Device, method, and graphical user interface for touch-based gestural input on an electronic canvas
US8619100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Oct 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04808
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods for touch-based gestural command input on a device with a touch-sensitive surface and a display are disclosed. In one embodiment, a method includes displaying an electronic canvas including an object at a first magnification level; simultaneously detecting a first and a second contact on the touch-sensitive surface, wherein at least one of the first contact and the second contact on the touch-sensitive surface is at a location that corresponds to a location on the display that is away from the object; detecting a gesture made with the first and second contacts; when a velocity of the gesture is less than a predefined gesture velocity threshold, scaling the electronic canvas in accordance with the gesture; and, when the velocity of the gesture is greater than the predefined gesture velocity threshold transitioning the electronic canvas from the first magnification level to a second, predefined magnification level in response to the gesture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.