Supply authentication via timing challenge response
US11020976B2 · kind B2 · utility
1Cited by
8References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 27, 2017 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Apr 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/61
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.