TUNNELING AND SIGNALING OF CONTENT IN LEGACY FORMATS

摘要

Broadcast services and other transmissions may conform to multiple types of protocols. Accordingly, a broadcast system may tunnel broadcasts or transmissions of a first protocol in a transport stream conforming to a second protocol. Each of the tunneled streams may be multicast together and may correspond to a separate and different physical layer pipe. The types of protocols and physical layer pipes carried in the transport stream may be defined in a pre-signaling section and/or post-signaling section of the transport stream. Common physical layer pipes may be generated and included in the transport stream to carry information and data common to multiple broadcast services or transmissions such as program specific information or service information.