JPS5454523A - Superimposing system for letter and graphic signal - Google Patents

Superimposing system for letter and graphic signal

Info

Publication number
JPS5454523A
JPS5454523A JP12090177A JP12090177A JPS5454523A JP S5454523 A JPS5454523 A JP S5454523A JP 12090177 A JP12090177 A JP 12090177A JP 12090177 A JP12090177 A JP 12090177A JP S5454523 A JPS5454523 A JP S5454523A
Authority
JP
Japan
Prior art keywords
signal
letter
superimposing
graphic
color
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
Application number
JP12090177A
Other languages
Japanese (ja)
Other versions
JPS5755355B2 (en
Inventor
Toshiyuki Kato
Kunikatsu Kumakura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP12090177A priority Critical patent/JPS5454523A/en
Publication of JPS5454523A publication Critical patent/JPS5454523A/en
Publication of JPS5755355B2 publication Critical patent/JPS5755355B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To enable to reproduce the colored letters and graphs on the super screen as the letters and graphs as natural state, by producing the key signal required to pick up the part corresponding to the letter or graphic signal superimposed.
CONSTITUTION: The insertor consists of the key signal generating section 12 producing the key signal from the output signals R, G, B of the color pick up unit 11 and the insertor section 13, the generating section 12 produces the key signal required to pick up letter and graphic signal superimposed among the basic video signal Vi, and the insertor section 13 picks up the part corresponding to the superimposing signal among the signals Vi with the video gate circuit by taking the key signal as the gate signal and the mixing circuit inserts the superimposing signal into the video signal. Further, the superimposing letter and graphic signals are reproduced on the superimposing screen as the letter and graph keeping the luminance, hue and chroma saturation as original color itself for the colored letter (a) and graph (b) by using the color video signal satisfying the color performance
COPYRIGHT: (C)1979,JPO&Japio
JP12090177A 1977-10-11 1977-10-11 Superimposing system for letter and graphic signal Granted JPS5454523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12090177A JPS5454523A (en) 1977-10-11 1977-10-11 Superimposing system for letter and graphic signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12090177A JPS5454523A (en) 1977-10-11 1977-10-11 Superimposing system for letter and graphic signal

Publications (2)

Publication Number Publication Date
JPS5454523A true JPS5454523A (en) 1979-04-28
JPS5755355B2 JPS5755355B2 (en) 1982-11-24

Family

ID=14797794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12090177A Granted JPS5454523A (en) 1977-10-11 1977-10-11 Superimposing system for letter and graphic signal

Country Status (1)

Country Link
JP (1) JPS5454523A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562792A (en) * 1979-06-20 1981-01-13 Nec Corp Generator for shadow super signal for color
JPS5983488A (en) * 1982-11-05 1984-05-14 Sony Corp Chroma key device
JPS6210995A (en) * 1985-07-08 1987-01-19 Nec Corp Superimposition device
JPH02168788A (en) * 1989-10-30 1990-06-28 Canon Inc Color image processor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562792A (en) * 1979-06-20 1981-01-13 Nec Corp Generator for shadow super signal for color
JPS5983488A (en) * 1982-11-05 1984-05-14 Sony Corp Chroma key device
JPH0524717B2 (en) * 1982-11-05 1993-04-08 Sony Corp
JPS6210995A (en) * 1985-07-08 1987-01-19 Nec Corp Superimposition device
JPH02168788A (en) * 1989-10-30 1990-06-28 Canon Inc Color image processor
JPH0479196B2 (en) * 1989-10-30 1992-12-15 Canon Kk

Also Published As

Publication number Publication date
JPS5755355B2 (en) 1982-11-24

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