Method and apparatus for signaling transmission code set in data broadcasting

Abstract

A method of and an apparatus are provided for signaling a transmission code set in data broadcasting. A client using the transmission code set signaling method includes a demultiplexer demultiplexing a packetized elementary stream (PES) packet corresponding to a program selected by a user from the broadcasting stream received by the system interface, an image decoder decoding the demultiplexed PES for images, a sound decoder decoding the demultiplexed PES for sound, and a CPU fetching information about a transmission code set of a character string used in an object carousel message from the demultiplexed message PES and decoding the character string used in the object carousel message based on the fetched information about the transmission code set.

1 . A client using a transmission code set signaling method in a data broadcasting system using an object carousel, the client comprising: 
 a demultiplexer which demultiplexes a packetized elementary stream (PES) packet corresponding to a program selected from a broadcasting stream broadcast by a server;    an image decoder which decodes the demultiplexed PES for images;    a sound decoder which decodes the demultiplexed PES for sound; and    a processing unit which retrieves information regarding a transmission code set of a character string used in an object carousel message from the demultiplexed message PES, and decodes the character string used in the object carousel message based on the retrieved information regarding the transmission code set.    
   
   
       2 . The client of  claim 1 , wherein the character string is a character string following a Common Object Request Broker Architecture (CORBA) string, which is defined in the CORBA/IIOP 2.1 specification.  
   
   
       3 . The client of  claim 1 , wherein the message including the information regarding the transmission code set is a BIOP::ServiceGateway message.  
   
   
       4 . The client of  claim 1 , wherein the information about the transmission code set is represented by using a General Inter ORB Protocol (GIOP) code set service context of the CORBA/IIOP 2.1 specification.  
   
   
       5 . The client of  claim 1 , wherein the transmission code set i is UTF-8 transmission code set.  
   
   
       6 . A server using a transmission code set signaling method in a data broadcasting system using an object carousel, the server comprising: 
 an image encoder which encodes image data and generates an image bit stream;    a sound encoder which encodes sound data and generates a sound bit stream;    a multiplexer which multiplexes the image bit stream and the sound bit stream and generates a transmission stream;    an RF signal process unit which modulates the transmission stream into a signal to be output; and    a processing unit which controls the image encoder, the sound encoder, the multiplexer, and the RF signal process unit, generates an object carousel message to be loaded on the transmission stream, and generates a message including information regarding the transmission code set of a character string used in the message.    
   
   
       7 . The server of  claim 6 , wherein the character string is a character string following a CORBA string, which is defined in the CORBA/IIOP 2.1 specification.  
   
   
       8 . The server of  claim 6 , wherein the message including the information regarding the transmission code set is a BIOP::ServiceGateway message.  
   
   
       9 . The server of  claim 6 , wherein the information regarding the transmission code set is represented by using a General Inter ORB Protocol (GIOP) code set service context of the CORBA/IIOP 2.1 specification.  
   
   
       10 . The server of  claim 6 , wherein the transmission code set is UTF-8 transmission code set.  
   
   
       11 . A system comprising: 
 a transmitting device which transmits by an object carousel an object including a data and a message to reference the data; and    a receiving device which receives the object and the message,    wherein the transmitting device comprises: 
 a control unit which inserts into the message information regarding an encoding system used to encode character strings within the message; and  
 a transmitting unit which transmits the object and the message, and  
   wherein the receiving device comprises: 
 a receiving unit which receives the object and the message; and  
 a control unit which decodes the character strings based on the information.  
   
   
   
       12 . The system of  claim 11 , wherein the object carousel is defined according ISO-IEC 13838-6.  
   
   
       13 . The system of  claim 11 , wherein the message is a broadcast inter ORB protocol (BIOP) message.  
   
   
       14 . The system of  claim 11 , wherein the character strings are common object request broker architecture (CORBA strings defined according to CORBA/IIOP 2.1.  
   
   
       15 . The system of  claim 11 , wherein the message is a BIOP::ServiceGateway message.  
   
   
       16 . The system of  claim 11 , wherein the information is expressed in a general inter ORB protocol (GIOP) codeset service context.  
   
   
       17 . The system of  claim 15 , wherein the information is included in a general inter ORB protocol (GIOP) codeset service context within the BIOP::ServiceGateway message.  
   
   
       18 . The system of  claim 11 , wherein the information indicates that the character strings are encoded based on either ISO 8859-1 or UTF-8.  
   
   
       19 . The system of  claim 11 , wherein the control unit of the receiving device decodes the character strings based on ISO 8859-1 if the encoding system is not explicitly described in the information.