Editing Digital video recorder (section)

=== Introduction of dual tuners ===
In 2003 many Satellite and Cable providers introduced dual-tuner digital video recorders. In the UK, [[BSkyB]] introduced their first PVR [[Sky+]] with dual tuner support in 2001.<ref>{{cite web|title=Sky's second PVR to debut by March 2001|url=http://www.broadcastnow.co.uk/skys-second-pvr-to-debut-by-march-2001/1201341.article|date = 12 September 2000|url-status=dead|archive-url=https://web.archive.org/web/20170407054202/http://www.broadcastnow.co.uk/skys-second-pvr-to-debut-by-march-2001/1201341.article|archive-date=2017-04-07}}</ref> These machines have two independent tuners within the same receiver. The main use for this feature is the capability to record a live program while watching another live program simultaneously or to record two programs at the same time, possibly while watching a previously recorded one. [[Kogan.com]] introduced a dual-tuner PVR in the Australian market allowing free-to-air television to be recorded on a removable hard drive. Some dual-tuner DVRs also have the ability to output to two separate television sets at the same time. The PVR manufactured by UEC ([[Durban]], South Africa) and used by [[Multichoice]] and [[Scientific Atlanta]] 8300DVB PVR have the ability to view two programs while recording a third using a triple tuner.

Where several [[digital subchannel]]s are transmitted on a single RF channel, some PVRs can record two channels and view a third, so long as all three subchannels are on two channels (or one).<ref>[http://seura.com/TF5000PVRt(ExceptAustralia)1.0.pdf Manual of a PVR which can record 2 programs and watch a third if only 2 multiplexes used; see section 3.5.2: watching television while dual recording] {{Webarchive|url=https://web.archive.org/web/20140426232641/http://seura.com/TF5000PVRt(ExceptAustralia)1.0.pdf |date=2014-04-26 }} Retrieved 2014-04-25.</ref>

In the United States, DVRs were used by 32 percent of all TV households in 2009, and 38 percent by 2010, with viewership among 18- to 40-year-olds 40 percent higher in homes that have them.<ref name=WhyNewShows>Battaglio, Stephen. "Why the New Shows Aren't Working" ''[[TV Guide]]''; October 18, 2010; Pages 6–7</ref>