Data transmission device, data transmission method, game device, and game system

Abstract

A game device ( 10 ) can transmit AV data of a game to a receiving terminal ( 20 ) by adaptively setting the communication protocol. The protocol setting is performed according to the scene state in the AV data and the propagation environment such as the transmission error rate. For example, by using UDP for a high real-time game scene and TCP for a low real-time game scene, it is possible to effectively transfer the AV data to the receiving terminal(20) without impairing the continuity of the game.

1 . A game device which transmits AV data of a game to a receiving terminal over a network, the game device comprising: 
 a processing unit which extracts instruction information preset in game data;    an analysis unit which determines a protocol to be used based on the extracted instruction information; and    a protocol setting unit which receives a result of the determination provided by the analysis unit to set a communication protocol for the AV data.    
   
   
       2 . A game device which transmits AV data of a game to a receiving terminal over a network, the game device comprising: 
 a processing unit which extracts instruction information preset in game data;    an analysis unit which determines the presence or absence of a low delay requirement for the AV data based on the extracted instruction information; and    a protocol setting unit which receives a result of the determination provided by the analysis unit to set a communication protocol for the AV data.    
   
   
       3 . The game device according to  claim 2 , wherein 
 the processing unit extracts a game title or a game genre set in the game data as instruction information; and    with reference to a table relating a game title to the presence or absence of a low delay requirement or a table relating a game genre to the presence or absence of a low delay requirement, the analysis unit determines the presence or absence of a low delay requirement for the AV data based on the game title or the game genre extracted by the processing unit.    
   
   
       4 . The game device according to  claim 2 , wherein 
 the processing unit extracts, from the game data, instruction information indicative of the presence or absence of a low delay requirement stored according to a game scene;    the analysis unit determines whether a scene requires a low delay based on the instruction information preset for each scene; and    the protocol setting unit receives a result of the determination provided by the analysis unit to set a communication protocol for each scene of the AV data.    
   
   
       5 . A game system comprising a receiving terminal, a game device which transmits AV data of a game to the receiving terminal over a network, and a game device controller controlled by a user, wherein the game device comprises: 
 a processing unit which extracts instruction information preset in game data;    an analysis unit which determines the presence or absence of a low delay requirement for the AV data based on the extracted instruction information; and    a protocol setting unit which receives a result of the determination provided by the analysis unit to set a communication protocol for the AV data.    
   
   
       6 . The game system according to  claim 5 , wherein 
 the communication protocol can be changed in response to an input from the controller.    
   
   
       7 . The game system according to  claim 5 , wherein 
 the processing unit extracts, as instruction information, a game title or a game genre preset in the game data; and    with reference to a table relating a game title to the presence or absence of a low delay requirement or a table relating a game genre to the presence or absence of a low delay requirement, the analysis unit determines the presence or absence of a low delay requirement for the AV data based on the game title or the game genre extracted by the processing unit.    
   
   
       8 . The game system according to  claim 6 , wherein 
 the processing unit extracts, as instruction information, a game title or a game genre preset in the game data; and    with reference to a table relating a game title to the presence or absence of a low delay requirement or a table relating a game genre to the presence or absence of a low delay requirement, the analysis unit determines the presence or absence of a low delay requirement for the AV data based on the game title or the game genre extracted by the processing unit.    
   
   
       9 . The game system according to  claim 5 , wherein 
 the processing unit extracts, from the game data, instruction information indicative of the presence or absence of a low delay requirement stored according to a game scene;    the analysis unit determines whether a scene requires a low delay based on the instruction information preset for each scene; and    the protocol setting unit receives a result of the determination provided by the analysis unit to set a communication protocol for each scene of the AV data.    
   
   
       10 . The game system according to  claim 6 , wherein 
 the processing unit extracts, from the game data, instruction information indicative of the presence or absence of a low delay requirement stored according to a game scene;    the analysis unit determines whether a scene requires a low delay based on the instruction information preset for each scene; and    the protocol setting unit receives a result of the determination provided by the analysis unit to set a communication protocol for each scene of the AV data.    
   
   
       11 . A game data transmission method for transmitting AV data of a game to a receiving terminal over a network, comprising 
 extracting preset instruction information from the game data;    determining the presence or absence of a low delay requirement for the AV data based on the extracted instruction information: and    receiving a result of the determination to set a communication protocol for the AV data.    
   
   
       12 . The game data transmission method according to  claim 11 , wherein 
 the extracting step extracts, as instruction information, a game title or a game genre preset in the game data; and    with reference to a table relating a game title to the presence or absence of a low delay requirement or a table relating a game genre to the presence or absence of a low delay requirement, the determining step determines the presence or absence of a low delay requirement for the AV data based on the game title or the game genre extracted.    
   
   
       13 . The game data transmission method according to  claim 12 , wherein 
 the extracting step extracts, from the game data, instruction information indicative of the presence or absence of a low delay requirement stored according to a game scene;    the determining step determines whether a scene requires a low delay based on the instruction information preset for each scene; and    the protocol setting step receives a result of the determination to set a communication protocol for each scene of the AV data.