Patent ID: 7752460
Filing Date: 2010-07-06
Classification: G06F,Y04S

Abstract:
1. A general-purpose computer having a central processing unit configured to decode data stored in an internal storage mechanism as instructed by a program stored in said internal storage mechanism, comprising: a loading mechanism, which is integrally arranged on a case of said general-purpose computer, for detachably accommodating an external storage card; a decoding mechanism configured to decode data read from said external storage card; a reproduction mechanism configured to reproduce decoded data decoded by said decoding mechanism; a power controller configured to supply power to said general-purpose computer, wherein said power controller supplies power to said decoding mechanism and said reproduction mechanism even if power of said central processing unit is turned off, and said loading mechanism is configured to read said decoded data based on commands from said central processing unit when said general-purpose computer is in an active state and said loading mechanism is configured to read said decoded data based on commands from an external storage card control mechanism integrally arranged on said case of said general-purpose computer, without control of a central processing unit, when said general-purpose computer is in an inactive state; a cross-authentication mechanism configured to cross-authenticate said external storage card through said loading mechanism; and a control mechanism configured to supply copyrighted data read from said external storage card to said reproducing mechanism upon successful cross-authentication by said cross-authentication mechanism even if power of said central processing unit is turned off, wherein said power controller supplies power to said cross-authentication mechanism and said control mechanism even if power of said central processing unit is turned off and when said external storage card has been cross-authenticated with said general-purpose computer, said external storage card control mechanism plays copyrighted music data stored on said external storage card even if power of said central processing unit is turned off, and said encrypted data is encrypted by a Data Encryption Standard encryption/decryption unit included in said external storage card.