Data protection system and game machine
First Claim
1. A data protection system which is installed in a game machine together with a rewritable storage device and which protects the data stored in said storage device from illegal changes, said data protection system comprising:
- a command receiving unit which receives a command that requests data processing for data stored in said storage device;
a command storage unit in which one or more valid commands are stored;
a judgment unit which judges whether a command received by said command receiving unit matches one of said valid commands; and
a data processing unit which instructs said storage device to perform data processing requested by said received command when said judgment unit has judged that said received command matches one of said valid commands, and which inhibits said storage device from performing the data processing requested by the received command when said judgment unit has judged that said received command does not match any of said valid commands.
2 Assignments
0 Petitions
Accused Products
Abstract
A data protection system is disclosed which is installed in a game machine together with a rewritable storage device, and protects the data stored in the storage device from illegal changes. A command receiving unit receives from the outside a command requesting data processing for the storage device. The received command is checked by a judgment unit against each valid command stored in a command storage unit. When the received command matches one of the valid commands, a data processing unit instructs the storage device to perform the data processing requested by the received command. When the received command does not match any of the valid commands, the data processing unit does not instruct the storage device to perform the data processing requested by the received command.
14 Citations
11 Claims
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1. A data protection system which is installed in a game machine together with a rewritable storage device and which protects the data stored in said storage device from illegal changes, said data protection system comprising:
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a command receiving unit which receives a command that requests data processing for data stored in said storage device;
a command storage unit in which one or more valid commands are stored;
a judgment unit which judges whether a command received by said command receiving unit matches one of said valid commands; and
a data processing unit which instructs said storage device to perform data processing requested by said received command when said judgment unit has judged that said received command matches one of said valid commands, and which inhibits said storage device from performing the data processing requested by the received command when said judgment unit has judged that said received command does not match any of said valid commands. - View Dependent Claims (2, 3, 4, 5)
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6. A game machine, comprising:
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a rewritable storage device;
a game control unit which controls a game by using data stored in said storage device; and
a data protection system;
said data protection system comprising;
a command receiving unit which receives a command from said game control unit that requests data processing for said data stored in said storage device;
a command storage unit in which one or more valid commands are stored;
a judgment unit which judges whether a command received by said command receiving unit matches one of said valid commands; and
a data processing unit which instructs said storage device to perform data processing requested by said received command when said judgment unit has judged that said received command matches one of said valid commands, and which inhibits said storage device from performing the data processing requested by the received command when said judgment unit has judged that said received command does not match any of said valid commands. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification