JPS647895A - Color bar chroma signal generating circuit - Google Patents

Color bar chroma signal generating circuit

Info

Publication number
JPS647895A
JPS647895A JP16286087A JP16286087A JPS647895A JP S647895 A JPS647895 A JP S647895A JP 16286087 A JP16286087 A JP 16286087A JP 16286087 A JP16286087 A JP 16286087A JP S647895 A JPS647895 A JP S647895A
Authority
JP
Japan
Prior art keywords
waveform
color bar
chrominance
chroma 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.)
Granted
Application number
JP16286087A
Other languages
Japanese (ja)
Other versions
JPH0456515B2 (en
Inventor
Masatoshi Otake
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP16286087A priority Critical patent/JPS647895A/en
Publication of JPS647895A publication Critical patent/JPS647895A/en
Publication of JPH0456515B2 publication Critical patent/JPH0456515B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To improve the accuracy of the waveform and the stability and the performance of the waveform of an obtained color bar chroma signal and to simplify a circuit constitution by previously storing respective chrominance signal waveforms constituting the color bar chroma signal in a chrominance signal waveform memory as respective digital wave height value data. CONSTITUTION:The respective signal waveforms 22Y-22B of respective chrominance signals 3 constituting the color bar chroma signal 5 are stored in the chrominance signal waveform memory 21 with phase difference phi information to chrominance sub-carrier waveform 23 included. An analog circuit element for removing respective filters is constituted of only one amplitude modulator 30 to remarkably reduce the using frequency of the analog circuit element, so that the accuracy of the respective phase differences phi of the respective chrominance signals 3 of the obtained color bar chroma signal 5 is remarkably improved. The information of this phase difference phiis stored in a digital value in the chrominance signal waveform memory 21 as the respective wave height value data. Thereby, the fluctuation of the waveform of the color bar chroma signal 5 resulting from long period use can be suppressed to a minimum and the stability and the performance of the waveform can be remarkably improved.
JP16286087A 1987-06-30 1987-06-30 Color bar chroma signal generating circuit Granted JPS647895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16286087A JPS647895A (en) 1987-06-30 1987-06-30 Color bar chroma signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16286087A JPS647895A (en) 1987-06-30 1987-06-30 Color bar chroma signal generating circuit

Publications (2)

Publication Number Publication Date
JPS647895A true JPS647895A (en) 1989-01-11
JPH0456515B2 JPH0456515B2 (en) 1992-09-08

Family

ID=15762627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16286087A Granted JPS647895A (en) 1987-06-30 1987-06-30 Color bar chroma signal generating circuit

Country Status (1)

Country Link
JP (1) JPS647895A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116524A (en) * 1983-11-28 1985-06-24 Mitsubishi Motors Corp Driving-coupling device for four-wheel driving
US8743211B2 (en) 2005-08-31 2014-06-03 Gvbb Holdings S.A.R.L. Efficient test generator for video test patterns

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116524A (en) * 1983-11-28 1985-06-24 Mitsubishi Motors Corp Driving-coupling device for four-wheel driving
US8743211B2 (en) 2005-08-31 2014-06-03 Gvbb Holdings S.A.R.L. Efficient test generator for video test patterns

Also Published As

Publication number Publication date
JPH0456515B2 (en) 1992-09-08

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