Using RF identification tags in writing instruments as a means for line style differentiation
US7126590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2001 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Sep 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One aspect of the invention involves the output of a radio frequency (RF) identification tag by a writing instrument to indicate ink color or another characteristic associated with a line style parameter of the writing instrument. The RF identification tag is a wireless signal that uniquely identifies the line style parameters, such as physical-ink or virtual-ink color, produced when using the writing instrument. A writing tablet receives the RF identification tag and signals a computing device, responsible for displaying graphical representations made on the writing tablet, to display a portion of the graphical representation formed by that writing instrument with the characteristics of the line style parameters specified by the RF identification tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.