In Japan and Brazil, ISDB (similar to DVB) is used, and was specifically designed with physical RF segments that could be split to use for different subchannels.
Read more about this topic: Digital Subchannel
Famous quotes containing the word television:
“Never before has a generation of parents faced such awesome competition with the mass media for their childrens attention. While parents tout the virtues of premarital virginity, drug-free living, nonviolent resolution of social conflict, or character over physical appearance, their values are daily challenged by television soaps, rock music lyrics, tabloid headlines, and movie scenes extolling the importance of physical appearance and conformity.”
—Marianne E. Neifert (20th century)