Display composite video on analog oscilloscope

Here's a fun project I did the other night. A little circuit to create the necessary XY "ramps" from composite video (NTSC) sync pulses so that you can display the video signal as a picture on an analog oscilloscope.
https://www.youtube.com/watch?v=5FYF5uhCzAM

The internet's too slow to use youtube here but it brings back memories of doing the same thing many years ago. Sadly, it's starting the become difficult to find analog video sources these days!

Brian.

betwixt said:

The internet's too slow to use youtube here but it brings back memories of doing the same thing many years ago. Sadly, it's starting the become difficult to find analog video sources these days!

Click to expand...

I have a digital video camera, and even my fairly new point-n-shoot digital camera (that I make all my videos with) has a composite video output.

See this projects:

https://www.franktechniek.nl/Kits/oscilloscopeclock/oscilloscopeclock.htm



https://www.retrothing.com/2008/02/diy-turn-your-o.html

I've seen those before - very cool stuff!

And did You see this TV or VGA on Scope:

**broken link removed**



**broken link removed**

One of my scopes is a Tek 2232 which has a secret menu if you press the right buttons. You can either see a nice Tektronix 'CRT' logo or an animated Wizard on a skateboard! But that's in the firmware of course, not from an external video source.

Brian.

Best is to have PC scope, there is no such things to try, all is on monitor already. :-D

I designed the M1 head mounted display for Liquid Image Corp around Y2K era. We made a 100 prototype units and they sold for $1k. I used the composite video signal from an ultrasonic scanner, RGB VGA laptop and NTSC VCR and made it sync to all of these signals and display it on an active matrix LCD from Kopin Corp.

It was like a camcorder viewer TV mounted in a headset. Some called it the "world's smallest TV" but with an inbult lens was like a 15" display at arms length. But our inside joke was that it was called the "Pig Monocle" for a Montreal corp client who made Ultrasonic monitors for Pig farmers in South America. I got it working for Vegas trade show using a portable cam chip so Tony bragged to Motorola who had not got their Kopin chip working yet for viewing faxes from cell phones. circa '99. Used for wearable computing market.

Synchronization from various non-std sources was tricky. We used an Altera logic chip to generate the timing signals and could pan the display with buttons on the "walk-man" like user interface mounted on the hip. PLL was done in typical analog style.

Fortunately VGA will be around for a while with RGB signals that can be used separately or combined with a weighted R combiner network.
**broken link removed** The original M1. For Tony Havelka@ Liquid Image designed by Tony Stewart @ C-MAC Winnipeg with support staff.

See this:

https://technabob.com/blog/2008/02/15/tetris-blocks-fall-on-oscilloscope-screen/

tpetar - GREAT examples, I had only seen a few of them previously!

My friend there is more... ;-)

See this show on scope:

https://www.wired.com/gadgetlab/2008/02/video-amazing-o/