Indigenous authentication for sensor-recorders and other information capture devices
US6757828B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jul 27, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jul 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3277
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system of authentication for sensor-recorders and other information capture devices is disclosed. In accordance with aspects of the current invention, a digital sample of the environment is obtained. From this sample and at least one parameter representative of at least one condition under which the sample was generated, a digital signature is created. This signature is stored in memory with the sample to be checked at a later time for authenticity. The file is checked for authenticity by generating a second signature from the file and comparing that signature to the original signature. If the two signatures are identical, the sample is considered authentic and if the two signatures are different, the sample cannot be authenticated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.