EIA/CEA-861-B：高清数字接口标准

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"EIA-CEA-861-B 视频定时标准是针对未压缩高速数字接口的数字电视(DTV)配置文件，常用于HDMI和EDID系统中的数字视频传输。" EIA（美国电子工业协会）与CEA（消费电子协会）联合发布的EIA/CEA-861-B标准，是针对高清数字电视(HDTV)在未压缩高速数字接口上的应用制定的一套详细规范。这个标准是EIA/CEA-861-A的修订版，发布于2002年，旨在消除制造商和消费者之间的误解，促进设备的互换性，提高产品性能，并帮助用户快速选择合适的产品。 EIA/CEA-861-B标准主要关注视频定时，这是指视频信号的帧率、分辨率、扫描方式等关键参数。这些参数对于确保数字视频设备（如电视、显示器、播放器等）之间的兼容性和高质量视频传输至关重要。标准涵盖了各种显示模式，包括标清、高清以及超高清视频格式，确保不同设备间的视频内容可以无缝传输。 HDMI（高清晰度多媒体接口）是广泛应用的数字接口，它依赖于EIA/CEA-861-B标准来提供视频定时信息。EDID（扩展显示识别数据）是HDMI的一部分，存储在显示器内部，包含了显示器的能力和首选设置，其中就包含了EIA/CEA-861-B定义的视频定时规格。当HDMI源设备（如蓝光播放器或游戏机）连接到显示器时，它会读取EDID，以确定最佳的视频输出设置。此外，EIA/CEA-861-B还涉及到色彩空间、色深、刷新率、同步信号类型等技术细节。这些信息对于确保数字视频信号的准确传输和正确显示至关重要。标准的制定有助于减少市场上的不兼容问题，推动数字视频技术的发展。 EIA/CEA-861-B是数字视频产业中的一个重要参考标准，对HDMI和EDID系统的功能和性能设定了明确的指导，促进了不同设备间的互操作性，确保了高清内容的无损传输。无论是制造商还是消费者，都应了解并遵循这一标准，以实现最佳的视频体验。

EIA/CEA-861-B

Table 1 Summary of EIA/CEA-861X Requirements and Capabilities

Source Side (sent in video frames)* DTV Monitor Side (discovered at pwr up) *

EIA/CEA-861 Support

No AVI InfoFrame support

Colorimetry: SMPTE 170M, ITU 601 (or EIA-770.2A),

ITU-709 (or EIA-770.3).

Quantization Levels: ITU 601; ITU-709.

EDTV: 640x480p, 720x480p; HDTV: 640x480p,

720x480p, and 1280x720p or 1920x1080i.

E-EDID (only two 18 byte detail timing descriptors

available in base EDID) and CEA EDID Timing

Ext. Ver 1 for extra 18-byte descriptors.

One preferred Aspect Ratio per video format timing

(single AR monitors)

EIA/CEA-861A Support

AVI Info Frame Ver. 1 Support - Sec. 6.1

- Aspect Ratio, Color, AFD, Bar width, over/under

scan.

Colorimetry: same as 861, except if a different one is

specified in AVI Info Frame.

50Hz Timing Formats added

CEA EDID Timing Ext. Ver 2

- Simultaneous support of 16x9 & 4x3 versions

of same video timing. (Dual Aspect Ratio

DTV)

- Several native timing formats can be

supported.

- First format or AR listed is most preferred.

- Basic audio indicator.

- Y,Cb,Cr pixel formats.

EIA/CEA-861B Support

AVI Info Frame Ver 2 – Sec. 6.1.1

Source Product Data InfoFrame (New) -- Sec. 6.2

Audio InfoFrame (new) – Sec. 6.3

MPEG Source InfoFrame (new) – Sec. 6.4

Optional Game/1080p formats

CEA EDID Timing Ext. Ver. 3 -- Sec. 7.5

CEA Short Video Descriptors.

CEA Short Audio Descriptors

Speaker Allocation Data Block

Vendor Unique Data Block

* Interface Requirements may have implications on both sides of the interface.

Note 1: Later versions of 861 are backward compatible with earlier versions, so later versions include all

of the previous version’s requirements and capabilities.

Note 2: If Ver 3 CEA Timing Ext. is implemented, all CEA formats, indicated in E-EDID for that monitor,

shall use the Short Video Descriptor, even if they are also required to use 18-byte detailed timing

descriptors.

Note 3: If the DTV Monitor has provided a timing descriptor for a particular video format decoded in the

source, it is recommended that the source send video across the interface without performing format

conversion. If a conversion must be done, it is recommended that the conversion be to a format identified

by the display as a ‘native format’. If for some reason the source cannot supply that format, the source

should supply the next most preferred format, and so on to the last format advertised.

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EIA/CEA-861-B

2 GENERAL

2.1 Scope

This standard includes mechanisms that allow a digital video source (such as a cable or

terrestrial set-top box, digital VCR, or DVD player) to supply displayable, baseband,

digital video to HDTV Monitors and EDTV Monitors (DTV Monitors), as defined in CEA

Expands Definitions for Digital Television Products [16].

