Blended transfer function for computer pointing devices
US8049733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2007 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04812
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transfer function is provided for use with computer pointing devices such as trackpads. The transfer function includes a first component having characteristics of a positional transfer function and a second component having characteristics of a velocity-based transfer function. The first (positional) component and the second (velocity-based) component of the transfer function are blended so that the transfer function exhibits purely positional behavior in response to a first range of inputs and exhibits combined positional and velocity-based behavior in response to a second range of inputs. The first range of inputs may, for example, correspond to a region in the input coordinate space that is bounded by a circle having a predetermined threshold radius.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.