Cell phones with optical capabilities, and related applications
US6947571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00307
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cell phone is equipped with a 2D optical sensor, enabling a variety of applications. For example, such a phone may also be provided with a digital watermark decoder, permitting decoding of steganographic data on imaged objects. Movement of a phone may be inferred by sensing movement of an imaged pattern across the optical sensor's field of view, allowing use of the phone as a gestural input device through which a user can signal instructions to a computer-based process. A variety of other arrangements by which electronic devices can interact with the physical world are also detailed, e.g., involving sensing and responding to digital watermarks, bar codes, RFIDs, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.