The timing requirements for video formats are described along with requirements for

video format discovery. Also, a mechanism allowing the source device to discover all

supported formats and the preferred formats of a DTV Monitor is described. Four basic

video format timings from 861 are defined in this document for countries using 60 Hz.

systems. Two are high definition formats (1920x1080i, 1280x720p), one is enhanced

definition (720x480p), and the remaining one is standard definition (720X480i).

Additionally, six new 60 Hz format timings have been added in this standard (861B). All

of these new formats are optional. Their discovery is handled somewhat differently

than the previously defined formats due to the desire to reduce the number of bytes

used to discover formats and at the same time maintain backward compatibility with

861 and 861A. Several of the vudeo format timings (old and new) are available in two

different picture aspect ratios. A method of indicating to the DTV Monitor the picture

aspect ratio and colorimetry in which the video should be displayed is included. Several

of the new video formats are game formats. These formats have 2880 pixels per line in

the transmitted form, but the number of pixels displayed is less (based on a pixel repeat

field).

For countries using 50 Hz systems, four similar video format timings from 861A have

also been defined in this document. Two are high definition formats (1920x1080i,

1280x720p), one is enhanced definition (720x576p), and one is standard definition

(720X576i). Additionally, six new 50 Hz format timings have been added in this

standard (861B). All of these new formats are optional. Their discovery is handled

somewhat differently than the previously defined formats due to the desire to reduce

the number of bytes used to discover formats and at the same time maintain backward

compatibility with 861 and 861A. Several of the video format timings (old and new) are

available in two different picture aspect ratios. The method of indicating to the DTV

Monitor the aspect ratio and colorimetry in which the video should be displayed also

applies. Several of these new 50 Hz formats are also game formats.

An additional format added to 861B is a version based on a film frame rate

(1920X1080p @ 24Hz). This format is available in only 16:9 picture aspect ratio.

This standard specifies how EDID is used to describe DTV capabilities to source

devices. The ability to send colorimetry and picture aspect ratio information to the DTV

was added in 861A. 861B adds other types of information that can optionally be sent to

the DTV.

Obtained from GLOBAL ENGINEERING DOCUMENTS

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EIA/CEA-861-B

2.2 Normative references

The following standards contain provisions that, through reference in this text, constitute

normative provisions of this standard. At the time of publication, the editions indicated

were valid. All standards are subject to revision, and parties to agreements based on

this standard are encouraged to investigate the possibility of applying the most recent

editions of the standards listed in Sec. 2.2.1. If the referenced standard is dated, the

reader is advised to use the version specified.

2.2.1 Normative reference list

1. ANSI/SMPTE 170M-1999 Composite Analog Video Signal—NTSC for Studio

Applications, 1999.

2. DDWG, “Digital Visual Interface,” Revision 1.0, April 2, 1999.

3. ETSI TR 101 154 v1.4.1, Digital Video Broadcasting (DVB); Implementation

Guidelines for the Use of MPEG-2 Systems, Video and Audio in Satellite,

Cable and Terrestrial Broadcasting Applications (Annex B), July 2000.

4. Intel, High-bandwidth Digital Content Protection System, Version 1.0, February

17, 2000.

5. ITU-R BT.601-5, Studio Encoding parameters of digital television for standard

4:3 and wide-screen 16:9 aspect ratios, 1995.

6. ITU-R BT.709-4, Parameter Values for the HDTV standard for production and

International Programme Exchange, 2000.

7. Open LVDS Display Interface (Open LDI) Specification,” Version 0.95, May 13,

1999.

8. VESA E-EDID Standard, VESA Enhanced Extended Display Identification

Data Standard, Release A, Revision 1, February 9, 2000.

9. VESA E-DDC Standard, VESA Enhanced Display Data Channel Standard,

Version 1, September 2, 1999.

10. VESA Monitor Timing Specifications, VESA and Industry Standards and

Guidelines for Computer Display Monitor Timing, Version 1.0, Revision 0.8,

Adoption Date: September 17, 1998.

2.2.2 Normative reference acquisition

AEIA/CEA Standards

• Global Engineering Documents, World Headquarters, 15 Inverness Way East,

Englewood, CO USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740

URL global.ihs.com; Email global@ihs.com

ANSI/EIA Standards: United States of America

• American National Standards Institute, Customer Service, 11 West 42nd Street,

New York NY 10036; Phone 212-642 4900; Fax 212-302-1286

URL www.ansi.org

; Email sales@ansi.org

In some instances, only specified sections of a standard may be normative. References listed below

shall take precedence over references within these listed references.

