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.

Date of Patent:
Jul. 06, 2021

Filed:

Jun. 11, 2020
Applicant:

Xilinx, Inc., San Jose, CA (US);

Inventors:

Aparna Suresh, Moolapalayam Erode, IN;

Tapodyuti Mandal, Hyderabad, IN;

Vinayak Thonda, Mehdipatnam Hyderabad, IN;

Assignee:

Xilinx, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 30/00 (2020.01); G06F 30/3308 (2020.01); G01R 31/3183 (2006.01); G06F 117/08 (2020.01);
U.S. Cl.
CPC ...
G06F 30/3308 (2020.01); G01R 31/31835 (2013.01); G06F 2117/08 (2020.01);
Abstract

Verification for a design can include, for a covergroup corresponding to a variable of the design, generating a state coverage data structure specifying a plurality of transition bins. Each transition bin can include a sequence. Each sequence can specify states of the variable to be traversed in order during simulation of the design. Verification can include generating a state sequence table configured to use state values as keys and one or more of the sequences as data for the respective keys, and during simulation of the design, maintaining a sequence list specifying each sequence that is running based on sample values of the variable. Hit counts for the transition bins can be updated during the simulation.


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