GB2168564B - Improvements in or relating to keying of video signals - Google Patents
Improvements in or relating to keying of video signalsInfo
- Publication number
- GB2168564B GB2168564B GB08523128A GB8523128A GB2168564B GB 2168564 B GB2168564 B GB 2168564B GB 08523128 A GB08523128 A GB 08523128A GB 8523128 A GB8523128 A GB 8523128A GB 2168564 B GB2168564 B GB 2168564B
- Authority
- GB
- United Kingdom
- Prior art keywords
- keying
- relating
- video signals
- video
- signals
- 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
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB848423654A GB8423654D0 (en) | 1984-09-19 | 1984-09-19 | Colour separation overlay |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8523128D0 GB8523128D0 (en) | 1985-10-23 |
GB2168564A GB2168564A (en) | 1986-06-18 |
GB2168564B true GB2168564B (en) | 1988-03-16 |
Family
ID=10566934
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB848423654A Pending GB8423654D0 (en) | 1984-09-19 | 1984-09-19 | Colour separation overlay |
GB08523128A Expired GB2168564B (en) | 1984-09-19 | 1985-09-19 | Improvements in or relating to keying of video signals |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB848423654A Pending GB8423654D0 (en) | 1984-09-19 | 1984-09-19 | Colour separation overlay |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB8423654D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU599155B2 (en) * | 1986-10-24 | 1990-07-12 | Grass Valley Group, Inc., The | Method and apparatus for processing a video signal in three dimensions |
US5202762A (en) * | 1991-09-10 | 1993-04-13 | Ultimatte Corporation | Method and apparatus for applying correction to a signal used to modulate a background video signal to be combined with a foreground video signal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3143653A1 (en) * | 1981-11-04 | 1983-05-11 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR MIXING TWO COLOR TV SIGNALS |
-
1984
- 1984-09-19 GB GB848423654A patent/GB8423654D0/en active Pending
-
1985
- 1985-09-19 GB GB08523128A patent/GB2168564B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB8423654D0 (en) | 1984-10-24 |
GB8523128D0 (en) | 1985-10-23 |
GB2168564A (en) | 1986-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |