Transmitting method

Abstract

A transmitting method for transmitting encoded data obtained by hierarchically encoding a video image, includes: a generating step of generating an encoded stream including a packet which is obtained by packetizing the encoded data and to which at least a different packet ID has been allocated according to a layer level of the encoded data, and information indicating an association relationship between the packet ID and the layer level; and a transmitting step of transmitting the generated encoded stream, and the generated information indicating the association relationship. Thus, there is provided the encoded data transmitting method which allows a reception side to easily select encoded data which is hierarchically encoded.

What is claimed is: 
     
         1 . A transmitting method comprising:
 performing scalable coding on first pictures of a base layer and second pictures of an enhancement layer, the first pictures being independently decodable, the second pictures being decodable together with the first pictures;   transmitting the first pictures encoded via a first channel; and   transmitting the second pictures encoded via a second channel different from the first channel.   
     
     
         2 . The transmitting method according to  claim 1 , further comprising:
 transmitting program information indicating a type of the scalable coding, the type being selected from among types including temporal scalability and spatial scalability.   
     
     
         3 . The transmitting method according to  claim 1 , wherein
 the first channel is physically different from the second channel.   
     
     
         4 . A transmitting device comprising:
 a processor configured to perform scalable coding on first pictures of a base layer and second pictures of an enhancement layer, the first pictures being independently decodable, the second pictures being decodable together with the first pictures; and   a transmitter coupled to the processor and configured to:
 transmit the first pictures encoded via a first channel; and 
 transmit the second pictures encoded via a second channel different from the first channel. 
   
     
     
         5 . A receiving device comprising:
 a receiver configured to:
 receive first encoded pictures of a base layer via a first channel, the first encoded pictures being independently decodable; and 
 receive second encoded pictures of an enhancement layer via a second channel different from the first channel, the second encoded pictures being decodable together with the first encoded pictures; and 
   a processor coupled to the receiver and configured to perform scalable decoding on the first encoded pictures and the second encoded pictures.