Peripheral card security and configuration interface
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United States of America Patent
Stats
-
Jul 27, 1999
Grant Date -
N/A
app pub date -
Apr 29, 1997
filing date -
Apr 30, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Authentication mechanism for interactive home entertainment systems using plug-in cards which do contain software as well as cards which do not contain software. A security bit stream is generated by circuitry on the card and checked by the base system while the system is operating, but only a single signal line of the interface is used for the bit stream. The card also includes a ROM which contains data to be downloaded to the base system. The ROM data is downloaded to the base system via the same signal line of the interface as the serial bit stream. The signal line is used for ROM data download while the base system asserts a 'reset' signal, and is used to carry the serial bit stream for authentication purposes whenever the reset signal is negated.
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