Method and arrangement for the comparison of technical...

Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design

Reexamination Certificate

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C716S030000

Reexamination Certificate

active

07082586

ABSTRACT:
The invention permits a comparison of two technical systems, which according to conventional opinion is not possible to carry out, based on a substantially simpler, technically achievable comparison, in which part systems of one or both systems are specifically replaced. The replacements are performed in a controlled manner by monitoring a replacement condition with constraints. The monitoring of the replacement condition and the generation and monitoring of the necessary constraints occur automatically. A comparison of both systems can thus be carried out based on the replacement of the part systems without introducing a loss of precision in the comparison.

REFERENCES:
patent: 0 828 215 (1998-03-01), None
patent: WO 99/50766 (1999-10-01), None
patent: WO 00/26825 (2000-05-01), None
Huang et al., “Aquila: An Equivalence Checking System for Large Sequential Designs,” IEEE, May 2000, pp. 443-464.
Liu et al., “An Efficient Functional Coverage Test for HDL Description at RTL,” IEEE, Oct. 1999, pp. 1-3.
Cerny et al., “Verification of Real Time Controllers Against Timing Diagram Sepcification Using Constraint Logic Programming,” IEEE, Oct. 1999, PP.
Kumar et al., “Logic and Functional Verification in a Commercial Semiconductor Environment,” IEEE, Mar. 1998, pp. 1-8.
Carl Pixley, et al.: Multi-level Synthesis for Safe Replaceability, IEEE/ACM Digest of Technical Papeers, IEEE/ACM International Conference on CAD-94, IC-CAD94, pp. 442-449, 1994.
International Preliminary Examination Report dated Feb. 27, 2003 (10 pp) for International Application No. PCT/DE01/03219 (in German).
International Preliminary Examination Report dated Feb. 27, 2003 ( 8 pp) for International Application No. PCT/DE01/03219 (English Translation).

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