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:
Jul. 25, 2006
Filed:
Dec. 18, 2002
Pinhong Chen, Fremont, CA (US);
Chin-chi Teng, Sunnyvale, CA (US);
Pinhong Chen, Fremont, CA (US);
Chin-Chi Teng, Sunnyvale, CA (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
To estimate path delays within an IC, a serial database is first created to hold and read out RC extraction data for nets within the IC in an order in which the RC extraction data will be needed when estimating path delays. Thereafter, as the RC extraction data is sequentially read out of the database for each net, the path delay though each section of the net is computed and added to the estimated path delay for each signal path including that net section. The RC extraction data for each net is accessed and accessed only once, thereby minimizing the processing time needed to perform timing analysis by minimizing hard disk read accesses when the RC extraction database resides on a hard disk.