CTA861HFinalspec详细的spec资料资源-CSDN文库

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CTA 861 H是数字电视(DTV)领域的一个标准，主要定义了无压缩高速数字接口的详细规格。这个标准由消费者技术协会(Consumer Technology Association，CTA)制定，旨在促进制造商和消费者之间的理解，确保产品的互换性和性能提升，并帮助消费者更有效地选择和获取适合的产品。该标准遵循美国国家标准学会(ANSI)的专利政策，但CTA并不对任何专利权人承担责任，也不对采用标准的各方承担义务。 CTA-861-H标准发布于2020年12月，是高清多媒体接口(HDMI)和视频电子标准协会(VESA)规范的一部分。HDMI是一种广泛应用于电视、显示器、音频设备等的数字接口，能够同时传输音频和视频信号。VESA则是制定显示标准的组织，如DisplayPort接口也是其成果之一。CTA 861 H可能是对这些接口在高清电视应用中的具体扩展或更新。标准中可能包含的关键知识点包括： 1. **带宽支持**：CTA 861 H可能规定了接口的最大数据传输速率，以支持高分辨率和高刷新率的视频传输，例如4K和8K分辨率，以及120Hz以上的刷新率。 2. **颜色空间和编码**：标准可能会定义支持的颜色格式，如RGB、YCbCr，以及颜色深度，如8位、10位、12位，甚至更高，以实现更精确的色彩表现。 3. **动态范围**：可能包含了HDR（高动态范围）的支持，如HDR10、HDR10+、Dolby Vision等，这些技术能够提供更广阔的亮度和对比度范围。 4. **音频格式**：CTA 861 H可能涵盖各种音频编解码器的兼容性，如AAC、Dolby Digital Plus、DTS-HD等，以满足不同音频质量的需求。 5. **连接器和电缆规范**：标准可能规定了接口的物理特性，包括接口的形状、尺寸、引脚配置，以及电缆的电气性能和长度限制。 6. **信号同步和检测**：可能包括自动识别和配置功能，如EDID（扩展显示标识数据），允许设备自动识别显示器的特性并调整输出设置。 7. **错误检测和纠正**：为了保证信号的稳定传输，标准可能规定了错误检测和恢复机制，如CRC校验或其他错误纠正技术。 8. **互操作性测试**：CTA 861 H可能会提供一套测试流程，确保不同的设备间可以顺利通信，减少兼容性问题。 9. **合规性和认证**：标准可能包含产品符合性的测试和认证程序，以确保产品符合CTA 861 H的所有要求。 10. **安全与法规**：虽然标准不直接涵盖所有安全问题，但它会提醒用户在使用时注意安全实践，遵循相关法规，比如电磁兼容性(EMC)、电气安全等。 CTA 861 H是消费电子领域的重要标准，它的实施有助于确保设备间的无缝对接，提高消费者的观看体验。对于制造商来说，理解并遵循这一标准至关重要，因为它不仅关乎产品性能，还影响着产品的市场接受度和兼容性。

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CTA Standard

A DTV Profile for Uncompressed High Speed

Digital Interfaces

CTA-861-H

December 2020

NOTICE

Consumer Technology Association (CTA)™ Standards, Bulletins and other technical publications

are designed to serve the public interest through eliminating misunderstandings between

manufacturers and purchasers, facilitating interchangeability and improvement of products, and

assisting the purchaser in selecting and obtaining with minimum delay the proper product for his

particular need. Existence of such Standards, Bulletins and other technical publications shall not

in any respect preclude any member or nonmember of the Consumer Technology Association

from manufacturing or selling products not conforming to such Standards, Bulletins or other

technical publications, nor shall the existence of such Standards, Bulletins and other technical

publications preclude their voluntary use by those other than Consumer Technology Association

members, whether the standard is to be used either domestically or internationally.

Standards, Bulletins and other technical publications are adopted by the Consumer Technology

Association in accordance with the American National Standards Institute (ANSI) patent policy.

By such action, the Consumer Technology Association does not assume any liability to any patent

owner, nor does it assume any obligation whatever to parties adopting the Standard, Bulletin or

other technical publication.

This document does not purport to address all safety problems associated with its use or all

applicable regulatory requirements. It is the responsibility of the user of this document to

establish appropriate safety and health practices and to determine the applicability of regulatory

limitations before its use.

This document is copyrighted by the Consumer Technology Association (CTA)™ and may not be

reproduced, in whole or part, without written permission. Federal copyright law prohibits

unauthorized reproduction of this document by any means. Organizations may obtain permission

to reproduce a limited number of copies by entering into a license agreement. Requests to

reproduce text, data, charts, figures or other material should be made to the Consumer

Technology Association (CTA)™.

(Formulated under the cognizance of the CTA R4 Video Systems Committee.)

