Tracking movement of a writing instrument on a general surface
US9354725B2 · kind B2 · utility
4Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2013 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0386
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for capturing, using a camera, an image of a general writing surface. The captured image is compared with one or more previously saved images. A related image is determined based upon syntax and semantics of handwriting recognized in the captured image and the one or more previously saved images. A previous document associated with the related image is retrieved and set as the active document. A position of a writing instrument is mapped to a position within the previous document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.