Study And Implementation Of Video Signal Generation And Triggering In Oscilloscope

In today's word,the development of video technology is changing with each passing day.So the video signal and image signals are becoming more and more high-definition and digital,which on the video signal generation devices and capture devices put forward higher requirements.According to this change,many video signal generators which can produce high-definition are coming out,while more and more oscilloscopes to add high-definition video signal trigger function.The main task of this subject is to research the video signal generation technology and oscilloscope video trigger technology.The video signal generator of the final system requires the ability to send the normal standard video signal and high-definition video signal,and the video signal trigger module requires to trigger the normal standard video signal and high-definition video signal.The main contents include:(1)Research on television signal protocol.First of all,research the existing TV signal protocol such as CCIR601 and CCIR656 protocol and the high-definition television signal protocol,then should focus on the relationship of each television signal correlation,implementation methods,working principle and so on.(2)Research and design of video signal producing module.The video signal generation module is required to output an HDTV(High Definition Television)signal such as 720 P,1080P,1080 I,etc,in addition to the ordinary standard video signal such as NTSC and PAL.(3)Research and design the oscilloscope video signal trigger module.It is necessary to generate the corresponding vertical sync signal and horizontal sync signal according to the video signal.In addition to being able to trigger video signals such as NTSC,PAL and SECAM,also can trigger 720 P,1080P,1080 I and other formats HDTV(High Definition Television)signal.The design of the system can not only realize the video signal and can realize the video signal trigger,while the video signal in the standard definition on the basis of adding a variety of formats of high-definition video siginals.This combines the occurrence and capture of the video signal into the same system.