Tuner ATSC

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Receiver ATSC, sering oge disebut tuner ATSC atawa tuner HDTV, bisa narima siaran sinyal televisi digital (DTV) ngaliwatan udara ti 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/video.

Daptar eusi

[édit] Sawangan téhnis

Artikel ieu keur dikeureuyeuh, ditarjamahkeun tina basa Inggris.
Bantosanna diantos kanggo narjamahkeun.

The terms "tuner" and "receiver" are used loosely, and it is perhaps more appropriately called an ATSC receiver, with the tuner being part of the receiver (see Metonymy). The receiver generates the audio and video (AV) signals needed for television, and performs the following tasks: demodulation, error correction, transport stream demultiplexing, decompression, analog to digital conversion, AV synchronization, and media reformatting to match what is optimal input for one's TV. Examples of media reformatting include: interlace to progressive scan or vice versa, picture resolutions, aspect ratio conversions (16:9 to or from 4:3), frame rate conversion, even scaling. Zooming is an example of resolution change. Commonly used to convert a low resolution picture to a high resolution display.

[édit] Mandat Pamaréntah A.S

The FCC has issued the following mandates for devices entering the US [1] [2] [3]:

  • By 1 Juli, 2005 all televisions with screen sizes over 36" must include a built-in ATSC DTV tuner
  • By 1 Maret, 2006 all televisions with screen sizes over 25" must include a built-in ATSC DTV tuner
  • By 1 Maret, 2007 all televisions regardless of screen size, and all interface devices which include a tuner (VCR, DVD player/recorder, DVR) must include a built-in ATSC DTV tuner

[édit] Analog TV broadcast switch-off

In early 2006 the Deficit Reduction Act of 2005[4] became law, which calls for over-the-air television stations to cease their analog broadcasts by 2009-02-17 [5] (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 converter boxes that would allow people to receive the new digital broadcasts on their old TVs. The current plan[6] is to make two $40 coupons available from 2008-01-01 through 2009-03-31 for each household that relies exclusively on over-the-air television reception.

[édit] Rujukan

  1. FCC INTRODUCES PHASE-IN PLAN FOR DTV TUNERS (PDF). FCC (2002-08-08). Dicutat 2006-06-05.
  2. Requirements for Digital Television Receiving Capability (PDF). FCC (2005-11-08). Dicutat 2006-06-05.
  3. FCC Moves Up DTV Tuner Date, Broadens Scope. TWICE (2005-11-21). Dicutat 2006-08-30.
  4. Pub. L. No. 109-171, 120 Stat. 4 (Feb. 8, 2006).
  5. Senate approves 2009 for end of analog TV. MSNBC (2005-11-04). Dicutat 2006-06-05. Section 3002 of the Act amends 47 U.S.C. section 309(j)(14) to provide for the February 17, 2009 deadline.
  6. DTV Coupon Program NPRM. NTIA (2006-07-20). Dicutat 2006-09-13.

[édit] Tempo oge

  • Digital terrestrial television
  • Siaran digital
  • QAM tuner
  • High-definition television in the United States
  • Virtual channel

[édit] Tumbu luar