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:
Jun. 22, 2010
Filed:
Feb. 27, 2007
Applicant:
Theodore Y. Tso, Medford, MA (US);
Inventor:
Theodore Y. Tso, Medford, MA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method, system and program are provided for determining if a system clock has been reset backwards in time by using a randomly generated set of bytes (such as a randomly generated or type 4 UUID) as a time epoch. By generating a time epoch at boot time and whenever the system clock is set back in time, an application can compare the time epoch value at an earlier point in its execution, with the current time epoch. If the time epoch values are different, the application will know that the system clock has been set back in time.