SMPTE RP 2007:2007

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SMPTE Recommended Practice – Closed-Caption CDP and “Grand Alliance”? Serial Interfaces for DTV

Published By	Publication Date	Number of Pages
SMPTE	2007-07-27	7

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Categories: 33.160.01 - Audio, video and audiovisual systems in general, 33.170 - Television and radio broadcasting, SMPTE

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Description

Abtract:

This document defines two serial interfaces which may be used to convey closed captioning streams. — The CDP Interface carries the CEA-708/SMPTE 334–2 Caption Distribution Packet (CDP). This is principally intended for use in cases where there is a desire to provide some or all of the following information for downstream use: caption data; caption service descriptors; and time codes. In one typical application, a DTVCC caption server could use this interface to send CDPs to a 334M VANC encoder. — SMPTE 333M specifies an interface that is widely used for providing caption data and service information to ATSC emission encoders. The older Grand Alliance interface can also be used for this same purpose. It is included here as Annex B to document its use in this application.

Additional information

Published Code	SMPTE
Published By	Society of Motion Picture and Television Engineers
Publication Date	2007-07-27
Pages Count	7
Language	English
Descriptors	Interface, Subtitle
File Size	102.4 KB
ISBN	978-1-61482-247-9
ICS Codes	33.160.01 - Audio, video and audiovisual systems in general 33.170 - Television and radio broadcasting

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SMPTE RP 2007:2007

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