JPS5591278A - Color submodulator - Google Patents

Color submodulator

Info

Publication number
JPS5591278A
JPS5591278A JP16495378A JP16495378A JPS5591278A JP S5591278 A JPS5591278 A JP S5591278A JP 16495378 A JP16495378 A JP 16495378A JP 16495378 A JP16495378 A JP 16495378A JP S5591278 A JPS5591278 A JP S5591278A
Authority
JP
Japan
Prior art keywords
output
color
circuit
signal
featuring
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
JP16495378A
Other languages
Japanese (ja)
Inventor
Jiyouji Yoshioka
Takahiro Yamazaki
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
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 Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP16495378A priority Critical patent/JPS5591278A/en
Publication of JPS5591278A publication Critical patent/JPS5591278A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To secure a high-contrast display on the screen for the information of the characters, patterns and others by giving addition to the signals of plural different luminance levels and the mixing the output of the additon with the output of the 1st mixer circuit.
CONSTITUTION: Oscillation circuit 1 delivers the continuous signals featuring the frequency of an integer-fold as much as the chrominance subcarrier, generates 2 the symmetrical square wave featuring the phase corresponding to the carrier chrominance signal and selects one of the waves according to the color display signal. Then the product is obtained through gate circuit 4 between the symmetrical square wave signal featuring the phase corresponding to that of the color burst signal and the burst flag pulse, and mixture 5 is given to the output between circuits 3 and 4. On the other hand, adder circuit 7 receives the weighting properly in accordance with the display color of the luminous point designated with the color display signal, and then addition 7 is given to the signals of plural different luminance levels. And the addition output is mixed with the output of circuit 5. Thus the information of the characters, patterns and others can be displayed on the screen in a high contrast.
COPYRIGHT: (C)1980,JPO&Japio
JP16495378A 1978-12-28 1978-12-28 Color submodulator Pending JPS5591278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16495378A JPS5591278A (en) 1978-12-28 1978-12-28 Color submodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16495378A JPS5591278A (en) 1978-12-28 1978-12-28 Color submodulator

Publications (1)

Publication Number Publication Date
JPS5591278A true JPS5591278A (en) 1980-07-10

Family

ID=15802993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16495378A Pending JPS5591278A (en) 1978-12-28 1978-12-28 Color submodulator

Country Status (1)

Country Link
JP (1) JPS5591278A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185405A (en) * 1984-03-02 1985-09-20 Rohm Co Ltd Balanced modulation circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185405A (en) * 1984-03-02 1985-09-20 Rohm Co Ltd Balanced modulation circuit
JPH0351359B2 (en) * 1984-03-02 1991-08-06 Rohm Kk

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