JPS5556771A - Soft border wipe effect generator - Google Patents
Soft border wipe effect generatorInfo
- Publication number
- JPS5556771A JPS5556771A JP13077278A JP13077278A JPS5556771A JP S5556771 A JPS5556771 A JP S5556771A JP 13077278 A JP13077278 A JP 13077278A JP 13077278 A JP13077278 A JP 13077278A JP S5556771 A JPS5556771 A JP S5556771A
- Authority
- JP
- Japan
- Prior art keywords
- border
- circuit
- signal
- color
- gate
- 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
Links
Landscapes
- Studio Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To avoid the color change or the flicker at the border line area which is caused by the partial phase variation of the color subcarrier by using the differentiating circuit to obtain the border waveform and then the blurred border wipe for the border line.
CONSTITUTION: Two video signals v1 and v2 are compounded according to gate signal c4 sent from slice circuit 4. Composite video signal v3 is then compounded with border signal v6 containing the color subcarrier expressing the desired color at linear gate circuit 5. Soft wipe waveform generator circuit 7 produces soft wipe waveform v7, and gate signal c9 to gate the border signal is obtained via differentiating circuit 8 and rectifier circuit 9 to be applied to circuit 5. Output video signal v5, in which the border between signal v6 and v1/v2 does not change suddenly, is thus obtained, and as a result no color disturbance is caused on the screen at the border area.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13077278A JPS5556771A (en) | 1978-10-24 | 1978-10-24 | Soft border wipe effect generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13077278A JPS5556771A (en) | 1978-10-24 | 1978-10-24 | Soft border wipe effect generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5556771A true JPS5556771A (en) | 1980-04-25 |
JPS6320072B2 JPS6320072B2 (en) | 1988-04-26 |
Family
ID=15042290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13077278A Granted JPS5556771A (en) | 1978-10-24 | 1978-10-24 | Soft border wipe effect generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556771A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4396939A (en) * | 1980-06-09 | 1983-08-02 | Nippon Electric Co., Ltd. | Chromakey effect apparatus |
JPS5983488A (en) * | 1982-11-05 | 1984-05-14 | Sony Corp | Chroma key device |
JPS60138082U (en) * | 1984-02-25 | 1985-09-12 | 株式会社 小金井製作所 | solenoid valve |
EP0215107A1 (en) * | 1985-03-15 | 1987-03-25 | Ampex | Apparatus and method for producing a variety of video wipe borders. |
JPS62247682A (en) * | 1985-07-12 | 1987-10-28 | ザ・グラス・バレー・グループ・インコーポレイテッド | Composite video signal generator |
JPS6336675A (en) * | 1986-07-31 | 1988-02-17 | Nippon Hoso Kyokai <Nhk> | Video image synthesizer |
JPH02226973A (en) * | 1989-02-28 | 1990-09-10 | Canon Inc | Video signal processing circuit |
JPH02228886A (en) * | 1989-03-02 | 1990-09-11 | Canon Inc | Video signal processing circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394033U (en) * | 1976-12-28 | 1978-08-01 |
-
1978
- 1978-10-24 JP JP13077278A patent/JPS5556771A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394033U (en) * | 1976-12-28 | 1978-08-01 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4396939A (en) * | 1980-06-09 | 1983-08-02 | Nippon Electric Co., Ltd. | Chromakey effect apparatus |
JPS5983488A (en) * | 1982-11-05 | 1984-05-14 | Sony Corp | Chroma key device |
JPH0524717B2 (en) * | 1982-11-05 | 1993-04-08 | Sony Corp | |
JPS60138082U (en) * | 1984-02-25 | 1985-09-12 | 株式会社 小金井製作所 | solenoid valve |
EP0215107A1 (en) * | 1985-03-15 | 1987-03-25 | Ampex | Apparatus and method for producing a variety of video wipe borders. |
JPS62247682A (en) * | 1985-07-12 | 1987-10-28 | ザ・グラス・バレー・グループ・インコーポレイテッド | Composite video signal generator |
JPH0423992B2 (en) * | 1985-07-12 | 1992-04-23 | Grass Valley Group | |
JPS6336675A (en) * | 1986-07-31 | 1988-02-17 | Nippon Hoso Kyokai <Nhk> | Video image synthesizer |
JPH02226973A (en) * | 1989-02-28 | 1990-09-10 | Canon Inc | Video signal processing circuit |
JPH02228886A (en) * | 1989-03-02 | 1990-09-11 | Canon Inc | Video signal processing circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6320072B2 (en) | 1988-04-26 |
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