Method for implementing a partial ink layer for a pen-based computing device
US7170502B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jun 27, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0488
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for creating an ink-trail and implementing a partial ink layer in a pen based computing apparatus is described. The partial ink layer, which is smaller than a display window of a computing apparatus, is located at a starting address with a shape and size that fits within the display widow. An ink trail is created within the ink layer that simulates ink flowing from the pen to paper while a character, or several cursive characters, is formed by the pen while touching a touch screen overlaying the display screen of the computing apparatus. The ink trail is erased when the pen is removed from the touch screen. The bit depth of the pixels in the partial ink layer are less than for the pixels of the main display and can be as few as 2, which includes a transparency bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.