Transmission method, reception method, transmission apparatus, and reception apparatus

Abstract

A transmission method includes: generating one or more transfer frames that each store one or more streams used for content transfer; and transmitting the one or more generated frames through broadcast, each of the one or more streams storing one or more second transfer units, each of the one or more second transfer units storing one or more first transfer units, and each of the one or more first transfer units storing one or more Internet Protocol (IP) packets. In at least one stream among the one or more streams, each of the first transfer units positioned at a head contains reference clock information indicating time used for reproduction of the content.

1 - 8 . (canceled) 
     
     
         9 . A transmission method comprising:
 coding video content;   configuring one or more transfer units that each include the coded video content; and   transmitting the one or more transfer units as a transmission signal, the transmission signal including the one or more transfer units, the one or more transfer units including first control information and second control information,
 wherein the first control information includes a parameter used for the second control information, and the second control information is provided for each of the one or more transfer units, 
 wherein in at least one transfer unit among the one or more transfer units, the second control information of the transfer unit contains clock information, 
 wherein information indicating that the clock information is contained within the second control information of the transfer unit is stored in the first control information, and 
 wherein the clock information is transmitted cyclically. 
   
     
     
         10 . A reception method comprising:
 receiving a transmission signal, the transmission signal including one or more transfer units, the one or more transfer units including first control information and second control information;   decoding the coded video content; and   extracting clock information from at least one transfer unit among the one or more transfer units,   wherein the first control information includes a parameter used for the second control information, the second control information being provided for each of the one or more transfer units,   wherein in the at least one transfer unit among the one or more transfer units, the second control information of the transfer unit contains the clock information,   wherein information indicating that the clock information is contained within the second control information of the transfer unit is stored in the first control information, and   wherein the clock information is transmitted cyclically.   
     
     
         11 . A transmission apparatus comprising:
 coding circuitry which, in operation, codes video content;   configuration circuitry which, in operation, configures one or more transfer units that each include the coded video content; and   transmission circuitry which, in operation, transmits the one or more transfer units as a transmission signal, the transmission signal including the one or more transfer units, the one or more transfer units including first control information and second control information,   wherein the first control information includes a parameter used for the second control information, and the second control information is provided for each of the one or more transfer units,   wherein in at least one transfer unit among the one or more transfer units, the second control information of the transfer unit contains clock information,   wherein information indicating that the clock information is contained within the second control information of the transfer unit is stored in the first control information, and   wherein the clock information is transmitted cyclically.   
     
     
         12 . A reception apparatus comprising:
 reception circuitry which, in operation, receives a transmission signal, the transmission signal including one or more transfer units, the one or more transfer units including first control information and second control information;   decoding circuitry which, in operation, decodes the coded video content; and   extraction circuitry which, in operation, extracts clock information from at least one transfer unit among the one or more transfer units,   wherein the first control information includes a parameter used for the second control information, the second control information being provided for each of the one or more transfer units,   wherein in the at least one transfer unit among the one or more transfer units, the second control information of the transfer unit contains the clock information,   wherein information indicating that the clock information is contained within the second control information of the transfer unit is stored in the first control information, and   wherein the clock information is transmitted cyclically.