| Patent Number |
Title Of Patent |
Date Issued |
| 7409621 |
On-chip jitter testing |
August 5, 2008 |
| On-chip jitter testing includes providing a clock signal to a circuit under test and delaying outputs from the circuit under test by predetermined delay values. For each delay value, a corresponding output from the circuit under test is compared with a reference signal derived from t |
| 7088091 |
Testing a multi-channel device |
August 8, 2006 |
| In one embodiment, a method includes routing first test data from a first channel of a device to a second channel of the device, and outputting the first test data from the second channel. The device, in one embodiment, may be a mixed signal device and the test data may be alternating cu |
| 6868534 |
Circuit modeling |
March 15, 2005 |
| Modeling a circuit includes producing a first behavioral model of a circuit based on a transistor model of the circuit. A second behavioral model is produced of a noise source coupled to the circuit based on the first behavioral model and based on a transistor model of the noise source. |
| 6836872 |
On-chip testing of integrated circuits |
December 28, 2004 |
| A method comprises inserting into a behavioral model of an integrated circuit component a corresponding built-in self-test structure from a library of built-in self-test structures that correspond to integrated circuit components and using the behavioral model to verify whether the i |
| 6777921 |
Analog filter with built-in self test |
August 17, 2004 |
| An analog filter in an integrated circuit is tested by placing the filter in a feedback loop. The filter is tested by determining whether the analog filter, while in the feedback loop, provides a signal that oscillates within a predetermined tolerance of an expected frequency. |
| 6670800 |
Timing variation measurements |
December 30, 2003 |
| Measuring timing variations in a periodic signal includes producing trigger signals in an integrated circuit in response an externally-generated periodic signal. First and second oscillation signals are generated in response to the trigger signals. A first count of the number of pulses i |
