Robert D. Patrie

Built-in self test method for measuring clock to out delays

Application-specific testing methods for programmable logic devices

Method and system for measuring signal propagation delays using ring oscillators

Methods and circuits for testing programmable logic

Built-in self test using pulse generators

System with downstream set or clear for measuring signal propagation delays on integrated circuits

Fault emulation testing of programmable logic devices

Method and system for measuring signal propagation delays using the duty cycle of a ring oscillator

Application-specific methods useful for testing look up tables in programmable logic devices

Methods of utilizing programmable logic devices having localized defects in application-specific products