus économique que les circuits de la technique antérieure.
FR7819535A 1977-06-29 1978-06-29 Circuit de fixation de niveau perfectionne pour signaux de television en couleur Granted FR2396482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7749777A JPS5412520A (en) 1977-06-29 1977-06-29 Color television picture receiver
JP7813677A JPS5412629A (en) 1977-06-30 1977-06-30 Chrominance signal clamp/matrix circuit

Publications (2)

Publication Number Publication Date
FR2396482A1 true FR2396482A1 (fr) 1979-01-26
FR2396482B1 FR2396482B1 (fr) 1982-12-03

Family

ID=26418567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819535A Granted FR2396482A1 (fr) 1977-06-29 1978-06-29 Circuit de fixation de niveau perfectionne pour signaux de television en couleur

Country Status (6)

Country Link
US (1) US4183050A (fr)
CA (1) CA1089981A (fr)
DE (1) DE2828654A1 (fr)
FR (1) FR2396482A1 (fr)
GB (1) GB2000657B (fr)
NL (1) NL191046C (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105547A (en) * 1981-09-11 1983-03-23 Philips Electronic Associated Clamping video signals
JPS58100590A (ja) * 1981-12-11 1983-06-15 Sony Corp サンプリング出力の合成方法
JPS58135121U (ja) * 1982-03-05 1983-09-10 パイオニア株式会社 レベルシフト回路
DE3323750A1 (de) * 1983-07-01 1985-01-17 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Klemmschaltung fuer ein signal ohne ausreichende austastluecken, insbesondere fuer ein videosignal
US4554577A (en) * 1983-12-14 1985-11-19 Rca Corporation Keyed DC stabilization system with protection from error introduction during vertical sync interval
US4549203A (en) * 1983-12-14 1985-10-22 Rca Corporation DC Stabilization system
US4554588A (en) * 1983-12-14 1985-11-19 Rca Corporation Control system for luminance/chrominance signal processing circuits
JPS61140279A (ja) * 1984-12-12 1986-06-27 Toshiba Corp 映像信号処理回路
US4617590A (en) * 1985-02-04 1986-10-14 Eastman Kodak Company Clamping circuit for video signals
US4802015A (en) * 1985-08-02 1989-01-31 Canon Kabushiki Kaisha Image reproducing apparatus
JPS6288495A (ja) * 1985-10-14 1987-04-22 Fuji Photo Film Co Ltd 磁気記録装置の色差線順次回路
JPH02287594A (ja) * 1989-04-28 1990-11-27 Sony Corp クリアブルー回路
JP2863597B2 (ja) * 1990-03-30 1999-03-03 株式会社東芝 クランプ回路
US5272522A (en) * 1990-04-30 1993-12-21 Thomson Consumer Electronics, Inc. Video signal processing circuits
EP2700066B1 (fr) 2011-04-21 2019-03-06 University of Washington through its Center for Commercialization Dispositifs d'affichage vidéo sans danger pour la myopie
WO2017127457A2 (fr) 2016-01-18 2017-07-27 Waveshift Llc Évaluation et réduction des effets myopiagéniques d'affichages électroniques

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575551A (en) * 1968-05-17 1971-04-20 Zenith Radio Corp Chrominance demodulator blanking circuit
FR2096627A1 (fr) * 1969-12-19 1972-02-25 Radiotechnique Compelec

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7215775A (fr) * 1972-11-22 1974-05-27
GB1536215A (en) * 1976-07-05 1978-12-20 Decca Ltd Clamping circuits for television signals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575551A (en) * 1968-05-17 1971-04-20 Zenith Radio Corp Chrominance demodulator blanking circuit
FR2096627A1 (fr) * 1969-12-19 1972-02-25 Radiotechnique Compelec

Also Published As

Publication number Publication date
GB2000657A (en) 1979-01-10
GB2000657B (en) 1982-04-28
NL191046B (nl) 1994-07-18
DE2828654A1 (de) 1979-01-18
FR2396482B1 (fr) 1982-12-03
NL7807027A (nl) 1979-01-03
US4183050A (en) 1980-01-08
CA1089981A (fr) 1980-11-18
NL191046C (nl) 1994-12-16
DE2828654C2 (fr) 1988-01-14

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