هيئة أنظمة التلفزيون المتطورة

قائمة معايير بث التلفزيون الرقمي

DVB family (Europe)

DVB-S (satellite) DVB-S2

DVB-T (terrestrial) DVB-T2

DVB-C (cable) DVB-C2

DVB-H (handheld) DVB-SH (satellite)

ATSC family (North America)

ATSC (terrestrial/cable)

ATSC-M/H (mobile/handheld)

ISDB family (Japan/Latin America)

ISDB-S (satellite)

ISDB-T (terrestrial) 1seg (handheld)

ISDB-C (cable)

SBTVD/ISDB-Tb (Brazil)

Chinese Digital Video Broadcasting standards

DMB-T/H (terrestrial/handheld)

ADTB-T (terrestrial)

CMMB (handheld)

DMB-T (terrestrial)

DMB Family (Korean handheld)

T-DMB (terrestrial)

S-DMB (satellite)

MediaFLO

Codecs

Video MPEG-2 H.264/MPEG-4 AVC

Audio MP2 MP3 AC-3 AAC HE-AAC

Frequency bands

VHF

UHF

SHF

هيئة أنظمة التلفزيون المتطورة ATSC=Advanced Television System Committee هي هيئة حكومية أمريكية ذات طابع فنـي صناعي مكلفـة بتطوير أسـلوب وأداء ومفاهيم التلفزيـون الرقمي DTV=Digital TV ووضع المعايير المناسبة له ضمن الولايات المتحدة منـذ عام 1997. يتعلق معيار ATSC أيضا بمفهومي البث التلفｄｆｓｇｆｄｇｆｄｄっさزيوني الرقمي DTV والبث التلفزيوني الرقمي ذو الأداء المتطور HDTV .

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 MPEG-2

ATSC Standard A/53 Part 4:2009 (MPEG-2 Video System Characteristics)

Resolution		Aspect ratio	Pixel aspect ratio	Scanning	Frame rate (Hz)
Vertical	Horizontal
1080	1920	16:9	square	progressive	23.976 24 29.97 30
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s)
720	1280	16:9	square	progressive	23.976 24 29.97 30 59.94 60
480	704	4:3 or 16:9	non-square	progressive	23.976 24 29.97 30 59.94 60
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s)
	640	4:3	square	progressive	23.976 24 29.97 30 59.94 60
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s)

ATSC also supports PAL frame rates and resolutions which are defined in ATSC A/63 standard.

ATSC Standard A/63:1997 (Standard for Coding 25/50 Hz Video)

Resolution		Aspect ratio	Pixel aspect ratio	Scanning	Frame rate (Hz)
Vertical	Horizontal
1080	1920	16:9	square	interlaced	25 (50 fields/s)
				progressive	25
720	1280	16:9	square	progressive	50
576	720	4:3 or 16:9	non-square	progressive	25 50
				interlaced	25 (50 fields/s)
	544	4:3 or 16:9	non-square	progressive	25
				interlaced	25 (50 fields/s)
	480	4:3 or 16:9	non-square	progressive	25
				interlaced	25 (50 fields/s)
	352	4:3 or 16:9	non-square	progressive	25
				interlaced	25 (50 fields/s)
288	352	4:3 or 16:9	non-square	progressive	25

The new standards supports 1080p at 50, 59.94 and 60 frames per second; such frame rates require H.264/AVC High Profile Level 4.2, while standard HDTV frame rates only require Levels 3.2 and 4, and SDTV frame rates require Levels 3 and 3.1.

ATSC Standard A/72 Part 1:2008 (Video System Characteristics of AVC)

Resolution		Aspect ratio	Pixel aspect ratio	Scanning	Frame rate (Hz)	Level
Vertical	Horizontal
1080	1920	16:9	square	progressive	23.976 24 29.97 30 25	4
				progressive	59.94 60 50	4.2
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s) 25 (50 fields/s)	4
	1440	16:9	non-square (4:3)	progressive	23.976 24 29.97 30 25	4
				progressive	59.94 60 50	4.2
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s) 25 (50 fields/s)	4
720	1280	16:9	square	progressive	23.976 24 29.97 30 59.94 60 25 50	3.2, 4
480	720	4:3 or 16:9	non-square (10:11 or 40:33)	progressive	23.976 24 29.97 30 59.94 60 25 50	3.1, 4
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s) 25 (50 fields/s)	3
	704	4:3 or 16:9	non-square (10:11 or 40:33)	progressive	23.976 24 29.97 30 59.94 60 25 50	3.1, 4
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s) 25 (50 fields/s)	3
	640	4:3	square	progressive	23.976 24 29.97 30 59.94 60 25 50	3.1, 4
				interlaced	29.97 (59.94 fields/s) 30 (60 fields/s) 25 (50 fields/s)	3
	544	4:3	non-square (40:33)	progressive	23.976 25	3
				interlaced	29.97 (59.94 fields/s) 25 (50 fields/s)
	528	4:3	non-square (40:33)	progressive	23.976 25	3
				interlaced	29.97 (59.94 fields/s) 25 (50 fields/s)
	352	4:3	non-square (20:11)	progressive	23.976 25	3
				interlaced	29.97 (59.94 fields/s) 25 (50 fields/s)
240	352	4:3	non-square (10:11)	progressive	23.976 25	3
120	176	4:3	non-square (10:11)	progressive	23.976 25	1.1

 الأنظمة الأخرى

انظر أيضاً: Digital terrestrial television

 البلدان والأراضي التي تستعمل ATSC

 الأمريكتان

• البهاماز
• برمودا
• كندا (in provincial/territorial capitals and locations with 300,000 or more people; to be completely transitioned by August 31, 2011)

 آسيا/الهادي

• كوريا الجنوبية (to be completely transitioned by December 31, 2012)
• United States territories (converted on June 12, 2009, excluding LPTV stations)
  • ساموا الأمريكية
  • گوام
  • جزر ماريانا الشمالية

 انظر أيضاً

• Advanced Television Systems Committee
• ATSC tuner
• List of ATSC standards
• broadcast flag
• Digital terrestrial television
• Redesign project, project set up by cable operators, equipment manufacturers, and research organisations
• T-DMB Korean terrestrial mobile digital broadcasting system
• DMB-T/H Chinese terrestrial digital broadcasting system
• Digital Video Broadcasting
• ISDB - Integrated Services Digital Broadcasting
• EIA-708
• OpenCable
• Broadcast safe

 وصلات خارجية

• ATSC website
• ATSC standards download page
• ATSC-MH Platform for testing and deploying Mobile TV in the US
• ATSC Mobile DTV (ATSC-MH) Analysis, Monitoring, Measurement
• ATSC Mobile DTV (ATSC-MH) Mobile DTV Viewer