I grew quite an appreciation of color TV recently when I made a software-defined SECAM decoder. It's mind-boggling that they were able to do this with 60s technology, to be honest. But then what do I know, analog electronics is witchcraft to me :D
edit: I watched the video. It only took them until the 13th minute of a 15-minute video to show something resembling a real video waveform, lol. That's, uh, not how you explain how TV works.
SECAM was pretty crazy because it required a delay line: a memory that would hold the previous scanline so it can be combined with the current one.
Without digital circuits, the delay line was a piece of glass. You’d convert the video signal to a sound wave, send it through the glass, and (hopefully) get it back exactly 64 us later so it aligns with the next scanline.
In the first 90 seconds, the narration refers to "the insane 19th century electronics that made color possible", but is referring to the 1900s, which were the 20th century.
The video contains no insight at all into "why" color TV was so difficult. It just lists and describes a few key advancements.
Also the "invention" of color TV is very different from the commercialization.
Before Youtube and Wikipedia there used to be a great website I liked to read about Philo Farnsworth but cannot remember the name of it for the life of me now
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https://github.com/grishka/miscellaneous/blob/master/AVDecod...
edit: I watched the video. It only took them until the 13th minute of a 15-minute video to show something resembling a real video waveform, lol. That's, uh, not how you explain how TV works.
Without digital circuits, the delay line was a piece of glass. You’d convert the video signal to a sound wave, send it through the glass, and (hopefully) get it back exactly 64 us later so it aligns with the next scanline.
Here’s a picture: https://www.eevblog.com/forum/projects/glass-ultrasonic-dela...
The video contains no insight at all into "why" color TV was so difficult. It just lists and describes a few key advancements.
Also the "invention" of color TV is very different from the commercialization.
(How Analog Color TV Works: The Beginnings) https://www.youtube.com/watch?v=dX649lnKAU0
Then the playlist on TV stuff: https://www.youtube.com/watch?v=l4UgZBs7ZGo&list=PLv0jwu7G_D...
Don't blame me for the rabbit hole :P