Method and circuit for providing copy protection in an application-specific integrated circuit
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United States of America Patent
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-
Mar 18, 2003
Issued Date -
N/A
app pub date -
May 11, 2001
filing date -
Dec 6, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for preventing illicit copying of an application specific integrated circuit (ASIC). The ASIC is defined by a net list which includes a timer circuit for disabling the ASIC. The timer circuit includes a plurality of stages which are distributed in different cores of the ASIC to inhibit detection and removal of the circuit. The timer times out after a period which is set to permit evaluation of the ASIC design. Following the time out period, further use of the ASIC design is inhibited.
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