Interactive optical cards and other hand-held devices with increased connectivity
US7552456B2 · kind B2 · utility
3Cited by
43References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Apr 10, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8133
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for deriving benefits from the reception and processing of composite video signals by a hand-held device, such as a smart card. Video signals are modulated with auxiliary data creating composite video signals. The composite video signals are then transmitted to and received by a hand-held device. The auxiliary data is then detected in the modulated video signal by circuitry of the hand-held device. The user receives benefits resulting from the reception of the auxiliary data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.