JPS5738081A - Television signal observing device - Google Patents

Television signal observing device

Info

Publication number
JPS5738081A
JPS5738081A JP11456880A JP11456880A JPS5738081A JP S5738081 A JPS5738081 A JP S5738081A JP 11456880 A JP11456880 A JP 11456880A JP 11456880 A JP11456880 A JP 11456880A JP S5738081 A JPS5738081 A JP S5738081A
Authority
JP
Japan
Prior art keywords
synchronizing signal
circuit
oscilloscope
television signal
horizontal 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
JP11456880A
Other languages
Japanese (ja)
Inventor
Mitsugi Kuboki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11456880A priority Critical patent/JPS5738081A/en
Publication of JPS5738081A publication Critical patent/JPS5738081A/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

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 enable stable observation, by triggering an oscilloscope with every horizontal synchronizing signal only during te selected section and picturing the waveform of a television signal of the section on the scope screen. CONSTITUTION:A television signal is applied to an input terminal 2 as the X axis input of an oscilloscope 3, and it is applied to a luminance separation circuit 6 with the polarity as it is or its inversion to detect the first position reference pulse after the vertical synchronizing signal. A flipk-flot 7 is set with the reat edge of the detection output. The vertical synchronizing signal is detected at a synchronizing separation circuit 8 and the rear edge resets the flip-flop 7. The output of the flip- flop 7 is inputted to a counter circuit 11 via a differentiation circuit 9 and AND gate 10 to start the count of a horizontal synchronizing signal. A count circuit 11 outputs outputs eA-eE. They gates the horizontal synchronizing signal and applies it to an external trigger terminal of the oscilloscope 3.
JP11456880A 1980-08-19 1980-08-19 Television signal observing device Pending JPS5738081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11456880A JPS5738081A (en) 1980-08-19 1980-08-19 Television signal observing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11456880A JPS5738081A (en) 1980-08-19 1980-08-19 Television signal observing device

Publications (1)

Publication Number Publication Date
JPS5738081A true JPS5738081A (en) 1982-03-02

Family

ID=14641071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11456880A Pending JPS5738081A (en) 1980-08-19 1980-08-19 Television signal observing device

Country Status (1)

Country Link
JP (1) JPS5738081A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63254877A (en) * 1987-04-10 1988-10-21 Matsushita Electric Ind Co Ltd Picture display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63254877A (en) * 1987-04-10 1988-10-21 Matsushita Electric Ind Co Ltd Picture display device

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