Commercial Television is 70 years old today.

[tubesrule]

Originally Posted by ppppenguin

As for interlace, Paul Marshall first brought Ulises Sanabria to my attention. This page claims he used interlace in 1926: http://www.televisionexperimenters.com/sanabria.html Not sure when baird first used interlace which he called intercalation.

Jeff,
This is true. Sanabria used a triple interlace system on his 45 line mechanical televisions, the most famous being the "Western". I have never been able to determine why he chose triple interlace versus dual. I am not aware of any other commercially available mechanical television that employed interlace.

Darryl