Video controller IC with built-in test circuit and method of testing
US5410547A · kind A · utility
21Cited by
12References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Jun 17, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/83
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A video controller integrated circuit is provided with an on-chip test data generator within the integrated circuit for emulating an external memory for testing purposes. When activated, the test data generator generates a pseudo-random data stream which is fed to the data input of a video memory controller within the integrated circuit. A signature generator, also within the integrated circuit generates a characteristic signature from the data stream which is compared to a characteristic signature from a known good integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.