JPS5575655A - Waveform analyzer - Google Patents

Waveform analyzer

Info

Publication number
JPS5575655A
JPS5575655A JP14928678A JP14928678A JPS5575655A JP S5575655 A JPS5575655 A JP S5575655A JP 14928678 A JP14928678 A JP 14928678A JP 14928678 A JP14928678 A JP 14928678A JP S5575655 A JPS5575655 A JP S5575655A
Authority
JP
Japan
Prior art keywords
signal
waveform
point
level
measuring
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
JP14928678A
Other languages
Japanese (ja)
Inventor
Keiji Imai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14928678A priority Critical patent/JPS5575655A/en
Publication of JPS5575655A publication Critical patent/JPS5575655A/en
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE: To increase the accuracy of analysis, by simplifying the circuit and increasing the accuacy of peak hold, through the use of the specific part of the waveform such as the horizontal synchronizing level of video signal waveform and specific luminance level as the gate signal.
CONSTITUTION: In measuring the level at point A of the video signal waveform 16, the gate signal 26 designating the point A apart from the head point C of the synchronizing signal on the waveform 16 by t±Δt is given to the peak holds 3, 4 of positive and negative direction, to obtain the peak hold signal 29. The signal 29 is in A/D conversion 6 and latched 7 with the timing signal 28 obtained from the signal 26. On the other hand, in measuring the time axis of the point B on the waveform 16, the threshold level 30 greater by VT than the reference value is given, the edge of leading and trailing of the signal 31 obtained with the comparison 11 of the level 30 and the waveform 16 is detected 12, the phase difference between the trigger signal 23 corresponding to the point C and the edge is sampled 13, the pulse number N is conuted 14, to obtain the time axis TX.
COPYRIGHT: (C)1980,JPO&Japio
JP14928678A 1978-12-01 1978-12-01 Waveform analyzer Pending JPS5575655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14928678A JPS5575655A (en) 1978-12-01 1978-12-01 Waveform analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14928678A JPS5575655A (en) 1978-12-01 1978-12-01 Waveform analyzer

Publications (1)

Publication Number Publication Date
JPS5575655A true JPS5575655A (en) 1980-06-07

Family

ID=15471867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14928678A Pending JPS5575655A (en) 1978-12-01 1978-12-01 Waveform analyzer

Country Status (1)

Country Link
JP (1) JPS5575655A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049268A (en) * 1983-07-26 1985-03-18 サンドストランド・コーポレイション Signal generator displaying direct current component of alternating current waveform
JPS6148378U (en) * 1984-08-31 1986-04-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049268A (en) * 1983-07-26 1985-03-18 サンドストランド・コーポレイション Signal generator displaying direct current component of alternating current waveform
JPS6148378U (en) * 1984-08-31 1986-04-01

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