Memory card
AssigneeRenesas Technology Corp.
InventorsMizushima Nagamasa, Takashi Tsunehiro, Motoyasu Tsunoda, Toshio Tanaka, Kunihiro Katayama, Koichi Kimura, Tomihisa Hatano
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Abstract
It is an object of the invention to improve security of a storage apparatus. The invention has: a flash memory chip; an IC card chip which can execute a security process (encryption, decryption, etc.); and a controller chip for controlling read/write of data from/into the flash memory chip and the IC card chip in response to a request from a host.
Claims19
A memory card having a flash memory chip which can store data and a controller for controlling read/write of said data from/into said flash memory chip, comprising:
- an IC chip which has previously been authenticated by Authentication Facilities,
- wherein said controller can control said IC chip.
A storage apparatus for storing data, comprising:
- a memory which can store said data;
- a processing apparatus which can store said data and can execute a security process of said data;
- and a controller for controlling said memory and said processing apparatus on the basis of a command from an external host apparatus.
A memory card comprising:
- a flash memory chip which can store data from an external host apparatus;
- a controller for controlling read/write of said data from/into said flash memory chip;
- and external terminals for connecting said controller and said host apparatus, wherein:
- said memory card has an IC chip for processing the data from said host apparatus and storing said data;
- a ground terminal of said IC chip is connected to said external terminals;
- and
- a power input terminal, a reset input terminal, a clock input terminal, and a data input/output terminal of said IC chip are connected to said controller.
A storage apparatus comprising:
- a memory which can store data from an external host apparatus;
- and a controller for controlling an access to said memory in accordance with a request from said host apparatus, wherein:
- said storage apparatus has a processing apparatus for processing the data from said host apparatus and storing said data;
- when a power supply to said processing apparatus is stopped, said controller instructs to start the power supply to said processing apparatus, thereafter, instructs to start a supply of drive clocks for driving said processing apparatus to said processing apparatus, thereafter, sets a data input/output terminal of said processing apparatus to a pulled-up state, and thereafter, sets a reset signal which is supplied to said processing apparatus to a high-level state;
- and
- when the power source is supplied to said processing apparatus, said controller stops the supply of said drive clocks to said processing apparatus, sets said reset signal to a low-level state, sets said data input/output terminal to the pulled-up state, and sets the reset signal to the high level.
Dependencies are inferred from the claim text.