Broadcast transmission device and operating method thereof, and broadcast reception device and operating method thereof

Abstract

A digital broadcast receiver for receiving a broadcast signal includes a tuner configured to receive the broadcast signal carrying a transport packet for real-time delivery, wherein the transport packet for real-time delivery consists of at least one packet payload and at least one packet header, and a processor configured to extract the at least one packet header, wherein a first extension header is included in the at least one packet header, the first extension header includes timestamp information having a 64-bit format depending on a specific value also included in the first extension header, a second extension header is included in the at least one packet header, and the second extension header includes first information for SCT (sender current time) of a broadcast sender and second information for ERT (expected residual time).

What is claimed is: 
     
         1 . A digital broadcast receiver for receiving a broadcast signal, the digital broadcast receiver comprising:
 a tuner configured to receive the broadcast signal carrying a transport packet for real-time delivery, wherein the transport packet for real-time delivery consists of at least one packet payload and at least one packet header; and   a processor configured to extract the at least one packet header,   wherein a first extension header is included in the at least one packet header, further the first extension header includes timestamp information having a 64-bit format depending on a specific value also included in the first extension header, and   wherein a second extension header is included in the at least one packet header, further the second extension header includes first information for SCT (sender current time) of a broadcast sender and second information for ERT (expected residual time).   
     
     
         2 . The digital broadcast receiver of  claim 1 , wherein the first extension header is different from the second extension header. 
     
     
         3 . The digital broadcast receiver of  claim 2 , wherein the processor obtains information about a structure type of the transport packet for real-time delivery from the at least one packet header. 
     
     
         4 . The digital broadcast receiver of  claim 3 , wherein the structure type of the transport packet for real-time delivery comprises a first structure type including a packet header, a header extension, a payload identifier, and object data, a second structure type only including a packet header and a header extension, and a third structure type only including a packet header, a header extension, and object data. 
     
     
         5 . The digital broadcast receiver of  claim 4 , wherein the first structure type further comprises offset information of object data. 
     
     
         6 . A method for receiving a broadcast signal in a digital broadcast receiver, the method comprising:
 receiving the broadcast signal carrying a transport packet for real-time delivery, wherein the transport packet for real-time delivery consists of at least one packet payload and at least one packet header; and   extracting the at least one packet header,   wherein a first extension header is included in the at least one packet header, further the first extension header includes timestamp information having a 64-bit format depending on a specific value also included in the first extension header, and   wherein a second extension header is included in the at least one packet header, further the second extension header includes first information for SCT (sender current time) of a broadcast sender and second information for ERT (expected residual time).   
     
     
         7 . The method of  claim 6 , wherein the first extension header is different from the second extension header. 
     
     
         8 . The method of  claim 7 , further comprising:
 obtaining information about a structure type of the transport packet for real-time delivery from the at least one packet header.   
     
     
         9 . The method of  claim 8 , wherein the structure type of the transport packet for real-time delivery comprises a first structure type including a packet header, a header extension, a payload identifier, and object data, a second structure type only including a packet header and a header extension, and a third structure type only including a packet header, a header extension, and object data. 
     
     
         10 . The method of  claim 9 , wherein the first structure type further comprises offset information of object data. 
     
     
         11 . A method for transmitting a broadcast signal in a digital broadcast transmitter, the method comprising:
 generating a transport packet for real-time delivery,   wherein the transport packet for real-time delivery consists of at least one packet payload and at least one packet header,   wherein a first extension header is included in the at least one packet header, further the first extension header includes timestamp information having a 64-bit format depending on a specific value also included in the first extension header, and   wherein a second extension header is included in the at least one packet header, further the second extension header includes first information for SCT (sender current time) of a broadcast sender and second information for ERT (expected residual time); and   transmitting the broadcast signal carrying the transport packet for real-time delivery.   
     
     
         12 . The method of  claim 11 , wherein the first extension header is different from the second extension header. 
     
     
         13 . The method of  claim 12 , wherein a structure type of the transport packet for real-time delivery comprises a first structure type including a packet header, a header extension, a payload identifier, and object data, a second structure type only including a packet header and a header extension, and a third structure type only including a packet header, a header extension, and object data. 
     
     
         14 . The method of  claim 14 , wherein the first structure type further comprises offset information of object data. 
     
     
         15 . A digital broadcast transmitter for transmitting a broadcast signal, the digital broadcast transmitter comprising:
 a processor configured to generate a transport packet for real-time delivery,   wherein the transport packet for real-time delivery consists of at least one packet payload and at least one packet header,   wherein a first extension header is included in the at least one packet header, further the first extension header includes timestamp information having a 64-bit format depending on a specific value also included in the first extension header, and   wherein a second extension header is included in the at least one packet header, further the second extension header includes first information for SCT (sender current time) of a broadcast sender and second information for ERT (expected residual time); and   a transmitting antenna configured to transmit the broadcast signal carrying the transport packet for real-time delivery.   
     
     
         16 . The digital broadcast transmitter of  claim 15 , wherein the first extension header is different from the second extension header. 
     
     
         17 . The digital broadcast transmitter of  claim 16 , wherein a structure type of the transport packet for real-time delivery comprises a first structure type including a packet header, a header extension, a payload identifier, and object data, a second structure type only including a packet header and a header extension, and a third structure type only including a packet header, a header extension, and object data. 
     
     
         18 . The digital broadcast transmitter of  claim 17 , wherein the first structure type further comprises offset information of object data.