System and method for determining the age of objects in the presence of unreliable clocks
US8423517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2011 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Oct 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for determining an age of an object is provided. A first index for a timestamp entry in a sequence of timestamps corresponding to a time at which an object was created is identified. At least one subsequence of timestamps from the sequence of timestamps having indexes for entries in the sequence of timestamps that are between the first index in the sequence of timestamps and a last index for a last timestamp entry in the sequence of timestamps is identified, wherein the at least one subsequence of timestamps conforms to a function of a time interval between storage of consecutive current timestamps reported by clock of the computer system. Timestamps from the sequence of timestamps that are not included in the at least one subsequence of timestamps are removed. An age of the object is determined based on the at least one subsequence of timestamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.