Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 3, 2006
Patent Application Number
09724734
Date Filed
November 28, 2000
Patent Citations Received
Patent Primary Examiner
Patent abstract
It is sometimes desirable to protect a design used in a PLD from being copied. If the design is stored in a different device from the PLD and read into the PLD through a bitstream, an unencrypted bitstream could be observed and copied as it is being loaded. According to the invention, a bitstream for configuring a PLD with an encrypted design includes unencrypted words for controlling loading of the configuration bitstream and encrypted words that actually specify the design.
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