Data processing device, data storage device, data processing method, and program providing medium for storing content protected under high security management
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 21, 2004
Grant Date -
Jun 27, 2002
app pub date -
Oct 18, 2001
filing date -
Oct 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data processing device includes a memory interface (I/F) unit and a control unit. When accessing a data storage device such as a memory card having a built-in flash memory, the data processing device sets a block permission table (BPT) as an access permission table in the memory I/F unit, whereby only when the BPT permits a process to be executed does the memory I/F unit access the storage device, and the memory I/F unit does not execute a process when it is out of an allowable range. Regardless of a process type performed by the control unit and a command type, the memory I/F unit always accesses the storage device in accordance with the BPT set in the memory I/F unit. This effectively prevents the rewriting of data in rewrite-prevented recording media.
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- Non-US Classification not provided for expired patents
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