CA1165433A - Dispositif de blocage de signaux de modulation de chrominance - Google Patents

Dispositif de blocage de signaux de modulation de chrominance

Info

Publication number
CA1165433A
CA1165433A CA000357703A CA357703A CA1165433A CA 1165433 A CA1165433 A CA 1165433A CA 000357703 A CA000357703 A CA 000357703A CA 357703 A CA357703 A CA 357703A CA 1165433 A CA1165433 A CA 1165433A
Authority
CA
Canada
Prior art keywords
signals
signal
color
video
comparator
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.)
Expired
Application number
CA000357703A
Other languages
English (en)
Inventor
Richard S. Bannister
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.)
Grass Valley Group Inc
Original Assignee
Grass Valley Group Inc
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 Grass Valley Group Inc filed Critical Grass Valley Group Inc
Application granted granted Critical
Publication of CA1165433A publication Critical patent/CA1165433A/fr
Expired 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
    • H04N9/74—Circuits for processing colour signals for obtaining special effects
    • H04N9/75—Chroma key

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
CA000357703A 1979-09-04 1980-08-06 Dispositif de blocage de signaux de modulation de chrominance Expired CA1165433A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7195679A 1979-09-04 1979-09-04
US71,956 1979-09-04

Publications (1)

Publication Number Publication Date
CA1165433A true CA1165433A (fr) 1984-04-10

Family

ID=22104655

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000357703A Expired CA1165433A (fr) 1979-09-04 1980-08-06 Dispositif de blocage de signaux de modulation de chrominance

Country Status (6)

Country Link
JP (1) JPS604638B2 (fr)
CA (1) CA1165433A (fr)
DE (1) DE3032629C2 (fr)
FR (1) FR2464606A1 (fr)
GB (1) GB2059219B (fr)
NL (1) NL8004868A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408221A (en) * 1981-09-22 1983-10-04 Mccoy Reginald F H Television chroma-key systems
EP0147394B1 (fr) * 1983-06-13 1991-11-21 Ultimatte Corporation Composition automatique d'une image en couleurs par signaux codes
JPS6266791A (ja) * 1985-09-16 1987-03-26 ザ・グラス・バレ−・グル−プ・インコ−ポレイテツド クロマキ−装置
US4947255A (en) * 1988-09-19 1990-08-07 The Grass Valley Group, Inc. Video luminance self keyer
GB9109999D0 (en) * 1991-05-09 1991-07-03 Quantel Ltd Improvements in or relating to keying systems and methods for television image processing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778542A (en) * 1970-11-30 1973-12-11 Technicolor Blue screen travelling matte system
NL7509871A (nl) * 1975-08-20 1977-02-22 Philips Nv Kleurentelevisie chroma-sleutelsignaalgenerator.
US4041527A (en) * 1976-03-15 1977-08-09 The Grass Valley Group, Inc. Video effects generator

Also Published As

Publication number Publication date
DE3032629C2 (de) 1982-09-23
NL8004868A (nl) 1981-03-06
GB2059219B (en) 1984-05-16
JPS604638B2 (ja) 1985-02-05
FR2464606B1 (fr) 1983-12-23
DE3032629A1 (de) 1981-03-26
GB2059219A (en) 1981-04-15
FR2464606A1 (fr) 1981-03-06
JPS5637786A (en) 1981-04-11

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Legal Events

Date Code Title Description
MKEX Expiry