Pattern test apparatus including a plurality of pattern generators
US4744047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1985 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Oct 31, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/281
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for testing printed wiring patterns for use in combination with an apparatus including a plurality of dedicated pattern generators for generating arcuate wiring patterns. In contrast to the conventional LSI pattern inspection effected with design data being inputted, the apparatus can inspect the pattern including curved portions peculiar to the printed wiring pattern. Although the conventional LSI inspection technique involves an impracticably increased amount of design data, the invention allows the test or inspection to be performed at a high speed with an improved reliability and can be applied to the inspection of any pattern including arcuate patterns. By inputting graphic data in conformance with the order for generating patterns, pattern generation can be accomplished not only through ordinary raster scan but also by other various scanning methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.