DTMF lockout utility epoch time stamp
US7366287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2003 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A current time and a current Gregorian date are converted into an epoch time stamp. A number of seconds that have elapsed since a predetermined date up until the current year is determined. A number of seconds that have elapsed since the beginning of the current year up until the current month is determined based on whether the current year is a leap year. In addition, a number of seconds that have elapsed since the beginning of the current month up until the current day is calculated, as is a number of seconds that have elapsed during the current day. All of these values are summed to obtain a converted time. Finally, it is determined whether Daylight Savings Time is in effect, and when Daylight Savings Time is not in effect, 3600 seconds are added to the converted time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.