The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2003
Filed:
Jan. 14, 2000
Tadaaki Tanimoto, Higashimurayama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The timing for a mixed circuit of a synchronous circuit and an asynchronous circuit classifies the synchronous circuit into a cyclic circuit and an acyclic circuit, and the asynchronous circuit into a cyclic circuit and an acyclic circuit. The cyclic circuit of the synchronous circuit and the cyclic circuit of the asynchronous circuit thus classified are subjected to a static timing analysis, whereas the acyclic circuit of the synchronous circuit and the acyclic circuit of the asynchronous circuit thus classified are subjected to a dynamic timing analysis. As a result, the timing analysis can be made considering a hazard of the synchronous circuit, and the circuit to be operated in response to a signal, as can be virtually deemed as a clock, is subjected to the static timing analysis so that the analyzing operation can be made efficient.