JPS562792A - Generator for shadow super signal for color - Google Patents

Generator for shadow super signal for color

Info

Publication number
JPS562792A
JPS562792A JP7781679A JP7781679A JPS562792A JP S562792 A JPS562792 A JP S562792A JP 7781679 A JP7781679 A JP 7781679A JP 7781679 A JP7781679 A JP 7781679A JP S562792 A JPS562792 A JP S562792A
Authority
JP
Japan
Prior art keywords
signal
color
circuit
super
shadow
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
JP7781679A
Other languages
Japanese (ja)
Other versions
JPS643115B2 (en
Inventor
Isamu Kitahama
Fumiyoshi Yano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7781679A priority Critical patent/JPS562792A/en
Publication of JPS562792A publication Critical patent/JPS562792A/en
Publication of JPS643115B2 publication Critical patent/JPS643115B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To make a stable operation possible even if the color super signal where the luminance signal is not constant is received, by generating a keying signal by the color super signal and by providing a means which delays the super signal. CONSTITUTION:The color super signal from terminal 1' is separated into keying signal S'k and insert signal Sin by separating circuit 15. Signal S'k is processed by delay circuits 5, 6, 8 and 9 and nonmixture adding circuits 7 and 10 and is output as a widened keying signal. Meanwhile, signal Sin is supplied to switch circuit 18 through delay circuit 16 having the same delay quantity as circuits 5 and 6 and delay circuit 17 having the same delay quantity as circuits 8 and 9. The super color signal indicating an arbitrary color is supplied from super color signal generator 13 to circuit 18, and one of signals is selected and supplied to mixing circuit 12. The shadow signal is supplied from shadow color signal generating circuit 14 to circuit 12, and super color signal Ss with shadow is obtained from circuit 12.
JP7781679A 1979-06-20 1979-06-20 Generator for shadow super signal for color Granted JPS562792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7781679A JPS562792A (en) 1979-06-20 1979-06-20 Generator for shadow super signal for color

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7781679A JPS562792A (en) 1979-06-20 1979-06-20 Generator for shadow super signal for color

Publications (2)

Publication Number Publication Date
JPS562792A true JPS562792A (en) 1981-01-13
JPS643115B2 JPS643115B2 (en) 1989-01-19

Family

ID=13644544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7781679A Granted JPS562792A (en) 1979-06-20 1979-06-20 Generator for shadow super signal for color

Country Status (1)

Country Link
JP (1) JPS562792A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02198290A (en) * 1989-01-26 1990-08-06 Nec Corp Color shadow superimposed signal generator
JPH03297294A (en) * 1990-04-16 1991-12-27 Matsushita Electric Ind Co Ltd Key signal generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454523A (en) * 1977-10-11 1979-04-28 Nippon Hoso Kyokai <Nhk> Superimposing system for letter and graphic signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454523A (en) * 1977-10-11 1979-04-28 Nippon Hoso Kyokai <Nhk> Superimposing system for letter and graphic signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02198290A (en) * 1989-01-26 1990-08-06 Nec Corp Color shadow superimposed signal generator
JPH03297294A (en) * 1990-04-16 1991-12-27 Matsushita Electric Ind Co Ltd Key signal generator

Also Published As

Publication number Publication date
JPS643115B2 (en) 1989-01-19

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