SMPTE 334M-2000: 视频信号中数据编码与传输标准

334M-2000

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SMPTE 334M-2000 是一项专门针对电视信号传输标准，它定义了一种编码方法，用于在符合SMPTE 292M或ANSI/SMPTE 259M规范的比特串行组件电视信号的垂直辅助数据空间中承载数据服务。这个标准适用于公共广播服务，如新闻、广告等，同时也包括广播机构内部的控制和通信需求。该标准的核心在于它并不局限于比特串行接口，事实上，它也可以被应用于组件数字视频信号的并行数字接口中，提供了灵活性。这意味着，无论是传统的串行传输还是现代的并行传输方式，都可以利用SMPTE 334M-2000进行高效的数据传输。标准的1.1节明确了其适用范围，规定了编码技术，确保了数据服务能够在电视信号的特定区域稳定可靠地传输，同时保持与现有标准的兼容性。值得注意的是，该标准鼓励用户考虑最新版本的引用标准，如ANSI/SMPTE 125M-1995，它规定了4:2:2比例的组件视频信号的比特平行数字接口，以及ANSI/SMPTE 259M-1997，涉及10位4:2:2组件信号和4fsc复合数字信号的串行数字接口。此外，SMPTE 334M-2000还支持数据以KLV（Keyed-Value Length）格式根据SMPTE 336M传输，或者通过其他形式进行传递，这为数据的封装和解封装提供了多种选择，以便适应不同的应用需求和技术环境。 SMPTE 334M-2000是电视信号处理领域的一个重要技术规范，对于电视信号的数字化、广播和传输具有深远影响，它的实施有助于提升电视信号的质量和效率，推动行业的技术进步。

1 Scope

This standard defines a method of coding which

allows data services to be carried in the vertical ancil-

lary data space of a bit-serial component television

signal conforming with SMPTE 292M or ANSI/SMPTE

259M.

This includes data broadcast services intended for the

public as well as broadcaster internal control and

communications.

Despite the reference to the bit-serial interface,

nothing in this specification precludes its use in a

parallel digital interface for component digital video

signals.

The data described in this standard may also be

transported in KLV format according to SMPTE 336M,

or via other means.

2 Normative references

The following standards contain provisions which,

through reference in this text, constitute 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 edition of the standards

indicated below.

ANSI/SMPTE 125M-1995, Television — Component

Video Signal 4:2:2 — Bit-Parallel Digital Interface

ANSI/SMPTE 259M-1997, Television — 10-Bit 4:2:2

Component and 4

Composite Digital Signals —

Serial Digital Interface

SMPTE 291M-1998, Television — Ancillary Data

Packet and Space Formatting

SMPTE 292M-1998, Television — Bit-Serial Digital

Interface for High-Definition Television Systems

ANSI/EIA-608-1994, Recommended Practice for Line

21 Data Service

EIA-708-B, Digital Television Closed-Captioning

(DTVCC)

EIA-766-1998, U.S. Region Rating Table (RRT) and

Content Advisory Descriptor for Transport of Con-

tent Advisory Information Using ATSC A/65 Program

and System Information Protocol (PSIP)

3 Location of vertical ancillary data

The data packets are located in the active line portion

of one or more lines in the vertical ancillary space.

Data may be located in any lines in the area from the

second line after the line specified for switching to the

last line before active video, inclusively.

Individual data services are not assigned to any spe-

cific data lines; receiving equipment should identify

and select services on the basis of their ANC DID and

SDID fields.

Because ANC data may be located in the lines imme-

diately preceding active video, manufacturers of video

compression equipment should ensure that these

data bits are not included in video compression cal-

culations.

The chrominance (C

) and luminance (Y) data are

carried in two separate streams within the SMPTE

292M signal with their own ANC data flags and CRCs.

Approved

May 12, 2000

MOTION PICTURE AND TELEVISION ENGINEERS

595 W. Hartsdale Ave., White Plains, NY 10607

(914) 761-1100

for Television —

Vertical Ancillary Data Mapping

for Bit-Serial Interface

SMPTE 334M-2000

SMPTE STANDARD

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SMPTE 334M-2000: 视频信号中数据编码与传输标准

SMPTE标准原版打包

SMPTE标准（33个文件）

SMPTE 314M, Revision of SMPTE 314M-1999

SMPTE 352M-2001

SMPTE 424M-2006

SMPTE 274M-2003

SMPTE 272M-2004

smpte 274M - 2003

SMPTE292M-1998

SMPTE 299M-2004

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