Access restriction to circuit designs
US5978476A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computerized system restricts full revelation of certain information to a user, while also performing limited processing of the information for the user for evaluation. The information is encrypted and therefore may be widely distributed without fear of revelation. An authorization code from the user specifies the type(s) of processing that are permitted, wherein different types of processing produce different type(s) of output that reveal to different degrees the information. The type(s) of output include output which represent more than mere reproduction of the information. A particularly appropriate implementation of the present invention is in the area of Electronic Design Automation (EDA) for logic design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.