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JPS647889A - Device for synthesizing secam signal and character signal - Google Patents

Device for synthesizing secam signal and character signal

Info

Publication number
JPS647889A
JPS647889A JP16344687A JP16344687A JPS647889A JP S647889 A JPS647889 A JP S647889A JP 16344687 A JP16344687 A JP 16344687A JP 16344687 A JP16344687 A JP 16344687A JP S647889 A JPS647889 A JP S647889A
Authority
JP
Japan
Prior art keywords
signal
character
synthesizing
video signal
carrier chrominance
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
JP16344687A
Other languages
Japanese (ja)
Inventor
Hideto Suzuki
Hideki Arai
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP16344687A priority Critical patent/JPS647889A/en
Publication of JPS647889A publication Critical patent/JPS647889A/en
Pending legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To suppress the generation of a picture noise by removing a high frequency component, synthesizing a character signal with a carrier chrominance signal in the video signal of a SECAM system, switching this synthesizing signal and the color video signal of the SECAM system and displaying a character picture on a tube face. CONSTITUTION:The generating source 4 of the video signal of the SECAM system, a character generating source 5 for generating the character signal and a character gate signal and a low pass filter 9 for removing the high frequency component of the character signal are provided. Further, a circuit 13 for extracting the carrier chrominance signal from the video signal and synthesizing the character signal outputted from the low pass filter 9 with the carrier chrominance signal and a circuit 12 for switching whether the video signal is outputted or the synthesizing signal from the synthesizing circuit 13 is outputted according to the character gate signal are provided. The character signal C from which the high frequency component is removed by the low pass filter 9 is synthesized with the carrier chrominance signal of the video signal V of the SECAM system. Thereby, a clear tube face display character having no ugly color in an edge part is obtained.
JP16344687A 1987-06-30 1987-06-30 Device for synthesizing secam signal and character signal Pending JPS647889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16344687A JPS647889A (en) 1987-06-30 1987-06-30 Device for synthesizing secam signal and character signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16344687A JPS647889A (en) 1987-06-30 1987-06-30 Device for synthesizing secam signal and character signal

Publications (1)

Publication Number Publication Date
JPS647889A true JPS647889A (en) 1989-01-11

Family

ID=15774035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16344687A Pending JPS647889A (en) 1987-06-30 1987-06-30 Device for synthesizing secam signal and character signal

Country Status (1)

Country Link
JP (1) JPS647889A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963828A (en) * 1988-03-04 1990-10-16 Hitachi, Ltd. Picture quality testing method and apparatus for color cathode-ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4963828A (en) * 1988-03-04 1990-10-16 Hitachi, Ltd. Picture quality testing method and apparatus for color cathode-ray tube

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