Data terminal device

Abstract

A cellular phone in the form of a shell downloads and reproduces encrypted content data distributed from a distribution server. The cellular phone includes a detection unit detecting whether its casing in the form of the shell is open/closed. If with the cellular phone currently downloading or reproducing encrypted content data its casing in the form of the shell is closed, a controller controls a power supply unit to supply power required for completing the download process or the reproduction process. Thus if the casing is closed the cellular phone still can complete the download or reproduction process. Thus with the casing having been closed the cellular phone can download or reproduce data.

1 . A data terminal device accommodated in a casing, comprising: 
 a detection unit detecting whether said casing is open/closed; and    a control unit supplying power required for downloading content data, even if said detection unit detects that said casing is closed after said downloading said content data has started.    
     
     
         2 . The data terminal device of  claim 1 , wherein when the data terminal device with said casing closed completes said downloading said content data, said control unit for example stops supplying said power and controls a standby mode function of various components internal to the data terminal device to shift the data terminal device to a low power consumption mode.  
     
     
         3 . A data terminal device accommodated in a casing, comprising: 
 a detection unit detecting whether said casing is open/closed; and    a control unit continuing downloading content data, even if said detection unit detects that said casing is closed after said downloading said content data has started.    
     
     
         4 . The data terminal device accommodated in a casing, comprising: 
 a detection unit detecting whether said casing is open/closed; and    a control unit supplying power required for reproducing content data, even if said detection unit detects that said casing is closed after said reproducing said content data has started.    
     
     
         5 . The data terminal device of  claim 4 , wherein when the data terminal device with said casing closed completes said reproducing said content data, said control unit for example stops supplying said power and controls a standby mode function of various components internal to the data terminal device to shift the data terminal device to a low power consumption mode.  
     
     
         6 . A data terminal device accommodated in a casing, comprising: 
 a detection unit detecting whether said casing is open/closed; and    a control unit continuing reproducing content data, even if said detection unit detects that said casing is closed after said reproducing said content data has started.