scope:

This document is intended as a definition of ATV Closed Captioning and provides specifications and guidelines for caption service providers, ATVCC decoder and encoder manufacturers, ATV receiver manufacturers, and ATV signal processing equipment manufacturers. This specification includes the following:

• a description of the transport method of ATVCC data in the ATV signal

• a description of ATVCC specific data packets and structures

• a specification of how ATVCC information is to be processed

• a list of minimum implementation requirements for ATVCC receiver manufacturers

• a set of recommended practices for ATV encoder and decoder manufacturers