NL8201399A - Stelsel voor het opwekken van een chromasleutelschakelsignaal. - Google Patents

Stelsel voor het opwekken van een chromasleutelschakelsignaal. Download PDF

Info

Publication number
NL8201399A
NL8201399A NL8201399A NL8201399A NL8201399A NL 8201399 A NL8201399 A NL 8201399A NL 8201399 A NL8201399 A NL 8201399A NL 8201399 A NL8201399 A NL 8201399A NL 8201399 A NL8201399 A NL 8201399A
Authority
NL
Netherlands
Prior art keywords
signal
switching signal
chroma key
key switching
luminance
Prior art date
Application number
NL8201399A
Other languages
English (en)
Dutch (nl)
Original Assignee
Ampex
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 Ampex filed Critical Ampex
Publication of NL8201399A publication Critical patent/NL8201399A/nl

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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
    • H04N9/74—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)
NL8201399A 1981-04-10 1982-04-01 Stelsel voor het opwekken van een chromasleutelschakelsignaal. NL8201399A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/252,864 US4386363A (en) 1981-04-10 1981-04-10 Chroma key switching signal generator
US25286481 1981-04-10

Publications (1)

Publication Number Publication Date
NL8201399A true NL8201399A (nl) 1982-11-01

Family

ID=22957873

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8201399A NL8201399A (nl) 1981-04-10 1982-04-01 Stelsel voor het opwekken van een chromasleutelschakelsignaal.

Country Status (8)

Country Link
US (1) US4386363A (fr)
JP (1) JPS57178490A (fr)
AU (1) AU545597B2 (fr)
CA (1) CA1169545A (fr)
DE (1) DE3213298C2 (fr)
FR (1) FR2503968A1 (fr)
GB (1) GB2096858B (fr)
NL (1) NL8201399A (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1187166A (fr) * 1981-07-09 1985-05-14 Kaichi Yamamoto Dispositif generateur de signaux de chrominance numeriques
US4862251A (en) * 1984-04-09 1989-08-29 Corporate Communications Consultants, Inc. Color correction system and method
US4811084A (en) * 1984-04-09 1989-03-07 Corporate Communications Consultants, Inc. Video color detector and chroma key device and method
GB2158320A (en) * 1984-04-26 1985-11-06 Philips Electronic Associated Generating a chroma keying signal
US4827344A (en) * 1985-02-28 1989-05-02 Intel Corporation Apparatus for inserting part of one video image into another video image
IT1188385B (it) * 1985-02-28 1988-01-07 Rca Corp Apparato e metodo per la sovrapposizione di immagini video
WO1987006419A1 (fr) * 1986-04-14 1987-10-22 Corporate Communications Consultants, Inc. Systeme et procede de correction chromatique
JPS6370688A (ja) * 1986-09-12 1988-03-30 Hitachi Ltd クロマキ−方式
US4771192A (en) * 1986-11-14 1988-09-13 The Grass Valley Group, Inc. Digital clip and gain circuit
GB8629832D0 (en) * 1986-12-13 1987-01-21 Quantel Ltd Video graphics systems
KR900005922U (ko) * 1988-08-02 1990-03-09 삼성전자 주식회사 동일 영상신호 검출시 자화면 아트 (art) 처리회로
US4947255A (en) * 1988-09-19 1990-08-07 The Grass Valley Group, Inc. Video luminance self keyer
US5249039A (en) * 1991-11-18 1993-09-28 The Grass Valley Group, Inc. Chroma key method and apparatus
US5912700A (en) * 1996-01-10 1999-06-15 Fox Sports Productions, Inc. System for enhancing the television presentation of an object at a sporting event
US6535681B2 (en) * 2001-06-19 2003-03-18 Lucent Technologies Inc. Fiber-optic cable routing and bend limiting device and system
US5917553A (en) * 1996-10-22 1999-06-29 Fox Sports Productions Inc. Method and apparatus for enhancing the broadcast of a live event
JPH10150585A (ja) * 1996-11-19 1998-06-02 Sony Corp 画像合成装置
US5953077A (en) * 1997-01-17 1999-09-14 Fox Sports Productions, Inc. System for displaying an object that is not visible to a camera
US6252632B1 (en) 1997-01-17 2001-06-26 Fox Sports Productions, Inc. System for enhancing a video presentation
US6229550B1 (en) 1998-09-04 2001-05-08 Sportvision, Inc. Blending a graphic
US6266100B1 (en) 1998-09-04 2001-07-24 Sportvision, Inc. System for enhancing a video presentation of a live event
US7075556B1 (en) 1999-10-21 2006-07-11 Sportvision, Inc. Telestrator system
US6909438B1 (en) 2000-02-04 2005-06-21 Sportvision, Inc. Video compositor
CN100559889C (zh) * 2006-06-07 2009-11-11 联詠科技股份有限公司 用于一图像播放装置消除杂色的方法及装置
US8456577B2 (en) * 2007-06-29 2013-06-04 Gvbb Holdings S.A.R.L. Method and apparatus for chroma key production
US9215383B2 (en) 2011-08-05 2015-12-15 Sportsvision, Inc. System for enhancing video from a mobile camera
US20150289338A1 (en) 2014-04-08 2015-10-08 Revolution Display, Inc. Automatic chroma key background generator with incident key lighting

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7509871A (nl) * 1975-08-20 1977-02-22 Philips Nv Kleurentelevisie chroma-sleutelsignaalgenerator.
US4021841A (en) * 1975-12-31 1977-05-03 Ralph Weinger Color video synthesizer with improved image control means
US4041527A (en) * 1976-03-15 1977-08-09 The Grass Valley Group, Inc. Video effects generator
US4122490A (en) * 1976-11-09 1978-10-24 Lish Charles A Digital chroma-key circuitry
GB1539199A (en) * 1977-12-02 1979-01-31 British Broadcasting Corp Colour television
JPS6049398B2 (ja) * 1977-12-28 1985-11-01 全国朝日放送株式会社 特殊効果方式
US4206474A (en) * 1978-08-30 1980-06-03 Rca Corporation Low-pass filter with remotely controllable rise time
US4337479A (en) * 1979-09-13 1982-06-29 Matsushita Electric Industrial Co., Ltd. Color resolution compensator

Also Published As

Publication number Publication date
JPS57178490A (en) 1982-11-02
US4386363A (en) 1983-05-31
AU545597B2 (en) 1985-07-18
AU8249182A (en) 1983-04-21
FR2503968B1 (fr) 1984-10-26
DE3213298C2 (de) 1985-02-07
GB2096858A (en) 1982-10-20
JPH0454435B2 (fr) 1992-08-31
CA1169545A (fr) 1984-06-19
FR2503968A1 (fr) 1982-10-15
DE3213298A1 (de) 1982-12-16
GB2096858B (en) 1985-05-30

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: AMPEX SYSTEMS CORPORATION

BV The patent application has lapsed