JPS5534599A - Black marking device - Google Patents
Black marking deviceInfo
- Publication number
- JPS5534599A JPS5534599A JP11101379A JP11101379A JPS5534599A JP S5534599 A JPS5534599 A JP S5534599A JP 11101379 A JP11101379 A JP 11101379A JP 11101379 A JP11101379 A JP 11101379A JP S5534599 A JPS5534599 A JP S5534599A
- Authority
- JP
- Japan
- Prior art keywords
- marking device
- black marking
- black
- marking
- 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.)
- Pending
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)
- Color Television Image Signal Generators (AREA)
- Closed-Circuit Television Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/938,245 US4206474A (en) | 1978-08-30 | 1978-08-30 | Low-pass filter with remotely controllable rise time |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5534599A true JPS5534599A (en) | 1980-03-11 |
Family
ID=25471164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11101379A Pending JPS5534599A (en) | 1978-08-30 | 1979-08-29 | Black marking device |
Country Status (7)
Country | Link |
---|---|
US (1) | US4206474A (ja) |
JP (1) | JPS5534599A (ja) |
CA (1) | CA1137217A (ja) |
DE (1) | DE2935099C2 (ja) |
FR (1) | FR2440671A1 (ja) |
GB (1) | GB2030420B (ja) |
NL (1) | NL7906498A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57103481A (en) * | 1980-12-18 | 1982-06-28 | Nippon Hoso Kyokai <Nhk> | Transmission system for color television signal |
JPS589491A (ja) * | 1981-07-09 | 1983-01-19 | Sony Corp | デジタルクロマキ−装置 |
JPS6152094A (ja) * | 1984-08-16 | 1986-03-14 | クオンテル リミテツド | ビデオ信号編集装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4396939A (en) * | 1980-06-09 | 1983-08-02 | Nippon Electric Co., Ltd. | Chromakey effect apparatus |
US4386363A (en) * | 1981-04-10 | 1983-05-31 | Ampex Corporation | Chroma key switching signal generator |
US4443768A (en) * | 1981-08-28 | 1984-04-17 | The United States Of America As Represented By The United States Department Of Energy | Amplitude- and rise-time-compensated filters |
JPS621308A (ja) * | 1985-06-27 | 1987-01-07 | Asahi Glass Co Ltd | 櫛形フイルタ |
US5051828A (en) * | 1990-04-27 | 1991-09-24 | The Grass Valley Group, Inc. | Keyer with variable shaping |
EP0518465B1 (en) * | 1991-06-14 | 1999-06-16 | The Grass Valley Group, Inc. | Video mixer |
US5249039A (en) * | 1991-11-18 | 1993-09-28 | The Grass Valley Group, Inc. | Chroma key method and apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546338A (en) * | 1947-05-13 | 1951-03-27 | Du Mont Allen B Lab Inc | Circuit for minimizing transients during switching between two video channels |
US3560638A (en) * | 1968-04-22 | 1971-02-02 | Central Dynamics | Chroma deying system utilizing remote controlled chroma keyer |
DE1908897B1 (de) * | 1969-02-22 | 1970-07-02 | Fernseh Gmbh | Steuerschaltung zur Beseitigung von Bildfehlern im Farbfernsehbild |
JPS5141297B1 (ja) * | 1969-11-24 | 1976-11-09 | ||
US3970774A (en) * | 1975-03-31 | 1976-07-20 | Rca Corporation | Electronic signal mixer |
DE2616593C2 (de) * | 1976-04-14 | 1985-07-11 | Robert Bosch Gmbh, 7000 Stuttgart | System zur Umschaltung zwischen zwei Farbfernsehsignalen |
US4183045A (en) * | 1978-08-30 | 1980-01-08 | Rca Corporation | Chroma keying selector system |
-
1978
- 1978-08-30 US US05/938,245 patent/US4206474A/en not_active Expired - Lifetime
-
1979
- 1979-08-20 CA CA000334076A patent/CA1137217A/en not_active Expired
- 1979-08-23 GB GB7929376A patent/GB2030420B/en not_active Expired
- 1979-08-29 JP JP11101379A patent/JPS5534599A/ja active Pending
- 1979-08-29 FR FR7921695A patent/FR2440671A1/fr not_active Withdrawn
- 1979-08-29 NL NL7906498A patent/NL7906498A/nl not_active Application Discontinuation
- 1979-08-30 DE DE2935099A patent/DE2935099C2/de not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57103481A (en) * | 1980-12-18 | 1982-06-28 | Nippon Hoso Kyokai <Nhk> | Transmission system for color television signal |
JPH0472435B2 (ja) * | 1980-12-18 | 1992-11-18 | Japan Broadcasting Corp | |
JPS589491A (ja) * | 1981-07-09 | 1983-01-19 | Sony Corp | デジタルクロマキ−装置 |
JPH0347630B2 (ja) * | 1981-07-09 | 1991-07-19 | Sony Corp | |
JPS6152094A (ja) * | 1984-08-16 | 1986-03-14 | クオンテル リミテツド | ビデオ信号編集装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2440671A1 (fr) | 1980-05-30 |
US4206474A (en) | 1980-06-03 |
GB2030420A (en) | 1980-04-02 |
GB2030420B (en) | 1982-12-22 |
DE2935099A1 (de) | 1980-03-13 |
NL7906498A (nl) | 1980-03-04 |
CA1137217A (en) | 1982-12-07 |
DE2935099C2 (de) | 1982-05-19 |
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