Method to compensate by a server a clock deviation of a card
US10996708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | May 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/4018
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
This invention relates to a method to compensate by a server a clock deviation of a card i by maintaining a time base Tbase (i) synchronized with card i, the method comprising the steps of: receiving at a time TS a dynamic card verification dCVV code value generated by card i; providing a set of at least two dCVV code corresponding to two successive dCVV time periods; if the dCVV code received from card i corresponds to one of the dCVV codes of the provided set but is different from the reference dCVV code, determine the minimum possible timing drift Min_td between the time base maintained by the server for the card and the time base Tbase(i) of the card; updating time base Tbase(i) by addition of a time drift correction equal to the minimum possible time drift Min_td.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.