Method and apparatus for transforming sensor signals into graphical images
US6212296A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/373
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus to precisely track the position of the writing instrument, specifically the writing end, such as the tip, of a pen. One embodiment of the invention described herein includes a writing instrument containing acceleration sensors and angular velocity sensors. Data from these sensors are processed via an Euler transform to determine the strokes made with the writing instrument. Corrections may be made to improve upon the output of the Euler transform. The data describing the strokes may include graphical representations of the strokes actually made with the writing instrument. Data describing the strokes may be stored or processed to accomplish a variety of tasks such as recording information, faxing a message, recording an appointment, or other such tasks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.