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Distortion signal generating device for video signal analyzer calibration

A signal generating device and the technology of the generating device, which are applied in the direction of television, image communication, electrical components, etc., can solve the problems that the video standard signal cannot fully calibrate the video signal analyzer and the signal generating device without distortion.

Inactive Publication Date: 2017-05-10
GUANGZHOU CEPREI CALIBRATION & TESTING CENT SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing TV video signal generators can only output part of the standard video signal, but a single video standard signal cannot fully calibrate the video signal analyzer, so video signals that can meet different error characteristics are needed, and through these deviated video signals The signal is more comprehensively calibrated to the TV video signal analyzer
The prior art does not have a distorted signal generator for calibration of video signal analyzers

Method used

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  • Distortion signal generating device for video signal analyzer calibration
  • Distortion signal generating device for video signal analyzer calibration
  • Distortion signal generating device for video signal analyzer calibration

Examples

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Embodiment Construction

[0110] The present invention will be further described below in conjunction with accompanying drawing.

[0111] A distorted signal generating device used for calibration of a video signal analyzer. The signal required for the distorted signal compilation of the present invention is compiled using the test signal inserted into the test line signal, which is edited based on the international standard insertion line test signal:

[0112] (1) The international 17-line insertion line test signal contains four kinds of test signals: 10μs width white bar pulse, 2T sine square wave, subcarrier filling 20T sine square wave, and 5-order ladder wave. The waveform is as follows: figure 1 shown.

[0113] (2) The international 18-line insertion line test signal is a multi-burst signal: the burst frequencies are 0.5, 1.0, 2.0, 4.0, 4.8, 5.8MHz, and the waveforms are as follows: figure 2 shown.

[0114] (3) The international 330-line insertion line test signal contains three kinds of test ...

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Abstract

The invention provides a distortion signal generating device for video signal analyzer calibration. The distortion signal generating device comprises a line-by-line phase inversion distortion generating device including a differential phase error programming device and a phase error programming device with non-linear chromaticity distortion, a superposed continuous wave distortion generating device including a luminance and noise level signal generating device and an AM / PM noise signal generating device, a superposed pulse distortion generating device including a 2T sinusoidal square wave distortion signal generating device and a short-time waveform distortion signal generating device, a distortion generating device with signal component amplitude changing, and a distortion generating device for signal component splitting, wherein the distortion generating device with signal component amplitude changing includes a luminance non-linear distortion signal generating device and a differential gain distortion signal generating device and the distortion generating device for signal component splitting includes an SINX / X frequency distortion signal generating device and a chrominance / luminance gain difference signal generating device.

Description

technical field [0001] The invention relates to a distortion signal generating device used for calibrating a video signal analyzer. Background technique [0002] Video signal analyzer has instrument measurement functions such as vector oscilloscope, waveform monitor, video noise meter, video level meter, DG / DP tester, color brightness gain / delay difference tester, etc. It is widely used in the measurement of TV video signals, Research and development, manufacture and maintenance of television receivers, etc. Existing TV video signal generators can only output part of the standard video signal, but a single video standard signal cannot fully calibrate the video signal analyzer, so video signals that can meet different error characteristics are needed, and through these deviated video signals The signal is more comprehensively calibrated to the TV video signal analyzer. The prior art does not have a distorted signal generator for calibration of video signal analyzers. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N17/04
CPCH04N17/004H04N17/04
Inventor 刘君荣刘子瑜
Owner GUANGZHOU CEPREI CALIBRATION & TESTING CENT SERVICE
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