Texas says your TV takes a picture of your screen twice a second. That's probably why your phone keeps showing you ads for stuff you only ever watched on the TV. The state sued Samsung, LG, Sony, Hisense and TCL over it last December. The tech is called automatic content recognition, or ACR. Every half second, the TV grabs whatever is on the screen, turns it into a fingerprint, and matches it against a giant library of shows and commercials. It doesn't care where the picture comes from. Cable,…