As long as cable doesn't outpace whatever ATSC standard is in place, it doesn't really matter what they use. The fact that most operators require some manner of adapter now mitigates that concern. When was the last time you saw a CableCARD capable TV?You're right, ATSC is the broadcast standard. The change would be the compression algorithm.
Probably none and that's okay.How many headends are currently compatible/capable of h265 compression is the question.
You can't do compression or encryption in software at that level.If it's just a firmware update or will it require a hardware update?
ATSC is the current standard. ATSC 2.0 was never really visited. It was more about being two-way protocol and without ubiquitous broadband access, it isn't really all that exciting other than adding the possibility of advanced compression methods.Will they simulcast ATSC 2.0 (the current 'standard') , along with 3.0, for say 5 yrs, to let the consumers existing equipment die a 'natural death'? While selling 3.0 compatible tv's to replace those. So the upgrade is transparent to the consumer.
At the rate that modern TVs become undesirable, I don't think it would take all that long. The transition will always be painful... always.
The attraction of QAM has nothing to do with multipath rejection. It is all about all frequencies being used and the efficiency of multiplexing. It is relatively useless to look at the relatively closed ecosystem of cable television with OTA issues as the primary concern.QAM (Modulation) is used by cable because of it superior performance to multipath, over the modulation used by OTA (8VSB) (from what I've read) Where does cable experience multipath. you ask? Customer disconnects a television and leaves the jack open (unterminated) = signal reflection.