JPS5568784A - Color video signal compounding device - Google Patents

Color video signal compounding device

Info

Publication number
JPS5568784A
JPS5568784A JP14205578A JP14205578A JPS5568784A JP S5568784 A JPS5568784 A JP S5568784A JP 14205578 A JP14205578 A JP 14205578A JP 14205578 A JP14205578 A JP 14205578A JP S5568784 A JPS5568784 A JP S5568784A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
signal
circuit
vtr1
key
switch
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
Application number
JP14205578A
Inventor
Masao Ueda
Original Assignee
Shin Meiwa Ind Co Ltd
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

Links

Abstract

PURPOSE: To secure a high-contrast contour in case the output of the pickup apparatus are compounded by using the chroma-key signal and the shiroma-key (a kind of chroma-key, which background is white) signal for the switch signals of the switch circuit.
CONSTITUTION: The composite signal of the shiroma-kdy signal (d) formed by transmitting embedded video signal (a) sent from VTR1 through 1st low band pass filter 2 with processing at contour emphasis circuit 3 and chroma-key signal (g) obtained by processing the chrominance signal isolated through chrominance signal isolator circuit 5 through 2nd low band pass filter 7 is used for the switch signal used to switch circuit 13 of the device which compounds the NTSC-system color video signals. At the same time, signal (a) is applied to switch circuit 13 via 2nd delay circuit 11, and the picture image recorded on VTR1 is compounded with the signal picked up through pickup apparatus 12 within circuit 13 to be then displayed at picture receiver 14. In this constitution, the output signal of apparatus 12 is eliminated in case the signal is not blue among signals (a) of VTR1, and the output of VTR1 is applied to picture receiver 14 to secure a higher-contrast contour. At the same time, the noise component is eliminated through the filter circuit, thus enhancing the quality of the compound picture.
COPYRIGHT: (C)1980,JPO&Japio
JP14205578A 1978-11-16 1978-11-16 Color video signal compounding device Pending JPS5568784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14205578A JPS5568784A (en) 1978-11-16 1978-11-16 Color video signal compounding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14205578A JPS5568784A (en) 1978-11-16 1978-11-16 Color video signal compounding device

Publications (1)

Publication Number Publication Date
JPS5568784A true true JPS5568784A (en) 1980-05-23

Family

ID=15306355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14205578A Pending JPS5568784A (en) 1978-11-16 1978-11-16 Color video signal compounding device

Country Status (1)

Country Link
JP (1) JPS5568784A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689666A (en) * 1985-01-08 1987-08-25 Fuji Photo Film Co., Ltd. Method for eliminating noise in regions of a color image exhibiting a specific color
US4872056A (en) * 1987-02-05 1989-10-03 Video Graphic Styling, Inc. Method for displaying selected hairstyles in video form

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689666A (en) * 1985-01-08 1987-08-25 Fuji Photo Film Co., Ltd. Method for eliminating noise in regions of a color image exhibiting a specific color
US4872056A (en) * 1987-02-05 1989-10-03 Video Graphic Styling, Inc. Method for displaying selected hairstyles in video form

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