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:
Apr. 03, 2001
Filed:
Nov. 04, 1996
Karl W. Gohl, Los Altos, CA (US);
Ross A. Donelly, Sunnyvale, CA (US);
Helmut Hissen, Palo Alto, CA (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A method and apparatus that displays a “delay chart” on a display screen, using a variety of user-selected formats and representing delays of a circuit being debugged. These formats include right-to-left and left-to-right displays. The displays can optionally have duplicative paths merged and zero delay paths removed. The invention also allows the designer to select various parts of the delay chart and then automatically highlights related portions of HDL code for the circuit (which also is displayed on the display screen). Conversely, the designer can select portions of the HDL code and the invention will automatically highlight related portions of the delay chart. Thus, the designer can easily determine which parts of the HDL caused large delays in the circuit being designed and can easily change those parts of the HDL in an attempt to obtain more desirable timing.