Get prepared for ATSC 3.0

It isn’t going to show up tomorrow, but consensus is arriving on how digital TV will change in the future to adopt to the changes in how programming is delivered.

TV since the early days (1941) up until the forced conversion to digital TV in 2010 was based on analog signals using the NTSC standard. It had to be simple as transistors and integrated circuits did not exist. NTSC relied on the 60 cycle (hz) AC to synchronize the electronics. NTSC drew every other line (interlacing) that was mostly invisible to the viewer, resulting in 525 scan lines that refreshed 30 times a second.

Digital TV was a huge improvement over analog, allowing much higher resolution screens squeezing as many as four programming services into the same 4 Mhz of spectrum used by analog TV

ATSC proposes a fundamental change to switch digital TV to be IP(Internet Protocol) based. This will simplify things like incorporating internet streaming directly, allowing streaming to be done to small screen mobile devices and ultra HD screens using the same stream, and bulk data transfers for programming that isn’t needed to be real time (probably 80% of over the air TV). IP based transport allows for future flexibility like improved compression and integration of two way communications to make TV viewing more interactive. The down site is it won’t be backward compatible and will require new digital receivers.

This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply