Wikipedia: History of Digital television

Difference (from prior major revision) (no other diffs)

Added: 6a7,9

Attempts where made during the development of digital television to prevent a repeat of the fragmentation of the global market into different standards (i.e. PAL, SECAM, NTSC). However, the world could not agree on a single standard (why?), and hence there are two major standards in existence, the European system, DVB, and the U.S. system, ATSC. (Doesn't Japan have its own system as well?). Most countries in the world have adopted DVB, but several have followed the U.S. in adopting ATSC instead (Canada, South Korea, Argentina and Taiwan). (See http://www.dvb.org/dvb_technology/worldadoption.html for a map, although the map is biased towards DVB.)

Is the below talking about all DTV systems, or just ATSC, or what?

Changed: 10c13,15

Many signals carry encryption and specify use conditions (such as "may not be recorded" or "may not be viewed on displays larger than 1 m in diagonal measure") backed up with the force of law from the Digital Millennium Copyright Act and foreign counterparts.

Many signals carry encryption and specify use conditions (such as "may not be recorded" or "may not be viewed on displays larger than 1 m in diagonal measure") backed up with the force of law under the WIPO Copyright Treaty (and national legislation implementing it, such as the U.S. Digital Millennium Copyright Act).

	Revision 9 . . November 3, 2001 2:41 pm by Simon J Kissane [mention that there are multiple standards for DTV; tried to excise US centric content to a separate section]
	Revision 8 . . October 31, 2001 8:10 am by Damian Yerrick [Encryption and DMCA]

History of Digital television

Digital television in the U.S.