Test system emulator
US5951704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Feb 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31917
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An emulator software in a semiconductor test system for emulating hardware in the semiconductor test system as well as a semiconductor device to be tested without need to use an actual test system hardware. The emulator software includes an emulator unit which emulates a function of each hardware unit of the test system, a device emulator which emulates a function of a semiconductor device to be tested, a data collecting part for acquiring data from the emulator unit necessary for carrying out a test program, and a device test emulator which generates a test signal to be applied to the device emulator based on the acquired data and compares the resultant signal from the device emulator with the expected data and stores the comparison result therein. In the other aspect, the emulator is combined with the operating system of the semiconductor test system which is capable of easily modifying the software when there is a change or replacement of the hardware of the test system so that the transmission of the control data for the hardware and its operation or the development of the test program can be carried out without using the hardware of the test system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.