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:
Feb. 18, 2014
Filed:
Jun. 14, 2010
Jon Mclachlan, San Francisco, CA (US);
Julien Lerouge, Santa Clara, CA (US);
Nicholas T. Sullivan, Sunnyvale, CA (US);
Ganna Zaks, Mountain View, CA (US);
Augustin J. Farrugia, Cupertino, CA (US);
Jon McLachlan, San Francisco, CA (US);
Julien Lerouge, Santa Clara, CA (US);
Nicholas T. Sullivan, Sunnyvale, CA (US);
Ganna Zaks, Mountain View, CA (US);
Augustin J. Farrugia, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Disclosed are systems, methods, and non-transitory computer-readable storage media for detecting changes in a source of entropy. A system configured to practice the method generates a cyclic graph based at least in part on the values in the entropy pool. Using the cyclic graph and one or more starting points, the system establishes one or more baseline properties for the cyclic graph. These properties can include the number of steps required to identify a cycle in the graph or the number of steps required to traverse the graph from one or more starting points to a selected end point. The computed properties are then stored for later use. As execution progresses, the system monitors the entropy pool to detect a change by regenerating the cyclic graph and using the stored properties.