Tuner ATSC: Béda antarrépisi

'''[[Panarima (radio)|Panarima]] [[ATSC]]''', sering ogeogé disebut '''[[tuner digital|tuner]] ATSC ''' atawa tuner [[HDTV]], bisa narima [[siaran digital|siaran]] sinyal [[televisi digital]] (DTV) ngaliwatan udara ti [[saluran televisi|stasiun TV]] di [[Amérika Kalér]]. Tuner nu siga kieu bisa diterapkeun dina [[televisi]], [[VCR]], [[pangrékam video digital]], jeung [[set-top box]] nu nyayagakeun sababaraha tipe [[konéktor]] kaluaran audio/videovidéo.

Istilah "tuner" nu disaruakeun jeung "panarima" sabenerna mah kurang merenah, da kawasna merenah keneh lamun disebut panarima ATSC, sedengkeun tunerna sorangan, mangrupakeunmangrupa bageanbagéan tina panarima (tempo [[métonim]]). Pamancer ngabangkitkeun sinyal audio jeung videovidéo (AV) nu diperlukeun keur televisi, sarta ngalakukeun sababaraha pagaweanpagawéan: [[démodulasi]], [[Error detection and correction|koréksi kasalahan]], ''[[Multiplexing|demultiplexing]]'' ''[[transport stream]]'', [[Data compression|dekomprési]], [[Analog-to-digital converter|konvéri analog ka digital]], [[singkronisasi]] AV, sarta mormat deui media ''(media reformatting)'' sangkan cocog jeung asupan ''(input)'' nu optimal keur TV. Conto ''media reformatting'' kaasup: ''[[interlace]]'' ka ''[[progressive scan]]'' atawa sabalikna, résolusi gambar, konversi ''[[Aspect ratio (gambar)|aspect ratio]]'' (16:9 ka atawa ti 4:3), konversi ''[[frame rate]]'', katut ''[[scaling]]''. ''Zooming'' mangrupakeunmangrupa hiji conto tina parobahan resolusi. Ilaharna dipakedipaké keur ngarobah gambar nu resolusina handap jadi hiji pidangan nu resolusina luhur.

*[[1 Juli]], [[2005]] sakabehsakabéh TV nu ukuran layarna leuwih ti 36" kudu nyadiakeun tuner DTV ATSC ''built-in''

*[[1 Maret]], [[20062007]] sakabehsakabéh TV nuteu kawates ku ukuran layarna, sarta sakabéh parabot antarbeungeut nu maké tuner (VCR, leuwihpamuter/pangrekam tiDVD, 25"DVR) kudu nyadiakeunmaké tuner DTV ATSC ''built-in''

Dina awal [[2006]], [[Deficit Reduction Act of 2005]]<ref>Pub. L. No. 109-171, 120 Stat. 4 (Feb. 8, 2006).</ref> became law, which calls for [[terrestrial television|over-the-air]] [[television station]]s to ceasecéase their analog broadcasts by [[2009-02-17]] <ref>{{cite web |last= |first= |authorlink= |coauthors= | date= [[2005-11-04]]|url=http://www.msnbc.msn.com/id/9924551/ |title=Senate approves 2009 for end of analog TV |format= |work= |pages= |publisher=MSNBC | language= |accessdate=2006-06-05 |curly= }} Section 3002 of the Act amends 47 U.S.C. section 309(j)(14) to provide for the February 17, 2009 deadline.</ref> (this cut-off date has been moved forward several times previously). Following that date, TVs and other equipment with legacy NTSC tuners would be unable to receive over-the-air broadcasts. This switch-off would cause tens of thousands of TVs to go dark and would cut off many lower-income viewers of their only source of television. A Congressional bill has authorized subsidizing [[set-top box|converter boxes]] that would allow peoplepéople to receive the new digital broadcasts on their old TVs.

The current plan<ref>{{cite web |last= |first= |authorlink= |coauthors= | date=[[2006-07-20]]|url=http://www.ntia.doc.gov/ntiahome/frnotices/2006/couponprogram_nprm_07202006.htm |title=DTV Coupon Program NPRM |format= |work= |pages= |publisher=[[National Telecommunications and Information Administration|NTIA]] | language= |accessdate=2006-09-13 |curly= }}</ref> is to makemaké two $40 coupons available from [[2008-01-01]] through [[2009-03-31]] for eachéach household that relies exclusively on over-the-air television reception.

[[CategoryKategori:ATSC]]

[[CategoryKategori:Televisi digital]]

[[CategoryKategori:High-definition television]]