JPS57202193A - Color bar generator - Google Patents

Color bar generator

Info

Publication number
JPS57202193A
JPS57202193A JP8698881A JP8698881A JPS57202193A JP S57202193 A JPS57202193 A JP S57202193A JP 8698881 A JP8698881 A JP 8698881A JP 8698881 A JP8698881 A JP 8698881A JP S57202193 A JPS57202193 A JP S57202193A
Authority
JP
Japan
Prior art keywords
signal
circuit
frequency
given
vertical synchronizing
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
JP8698881A
Other languages
Japanese (ja)
Inventor
Michihiro Yoshida
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.)
ENU TEII EE SHII KK
N T EE C KK
Original Assignee
ENU TEII EE SHII KK
N T EE C KK
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 ENU TEII EE SHII KK, N T EE C KK filed Critical ENU TEII EE SHII KK
Priority to JP8698881A priority Critical patent/JPS57202193A/en
Publication of JPS57202193A publication Critical patent/JPS57202193A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
    • H04N17/045—Self-contained testing apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To obtain a PAL system device advantageous practically, with a simple circuit constitution and remarkably reduced power consumption, by outputting a signal offset by one horizontal scanning frequency for one even or odd number of field to a chrominance subcarrier wave. CONSTITUTION:The 1st reference signal obtained from an oscillator 1 is frequency-divided at a 1/24 frequency divider 2, a horizontal synchronizing signal H is produced and a vertical synchronizing signal V is produced with a 1/312 frequency-divider 3. Based on this vertical synchronizing signal, a chroma gate circuit 5 is opened only at the scanning of an even or odd number of fields and the 2nd reference signal from an oscillator 6 is given to a video signal synthesis circuit 7. On the other hand, horizontal and vertical synchronizing signals (H, V) obtained from the frequency dividers 2 and 3 are given to a synthesis circuit 8, where they are synthesized with a pattern signal selected at a pattern selection circuit 9 and the result is given to the video signal synchesis circuit 7. The output is synthesized with the output of the chroma gate circuit 5 and the video signal is obtained.
JP8698881A 1981-06-08 1981-06-08 Color bar generator Pending JPS57202193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8698881A JPS57202193A (en) 1981-06-08 1981-06-08 Color bar generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8698881A JPS57202193A (en) 1981-06-08 1981-06-08 Color bar generator

Publications (1)

Publication Number Publication Date
JPS57202193A true JPS57202193A (en) 1982-12-10

Family

ID=13902239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8698881A Pending JPS57202193A (en) 1981-06-08 1981-06-08 Color bar generator

Country Status (1)

Country Link
JP (1) JPS57202193A (en)

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