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

Abstract

A transmission method includes: generating one or more frames for content transfer, each of the frames containing one or more second transfer units, each of the second transfer units being placed at a head within each of the frames and containing one or more first transfer units, each of the first transfer units containing one or more Internet Protocol (IP) packets, each of the first transfer units positioned at a head within each of the frames containing reference clock information indicating time used for reproduction of the content that uses the IP packets in a reception apparatus; and transmitting the one or more frames by broadcast.

1 - 7 . (canceled) 
     
     
         8 . A transmission method, comprising:
 generating frames, each frame including first control data, second control data, and a first transfer unit, the first transfer unit including one or more second transfer units, the first control data including first information indicating a start position of the one or more second transfer units within the first transfer unit, the second control data including second information indicating whether the first control data includes reference clock information or not, the first control data including the reference clock information when the second information indicates the first control data includes the reference clock information; and   transmitting the frames.   
     
     
         9 . The transmission apparatus method to  claim 8 , wherein
 the first transfer unit has a fixed-length, and   each of the one or more second transfer units has a variable length.   
     
     
         10 . The transmission method according to  claim 8 , wherein
 the first transfer unit is a slot,   each of the one or more second transfer units is a Type Length Value (TLV) packet,   the first control data is transmitted in a slot header, and   the second control data is transmitted in a Transmission and Multiplexing Configuration Control (TMCC) signal.   
     
     
         11 . The transmission method according to  claim 8 , wherein
 the reference clock information includes a current clock value used at a receiver to reproduce a reference clock signal.   
     
     
         12 . A transmission apparatus, comprising:
 a frame configurator that, in operation, generates frames, each frame including first control data, second control data, and a first transfer unit, the first transfer unit including one or more second transfer units, the first control data including first information indicating a start position of the one or more second transfer units within the first transfer unit, the second control data including second information indicating whether the first control data includes reference clock information or not, the first control data including the reference clock information when the second information indicates the first control data includes the reference clock information; and   a transmitter that, in operation, transmits the frames.   
     
     
         13 . The transmission apparatus according to  claim 12 , wherein
 the first transfer unit has a fixed-length, and   each of the one or more second transfer units has a variable length.   
     
     
         14 . The transmission apparatus according to  claim 12 , wherein
 the first transfer unit is a slot,   each of the second transfer units is a Type Length Value (TLV) packet,   the first control data is transmitted in a slot header, and   the second control data is transmitted in a Transmission and Multiplexing Configuration Control (TMCC) signal.   
     
     
         15 . The transmission apparatus according to  claim 12 , wherein
 the reference clock information includes a current clock value used at a receiver to reproduce a reference clock signal.