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EIA/CEA-861-B

ANSI/SMPTE Standards

• Society of Motion Picture and Television Engineers, 595 W. Hartsdale Avenue,

White Plains, NY 10607-1824, Phone 914-761-1100, Fax 914-761-3115

URL www.smpte.org

DDWG

• Contact Digital Display Working Group (DDWG); Attn: DDWG Administrator; M/S

JF3-361; 2111 NE 25th Avenue, Hillsboro, OR 97124-5961, USA; Fax: (503)264-

5959; Email: ddwg.if@intel.com

; URL: www.ddwg.org

HDCP

• Contact Digital Content Protection, LLC; EMail: info@digital-cp.com

; URL:

www.digital-cp.com

ITU Standards

• International Telecommunications Union, Place des Nations, CH-1211 Geneva 20,

Switzerland; Phone +41 22 730 5111; Fax +41 22 733 7256

URL www.itu.sh/publications/bookstore.html

; Email itumail@itu.int

OpenLDI

• Contact National Semiconductor: WWW.National.com/appinfo/fpd

VESA Standards

• Contact Video Electronics Standards Association, 920 Hillview Court, Suite 140,

Milpitas, CA 95035, USA; telephone: (408) 957-9270

URL www.vesa.org.

2.3 Informative References

The following documents contain information that is useful in understanding this

standard. Some of these documents are drafts of standards that may become

normative references in a future release of this standard.

2.3.1 Informative document list

11. ANSI/SMPTE Standard 253M (1998), Standard for Television—Three-Channel

RGB Analog Video Interface.

12. ANSI/SMPTE Standard 274M (1998), Standard for Television—1920X1080

Scanning and Analog and Parallel Digital Interfaces for Multiple-Picture

Rates.

13. ANSI/SMPTE Standard 293M (1996), Standard for Television—720X483 Active

Line at 59.94 Hz Progressive Scan Production—Digital Representation.

14. ANSI/SMPTE 296M (2001), Standard for Television—1280 X720 Scanning,

Analog and Digital Representation and Analog Interface.

15. ATSC Standard A/52, Digital Audio Compression (AC-3) Standard, December

20, 1995.

16. CEA Press Release; CEA Expands Definitions for Digital Television Products;

August 31, 2000.

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EIA/CEA-861-B

17. DVD Forum, DVD Specifications for Read-Only Disc, Part3, Video

Specifications, Version 1.0, August 1996.

18. DVD Forum, DVD Specifications for Read-Only Disc, Part 4, Audio

Specifications, Version 1.0.

19. EIA/CEA-770.2-C, Standard Definition TV Analog Component Video Interface,

August 2001.

20. EIA/CEA-770.3-C, High Definition TV Analog Component Video Interface,

August 2001.

21. EIA/CEA-849A, Application profiles for EIA-775A compliant DTVs, 2001

22. EIA/CEA-861, A DTV Profile for Uncompressed High Speed Digital Interfaces,

January 2001.

23. EIA/CEA-861A, A DTV Profile for Uncompressed High Speed Digital Interfaces,

December 2001.

24. ETSI TR 101 154 v1.4.1, Digital Video Broadcasting (DVB); Implementation

Guidelines for the Use of MPEG-2 Systems, Video and Audio in Satellite,

Cable and Terrestrial Broadcasting Applications, July 2000.

25. IEC61937 Digital Audio - Interface for non-linear PCM encoded audio

bitstreams applying IEC60958, First Edition, 2000.

26. IEC60958-1 Digital Audio Interface - Part 1: General, First Edition, 1999.

27. IEC60958-3 Digital Audio Interface - Part 3: Consumer Applications, First

Edition, 1999.

28. ISO/IEC 11172-3:1993, Information Technology - Coding of moving pictures

and associated audio for digital storage media at up to about 1.5 Mbit/sec,

Part 3: Audio, 1993.

29. ISO/IEC 13818-3, Information Technology - Generic coding of moving pictures

and associated audio information, Part 3: Audio, Second Edition, 1998-04-

15.

30. ISO/IEC 14496-3, Information Technology - Coding of audio-visual objects, Part

3: Audio, Amendment 1: Audio Extensions, 2000-09-15.

31. ITU-R BT.1358, Studio Parameters of 625 and 525 Line Progressive Scan

Television Systems, 1998.

32. ITU-R BT.470–6, Conventional Television Systems, 1998.

33. ITU-R BT.656–4, Interfaces for Digital Component Video Signals in 525-line and

625-line Television Systems Operating at the 4:2:2 Level of

Recommendation, 1998.

34. ITU-R BT.711–1, Synchronizing Reference Signals for the Component Digital

Studio, 1992.

35. VESA DDC/CI Standard, VESA Display Data Channel Command Interface

(DDC/CI) Standard, Version 1, August 14, 1998.

36. VESA DI-EXT, Display Information Extension Block (DI-EXT) for E-EDID,

Release A, August 21, 2001.

37. VESA E-EDID Implementation Guide, VESA Enhanced Extended Display

Identification Data—Implementation Guide, Version 1.0, June 4, 2001.

38. VESA GTF Standard, VESA Generalized Timing Formula Standard, Version

1.1, September 2, 1999.

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