Published by

CONSUMER TECHNOLOGY ASSOCIATION 2020

Technology & Standards Department

www.cta.tech

CTA-861-H

TABLE OF CONTENTS

1 Scope ......................................................................................................................... 1

2 General ...................................................................................................................... 2

References ................................................................................................................ 2

2.1.1 Normative References ........................................................................................... 2

2.1.1.1 Normative Reference List ................................................................................... 2

2.1.2 Informative References ......................................................................................... 6

2.1.2.1 Informative Document List................................................................................. 6

Definitions ................................................................................................................. 9

Symbols and Abbreviations .................................................................................... 15

Compliance Notation .............................................................................................. 19

Hexadecimal Notation ............................................................................................ 19

HxV Video Timing Notation ..................................................................................... 19

Bit Naming Conventions ......................................................................................... 19

ASCII Codes, Characters & Strings .......................................................................... 19

3 Overview ................................................................................................................. 21

General Video Format Requirements for Sources .................................................. 21

General Video Format Requirements for Sinks ...................................................... 22

4 Video Formats and Waveform Timings .................................................................. 23

Aspect Ratio ............................................................................................................ 38

Frame Rate Relationships ....................................................................................... 43

5 Color Encoding, Sampling, & Conversion ................................................................ 44

Default Encoding Parameters ................................................................................. 44

Color Component Samples ..................................................................................... 45

5.2.1 RGB Conversion Matrices .................................................................................... 45

5.2.2 Sample Lattice ..................................................................................................... 46

Transfer Characteristic (e.g., gamma correction) ................................................... 46

Color Coding & Quantization .................................................................................. 47

6 Auxiliary Information Carried from Source to Sink ................................................. 49

CTA-861-H

Vendor-Specific InfoFrames .................................................................................... 50

6.1.1 Multiple VSIF Handling ........................................................................................ 51

Auxiliary Video Information (AVI) InfoFrame ......................................................... 53

Format of Version 1 AVI InfoFrame ........................................................................ 53

Format of Version 2, 3, & 4 AVI InfoFrames ........................................................... 53

6.4.1 Video Format, Picture Aspect Ratio and Pixel Repetition ................................... 56

6.4.2 Color Component Sample Format and Colorimetry ............................................ 63

6.4.3 Quantization Range ............................................................................................. 67

6.4.4 Active Format and Bar Data ................................................................................ 69

6.4.5 Overscan/Underscan, Scaling and Picture Content............................................. 74

Source Product Description (SPD) InfoFrame ......................................................... 77

Audio InfoFrame ..................................................................................................... 78

6.6.1 Audio Identification Information ......................................................................... 81

6.6.2 Speaker Mapping and Down-mix Information .................................................... 84

6.6.3 Delivery According to the Speaker Mask (Data Byte 4 = 0xFE) ........................... 91

6.6.4 Delivery by Channel Index (Data Byte 4 = 0xFF) .................................................. 92

6.6.5 Additional Audio InfoFrame Information ............................................................ 92

MPEG Source InfoFrame ......................................................................................... 92

NTSC VBI InfoFrame ................................................................................................ 94

Dynamic Range and Mastering InfoFrame ............................................................. 94

6.9.1 Static Metadata Type 1 ........................................................................................ 96

Extended InfoFrame ............................................................................................ 99

6.10.1 HDR Dynamic Metadata Extended InfoFrame ............................................... 100

6.10.2 Graphics Overlay Flag Extended InfoFrame ................................................... 102

7 EDID Data Structure .............................................................................................. 103

Use of CTA Extensions ........................................................................................... 103

Describing Video Formats in EDID ........................................................................ 104

7.2.1 Use of EDID Detailed Timing Descriptors .......................................................... 105

7.2.2 Source Requirements and Recommendations .................................................. 107

CTA Extension ....................................................................................................... 108

7.3.1 CTA Extension Version 1 .................................................................................... 109

CTA-861-H

iii

7.3.2 CTA Extension Version 2 .................................................................................... 110

7.3.3 CTA Extension Version 3 .................................................................................... 110

CTA Data Block Collection ..................................................................................... 112

CTA Data Blocks .................................................................................................... 116

7.5.1 Video Data Block ................................................................................................ 116

7.5.2 Audio Data Block ............................................................................................... 118

7.5.3 Speaker Allocation Data Block ........................................................................... 122

7.5.4 Vendor-Specific Data Block ............................................................................... 123

7.5.5 Colorimetry Data Block ...................................................................................... 123

7.5.6 Video Capability Data Block ............................................................................... 124

7.5.7 Vendor-Specific Video Data Block ..................................................................... 127

7.5.8 Vendor-Specific Audio Data Block ..................................................................... 128

7.5.9 InfoFrame Data Block ........................................................................................ 128

7.5.10 YC

4:2:0 Video Data Block ......................................................................... 130

7.5.11 YC

4:2:0 Capability Map Data Block .......................................................... 131

7.5.12 Video Format Preference Data Block ............................................................. 132

7.5.13 HDR Static Metadata Data Block .................................................................... 133

7.5.14 HDR Dynamic Metadata Data Block ............................................................... 135

7.5.15 Room Configuration Data Block ..................................................................... 138

7.5.16 Speaker Location Data Block .......................................................................... 140

7.5.16.1 Room Coordinate System ........................................................................... 142

7.5.17 DisplayID Video Timing Data Blocks ............................................................... 144

7.5.17.1 DisplayID Type VII Video Timing Data Block ............................................... 144

7.5.17.2 DisplayID Type VIII Video Timing Data Block .............................................. 146

7.5.17.3 DisplayID Type X Video Timing Data Block ................................................. 147

7.5.17.4 DisplayID Video Timings Data Blocks and Pixel Encodings ......................... 149

Multiple Instances of Data Blocks ......................................................................... 151

Annex A Baseline Example Edid And Detailed Timing Descriptors (Informative) .......... 153

Background ........................................................................................................... 153

EDID Tables ........................................................................................................... 153

A.2.1 EDID Table Construction .................................................................................... 154

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