JPS63175203A - Analyzing device for analog signal - Google Patents

Abstract

PURPOSE:To analyze the analog signals with high efficiency by automatically changing the analog signals delivered from a D/A converting circuit into pictures and recording these pictures on a magnetic tape. CONSTITUTION:An A/D converting circuit 4 converts the analog signals supplied through an input terminal 1 into the digital signals in the sampling signal period produced from a read sampling signal generating circuit 7. A digital picture memory part 5 writes successively those digital signals to array and store them. Then a standard TV synchronizing clock signal generating circuit 8 produces a standard TV synchronizing clock signal with a recording start signal supplied from an input terminal 3. A D/A converting circuit 6 converts the digital signals read successively out of a digital picture memory part 5 in a standard TV synchronizing clock signal period into the analog signals in said synchronizing clock signal period. A standard VTR device 10 supplies and records these analog signals on a magnetic tape. Thus the analog signals are quickly analyzed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an analog signal analysis device that records analog signals generated within a certain period of time and analyzes the signal waveform.

[Conventional technology]

Conventionally, as a method of recording analog signals generated within a certain period of time and analyzing the signal waveforms, the analog signal waveform display of an afterimage CRT electron tube such as a commercially available memory oscilloscope is photographed and recorded. The analysis was carried out using photographs.

[Problem that the invention seeks to solve]

Therefore, there are problems in that it takes a lot of time and effort to analyze many analog signals.

The present invention has been made in view of these points, and its purpose is to provide an analog signal analysis device that can quickly analyze many analog signals.

[Means for solving problems]

In order to achieve such an object, the present invention is an analog signal analyzer that records analog signals generated within a certain period of time and analyzes the signal waveform. an analog/digital conversion circuit that converts analog signals output from the analog/digital conversion circuit into digital signals; a digital image memory section that sequentially writes and arranges and stores the digital signals output from the analog/digital conversion circuit; and a recording start signal input from the outside. a standard television synchronization clock signal generation circuit for generating a standard television synchronization clock signal; and a standard television synchronization clock signal generation circuit that converts and outputs digital signals sequentially read out from a digital image memory section according to the standard television synchronization clock signal period into analog signals according to the standard television synchronization clock signal period. The system is equipped with a digital-to-analog conversion circuit for converting the digital-to-analog conversion circuit, and a standard VTR device for recording the analog signal outputted from the digital-to-analog conversion circuit on a magnetic tape.

[Effect]

In the present invention, analog signals are automatically imaged and recorded.

〔Example〕

An embodiment of an analog signal analysis device according to the present invention is shown in the figure. In the figure, ■ is an analog signal input terminal, 2 is a reading start signal input terminal, 3 is a recording start signal input terminal, 4 is an analog-to-digital conversion circuit, 5 is a digital image memory section, and 6 is a digital-to-analog conversion circuit. 7 is a read sampling signal generation circuit, 8 is a standard television synchronization clock signal generation circuit, 9 is a standard monitor television, and 10 is a standard VTR device.

Next, the operation will be explained. The analog/digital conversion circuit 4 converts the analog signal input from the input terminal 1 into a digital signal according to the sampling signal period generated from the read sampling signal generation circuit 7. The digital image memory section 5 sequentially writes, arranges, and stores the digital signals.

Next, by inputting a recording start signal from the input terminal 3, the standard television synchronization clock signal generation circuit generates a standard television synchronization clock signal.

The digital-to-analog conversion circuit 6 converts and outputs the digital signals sequentially read out from the digital image memory section 5 according to the standard television synchronization clock signal period into analog signals according to the same standard television synchronization clock signal period.

The standard VTR device 10 receives the analog signal and records it on a magnetic tape.

By playing back the magnetic tape obtained by the above method with a standard VTR device 10 and displaying it on a standard monitor television 9, changes in the analog signal can be analyzed from the contrast change pattern of the image.

〔Effect of the invention〕

As explained above, the present invention instantly and automatically converts and records analog signals into images, thereby making it possible to analyze changes in analog signals from contrast change patterns in images. (There are effects that can be analyzed.

[Brief explanation of the drawing]

The figure is a system diagram showing one embodiment of an analog analysis device according to the present invention. 1.2.3...Input terminal, 4...Analog-to-digital conversion circuit, 5...Digital image memory section, 6...
Digital-to-analog conversion circuit, 7... Read sampling signal generation circuit, 8... Standard TV synchronization clock signal generation circuit, 9... Standard monitor television, 10... Standard VTR device.

Claims (1)

[Claims] In an analog signal analyzer that records analog signals generated within a certain period of time and analyzes the signal waveform, analog/digital converts the input analog signal into a digital signal based on the sampling signal period generated from the read sampling signal generation circuit. A conversion circuit, a digital image memory section that sequentially writes, arranges, and stores the digital signals output from the analog-to-digital conversion circuit, and a standard TV synchronization system that generates a standard TV synchronization clock signal by inputting a recording start signal from the outside. a clock signal generation circuit; a digital-to-analog conversion circuit that converts and outputs digital signals sequentially read out from the digital image memory unit according to the standard television synchronization clock signal period into analog signals according to the standard television synchronization clock signal period; A standard VTR that records analog signals output from an analog converter circuit onto magnetic tape.
An analog signal analysis device comprising: