JPS645190A - Video signal composing device - Google Patents

Video signal composing device

Info

Publication number
JPS645190A
JPS645190A JP16034187A JP16034187A JPS645190A JP S645190 A JPS645190 A JP S645190A JP 16034187 A JP16034187 A JP 16034187A JP 16034187 A JP16034187 A JP 16034187A JP S645190 A JPS645190 A JP S645190A
Authority
JP
Japan
Prior art keywords
image
color
subordinate
video signal
signal
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
JP16034187A
Other languages
Japanese (ja)
Inventor
Yoshiki Mizutani
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16034187A priority Critical patent/JPS645190A/en
Publication of JPS645190A publication Critical patent/JPS645190A/en
Pending legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To obtain a natural composite image by equalizing the color signal level of a main image to the color signal level of a subordinate image. CONSTITUTION:A color burst signal contained in the composite video signal of the main image and a color burst signal contained in the composite video signal constituting the subordinate image are fetched from 1st and 2nd burst gate circuit 36 and 37 and applied to a comparator 38 respectively. Here, the amplitude levels of the two kinds of the color burst signals are compared with each other and the comparison output is sent out to a VCA circuit 39. Then the VCA circuit 39 varies the gain according to the output of the comparator 38 and eqalizes the amplitude of the color burst signal of the subordinate image to the amplitude of the color burst signal of the main image. Consequently, there is no difference in color saturation between the main image and subordinate images of a composite image, which becomes natural.
JP16034187A 1987-06-26 1987-06-26 Video signal composing device Pending JPS645190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16034187A JPS645190A (en) 1987-06-26 1987-06-26 Video signal composing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16034187A JPS645190A (en) 1987-06-26 1987-06-26 Video signal composing device

Publications (1)

Publication Number Publication Date
JPS645190A true JPS645190A (en) 1989-01-10

Family

ID=15712889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16034187A Pending JPS645190A (en) 1987-06-26 1987-06-26 Video signal composing device

Country Status (1)

Country Link
JP (1) JPS645190A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287885A (en) * 1988-09-26 1990-03-28 Nec Corp Video signal circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287885A (en) * 1988-09-26 1990-03-28 Nec Corp Video signal circuit

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