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:
Jan. 25, 2005
Filed:
Dec. 11, 2001
Alok Jain, New Delhi, IN;
Manpreet Reehal, SAS Nagar Mohali, IN;
Alok Jain, New Delhi, IN;
Manpreet Reehal, SAS Nagar Mohali, IN;
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
An abstraction mechanism is disclosed, which is capable of recognizing and abstracting precharged latches and flip-flops, and which is capable of generating a cycle ready representation of the precharged latches and flip-flops. In one embodiment, the abstraction mechanism abstracts precharged latches and flip-flops by using cofactors. In doing so, the abstraction mechanism accesses a logic level representation of a structure. Based upon the logic level representation, the abstraction mechanism derives one or more cofactors. These cofactors are then tested to determine whether they indicate precharge behavior, and whether they indicate latch or flip-flop behavior. If the cofactors indicate both precharge behavior and latch or flip-flop behavior, then the abstraction mechanism abstracts the structure as a precharged latch, or a precharged flip-flop, whichever is appropriate. By recognizing and abstracting precharged latches and flip-flops in this manner, the abstraction mechanism simplifies the functional representation of the structure, and makes it possible to generate a cycle ready representation of the structure.