DISPARITY DATA TRANSPORT IN UNANNOUNCED STANDARD CAPTION SERVICE

摘要

A method of a reception apparatus for processing closed caption data. The method includes receiving, by circuitry of the reception apparatus, audio/video (A/V) content and closed caption data for a first caption service and a second caption service. The closed caption data for the first caption service includes closed caption text and the closed caption data for the second caption service includes additional data. Caption service blocks are extracted from the closed caption data for both the first caption service and the second caption service when the first caption service is to be displayed with the A/V content. The additional data included in the closed caption data for the second caption service is parsed from the caption services blocks for the second caption service. Further, a presentation of the A/V content and the closed caption text is output by the circuitry for display to a user of the reception apparatus based on the additional data parsed from the caption service blocks for the second caption service.